pixman mesa git update 3 Aug 2012

29 files changed, 594 insertions, 440 deletions

diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c
index 6846bbc60..af89d8180 100644
--- a/mesalib/src/mesa/drivers/common/meta.c
+++ b/mesalib/src/mesa/drivers/common/meta.c
@@ -287,7 +287,7 @@ struct gen_mipmap_state
 struct decompress_state
 {
    GLuint ArrayObj;
-   GLuint VBO, FBO, RBO;
+   GLuint VBO, FBO, RBO, Sampler;
    GLint Width, Height;
 };
 
@@ -1350,15 +1350,13 @@ blitframebuffer_texture(struct gl_context *ctx,
       if (readAtt && readAtt->Texture) {
          const struct gl_texture_object *texObj = readAtt->Texture;
          const GLuint srcLevel = readAtt->TextureLevel;
-         const GLenum minFilterSave = texObj->Sampler.MinFilter;
-         const GLenum magFilterSave = texObj->Sampler.MagFilter;
          const GLint baseLevelSave = texObj->BaseLevel;
          const GLint maxLevelSave = texObj->MaxLevel;
-         const GLenum wrapSSave = texObj->Sampler.WrapS;
-         const GLenum wrapTSave = texObj->Sampler.WrapT;
-         const GLenum srgbSave = texObj->Sampler.sRGBDecode;
          const GLenum fbo_srgb_save = ctx->Color.sRGBEnabled;
          const GLenum target = texObj->Target;
+         GLuint sampler, samplerSave =
+            ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
+            ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
 
          if (drawAtt->Texture == readAtt->Texture) {
             /* Can't use same texture as both the source and dest.  We need
@@ -1373,6 +1371,9 @@ blitframebuffer_texture(struct gl_context *ctx,
             return mask;
          }
 
+         _mesa_GenSamplers(1, &sampler);
+         _mesa_BindSampler(ctx->Texture.CurrentUnit, sampler);
+
          /*
          printf("Blit from texture!\n");
          printf("  srcAtt %p  dstAtt %p\n", readAtt, drawAtt);
@@ -1381,18 +1382,18 @@ blitframebuffer_texture(struct gl_context *ctx,
 
          /* Prepare src texture state */
          _mesa_BindTexture(target, texObj->Name);
-         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
-         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
+         _mesa_SamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, filter);
+         _mesa_SamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, filter);
          if (target != GL_TEXTURE_RECTANGLE_ARB) {
             _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
          }
-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+         _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+         _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
 	 /* Always do our blits with no sRGB decode or encode.*/
 	 if (ctx->Extensions.EXT_texture_sRGB_decode) {
-	    _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT,
+	    _mesa_SamplerParameteri(sampler, GL_TEXTURE_SRGB_DECODE_EXT,
 				GL_SKIP_DECODE_EXT);
 	 }
          if (ctx->Extensions.EXT_framebuffer_sRGB) {
@@ -1452,21 +1453,17 @@ blitframebuffer_texture(struct gl_context *ctx,
          /* Restore texture object state, the texture binding will
           * be restored by _mesa_meta_end().
           */
-         _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);
-         _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);
          if (target != GL_TEXTURE_RECTANGLE_ARB) {
             _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
          }
-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);
-         _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);
-	 if (ctx->Extensions.EXT_texture_sRGB_decode) {
-	    _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT, srgbSave);
-	 }
 	 if (ctx->Extensions.EXT_framebuffer_sRGB && fbo_srgb_save) {
 	    _mesa_set_enable(ctx, GL_FRAMEBUFFER_SRGB_EXT, GL_TRUE);
 	 }
 
+         _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
+         _mesa_DeleteSamplers(1, &sampler);
+
          /* Done with color buffer */
          mask &= ~GL_COLOR_BUFFER_BIT;
       }
@@ -3295,6 +3292,7 @@ decompress_texture_image(struct gl_context *ctx,
    struct vertex verts[4];
    GLuint fboDrawSave, fboReadSave;
    GLuint rbSave;
+   GLuint samplerSave;
 
    if (slice > 0) {
       assert(target == GL_TEXTURE_3D ||
@@ -3315,6 +3313,9 @@ decompress_texture_image(struct gl_context *ctx,
 
    _mesa_meta_begin(ctx, MESA_META_ALL & ~MESA_META_PIXEL_STORE);
 
+   samplerSave = ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
+         ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
+
    /* Create/bind FBO/renderbuffer */
    if (decompress->FBO == 0) {
       _mesa_GenFramebuffersEXT(1, &decompress->FBO);
@@ -3362,6 +3363,22 @@ decompress_texture_image(struct gl_context *ctx,
       _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, decompress->VBO);
    }
 
+   if (!decompress->Sampler) {
+      _mesa_GenSamplers(1, &decompress->Sampler);
+      _mesa_BindSampler(ctx->Texture.CurrentUnit, decompress->Sampler);
+      /* nearest filtering */
+      _mesa_SamplerParameteri(decompress->Sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+      _mesa_SamplerParameteri(decompress->Sampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+      /* No sRGB decode or encode.*/
+      if (ctx->Extensions.EXT_texture_sRGB_decode) {
+         _mesa_SamplerParameteri(decompress->Sampler, GL_TEXTURE_SRGB_DECODE_EXT,
+                             GL_SKIP_DECODE_EXT);
+      }
+
+   } else {
+      _mesa_BindSampler(ctx->Texture.CurrentUnit, decompress->Sampler);
+   }
+
    setup_texture_coords(faceTarget, slice, width, height,
                         verts[0].tex,
                         verts[1].tex,
@@ -3387,26 +3404,14 @@ decompress_texture_image(struct gl_context *ctx,
 
    {
       /* save texture object state */
-      const GLenum minFilterSave = texObj->Sampler.MinFilter;
-      const GLenum magFilterSave = texObj->Sampler.MagFilter;
       const GLint baseLevelSave = texObj->BaseLevel;
       const GLint maxLevelSave = texObj->MaxLevel;
-      const GLenum wrapSSave = texObj->Sampler.WrapS;
-      const GLenum wrapTSave = texObj->Sampler.WrapT;
-      const GLenum srgbSave = texObj->Sampler.sRGBDecode;
 
       /* restrict sampling to the texture level of interest */
       _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, texImage->Level);
       _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, texImage->Level);
-      /* nearest filtering */
-      _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-      _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 
       /* No sRGB decode or encode.*/
-      if (ctx->Extensions.EXT_texture_sRGB_decode) {
-         _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT,
-                             GL_SKIP_DECODE_EXT);
-      }
       if (ctx->Extensions.EXT_framebuffer_sRGB) {
          _mesa_set_enable(ctx, GL_FRAMEBUFFER_SRGB_EXT, GL_FALSE);
       }
@@ -3417,17 +3422,11 @@ decompress_texture_image(struct gl_context *ctx,
       /* Restore texture object state, the texture binding will
        * be restored by _mesa_meta_end().
        */
-      _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilterSave);
-      _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilterSave);
       if (target != GL_TEXTURE_RECTANGLE_ARB) {
          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
          _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
       }
-      _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, wrapSSave);
-      _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, wrapTSave);
-      if (ctx->Extensions.EXT_texture_sRGB_decode) {
-         _mesa_TexParameteri(target, GL_TEXTURE_SRGB_DECODE_EXT, srgbSave);
-      }
+
    }
 
    /* read pixels from renderbuffer */
@@ -3455,6 +3454,8 @@ decompress_texture_image(struct gl_context *ctx,
    /* disable texture unit */
    _mesa_set_enable(ctx, target, GL_FALSE);
 
+   _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
+
    _mesa_meta_end(ctx);
 
    /* restore fbo bindings */
diff --git a/mesalib/src/mesa/main/attrib.c b/mesalib/src/mesa/main/attrib.c
index 318d576e8..8bc7c348f 100644
--- a/mesalib/src/mesa/main/attrib.c
+++ b/mesalib/src/mesa/main/attrib.c
@@ -806,7 +806,7 @@ pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)
                                 samp->CompareFunc);
          }
          if (ctx->Extensions.ARB_depth_texture)
-            _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, samp->DepthMode);
+            _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, obj->DepthMode);
       }
 
       /* remove saved references to the texture objects */
diff --git a/mesalib/src/mesa/main/bufferobj.c b/mesalib/src/mesa/main/bufferobj.c
index 7d72092a2..48edd89c9 100644
--- a/mesalib/src/mesa/main/bufferobj.c
+++ b/mesalib/src/mesa/main/bufferobj.c
@@ -131,7 +131,7 @@ get_buffer(struct gl_context *ctx, const char *func, GLenum target)
 }
 
 
-static inline GLenum
+static inline GLbitfield
 default_access_mode(const struct gl_context *ctx)
 {
    /* Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
@@ -150,7 +150,7 @@ default_access_mode(const struct gl_context *ctx)
     * The difference is because GL_OES_mapbuffer only supports mapping buffers
     * write-only.
     */
-   return (ctx->API == API_OPENGLES)
+   return _mesa_is_gles(ctx)
       ? GL_MAP_WRITE_BIT : (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
 }
 
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index a7b481ca7..5e13a9357 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -113,7 +113,7 @@ static const struct extension extension_table[] = {
    { "GL_ARB_point_sprite",                        o(ARB_point_sprite),                        GL,             2003 },
    { "GL_ARB_provoking_vertex",                    o(EXT_provoking_vertex),                    GL,             2009 },
    { "GL_ARB_robustness",                          o(dummy_true),                              GL,             2010 },
-   { "GL_ARB_sampler_objects",                     o(ARB_sampler_objects),                     GL,             2009 },
+   { "GL_ARB_sampler_objects",                     o(dummy_true),                              GL,             2009 },
    { "GL_ARB_seamless_cube_map",                   o(ARB_seamless_cube_map),                   GL,             2009 },
    { "GL_ARB_shader_bit_encoding",                 o(ARB_shader_bit_encoding),                 GL,             2010 },
    { "GL_ARB_shader_objects",                      o(ARB_shader_objects),                      GL,             2002 },
diff --git a/mesalib/src/mesa/main/ff_fragment_shader.cpp b/mesalib/src/mesa/main/ff_fragment_shader.cpp
index 0233f3802..f743ce109 100644
--- a/mesalib/src/mesa/main/ff_fragment_shader.cpp
+++ b/mesalib/src/mesa/main/ff_fragment_shader.cpp
@@ -33,6 +33,7 @@ extern "C" {
 #include "mtypes.h"
 #include "main/uniforms.h"
 #include "main/macros.h"
+#include "main/samplerobj.h"
 #include "program/program.h"
 #include "program/prog_parameter.h"
 #include "program/prog_cache.h"
@@ -428,11 +429,13 @@ static GLuint make_state_key( struct gl_context *ctx,  struct state_key *key )
       const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
       const struct gl_texture_object *texObj = texUnit->_Current;
       const struct gl_tex_env_combine_state *comb = texUnit->_CurrentCombine;
+      const struct gl_sampler_object *samp;
       GLenum format;
 
       if (!texUnit->_ReallyEnabled || !texUnit->Enabled)
          continue;
 
+      samp = _mesa_get_samplerobj(ctx, i);
       format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
 
       key->unit[i].enabled = 1;
@@ -444,7 +447,7 @@ static GLuint make_state_key( struct gl_context *ctx,  struct state_key *key )
          translate_tex_src_bit(texUnit->_ReallyEnabled);
 
       key->unit[i].shadow =
-         ((texObj->Sampler.CompareMode == GL_COMPARE_R_TO_TEXTURE) &&
+         ((samp->CompareMode == GL_COMPARE_R_TO_TEXTURE) &&
           ((format == GL_DEPTH_COMPONENT) || 
            (format == GL_DEPTH_STENCIL_EXT)));
 
diff --git a/mesalib/src/mesa/main/get.c b/mesalib/src/mesa/main/get.c
index b9c98fb22..16ad2c430 100644
--- a/mesalib/src/mesa/main/get.c
+++ b/mesalib/src/mesa/main/get.c
@@ -284,11 +284,6 @@ static const int extra_GLSL_130[] = {
    EXTRA_END
 };
 
-static const int extra_ARB_sampler_objects[] = {
-   EXT(ARB_sampler_objects),
-   EXTRA_END
-};
-
 static const int extra_ARB_uniform_buffer_object_and_geometry_shader[] = {
    EXT(ARB_uniform_buffer_object),
    EXT(ARB_geometry_shader4),
@@ -1304,7 +1299,7 @@ static const struct value_desc values[] = {
 
    /* GL_ARB_sampler_objects / GL 3.3 */
    { GL_SAMPLER_BINDING,
-     LOC_CUSTOM, TYPE_INT, GL_SAMPLER_BINDING, extra_ARB_sampler_objects },
+     LOC_CUSTOM, TYPE_INT, GL_SAMPLER_BINDING, NO_EXTRA },
 
    /* GL 3.0 */
    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index 7d7213f4d..e8adac99d 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1253,9 +1253,6 @@ struct gl_sampler_object
    GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */
    GLenum sRGBDecode;           /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
    GLboolean CubeMapSeamless;   /**< GL_AMD_seamless_cubemap_per_texture */
-
-   /* deprecated sampler state */
-   GLenum DepthMode;		/**< GL_ARB_depth_texture */
 };
 
 
@@ -1272,6 +1269,8 @@ struct gl_texture_object
 
    struct gl_sampler_object Sampler;
 
+   GLenum DepthMode;		/**< GL_ARB_depth_texture */
+
    GLfloat Priority;		/**< in [0,1] */
    GLint BaseLevel;		/**< min mipmap level, OpenGL 1.2 */
    GLint MaxLevel;		/**< max mipmap level, OpenGL 1.2 */
@@ -2966,7 +2965,6 @@ struct gl_extensions
    GLboolean ARB_occlusion_query;
    GLboolean ARB_occlusion_query2;
    GLboolean ARB_point_sprite;
-   GLboolean ARB_sampler_objects;
    GLboolean ARB_seamless_cube_map;
    GLboolean ARB_shader_bit_encoding;
    GLboolean ARB_shader_objects;
diff --git a/mesalib/src/mesa/main/samplerobj.c b/mesalib/src/mesa/main/samplerobj.c
index 5d1b2adbb..dc8adfc3f 100644
--- a/mesalib/src/mesa/main/samplerobj.c
+++ b/mesalib/src/mesa/main/samplerobj.c
@@ -133,10 +133,8 @@ _mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name)
    sampObj->CompareFailValue = 0.0;
    sampObj->sRGBDecode = GL_DECODE_EXT;
    sampObj->CubeMapSeamless = GL_FALSE;
-   sampObj->DepthMode = 0;
 }
 
-
 /**
  * Fallback for ctx->Driver.NewSamplerObject();
  */
@@ -162,7 +160,7 @@ _mesa_delete_sampler_object(struct gl_context *ctx,
 }
 
 
-static void GLAPIENTRY
+void GLAPIENTRY
 _mesa_GenSamplers(GLsizei count, GLuint *samplers)
 {
    GET_CURRENT_CONTEXT(ctx);
@@ -194,7 +192,7 @@ _mesa_GenSamplers(GLsizei count, GLuint *samplers)
 }
 
 
-static void GLAPIENTRY
+void GLAPIENTRY
 _mesa_DeleteSamplers(GLsizei count, const GLuint *samplers)
 {
    GET_CURRENT_CONTEXT(ctx);
@@ -244,7 +242,7 @@ _mesa_IsSampler(GLuint sampler)
 }
 
 
-static void GLAPIENTRY
+void GLAPIENTRY
 _mesa_BindSampler(GLuint unit, GLuint sampler)
 {
    struct gl_sampler_object *sampObj;
@@ -584,8 +582,25 @@ set_sampler_cube_map_seamless(struct gl_context *ctx,
    return GL_TRUE;
 }
 
+static GLuint
+set_sampler_srgb_decode(struct gl_context *ctx,
+                              struct gl_sampler_object *samp, GLenum param)
+{
+   if (!ctx->Extensions.EXT_texture_sRGB_decode)
+      return INVALID_PNAME;
 
-static void GLAPIENTRY
+   if (samp->sRGBDecode == param)
+      return GL_FALSE;
+
+   if (param != GL_DECODE_EXT && param != GL_SKIP_DECODE_EXT)
+      return INVALID_VALUE;
+
+   flush(ctx);
+   samp->sRGBDecode = param;
+   return GL_TRUE;
+}
+
+void GLAPIENTRY
 _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
 {
    struct gl_sampler_object *sampObj;
@@ -636,6 +651,9 @@ _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, param);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, param);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       /* fall-through */
    default:
@@ -720,6 +738,9 @@ _mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, (GLboolean) param);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, (GLenum) param);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       /* fall-through */
    default:
@@ -801,6 +822,9 @@ _mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, params[0]);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, params[0]);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       {
          GLfloat c[4];
@@ -892,6 +916,9 @@ _mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, (GLboolean) params[0]);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, (GLenum) params[0]);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       res = set_sampler_border_colorf(ctx, sampObj, params);
       break;
@@ -974,6 +1001,9 @@ _mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, params[0]);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, (GLenum) params[0]);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       res = set_sampler_border_colori(ctx, sampObj, params);
       break;
@@ -1057,6 +1087,9 @@ _mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params)
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
       res = set_sampler_cube_map_seamless(ctx, sampObj, params[0]);
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      res = set_sampler_srgb_decode(ctx, sampObj, (GLenum) params[0]);
+      break;
    case GL_TEXTURE_BORDER_COLOR:
       res = set_sampler_border_colorui(ctx, sampObj, params);
       break;
@@ -1151,6 +1184,11 @@ _mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params)
          goto invalid_pname;
       *params = sampObj->CubeMapSeamless;
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      if (!ctx->Extensions.EXT_texture_sRGB_decode)
+         goto invalid_pname;
+      *params = (GLenum) sampObj->sRGBDecode;
+      break;
    default:
       goto invalid_pname;
    }
@@ -1224,6 +1262,11 @@ _mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params)
          goto invalid_pname;
       *params = (GLfloat) sampObj->CubeMapSeamless;
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      if (!ctx->Extensions.EXT_texture_sRGB_decode)
+         goto invalid_pname;
+      *params = (GLfloat) sampObj->sRGBDecode;
+      break;
    default:
       goto invalid_pname;
    }
@@ -1298,6 +1341,11 @@ _mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params)
          goto invalid_pname;
       *params = sampObj->CubeMapSeamless;
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      if (!ctx->Extensions.EXT_texture_sRGB_decode)
+         goto invalid_pname;
+      *params = (GLenum) sampObj->sRGBDecode;
+      break;
    default:
       goto invalid_pname;
    }
@@ -1372,6 +1420,11 @@ _mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params)
          goto invalid_pname;
       *params = sampObj->CubeMapSeamless;
       break;
+   case GL_TEXTURE_SRGB_DECODE_EXT:
+      if (!ctx->Extensions.EXT_texture_sRGB_decode)
+         goto invalid_pname;
+      *params = (GLenum) sampObj->sRGBDecode;
+      break;
    default:
       goto invalid_pname;
    }
diff --git a/mesalib/src/mesa/main/samplerobj.h b/mesalib/src/mesa/main/samplerobj.h
index 0bfda4351..2b0cd7946 100644
--- a/mesalib/src/mesa/main/samplerobj.h
+++ b/mesalib/src/mesa/main/samplerobj.h
@@ -77,5 +77,16 @@ _mesa_init_sampler_object_functions(struct dd_function_table *driver);
 extern void
 _mesa_init_sampler_object_dispatch(struct _glapi_table *disp);
 
+extern void GLAPIENTRY
+_mesa_BindSampler(GLuint unit, GLuint sampler);
+
+extern void GLAPIENTRY
+_mesa_GenSamplers(GLsizei count, GLuint *samplers);
+
+extern void GLAPIENTRY
+_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
+
+extern void GLAPIENTRY
+_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
 
 #endif /* SAMPLEROBJ_H */
diff --git a/mesalib/src/mesa/main/texobj.c b/mesalib/src/mesa/main/texobj.c
index e0494c940..529a6d449 100644
--- a/mesalib/src/mesa/main/texobj.c
+++ b/mesalib/src/mesa/main/texobj.c
@@ -145,7 +145,7 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj,
    obj->Sampler.CompareMode = GL_NONE;         /* ARB_shadow */
    obj->Sampler.CompareFunc = GL_LEQUAL;       /* ARB_shadow */
    obj->Sampler.CompareFailValue = 0.0F;       /* ARB_shadow_ambient */
-   obj->Sampler.DepthMode = GL_LUMINANCE;      /* ARB_depth_texture */
+   obj->DepthMode = GL_LUMINANCE;
    obj->Sampler.CubeMapSeamless = GL_FALSE;
    obj->Swizzle[0] = GL_RED;
    obj->Swizzle[1] = GL_GREEN;
@@ -259,7 +259,7 @@ _mesa_copy_texture_object( struct gl_texture_object *dest,
    dest->Sampler.CompareFunc = src->Sampler.CompareFunc;
    dest->Sampler.CompareFailValue = src->Sampler.CompareFailValue;
    dest->Sampler.CubeMapSeamless = src->Sampler.CubeMapSeamless;
-   dest->Sampler.DepthMode = src->Sampler.DepthMode;
+   dest->DepthMode = src->DepthMode;
    dest->Sampler.sRGBDecode = src->Sampler.sRGBDecode;
    dest->_MaxLevel = src->_MaxLevel;
    dest->_MaxLambda = src->_MaxLambda;
diff --git a/mesalib/src/mesa/main/texparam.c b/mesalib/src/mesa/main/texparam.c
index 1376219d7..9213499a4 100644
--- a/mesalib/src/mesa/main/texparam.c
+++ b/mesalib/src/mesa/main/texparam.c
@@ -383,14 +383,14 @@ set_tex_parameteri(struct gl_context *ctx,
 
    case GL_DEPTH_TEXTURE_MODE_ARB:
       if (ctx->Extensions.ARB_depth_texture) {
-         if (texObj->Sampler.DepthMode == params[0])
+         if (texObj->DepthMode == params[0])
             return GL_FALSE;
          if (params[0] == GL_LUMINANCE ||
              params[0] == GL_INTENSITY ||
              params[0] == GL_ALPHA ||
              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
             flush(ctx);
-            texObj->Sampler.DepthMode = params[0];
+            texObj->DepthMode = params[0];
             return GL_TRUE;
          }
          goto invalid_param;
@@ -1157,7 +1157,7 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
       case GL_DEPTH_TEXTURE_MODE_ARB:
          if (!ctx->Extensions.ARB_depth_texture)
             goto invalid_pname;
-         *params = (GLfloat) obj->Sampler.DepthMode;
+         *params = (GLfloat) obj->DepthMode;
          break;
       case GL_TEXTURE_LOD_BIAS:
          *params = obj->Sampler.LodBias;
@@ -1303,7 +1303,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
       case GL_DEPTH_TEXTURE_MODE_ARB:
          if (!ctx->Extensions.ARB_depth_texture)
             goto invalid_pname;
-         *params = (GLint) obj->Sampler.DepthMode;
+         *params = (GLint) obj->DepthMode;
          break;
       case GL_TEXTURE_LOD_BIAS:
          *params = (GLint) obj->Sampler.LodBias;
diff --git a/mesalib/src/mesa/main/texstate.c b/mesalib/src/mesa/main/texstate.c
index 8ca9092ce..fa1fef27e 100644
--- a/mesalib/src/mesa/main/texstate.c
+++ b/mesalib/src/mesa/main/texstate.c
@@ -407,7 +407,7 @@ update_tex_combine(struct gl_context *ctx, struct gl_texture_unit *texUnit)
       GLenum format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
 
       if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) {
-         format = texObj->Sampler.DepthMode;
+         format = texObj->DepthMode;
       }
       calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);
       texUnit->_CurrentCombine = & texUnit->_EnvMode;
diff --git a/mesalib/src/mesa/main/version.c b/mesalib/src/mesa/main/version.c
index 91ef2dff4..85e623142 100644
--- a/mesalib/src/mesa/main/version.c
+++ b/mesalib/src/mesa/main/version.c
@@ -170,12 +170,12 @@ compute_version(struct gl_context *ctx)
                               ctx->Extensions.ARB_explicit_attrib_location &&
                               ctx->Extensions.ARB_instanced_arrays &&
                               ctx->Extensions.ARB_occlusion_query2 &&
-                              ctx->Extensions.ARB_sampler_objects &&
                               ctx->Extensions.ARB_shader_bit_encoding &&
                               ctx->Extensions.ARB_texture_rgb10_a2ui &&
                               ctx->Extensions.ARB_timer_query &&
                               ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
                               ctx->Extensions.EXT_texture_swizzle);
+                              /* ARB_sampler_objects is always enabled in mesa */
 
    if (ver_3_3) {
       major = 3;
diff --git a/mesalib/src/mesa/program/prog_statevars.c b/mesalib/src/mesa/program/prog_statevars.c
index 3d1338674..91212218e 100644
--- a/mesalib/src/mesa/program/prog_statevars.c
+++ b/mesalib/src/mesa/program/prog_statevars.c
@@ -37,6 +37,7 @@
 #include "main/fbobject.h"
 #include "prog_statevars.h"
 #include "prog_parameter.h"
+#include "main/samplerobj.h"
 
 
 /**
@@ -555,11 +556,13 @@ _mesa_fetch_state(struct gl_context *ctx, const gl_state_index state[],
             const int unit = (int) state[2];
             const struct gl_texture_object *texObj
                = ctx->Texture.Unit[unit]._Current;
+            const struct gl_sampler_object *samp =
+               _mesa_get_samplerobj(ctx, unit);
             if (texObj) {
                value[0] =
                value[1] =
                value[2] =
-               value[3] = texObj->Sampler.CompareFailValue;
+               value[3] = samp->CompareFailValue;
             }
          }
          return;
diff --git a/mesalib/src/mesa/state_tracker/st_atom_texture.c b/mesalib/src/mesa/state_tracker/st_atom_texture.c
index f27a320a5..fefa59860 100644
--- a/mesalib/src/mesa/state_tracker/st_atom_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_atom_texture.c
@@ -147,7 +147,7 @@ st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
    struct pipe_sampler_view templ;
    GLuint swizzle = apply_depthmode(stObj->pt->format,
                                     stObj->base._Swizzle,
-                                    samp->DepthMode);
+                                    stObj->base.DepthMode);
 
    u_sampler_view_default_template(&templ,
                                    stObj->pt,
@@ -240,7 +240,7 @@ update_single_texture(struct st_context *st,
    if (stObj->sampler_view) {
       if (check_sampler_swizzle(stObj->sampler_view,
 				stObj->base._Swizzle,
-				samp->DepthMode) ||
+				stObj->base.DepthMode) ||
 	  (st_view_format != stObj->sampler_view->format) ||
 	  stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {
 	 pipe_sampler_view_reference(&stObj->sampler_view, NULL);
diff --git a/mesalib/src/mesa/state_tracker/st_cb_blit.c b/mesalib/src/mesa/state_tracker/st_cb_blit.c
index b189cb406..1486779fd 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_blit.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_blit.c
@@ -80,8 +80,9 @@ st_BlitFramebuffer_resolve(struct gl_context *ctx,
 
       info->src.res = srcRb->texture;
       info->src.layer = srcRb->surface->u.tex.first_layer;
-
-      info->dst.surface = dstRb->surface;
+      info->dst.res = dstRb->texture;
+      info->dst.level = dstRb->surface->u.tex.level;
+      info->dst.layer = dstRb->surface->u.tex.first_layer;
 
       st->pipe->resource_resolve(st->pipe, info);
    }
@@ -113,8 +114,9 @@ st_BlitFramebuffer_resolve(struct gl_context *ctx,
 
          info->src.res = srcRb->texture;
          info->src.layer = srcRb->surface->u.tex.first_layer;
-
-         info->dst.surface = dstRb->surface;
+         info->dst.res = dstRb->texture;
+         info->dst.level = dstRb->surface->u.tex.level;
+         info->dst.layer = dstRb->surface->u.tex.first_layer;
 
          st->pipe->resource_resolve(st->pipe, info);
       }
@@ -128,8 +130,9 @@ st_BlitFramebuffer_resolve(struct gl_context *ctx,
 
          info->src.res = srcRb->texture;
          info->src.layer = srcRb->surface->u.tex.first_layer;
-
-         info->dst.surface = dstRb->surface;
+         info->dst.res = dstRb->texture;
+         info->dst.level = dstRb->surface->u.tex.level;
+         info->dst.layer = dstRb->surface->u.tex.first_layer;
 
          st->pipe->resource_resolve(st->pipe, info);
       }
diff --git a/mesalib/src/mesa/state_tracker/st_extensions.c b/mesalib/src/mesa/state_tracker/st_extensions.c
index 5099acdb5..2f034cb28 100644
--- a/mesalib/src/mesa/state_tracker/st_extensions.c
+++ b/mesalib/src/mesa/state_tracker/st_extensions.c
@@ -487,7 +487,6 @@ void st_init_extensions(struct st_context *st)
    ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
    ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
    ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
-   ctx->Extensions.ARB_sampler_objects = GL_TRUE;
    ctx->Extensions.ARB_shader_objects = GL_TRUE;
    ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
    ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
diff --git a/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c b/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 90af1b009..4d99b17dd 100644
--- a/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -680,7 +680,7 @@ compile_instruction(
 {
    struct ureg_program *ureg = t->ureg;
    GLuint i;
-   struct ureg_dst dst[1];
+   struct ureg_dst dst[1] = { { 0 } };
    struct ureg_src src[4];
    unsigned num_dst;
    unsigned num_src;
diff --git a/mesalib/src/mesa/swrast/s_atifragshader.c b/mesalib/src/mesa/swrast/s_atifragshader.c
index 1eb026e00..394fac50b 100644
--- a/mesalib/src/mesa/swrast/s_atifragshader.c
+++ b/mesalib/src/mesa/swrast/s_atifragshader.c
@@ -23,6 +23,7 @@
 #include "main/colormac.h"
 #include "main/macros.h"
 #include "main/atifragshader.h"
+#include "main/samplerobj.h"
 #include "swrast/s_atifragshader.h"
 #include "swrast/s_context.h"
 
@@ -49,8 +50,9 @@ fetch_texel(struct gl_context * ctx, const GLfloat texcoord[4], GLfloat lambda,
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 
    /* XXX use a float-valued TextureSample routine here!!! */
-   swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current,
-                               1, (const GLfloat(*)[4]) texcoord,
+   swrast->TextureSample[unit](ctx, _mesa_get_samplerobj(ctx, unit),
+                               ctx->Texture.Unit[unit]._Current,
+			       1, (const GLfloat(*)[4]) texcoord,
                                &lambda, (GLfloat (*)[4]) color);
 }
 
diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c
index 432db71c8..4ed7b94c7 100644
--- a/mesalib/src/mesa/swrast/s_context.c
+++ b/mesalib/src/mesa/swrast/s_context.c
@@ -480,9 +480,7 @@ _swrast_update_texture_samplers(struct gl_context *ctx)
       /* Note: If tObj is NULL, the sample function will be a simple
        * function that just returns opaque black (0,0,0,1).
        */
-      if (tObj) {
-         _mesa_update_fetch_functions(tObj);
-      }
+      _mesa_update_fetch_functions(ctx, u);
       swrast->TextureSample[u] =
          _swrast_choose_texture_sample_func(ctx, tObj,
                                             _mesa_get_samplerobj(ctx, u));
diff --git a/mesalib/src/mesa/swrast/s_context.h b/mesalib/src/mesa/swrast/s_context.h
index 26b97f78d..18353c416 100644
--- a/mesalib/src/mesa/swrast/s_context.h
+++ b/mesalib/src/mesa/swrast/s_context.h
@@ -52,6 +52,7 @@
 
 
 typedef void (*texture_sample_func)(struct gl_context *ctx,
+                                    const struct gl_sampler_object *samp,
                                     const struct gl_texture_object *tObj,
                                     GLuint n, const GLfloat texcoords[][4],
                                     const GLfloat lambda[], GLfloat rgba[][4]);
diff --git a/mesalib/src/mesa/swrast/s_fragprog.c b/mesalib/src/mesa/swrast/s_fragprog.c
index 8d59371c8..812189f09 100644
--- a/mesalib/src/mesa/swrast/s_fragprog.c
+++ b/mesalib/src/mesa/swrast/s_fragprog.c
@@ -24,6 +24,7 @@
 
 #include "main/glheader.h"
 #include "main/colormac.h"
+#include "main/samplerobj.h"
 #include "program/prog_instruction.h"
 
 #include "s_context.h"
@@ -83,11 +84,12 @@ fetch_texel_lod( struct gl_context *ctx, const GLfloat texcoord[4], GLfloat lamb
    if (texObj) {
       SWcontext *swrast = SWRAST_CONTEXT(ctx);
       GLfloat rgba[4];
+      const struct gl_sampler_object *samp = _mesa_get_samplerobj(ctx, unit);
 
-      lambda = CLAMP(lambda, texObj->Sampler.MinLod, texObj->Sampler.MaxLod);
+      lambda = CLAMP(lambda, samp->MinLod, samp->MaxLod);
 
-      swrast->TextureSample[unit](ctx, texObj, 1,
-                                  (const GLfloat (*)[4]) texcoord,
+      swrast->TextureSample[unit](ctx, samp, ctx->Texture.Unit[unit]._Current,
+                                  1, (const GLfloat (*)[4]) texcoord,
                                   &lambda, &rgba);
       swizzle_texel(rgba, color, texObj->_Swizzle);
    }
@@ -118,6 +120,7 @@ fetch_texel_deriv( struct gl_context *ctx, const GLfloat texcoord[4],
          texObj->Image[0][texObj->BaseLevel];
       const struct swrast_texture_image *swImg =
          swrast_texture_image_const(texImg);
+      const struct gl_sampler_object *samp = _mesa_get_samplerobj(ctx, unit);
       const GLfloat texW = (GLfloat) swImg->WidthScale;
       const GLfloat texH = (GLfloat) swImg->HeightScale;
       GLfloat lambda;
@@ -130,12 +133,12 @@ fetch_texel_deriv( struct gl_context *ctx, const GLfloat texcoord[4],
                                       texcoord[0], texcoord[1], texcoord[3],
                                       1.0F / texcoord[3]);
 
-      lambda += lodBias + texUnit->LodBias + texObj->Sampler.LodBias;
+      lambda += lodBias + texUnit->LodBias + samp->LodBias;
 
-      lambda = CLAMP(lambda, texObj->Sampler.MinLod, texObj->Sampler.MaxLod);
+      lambda = CLAMP(lambda, samp->MinLod, samp->MaxLod);
 
-      swrast->TextureSample[unit](ctx, texObj, 1,
-                                  (const GLfloat (*)[4]) texcoord,
+      swrast->TextureSample[unit](ctx, samp, ctx->Texture.Unit[unit]._Current,
+                                  1, (const GLfloat (*)[4]) texcoord,
                                   &lambda, &rgba);
       swizzle_texel(rgba, color, texObj->_Swizzle);
    }
diff --git a/mesalib/src/mesa/swrast/s_span.c b/mesalib/src/mesa/swrast/s_span.c
index 627ef1136..ef51479fd 100644
--- a/mesalib/src/mesa/swrast/s_span.c
+++ b/mesalib/src/mesa/swrast/s_span.c
@@ -38,6 +38,7 @@
 #include "main/macros.h"
 #include "main/imports.h"
 #include "main/image.h"
+#include "main/samplerobj.h"
 
 #include "s_atifragshader.h"
 #include "s_alpha.h"
@@ -497,14 +498,15 @@ interpolate_texcoords(struct gl_context *ctx, SWspan *span)
             const struct gl_texture_image *img = obj->Image[0][obj->BaseLevel];
             const struct swrast_texture_image *swImg =
                swrast_texture_image_const(img);
+            const struct gl_sampler_object *samp = _mesa_get_samplerobj(ctx, u);
 
-            needLambda = (obj->Sampler.MinFilter != obj->Sampler.MagFilter)
+            needLambda = (samp->MinFilter != samp->MagFilter)
                || _swrast_use_fragment_program(ctx);
             /* LOD is calculated directly in the ansiotropic filter, we can
              * skip the normal lambda function as the result is ignored.
              */
-            if (obj->Sampler.MaxAnisotropy > 1.0 &&
-                obj->Sampler.MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
+            if (samp->MaxAnisotropy > 1.0 &&
+                samp->MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
                needLambda = GL_FALSE;
             }
             texW = swImg->WidthScale;
diff --git a/mesalib/src/mesa/swrast/s_texcombine.c b/mesalib/src/mesa/swrast/s_texcombine.c
index 8fbf988b4..2a323613e 100644
--- a/mesalib/src/mesa/swrast/s_texcombine.c
+++ b/mesalib/src/mesa/swrast/s_texcombine.c
@@ -29,6 +29,7 @@
 #include "main/colormac.h"
 #include "main/imports.h"
 #include "main/pixeltransfer.h"
+#include "main/samplerobj.h"
 #include "program/prog_instruction.h"
 
 #include "s_context.h"
@@ -652,7 +653,7 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
             span->array->attribs[FRAG_ATTRIB_TEX0 +
                ctx->Texture.Unit[unit].BumpTarget - GL_TEXTURE0];
 
-         const struct gl_texture_object *curObj = texUnit->_Current;
+         const struct gl_sampler_object *samp = _mesa_get_samplerobj(ctx, unit);
          GLfloat *lambda = span->array->lambda[unit];
          float4_array texels = get_texel_array(swrast, unit);
          GLuint i;
@@ -663,9 +664,9 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
 
          /* adjust texture lod (lambda) */
          if (span->arrayMask & SPAN_LAMBDA) {
-            if (texUnit->LodBias + curObj->Sampler.LodBias != 0.0F) {
+            if (texUnit->LodBias + samp->LodBias != 0.0F) {
                /* apply LOD bias, but don't clamp yet */
-               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->Sampler.LodBias,
+               const GLfloat bias = CLAMP(texUnit->LodBias + samp->LodBias,
                                           -ctx->Const.MaxTextureLodBias,
                                           ctx->Const.MaxTextureLodBias);
                GLuint i;
@@ -674,11 +675,11 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
                }
             }
 
-            if (curObj->Sampler.MinLod != -1000.0 ||
-                curObj->Sampler.MaxLod != 1000.0) {
+            if (samp->MinLod != -1000.0 ||
+                samp->MaxLod != 1000.0) {
                /* apply LOD clamping to lambda */
-               const GLfloat min = curObj->Sampler.MinLod;
-               const GLfloat max = curObj->Sampler.MaxLod;
+               const GLfloat min = samp->MinLod;
+               const GLfloat max = samp->MaxLod;
                GLuint i;
                for (i = 0; i < span->end; i++) {
                   GLfloat l = lambda[i];
@@ -688,8 +689,9 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
          }
 
          /* Sample the texture (span->end = number of fragments) */
-         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,
-                                      texcoords, lambda, texels );
+         swrast->TextureSample[unit]( ctx, samp,
+                                      ctx->Texture.Unit[unit]._Current,
+                                      span->end, texcoords, lambda, texels );
 
          /* manipulate the span values of the bump target
             not sure this can work correctly even ignoring
@@ -714,14 +716,15 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
          const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])
             span->array->attribs[FRAG_ATTRIB_TEX0 + unit];
          const struct gl_texture_object *curObj = texUnit->_Current;
+         const struct gl_sampler_object *samp = _mesa_get_samplerobj(ctx, unit);
          GLfloat *lambda = span->array->lambda[unit];
          float4_array texels = get_texel_array(swrast, unit);
 
          /* adjust texture lod (lambda) */
          if (span->arrayMask & SPAN_LAMBDA) {
-            if (texUnit->LodBias + curObj->Sampler.LodBias != 0.0F) {
+            if (texUnit->LodBias + samp->LodBias != 0.0F) {
                /* apply LOD bias, but don't clamp yet */
-               const GLfloat bias = CLAMP(texUnit->LodBias + curObj->Sampler.LodBias,
+               const GLfloat bias = CLAMP(texUnit->LodBias + samp->LodBias,
                                           -ctx->Const.MaxTextureLodBias,
                                           ctx->Const.MaxTextureLodBias);
                GLuint i;
@@ -730,11 +733,11 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
                }
             }
 
-            if (curObj->Sampler.MinLod != -1000.0 ||
-                curObj->Sampler.MaxLod != 1000.0) {
+            if (samp->MinLod != -1000.0 ||
+                samp->MaxLod != 1000.0) {
                /* apply LOD clamping to lambda */
-               const GLfloat min = curObj->Sampler.MinLod;
-               const GLfloat max = curObj->Sampler.MaxLod;
+               const GLfloat min = samp->MinLod;
+               const GLfloat max = samp->MaxLod;
                GLuint i;
                for (i = 0; i < span->end; i++) {
                   GLfloat l = lambda[i];
@@ -742,8 +745,8 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
                }
             }
          }
-         else if (curObj->Sampler.MaxAnisotropy > 1.0 &&
-                  curObj->Sampler.MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
+         else if (samp->MaxAnisotropy > 1.0 &&
+                  samp->MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
             /* sample_lambda_2d_aniso is beeing used as texture_sample_func,
              * it requires the current SWspan *span as an additional parameter.
              * In order to keep the same function signature, the unused lambda
@@ -756,8 +759,9 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
          }
 
          /* Sample the texture (span->end = number of fragments) */
-         swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,
-                                      texcoords, lambda, texels );
+         swrast->TextureSample[unit]( ctx, samp,
+                                      ctx->Texture.Unit[unit]._Current,
+                                      span->end, texcoords, lambda, texels );
 
          /* GL_EXT_texture_swizzle */
          if (curObj->_Swizzle != SWIZZLE_NOOP) {
diff --git a/mesalib/src/mesa/swrast/s_texfetch.c b/mesalib/src/mesa/swrast/s_texfetch.c
index 12ee47963..db7c887b6 100644
--- a/mesalib/src/mesa/swrast/s_texfetch.c
+++ b/mesalib/src/mesa/swrast/s_texfetch.c
@@ -41,6 +41,7 @@
 #include "main/texcompress_rgtc.h"
 #include "main/texcompress_etc.h"
 #include "main/teximage.h"
+#include "main/samplerobj.h"
 #include "s_context.h"
 #include "s_texfetch.h"
 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
@@ -1147,13 +1148,14 @@ _mesa_get_texel_fetch_func(gl_format format, GLuint dims)
  * Initialize the texture image's FetchTexel methods.
  */
 static void
-set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims)
+set_fetch_functions(struct gl_sampler_object *samp,
+                    struct swrast_texture_image *texImage, GLuint dims)
 {
    gl_format format = texImage->Base.TexFormat;
 
    ASSERT(dims == 1 || dims == 2 || dims == 3);
 
-   if (texImage->Base.TexObject->Sampler.sRGBDecode == GL_SKIP_DECODE_EXT &&
+   if (samp->sRGBDecode == GL_SKIP_DECODE_EXT &&
        _mesa_get_format_color_encoding(format) == GL_SRGB) {
       format = _mesa_get_srgb_format_linear(format);
    }
@@ -1163,17 +1165,25 @@ set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims)
 }
 
 void
-_mesa_update_fetch_functions(struct gl_texture_object *texObj)
+_mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit)
 {
+   struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
+   struct gl_sampler_object *samp;
    GLuint face, i;
    GLuint dims;
 
+   if (!texObj)
+      return;
+
+   samp = _mesa_get_samplerobj(ctx, unit);
+
    dims = _mesa_get_texture_dimensions(texObj->Target);
 
    for (face = 0; face < 6; face++) {
       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
          if (texObj->Image[face][i]) {
-	    set_fetch_functions(swrast_texture_image(texObj->Image[face][i]),
+	    set_fetch_functions(samp,
+                                swrast_texture_image(texObj->Image[face][i]),
                                 dims);
          }
       }
diff --git a/mesalib/src/mesa/swrast/s_texfetch.h b/mesalib/src/mesa/swrast/s_texfetch.h
index 1aa7ce573..33950ce44 100644
--- a/mesalib/src/mesa/swrast/s_texfetch.h
+++ b/mesalib/src/mesa/swrast/s_texfetch.h
@@ -33,6 +33,6 @@ extern FetchTexelFunc
 _mesa_get_texel_fetch_func(gl_format format, GLuint dims);
 
 void
-_mesa_update_fetch_functions(struct gl_texture_object *texObj);
+_mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit);
 
 #endif /* S_TEXFETCH_H */
diff --git a/mesalib/src/mesa/swrast/s_texfilter.c b/mesalib/src/mesa/swrast/s_texfilter.c
index 412316f36..51c899208 100644
--- a/mesalib/src/mesa/swrast/s_texfilter.c
+++ b/mesalib/src/mesa/swrast/s_texfilter.c
@@ -28,6 +28,7 @@
 #include "main/colormac.h"
 #include "main/imports.h"
 #include "main/texobj.h"
+#include "main/samplerobj.h"
 
 #include "s_context.h"
 #include "s_texfilter.h"
@@ -498,7 +499,8 @@ tex_array_slice(GLfloat coord, GLsizei size)
  * NOTE: only used for depth texture sampling.
  */
 static inline void
-nearest_texcoord(const struct gl_texture_object *texObj,
+nearest_texcoord(const struct gl_sampler_object *samp,
+                 const struct gl_texture_object *texObj,
                  GLuint level,
                  const GLfloat texcoord[4],
                  GLint *i, GLint *j, GLint *k)
@@ -510,28 +512,28 @@ nearest_texcoord(const struct gl_texture_object *texObj,
 
    switch (texObj->Target) {
    case GL_TEXTURE_RECTANGLE_ARB:
-      *i = clamp_rect_coord_nearest(texObj->Sampler.WrapS, texcoord[0], width);
-      *j = clamp_rect_coord_nearest(texObj->Sampler.WrapT, texcoord[1], height);
+      *i = clamp_rect_coord_nearest(samp->WrapS, texcoord[0], width);
+      *j = clamp_rect_coord_nearest(samp->WrapT, texcoord[1], height);
       *k = 0;
       break;
    case GL_TEXTURE_1D:
-      *i = nearest_texel_location(texObj->Sampler.WrapS, img, width, texcoord[0]);
+      *i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
       *j = 0;
       *k = 0;
       break;
    case GL_TEXTURE_2D:
-      *i = nearest_texel_location(texObj->Sampler.WrapS, img, width, texcoord[0]);
-      *j = nearest_texel_location(texObj->Sampler.WrapT, img, height, texcoord[1]);
+      *i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
+      *j = nearest_texel_location(samp->WrapT, img, height, texcoord[1]);
       *k = 0;
       break;
    case GL_TEXTURE_1D_ARRAY_EXT:
-      *i = nearest_texel_location(texObj->Sampler.WrapS, img, width, texcoord[0]);
+      *i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
       *j = tex_array_slice(texcoord[1], height);
       *k = 0;
       break;
    case GL_TEXTURE_2D_ARRAY_EXT:
-      *i = nearest_texel_location(texObj->Sampler.WrapS, img, width, texcoord[0]);
-      *j = nearest_texel_location(texObj->Sampler.WrapT, img, height, texcoord[1]);
+      *i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
+      *j = nearest_texel_location(samp->WrapT, img, height, texcoord[1]);
       *k = tex_array_slice(texcoord[2], depth);
       break;
    default:
@@ -546,7 +548,8 @@ nearest_texcoord(const struct gl_texture_object *texObj,
  * NOTE: only used for depth texture sampling.
  */
 static inline void
-linear_texcoord(const struct gl_texture_object *texObj,
+linear_texcoord(const struct gl_sampler_object *samp,
+                const struct gl_texture_object *texObj,
                 GLuint level,
                 const GLfloat texcoord[4],
                 GLint *i0, GLint *i1, GLint *j0, GLint *j1, GLint *slice,
@@ -559,24 +562,24 @@ linear_texcoord(const struct gl_texture_object *texObj,
 
    switch (texObj->Target) {
    case GL_TEXTURE_RECTANGLE_ARB:
-      clamp_rect_coord_linear(texObj->Sampler.WrapS, texcoord[0],
+      clamp_rect_coord_linear(samp->WrapS, texcoord[0],
                               width, i0, i1, wi);
-      clamp_rect_coord_linear(texObj->Sampler.WrapT, texcoord[1],
+      clamp_rect_coord_linear(samp->WrapT, texcoord[1],
                               height, j0, j1, wj);
       *slice = 0;
       break;
 
    case GL_TEXTURE_1D:
    case GL_TEXTURE_2D:
-      linear_texel_locations(texObj->Sampler.WrapS, img, width,
+      linear_texel_locations(samp->WrapS, img, width,
                              texcoord[0], i0, i1, wi);
-      linear_texel_locations(texObj->Sampler.WrapT, img, height,
+      linear_texel_locations(samp->WrapT, img, height,
                              texcoord[1], j0, j1, wj);
       *slice = 0;
       break;
 
    case GL_TEXTURE_1D_ARRAY_EXT:
-      linear_texel_locations(texObj->Sampler.WrapS, img, width,
+      linear_texel_locations(samp->WrapS, img, width,
                              texcoord[0], i0, i1, wi);
       *j0 = tex_array_slice(texcoord[1], height);
       *j1 = *j0;
@@ -584,9 +587,9 @@ linear_texcoord(const struct gl_texture_object *texObj,
       break;
 
    case GL_TEXTURE_2D_ARRAY_EXT:
-      linear_texel_locations(texObj->Sampler.WrapS, img, width,
+      linear_texel_locations(samp->WrapS, img, width,
                              texcoord[0], i0, i1, wi);
-      linear_texel_locations(texObj->Sampler.WrapT, img, height,
+      linear_texel_locations(samp->WrapT, img, height,
                              texcoord[1], j0, j1, wj);
       *slice = tex_array_slice(texcoord[2], depth);
       break;
@@ -655,7 +658,7 @@ nearest_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
  * determines the subranges in [0, n-1] that are to be minified or magnified.
  */
 static inline void
-compute_min_mag_ranges(const struct gl_texture_object *tObj,
+compute_min_mag_ranges(const struct gl_sampler_object *samp,
                        GLuint n, const GLfloat lambda[],
                        GLuint *minStart, GLuint *minEnd,
                        GLuint *magStart, GLuint *magEnd)
@@ -663,12 +666,12 @@ compute_min_mag_ranges(const struct gl_texture_object *tObj,
    GLfloat minMagThresh;
 
    /* we shouldn't be here if minfilter == magfilter */
-   ASSERT(tObj->Sampler.MinFilter != tObj->Sampler.MagFilter);
+   ASSERT(samp->MinFilter != samp->MagFilter);
 
    /* This bit comes from the OpenGL spec: */
-   if (tObj->Sampler.MagFilter == GL_LINEAR
-       && (tObj->Sampler.MinFilter == GL_NEAREST_MIPMAP_NEAREST ||
-           tObj->Sampler.MinFilter == GL_NEAREST_MIPMAP_LINEAR)) {
+   if (samp->MagFilter == GL_LINEAR
+       && (samp->MinFilter == GL_NEAREST_MIPMAP_NEAREST ||
+           samp->MinFilter == GL_NEAREST_MIPMAP_LINEAR)) {
       minMagThresh = 0.5F;
    }
    else {
@@ -764,34 +767,34 @@ compute_min_mag_ranges(const struct gl_texture_object *tObj,
  * we return (0,0,0,BorderAlpha).
  */
 static inline void
-get_border_color(const struct gl_texture_object *tObj,
+get_border_color(const struct gl_sampler_object *samp,
                  const struct gl_texture_image *img,
                  GLfloat rgba[4])
 {
    switch (img->_BaseFormat) {
    case GL_RGB:
-      rgba[0] = tObj->Sampler.BorderColor.f[0];
-      rgba[1] = tObj->Sampler.BorderColor.f[1];
-      rgba[2] = tObj->Sampler.BorderColor.f[2];
+      rgba[0] = samp->BorderColor.f[0];
+      rgba[1] = samp->BorderColor.f[1];
+      rgba[2] = samp->BorderColor.f[2];
       rgba[3] = 1.0F;
       break;
    case GL_ALPHA:
       rgba[0] = rgba[1] = rgba[2] = 0.0;
-      rgba[3] = tObj->Sampler.BorderColor.f[3];
+      rgba[3] = samp->BorderColor.f[3];
       break;
    case GL_LUMINANCE:
-      rgba[0] = rgba[1] = rgba[2] = tObj->Sampler.BorderColor.f[0];
+      rgba[0] = rgba[1] = rgba[2] = samp->BorderColor.f[0];
       rgba[3] = 1.0;
       break;
    case GL_LUMINANCE_ALPHA:
-      rgba[0] = rgba[1] = rgba[2] = tObj->Sampler.BorderColor.f[0];
-      rgba[3] = tObj->Sampler.BorderColor.f[3];
+      rgba[0] = rgba[1] = rgba[2] = samp->BorderColor.f[0];
+      rgba[3] = samp->BorderColor.f[3];
       break;
    case GL_INTENSITY:
-      rgba[0] = rgba[1] = rgba[2] = rgba[3] = tObj->Sampler.BorderColor.f[0];
+      rgba[0] = rgba[1] = rgba[2] = rgba[3] = samp->BorderColor.f[0];
       break;
    default:
-      COPY_4V(rgba, tObj->Sampler.BorderColor.f);
+      COPY_4V(rgba, samp->BorderColor.f);
       break;
    }
 }
@@ -806,19 +809,19 @@ get_border_color(const struct gl_texture_object *tObj,
  */
 static inline void
 sample_1d_nearest(struct gl_context *ctx,
-                  const struct gl_texture_object *tObj,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_image *img,
                   const GLfloat texcoord[4], GLfloat rgba[4])
 {
    const struct swrast_texture_image *swImg = swrast_texture_image_const(img);
    const GLint width = img->Width2;  /* without border, power of two */
    GLint i;
-   i = nearest_texel_location(tObj->Sampler.WrapS, img, width, texcoord[0]);
+   i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
    /* skip over the border, if any */
    i += img->Border;
    if (i < 0 || i >= (GLint) img->Width) {
       /* Need this test for GL_CLAMP_TO_BORDER mode */
-      get_border_color(tObj, img, rgba);
+      get_border_color(samp, img, rgba);
    }
    else {
       swImg->FetchTexel(swImg, i, 0, 0, rgba);
@@ -831,7 +834,7 @@ sample_1d_nearest(struct gl_context *ctx,
  */
 static inline void
 sample_1d_linear(struct gl_context *ctx,
-                 const struct gl_texture_object *tObj,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_image *img,
                  const GLfloat texcoord[4], GLfloat rgba[4])
 {
@@ -842,7 +845,7 @@ sample_1d_linear(struct gl_context *ctx,
    GLfloat a;
    GLfloat t0[4], t1[4];  /* texels */
 
-   linear_texel_locations(tObj->Sampler.WrapS, img, width, texcoord[0], &i0, &i1, &a);
+   linear_texel_locations(samp->WrapS, img, width, texcoord[0], &i0, &i1, &a);
 
    if (img->Border) {
       i0 += img->Border;
@@ -855,13 +858,13 @@ sample_1d_linear(struct gl_context *ctx,
 
    /* fetch texel colors */
    if (useBorderColor & I0BIT) {
-      get_border_color(tObj, img, t0);
+      get_border_color(samp, img, t0);
    }
    else {
       swImg->FetchTexel(swImg, i0, 0, 0, t0);
    }
    if (useBorderColor & I1BIT) {
-      get_border_color(tObj, img, t1);
+      get_border_color(samp, img, t1);
    }
    else {
       swImg->FetchTexel(swImg, i1, 0, 0, t1);
@@ -873,6 +876,7 @@ sample_1d_linear(struct gl_context *ctx,
 
 static void
 sample_1d_nearest_mipmap_nearest(struct gl_context *ctx,
+                                 const struct gl_sampler_object *samp,
                                  const struct gl_texture_object *tObj,
                                  GLuint n, const GLfloat texcoord[][4],
                                  const GLfloat lambda[], GLfloat rgba[][4])
@@ -881,13 +885,14 @@ sample_1d_nearest_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_1d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_1d_nearest(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_1d_linear_mipmap_nearest(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -896,13 +901,14 @@ sample_1d_linear_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_1d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_1d_linear(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_1d_nearest_mipmap_linear(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -912,14 +918,14 @@ sample_1d_nearest_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_1d_nearest(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                            texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];
          const GLfloat f = FRAC(lambda[i]);
-         sample_1d_nearest(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_1d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_1d_nearest(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_1d_nearest(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -928,6 +934,7 @@ sample_1d_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_1d_linear_mipmap_linear(struct gl_context *ctx,
+                               const struct gl_sampler_object *samp,
                                const struct gl_texture_object *tObj,
                                GLuint n, const GLfloat texcoord[][4],
                                const GLfloat lambda[], GLfloat rgba[][4])
@@ -937,14 +944,14 @@ sample_1d_linear_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_1d_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];
          const GLfloat f = FRAC(lambda[i]);
-         sample_1d_linear(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_1d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_1d_linear(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_1d_linear(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -954,6 +961,7 @@ sample_1d_linear_mipmap_linear(struct gl_context *ctx,
 /** Sample 1D texture, nearest filtering for both min/magnification */
 static void
 sample_nearest_1d( struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
                    const struct gl_texture_object *tObj, GLuint n,
                    const GLfloat texcoords[][4], const GLfloat lambda[],
                    GLfloat rgba[][4] )
@@ -962,7 +970,7 @@ sample_nearest_1d( struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_1d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_1d_nearest(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -970,6 +978,7 @@ sample_nearest_1d( struct gl_context *ctx,
 /** Sample 1D texture, linear filtering for both min/magnification */
 static void
 sample_linear_1d( struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_object *tObj, GLuint n,
                   const GLfloat texcoords[][4], const GLfloat lambda[],
                   GLfloat rgba[][4] )
@@ -978,7 +987,7 @@ sample_linear_1d( struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_1d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_1d_linear(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -986,6 +995,7 @@ sample_linear_1d( struct gl_context *ctx,
 /** Sample 1D texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_1d( struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_object *tObj, GLuint n,
                   const GLfloat texcoords[][4],
                   const GLfloat lambda[], GLfloat rgba[][4] )
@@ -995,37 +1005,37 @@ sample_lambda_1d( struct gl_context *ctx,
    GLuint i;
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       const GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
          for (i = minStart; i < minEnd; i++)
-            sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = minStart; i < minEnd; i++)
-            sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                              texcoords[i], rgba[i]);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_1d_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_1d_nearest_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                           lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_1d_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_1d_linear_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_1d_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_1d_nearest_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
-         sample_1d_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_1d_linear_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                         lambda + minStart, rgba + minStart);
          break;
       default:
@@ -1036,15 +1046,15 @@ sample_lambda_1d( struct gl_context *ctx,
 
    if (magStart < magEnd) {
       /* do the magnified texels */
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
          for (i = magStart; i < magEnd; i++)
-            sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = magStart; i < magEnd; i++)
-            sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                              texcoords[i], rgba[i]);
          break;
       default:
@@ -1065,7 +1075,7 @@ sample_lambda_1d( struct gl_context *ctx,
  */
 static inline void
 sample_2d_nearest(struct gl_context *ctx,
-                  const struct gl_texture_object *tObj,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_image *img,
                   const GLfloat texcoord[4],
                   GLfloat rgba[])
@@ -1076,8 +1086,8 @@ sample_2d_nearest(struct gl_context *ctx,
    GLint i, j;
    (void) ctx;
 
-   i = nearest_texel_location(tObj->Sampler.WrapS, img, width, texcoord[0]);
-   j = nearest_texel_location(tObj->Sampler.WrapT, img, height, texcoord[1]);
+   i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
+   j = nearest_texel_location(samp->WrapT, img, height, texcoord[1]);
 
    /* skip over the border, if any */
    i += img->Border;
@@ -1085,7 +1095,7 @@ sample_2d_nearest(struct gl_context *ctx,
 
    if (i < 0 || i >= (GLint) img->Width || j < 0 || j >= (GLint) img->Height) {
       /* Need this test for GL_CLAMP_TO_BORDER mode */
-      get_border_color(tObj, img, rgba);
+      get_border_color(samp, img, rgba);
    }
    else {
       swImg->FetchTexel(swImg, i, j, 0, rgba);
@@ -1099,7 +1109,7 @@ sample_2d_nearest(struct gl_context *ctx,
  */
 static inline void
 sample_2d_linear(struct gl_context *ctx,
-                 const struct gl_texture_object *tObj,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_image *img,
                  const GLfloat texcoord[4],
                  GLfloat rgba[])
@@ -1112,8 +1122,8 @@ sample_2d_linear(struct gl_context *ctx,
    GLfloat a, b;
    GLfloat t00[4], t10[4], t01[4], t11[4]; /* sampled texel colors */
 
-   linear_texel_locations(tObj->Sampler.WrapS, img, width, texcoord[0],  &i0, &i1, &a);
-   linear_texel_locations(tObj->Sampler.WrapT, img, height, texcoord[1], &j0, &j1, &b);
+   linear_texel_locations(samp->WrapS, img, width, texcoord[0],  &i0, &i1, &a);
+   linear_texel_locations(samp->WrapT, img, height, texcoord[1], &j0, &j1, &b);
 
    if (img->Border) {
       i0 += img->Border;
@@ -1130,25 +1140,25 @@ sample_2d_linear(struct gl_context *ctx,
 
    /* fetch four texel colors */
    if (useBorderColor & (I0BIT | J0BIT)) {
-      get_border_color(tObj, img, t00);
+      get_border_color(samp, img, t00);
    }
    else {
       swImg->FetchTexel(swImg, i0, j0, 0, t00);
    }
    if (useBorderColor & (I1BIT | J0BIT)) {
-      get_border_color(tObj, img, t10);
+      get_border_color(samp, img, t10);
    }
    else {
       swImg->FetchTexel(swImg, i1, j0, 0, t10);
    }
    if (useBorderColor & (I0BIT | J1BIT)) {
-      get_border_color(tObj, img, t01);
+      get_border_color(samp, img, t01);
    }
    else {
       swImg->FetchTexel(swImg, i0, j1, 0, t01);
    }
    if (useBorderColor & (I1BIT | J1BIT)) {
-      get_border_color(tObj, img, t11);
+      get_border_color(samp, img, t11);
    }
    else {
       swImg->FetchTexel(swImg, i1, j1, 0, t11);
@@ -1164,7 +1174,7 @@ sample_2d_linear(struct gl_context *ctx,
  */
 static inline void
 sample_2d_linear_repeat(struct gl_context *ctx,
-                        const struct gl_texture_object *tObj,
+                        const struct gl_sampler_object *samp,
                         const struct gl_texture_image *img,
                         const GLfloat texcoord[4],
                         GLfloat rgba[])
@@ -1178,8 +1188,8 @@ sample_2d_linear_repeat(struct gl_context *ctx,
 
    (void) ctx;
 
-   ASSERT(tObj->Sampler.WrapS == GL_REPEAT);
-   ASSERT(tObj->Sampler.WrapT == GL_REPEAT);
+   ASSERT(samp->WrapS == GL_REPEAT);
+   ASSERT(samp->WrapT == GL_REPEAT);
    ASSERT(img->Border == 0);
    ASSERT(swImg->_IsPowerOfTwo);
 
@@ -1197,6 +1207,7 @@ sample_2d_linear_repeat(struct gl_context *ctx,
 
 static void
 sample_2d_nearest_mipmap_nearest(struct gl_context *ctx,
+                                 const struct gl_sampler_object *samp,
                                  const struct gl_texture_object *tObj,
                                  GLuint n, const GLfloat texcoord[][4],
                                  const GLfloat lambda[], GLfloat rgba[][4])
@@ -1204,13 +1215,14 @@ sample_2d_nearest_mipmap_nearest(struct gl_context *ctx,
    GLuint i;
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_2d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_2d_nearest(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_2d_linear_mipmap_nearest(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -1219,13 +1231,14 @@ sample_2d_linear_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_2d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_2d_linear(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_2d_nearest_mipmap_linear(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -1235,14 +1248,14 @@ sample_2d_nearest_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_nearest(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                            texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_nearest(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_2d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_2d_nearest(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_2d_nearest(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -1251,6 +1264,7 @@ sample_2d_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_2d_linear_mipmap_linear( struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4] )
@@ -1260,14 +1274,14 @@ sample_2d_linear_mipmap_linear( struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_linear(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_2d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_2d_linear(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_2d_linear(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -1276,26 +1290,27 @@ sample_2d_linear_mipmap_linear( struct gl_context *ctx,
 
 static void
 sample_2d_linear_mipmap_linear_repeat(struct gl_context *ctx,
+                                      const struct gl_sampler_object *samp,
                                       const struct gl_texture_object *tObj,
                                       GLuint n, const GLfloat texcoord[][4],
                                       const GLfloat lambda[], GLfloat rgba[][4])
 {
    GLuint i;
    ASSERT(lambda != NULL);
-   ASSERT(tObj->Sampler.WrapS == GL_REPEAT);
-   ASSERT(tObj->Sampler.WrapT == GL_REPEAT);
+   ASSERT(samp->WrapS == GL_REPEAT);
+   ASSERT(samp->WrapT == GL_REPEAT);
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_linear_repeat(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                                  texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level  ],
+         sample_2d_linear_repeat(ctx, samp, tObj->Image[0][level  ],
                                  texcoord[i], t0);
-         sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level+1],
+         sample_2d_linear_repeat(ctx, samp, tObj->Image[0][level+1],
                                  texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
@@ -1306,6 +1321,7 @@ sample_2d_linear_mipmap_linear_repeat(struct gl_context *ctx,
 /** Sample 2D texture, nearest filtering for both min/magnification */
 static void
 sample_nearest_2d(struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_object *tObj, GLuint n,
                   const GLfloat texcoords[][4],
                   const GLfloat lambda[], GLfloat rgba[][4])
@@ -1314,7 +1330,7 @@ sample_nearest_2d(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_2d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_2d_nearest(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -1322,6 +1338,7 @@ sample_nearest_2d(struct gl_context *ctx,
 /** Sample 2D texture, linear filtering for both min/magnification */
 static void
 sample_linear_2d(struct gl_context *ctx,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_object *tObj, GLuint n,
                  const GLfloat texcoords[][4],
                  const GLfloat lambda[], GLfloat rgba[][4])
@@ -1330,17 +1347,17 @@ sample_linear_2d(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    const struct swrast_texture_image *swImg = swrast_texture_image_const(image);
    (void) lambda;
-   if (tObj->Sampler.WrapS == GL_REPEAT &&
-       tObj->Sampler.WrapT == GL_REPEAT &&
+   if (samp->WrapS == GL_REPEAT &&
+       samp->WrapT == GL_REPEAT &&
        swImg->_IsPowerOfTwo &&
        image->Border == 0) {
       for (i = 0; i < n; i++) {
-         sample_2d_linear_repeat(ctx, tObj, image, texcoords[i], rgba[i]);
+         sample_2d_linear_repeat(ctx, samp, image, texcoords[i], rgba[i]);
       }
    }
    else {
       for (i = 0; i < n; i++) {
-         sample_2d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
+         sample_2d_linear(ctx, samp, image, texcoords[i], rgba[i]);
       }
    }
 }
@@ -1356,6 +1373,7 @@ sample_linear_2d(struct gl_context *ctx,
  */
 static void
 opt_sample_rgb_2d(struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_object *tObj,
                   GLuint n, const GLfloat texcoords[][4],
                   const GLfloat lambda[], GLfloat rgba[][4])
@@ -1370,8 +1388,8 @@ opt_sample_rgb_2d(struct gl_context *ctx,
    GLuint k;
    (void) ctx;
    (void) lambda;
-   ASSERT(tObj->Sampler.WrapS==GL_REPEAT);
-   ASSERT(tObj->Sampler.WrapT==GL_REPEAT);
+   ASSERT(samp->WrapS==GL_REPEAT);
+   ASSERT(samp->WrapT==GL_REPEAT);
    ASSERT(img->Border==0);
    ASSERT(img->TexFormat == MESA_FORMAT_RGB888);
    ASSERT(swImg->_IsPowerOfTwo);
@@ -1400,6 +1418,7 @@ opt_sample_rgb_2d(struct gl_context *ctx,
  */
 static void
 opt_sample_rgba_2d(struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
                    const struct gl_texture_object *tObj,
                    GLuint n, const GLfloat texcoords[][4],
                    const GLfloat lambda[], GLfloat rgba[][4])
@@ -1414,8 +1433,8 @@ opt_sample_rgba_2d(struct gl_context *ctx,
    GLuint i;
    (void) ctx;
    (void) lambda;
-   ASSERT(tObj->Sampler.WrapS==GL_REPEAT);
-   ASSERT(tObj->Sampler.WrapT==GL_REPEAT);
+   ASSERT(samp->WrapS==GL_REPEAT);
+   ASSERT(samp->WrapT==GL_REPEAT);
    ASSERT(img->Border==0);
    ASSERT(img->TexFormat == MESA_FORMAT_RGBA8888);
    ASSERT(swImg->_IsPowerOfTwo);
@@ -1437,6 +1456,7 @@ opt_sample_rgba_2d(struct gl_context *ctx,
 /** Sample 2D texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_2d(struct gl_context *ctx,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_object *tObj,
                  GLuint n, const GLfloat texcoords[][4],
                  const GLfloat lambda[], GLfloat rgba[][4])
@@ -1446,63 +1466,63 @@ sample_lambda_2d(struct gl_context *ctx,
    GLuint minStart, minEnd;  /* texels with minification */
    GLuint magStart, magEnd;  /* texels with magnification */
 
-   const GLboolean repeatNoBorderPOT = (tObj->Sampler.WrapS == GL_REPEAT)
-      && (tObj->Sampler.WrapT == GL_REPEAT)
+   const GLboolean repeatNoBorderPOT = (samp->WrapS == GL_REPEAT)
+      && (samp->WrapT == GL_REPEAT)
       && (tImg->Border == 0 && (tImg->Width == swImg->RowStride))
       && swImg->_IsPowerOfTwo;
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       const GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
          if (repeatNoBorderPOT) {
             switch (tImg->TexFormat) {
             case MESA_FORMAT_RGB888:
-               opt_sample_rgb_2d(ctx, tObj, m, texcoords + minStart,
+               opt_sample_rgb_2d(ctx, samp, tObj, m, texcoords + minStart,
                                  NULL, rgba + minStart);
                break;
             case MESA_FORMAT_RGBA8888:
-	       opt_sample_rgba_2d(ctx, tObj, m, texcoords + minStart,
+	       opt_sample_rgba_2d(ctx, samp, tObj, m, texcoords + minStart,
                                   NULL, rgba + minStart);
                break;
             default:
-               sample_nearest_2d(ctx, tObj, m, texcoords + minStart,
+               sample_nearest_2d(ctx, samp, tObj, m, texcoords + minStart,
                                  NULL, rgba + minStart );
             }
          }
          else {
-            sample_nearest_2d(ctx, tObj, m, texcoords + minStart,
+            sample_nearest_2d(ctx, samp, tObj, m, texcoords + minStart,
                               NULL, rgba + minStart);
          }
          break;
       case GL_LINEAR:
-	 sample_linear_2d(ctx, tObj, m, texcoords + minStart,
+	 sample_linear_2d(ctx, samp, tObj, m, texcoords + minStart,
 			  NULL, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_2d_nearest_mipmap_nearest(ctx, tObj, m,
+         sample_2d_nearest_mipmap_nearest(ctx, samp, tObj, m,
                                           texcoords + minStart,
                                           lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_2d_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_2d_linear_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_2d_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_2d_nearest_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
          if (repeatNoBorderPOT)
-            sample_2d_linear_mipmap_linear_repeat(ctx, tObj, m,
+            sample_2d_linear_mipmap_linear_repeat(ctx, samp, tObj, m,
                   texcoords + minStart, lambda + minStart, rgba + minStart);
          else
-            sample_2d_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+            sample_2d_linear_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                         lambda + minStart, rgba + minStart);
          break;
       default:
@@ -1515,30 +1535,30 @@ sample_lambda_2d(struct gl_context *ctx,
       /* do the magnified texels */
       const GLuint m = magEnd - magStart;
 
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
          if (repeatNoBorderPOT) {
             switch (tImg->TexFormat) {
             case MESA_FORMAT_RGB888:
-               opt_sample_rgb_2d(ctx, tObj, m, texcoords + magStart,
+               opt_sample_rgb_2d(ctx, samp, tObj, m, texcoords + magStart,
                                  NULL, rgba + magStart);
                break;
             case MESA_FORMAT_RGBA8888:
-	       opt_sample_rgba_2d(ctx, tObj, m, texcoords + magStart,
+	       opt_sample_rgba_2d(ctx, samp, tObj, m, texcoords + magStart,
                                   NULL, rgba + magStart);
                break;
             default:
-               sample_nearest_2d(ctx, tObj, m, texcoords + magStart,
+               sample_nearest_2d(ctx, samp, tObj, m, texcoords + magStart,
                                  NULL, rgba + magStart );
             }
          }
          else {
-            sample_nearest_2d(ctx, tObj, m, texcoords + magStart,
+            sample_nearest_2d(ctx, samp, tObj, m, texcoords + magStart,
                               NULL, rgba + magStart);
          }
          break;
       case GL_LINEAR:
-	 sample_linear_2d(ctx, tObj, m, texcoords + magStart,
+	 sample_linear_2d(ctx, samp, tObj, m, texcoords + magStart,
 			  NULL, rgba + magStart);
          break;
       default:
@@ -1583,6 +1603,7 @@ create_filter_table(void)
  */
 static void
 sample_2d_ewa(struct gl_context *ctx,
+              const struct gl_sampler_object *samp,
               const struct gl_texture_object *tObj,
               const GLfloat texcoord[4],
               const GLfloat dudx, const GLfloat dvdx,
@@ -1664,7 +1685,7 @@ sample_2d_ewa(struct gl_context *ctx,
             newCoord[0] = u / ((GLfloat) img->Width2);
             newCoord[1] = v / ((GLfloat) img->Height2);
 
-            sample_2d_nearest(ctx, tObj, img, newCoord, rgba);
+            sample_2d_nearest(ctx, samp, img, newCoord, rgba);
             num[0] += weight * rgba[0];
             num[1] += weight * rgba[1];
             num[2] += weight * rgba[2];
@@ -1690,7 +1711,7 @@ sample_2d_ewa(struct gl_context *ctx,
       rgba[2]=0;
       rgba[3]=0;*/
       /* not enough pixels in resampling, resort to direct interpolation */
-      sample_2d_linear(ctx, tObj, img, texcoord, rgba);
+      sample_2d_linear(ctx, samp, img, texcoord, rgba);
       return;
    }
 
@@ -1709,6 +1730,7 @@ sample_2d_ewa(struct gl_context *ctx,
  */
 static void
 sample_2d_footprint(struct gl_context *ctx,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_object *tObj,
                  const GLfloat texcoord[4],
                  const GLfloat dudx, const GLfloat dvdx,
@@ -1751,7 +1773,7 @@ sample_2d_footprint(struct gl_context *ctx,
       newCoord[0] = texcoord[0] + ds * ((GLfloat)(s+1) / (numSamples+1) -0.5);
       newCoord[1] = texcoord[1] + dt * ((GLfloat)(s+1) / (numSamples+1) -0.5);
 
-      sample_2d_linear(ctx, tObj, img, newCoord, rgba);
+      sample_2d_linear(ctx, samp, img, newCoord, rgba);
       num[0] += rgba[0];
       num[1] += rgba[1];
       num[2] += rgba[2];
@@ -1799,6 +1821,7 @@ texture_unit_index(const struct gl_context *ctx,
  */
 static void
 sample_lambda_2d_aniso(struct gl_context *ctx,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_object *tObj,
                        GLuint n, const GLfloat texcoords[][4],
                        const GLfloat lambda_iso[], GLfloat rgba[][4])
@@ -1806,7 +1829,7 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
    const struct gl_texture_image *tImg = tObj->Image[0][tObj->BaseLevel];
    const struct swrast_texture_image *swImg = swrast_texture_image_const(tImg);
    const GLfloat maxEccentricity =
-      tObj->Sampler.MaxAnisotropy * tObj->Sampler.MaxAnisotropy;
+      samp->MaxAnisotropy * samp->MaxAnisotropy;
    
    /* re-calculate the lambda values so that they are usable with anisotropic
     * filtering
@@ -1837,8 +1860,8 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
    /* from swrast/s_texcombine.c _swrast_texture_span */
    const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[u];
    const GLboolean adjustLOD =
-      (texUnit->LodBias + tObj->Sampler.LodBias != 0.0F)
-      || (tObj->Sampler.MinLod != -1000.0 || tObj->Sampler.MaxLod != 1000.0);
+      (texUnit->LodBias + samp->LodBias != 0.0F)
+      || (samp->MinLod != -1000.0 || samp->MaxLod != 1000.0);
 
    GLuint i;
    
@@ -1901,18 +1924,18 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
       
       if (adjustLOD) {
          /* from swrast/s_texcombine.c _swrast_texture_span */
-         if (texUnit->LodBias + tObj->Sampler.LodBias != 0.0F) {
+         if (texUnit->LodBias + samp->LodBias != 0.0F) {
             /* apply LOD bias, but don't clamp yet */
             const GLfloat bias =
-               CLAMP(texUnit->LodBias + tObj->Sampler.LodBias,
+               CLAMP(texUnit->LodBias + samp->LodBias,
                      -ctx->Const.MaxTextureLodBias,
                      ctx->Const.MaxTextureLodBias);
             lod += bias;
 
-            if (tObj->Sampler.MinLod != -1000.0 ||
-                tObj->Sampler.MaxLod != 1000.0) {
+            if (samp->MinLod != -1000.0 ||
+                samp->MaxLod != 1000.0) {
                /* apply LOD clamping to lambda */
-               lod = CLAMP(lod, tObj->Sampler.MinLod, tObj->Sampler.MaxLod);
+               lod = CLAMP(lod, samp->MinLod, samp->MaxLod);
             }
          }
       }
@@ -1921,14 +1944,14 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
        * simply return the average of the whole image.
        */
       if (lod >= tObj->_MaxLevel) {
-         sample_2d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoords[i], rgba[i]);
       }
       else {
          /* don't bother interpolating between multiple LODs; it doesn't
           * seem to be worth the extra running time.
           */
-         sample_2d_ewa(ctx, tObj, texcoords[i],
+         sample_2d_ewa(ctx, samp, tObj, texcoords[i],
                        dudx, dvdx, dudy, dvdy, floor(lod), rgba[i]);
 
          /* unused: */
@@ -1952,7 +1975,7 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
  */
 static inline void
 sample_3d_nearest(struct gl_context *ctx,
-                  const struct gl_texture_object *tObj,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_image *img,
                   const GLfloat texcoord[4],
                   GLfloat rgba[4])
@@ -1964,15 +1987,15 @@ sample_3d_nearest(struct gl_context *ctx,
    GLint i, j, k;
    (void) ctx;
 
-   i = nearest_texel_location(tObj->Sampler.WrapS, img, width, texcoord[0]);
-   j = nearest_texel_location(tObj->Sampler.WrapT, img, height, texcoord[1]);
-   k = nearest_texel_location(tObj->Sampler.WrapR, img, depth, texcoord[2]);
+   i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
+   j = nearest_texel_location(samp->WrapT, img, height, texcoord[1]);
+   k = nearest_texel_location(samp->WrapR, img, depth, texcoord[2]);
 
    if (i < 0 || i >= (GLint) img->Width ||
        j < 0 || j >= (GLint) img->Height ||
        k < 0 || k >= (GLint) img->Depth) {
       /* Need this test for GL_CLAMP_TO_BORDER mode */
-      get_border_color(tObj, img, rgba);
+      get_border_color(samp, img, rgba);
    }
    else {
       swImg->FetchTexel(swImg, i, j, k, rgba);
@@ -1985,7 +2008,7 @@ sample_3d_nearest(struct gl_context *ctx,
  */
 static void
 sample_3d_linear(struct gl_context *ctx,
-                 const struct gl_texture_object *tObj,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_image *img,
                  const GLfloat texcoord[4],
                  GLfloat rgba[4])
@@ -2000,9 +2023,9 @@ sample_3d_linear(struct gl_context *ctx,
    GLfloat t000[4], t010[4], t001[4], t011[4];
    GLfloat t100[4], t110[4], t101[4], t111[4];
 
-   linear_texel_locations(tObj->Sampler.WrapS, img, width, texcoord[0],  &i0, &i1, &a);
-   linear_texel_locations(tObj->Sampler.WrapT, img, height, texcoord[1], &j0, &j1, &b);
-   linear_texel_locations(tObj->Sampler.WrapR, img, depth, texcoord[2],  &k0, &k1, &c);
+   linear_texel_locations(samp->WrapS, img, width, texcoord[0],  &i0, &i1, &a);
+   linear_texel_locations(samp->WrapT, img, height, texcoord[1], &j0, &j1, &b);
+   linear_texel_locations(samp->WrapR, img, depth, texcoord[2],  &k0, &k1, &c);
 
    if (img->Border) {
       i0 += img->Border;
@@ -2024,50 +2047,50 @@ sample_3d_linear(struct gl_context *ctx,
 
    /* Fetch texels */
    if (useBorderColor & (I0BIT | J0BIT | K0BIT)) {
-      get_border_color(tObj, img, t000);
+      get_border_color(samp, img, t000);
    }
    else {
       swImg->FetchTexel(swImg, i0, j0, k0, t000);
    }
    if (useBorderColor & (I1BIT | J0BIT | K0BIT)) {
-      get_border_color(tObj, img, t100);
+      get_border_color(samp, img, t100);
    }
    else {
       swImg->FetchTexel(swImg, i1, j0, k0, t100);
    }
    if (useBorderColor & (I0BIT | J1BIT | K0BIT)) {
-      get_border_color(tObj, img, t010);
+      get_border_color(samp, img, t010);
    }
    else {
       swImg->FetchTexel(swImg, i0, j1, k0, t010);
    }
    if (useBorderColor & (I1BIT | J1BIT | K0BIT)) {
-      get_border_color(tObj, img, t110);
+      get_border_color(samp, img, t110);
    }
    else {
       swImg->FetchTexel(swImg, i1, j1, k0, t110);
    }
 
    if (useBorderColor & (I0BIT | J0BIT | K1BIT)) {
-      get_border_color(tObj, img, t001);
+      get_border_color(samp, img, t001);
    }
    else {
       swImg->FetchTexel(swImg, i0, j0, k1, t001);
    }
    if (useBorderColor & (I1BIT | J0BIT | K1BIT)) {
-      get_border_color(tObj, img, t101);
+      get_border_color(samp, img, t101);
    }
    else {
       swImg->FetchTexel(swImg, i1, j0, k1, t101);
    }
    if (useBorderColor & (I0BIT | J1BIT | K1BIT)) {
-      get_border_color(tObj, img, t011);
+      get_border_color(samp, img, t011);
    }
    else {
       swImg->FetchTexel(swImg, i0, j1, k1, t011);
    }
    if (useBorderColor & (I1BIT | J1BIT | K1BIT)) {
-      get_border_color(tObj, img, t111);
+      get_border_color(samp, img, t111);
    }
    else {
       swImg->FetchTexel(swImg, i1, j1, k1, t111);
@@ -2080,6 +2103,7 @@ sample_3d_linear(struct gl_context *ctx,
 
 static void
 sample_3d_nearest_mipmap_nearest(struct gl_context *ctx,
+                                 const struct gl_sampler_object *samp,
                                  const struct gl_texture_object *tObj,
                                  GLuint n, const GLfloat texcoord[][4],
                                  const GLfloat lambda[], GLfloat rgba[][4] )
@@ -2087,13 +2111,14 @@ sample_3d_nearest_mipmap_nearest(struct gl_context *ctx,
    GLuint i;
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_3d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_3d_nearest(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_3d_linear_mipmap_nearest(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -2102,13 +2127,14 @@ sample_3d_linear_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_3d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
+      sample_3d_linear(ctx, samp, tObj->Image[0][level], texcoord[i], rgba[i]);
    }
 }
 
 
 static void
 sample_3d_nearest_mipmap_linear(struct gl_context *ctx,
+                                const struct gl_sampler_object *samp,
                                 const struct gl_texture_object *tObj,
                                 GLuint n, const GLfloat texcoord[][4],
                                 const GLfloat lambda[], GLfloat rgba[][4])
@@ -2118,14 +2144,14 @@ sample_3d_nearest_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_3d_nearest(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                            texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_3d_nearest(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_3d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_3d_nearest(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_3d_nearest(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -2134,6 +2160,7 @@ sample_3d_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_3d_linear_mipmap_linear(struct gl_context *ctx,
+                               const struct gl_sampler_object *samp,
                                const struct gl_texture_object *tObj,
                                GLuint n, const GLfloat texcoord[][4],
                                const GLfloat lambda[], GLfloat rgba[][4])
@@ -2143,14 +2170,14 @@ sample_3d_linear_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_3d_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_3d_linear(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_3d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_3d_linear(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_3d_linear(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -2160,6 +2187,7 @@ sample_3d_linear_mipmap_linear(struct gl_context *ctx,
 /** Sample 3D texture, nearest filtering for both min/magnification */
 static void
 sample_nearest_3d(struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
                   const struct gl_texture_object *tObj, GLuint n,
                   const GLfloat texcoords[][4], const GLfloat lambda[],
                   GLfloat rgba[][4])
@@ -2168,7 +2196,7 @@ sample_nearest_3d(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_3d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_3d_nearest(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -2176,6 +2204,7 @@ sample_nearest_3d(struct gl_context *ctx,
 /** Sample 3D texture, linear filtering for both min/magnification */
 static void
 sample_linear_3d(struct gl_context *ctx,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_object *tObj, GLuint n,
                  const GLfloat texcoords[][4],
 		 const GLfloat lambda[], GLfloat rgba[][4])
@@ -2184,7 +2213,7 @@ sample_linear_3d(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_3d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_3d_linear(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -2192,6 +2221,7 @@ sample_linear_3d(struct gl_context *ctx,
 /** Sample 3D texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_3d(struct gl_context *ctx,
+                 const struct gl_sampler_object *samp,
                  const struct gl_texture_object *tObj, GLuint n,
                  const GLfloat texcoords[][4], const GLfloat lambda[],
                  GLfloat rgba[][4])
@@ -2201,37 +2231,37 @@ sample_lambda_3d(struct gl_context *ctx,
    GLuint i;
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
          for (i = minStart; i < minEnd; i++)
-            sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_3d_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = minStart; i < minEnd; i++)
-            sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_3d_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                              texcoords[i], rgba[i]);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_3d_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_3d_nearest_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                           lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_3d_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_3d_linear_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_3d_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_3d_nearest_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                          lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
-         sample_3d_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_3d_linear_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                         lambda + minStart, rgba + minStart);
          break;
       default:
@@ -2242,15 +2272,15 @@ sample_lambda_3d(struct gl_context *ctx,
 
    if (magStart < magEnd) {
       /* do the magnified texels */
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
          for (i = magStart; i < magEnd; i++)
-            sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_3d_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = magStart; i < magEnd; i++)
-            sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_3d_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                              texcoords[i], rgba[i]);
          break;
       default:
@@ -2347,6 +2377,7 @@ choose_cube_face(const struct gl_texture_object *texObj,
 
 static void
 sample_nearest_cube(struct gl_context *ctx,
+                    const struct gl_sampler_object *samp,
 		    const struct gl_texture_object *tObj, GLuint n,
                     const GLfloat texcoords[][4], const GLfloat lambda[],
                     GLfloat rgba[][4])
@@ -2357,7 +2388,7 @@ sample_nearest_cube(struct gl_context *ctx,
       const struct gl_texture_image **images;
       GLfloat newCoord[4];
       images = choose_cube_face(tObj, texcoords[i], newCoord);
-      sample_2d_nearest(ctx, tObj, images[tObj->BaseLevel],
+      sample_2d_nearest(ctx, samp, images[tObj->BaseLevel],
                         newCoord, rgba[i]);
    }
 }
@@ -2365,6 +2396,7 @@ sample_nearest_cube(struct gl_context *ctx,
 
 static void
 sample_linear_cube(struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
 		   const struct gl_texture_object *tObj, GLuint n,
                    const GLfloat texcoords[][4],
 		   const GLfloat lambda[], GLfloat rgba[][4])
@@ -2375,7 +2407,7 @@ sample_linear_cube(struct gl_context *ctx,
       const struct gl_texture_image **images;
       GLfloat newCoord[4];
       images = choose_cube_face(tObj, texcoords[i], newCoord);
-      sample_2d_linear(ctx, tObj, images[tObj->BaseLevel],
+      sample_2d_linear(ctx, samp, images[tObj->BaseLevel],
                        newCoord, rgba[i]);
    }
 }
@@ -2383,6 +2415,7 @@ sample_linear_cube(struct gl_context *ctx,
 
 static void
 sample_cube_nearest_mipmap_nearest(struct gl_context *ctx,
+                                   const struct gl_sampler_object *samp,
                                    const struct gl_texture_object *tObj,
                                    GLuint n, const GLfloat texcoord[][4],
                                    const GLfloat lambda[], GLfloat rgba[][4])
@@ -2405,13 +2438,14 @@ sample_cube_nearest_mipmap_nearest(struct gl_context *ctx,
       level = nearest_mipmap_level(tObj, lambda[i]);
       level = MAX2(level - 1, 0);
 
-      sample_2d_nearest(ctx, tObj, images[level], newCoord, rgba[i]);
+      sample_2d_nearest(ctx, samp, images[level], newCoord, rgba[i]);
    }
 }
 
 
 static void
 sample_cube_linear_mipmap_nearest(struct gl_context *ctx,
+                                  const struct gl_sampler_object *samp,
                                   const struct gl_texture_object *tObj,
                                   GLuint n, const GLfloat texcoord[][4],
                                   const GLfloat lambda[], GLfloat rgba[][4])
@@ -2424,13 +2458,14 @@ sample_cube_linear_mipmap_nearest(struct gl_context *ctx,
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
       level = MAX2(level - 1, 0); /* see comment above */
       images = choose_cube_face(tObj, texcoord[i], newCoord);
-      sample_2d_linear(ctx, tObj, images[level], newCoord, rgba[i]);
+      sample_2d_linear(ctx, samp, images[level], newCoord, rgba[i]);
    }
 }
 
 
 static void
 sample_cube_nearest_mipmap_linear(struct gl_context *ctx,
+                                  const struct gl_sampler_object *samp,
                                   const struct gl_texture_object *tObj,
                                   GLuint n, const GLfloat texcoord[][4],
                                   const GLfloat lambda[], GLfloat rgba[][4])
@@ -2444,14 +2479,14 @@ sample_cube_nearest_mipmap_linear(struct gl_context *ctx,
       level = MAX2(level - 1, 0); /* see comment above */
       images = choose_cube_face(tObj, texcoord[i], newCoord);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_nearest(ctx, tObj, images[tObj->_MaxLevel],
+         sample_2d_nearest(ctx, samp, images[tObj->_MaxLevel],
                            newCoord, rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_nearest(ctx, tObj, images[level  ], newCoord, t0);
-         sample_2d_nearest(ctx, tObj, images[level+1], newCoord, t1);
+         sample_2d_nearest(ctx, samp, images[level  ], newCoord, t0);
+         sample_2d_nearest(ctx, samp, images[level+1], newCoord, t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -2460,6 +2495,7 @@ sample_cube_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_cube_linear_mipmap_linear(struct gl_context *ctx,
+                                 const struct gl_sampler_object *samp,
                                  const struct gl_texture_object *tObj,
                                  GLuint n, const GLfloat texcoord[][4],
                                  const GLfloat lambda[], GLfloat rgba[][4])
@@ -2473,14 +2509,14 @@ sample_cube_linear_mipmap_linear(struct gl_context *ctx,
       level = MAX2(level - 1, 0); /* see comment above */
       images = choose_cube_face(tObj, texcoord[i], newCoord);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_linear(ctx, tObj, images[tObj->_MaxLevel],
+         sample_2d_linear(ctx, samp, images[tObj->_MaxLevel],
                           newCoord, rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_linear(ctx, tObj, images[level  ], newCoord, t0);
-         sample_2d_linear(ctx, tObj, images[level+1], newCoord, t1);
+         sample_2d_linear(ctx, samp, images[level  ], newCoord, t0);
+         sample_2d_linear(ctx, samp, images[level+1], newCoord, t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -2490,6 +2526,7 @@ sample_cube_linear_mipmap_linear(struct gl_context *ctx,
 /** Sample cube texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_cube(struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
 		   const struct gl_texture_object *tObj, GLuint n,
 		   const GLfloat texcoords[][4], const GLfloat lambda[],
 		   GLfloat rgba[][4])
@@ -2498,38 +2535,38 @@ sample_lambda_cube(struct gl_context *ctx,
    GLuint magStart, magEnd;  /* texels with magnification */
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       const GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
-         sample_nearest_cube(ctx, tObj, m, texcoords + minStart,
+         sample_nearest_cube(ctx, samp, tObj, m, texcoords + minStart,
                              lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR:
-         sample_linear_cube(ctx, tObj, m, texcoords + minStart,
+         sample_linear_cube(ctx, samp, tObj, m, texcoords + minStart,
                             lambda + minStart, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_cube_nearest_mipmap_nearest(ctx, tObj, m,
+         sample_cube_nearest_mipmap_nearest(ctx, samp, tObj, m,
                                             texcoords + minStart,
                                            lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_cube_linear_mipmap_nearest(ctx, tObj, m,
+         sample_cube_linear_mipmap_nearest(ctx, samp, tObj, m,
                                            texcoords + minStart,
                                            lambda + minStart, rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_cube_nearest_mipmap_linear(ctx, tObj, m,
+         sample_cube_nearest_mipmap_linear(ctx, samp, tObj, m,
                                            texcoords + minStart,
                                            lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
-         sample_cube_linear_mipmap_linear(ctx, tObj, m,
+         sample_cube_linear_mipmap_linear(ctx, samp, tObj, m,
                                           texcoords + minStart,
                                           lambda + minStart, rgba + minStart);
          break;
@@ -2542,13 +2579,13 @@ sample_lambda_cube(struct gl_context *ctx,
    if (magStart < magEnd) {
       /* do the magnified texels */
       const GLuint m = magEnd - magStart;
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
-         sample_nearest_cube(ctx, tObj, m, texcoords + magStart,
+         sample_nearest_cube(ctx, samp, tObj, m, texcoords + magStart,
                              lambda + magStart, rgba + magStart);
          break;
       case GL_LINEAR:
-         sample_linear_cube(ctx, tObj, m, texcoords + magStart,
+         sample_linear_cube(ctx, samp, tObj, m, texcoords + magStart,
                             lambda + magStart, rgba + magStart);
          break;
       default:
@@ -2566,6 +2603,7 @@ sample_lambda_cube(struct gl_context *ctx,
 
 static void
 sample_nearest_rect(struct gl_context *ctx,
+                    const struct gl_sampler_object *samp,
 		    const struct gl_texture_object *tObj, GLuint n,
                     const GLfloat texcoords[][4], const GLfloat lambda[],
                     GLfloat rgba[][4])
@@ -2579,19 +2617,19 @@ sample_nearest_rect(struct gl_context *ctx,
    (void) ctx;
    (void) lambda;
 
-   ASSERT(tObj->Sampler.WrapS == GL_CLAMP ||
-          tObj->Sampler.WrapS == GL_CLAMP_TO_EDGE ||
-          tObj->Sampler.WrapS == GL_CLAMP_TO_BORDER);
-   ASSERT(tObj->Sampler.WrapT == GL_CLAMP ||
-          tObj->Sampler.WrapT == GL_CLAMP_TO_EDGE ||
-          tObj->Sampler.WrapT == GL_CLAMP_TO_BORDER);
+   ASSERT(samp->WrapS == GL_CLAMP ||
+          samp->WrapS == GL_CLAMP_TO_EDGE ||
+          samp->WrapS == GL_CLAMP_TO_BORDER);
+   ASSERT(samp->WrapT == GL_CLAMP ||
+          samp->WrapT == GL_CLAMP_TO_EDGE ||
+          samp->WrapT == GL_CLAMP_TO_BORDER);
 
    for (i = 0; i < n; i++) {
       GLint row, col;
-      col = clamp_rect_coord_nearest(tObj->Sampler.WrapS, texcoords[i][0], width);
-      row = clamp_rect_coord_nearest(tObj->Sampler.WrapT, texcoords[i][1], height);
+      col = clamp_rect_coord_nearest(samp->WrapS, texcoords[i][0], width);
+      row = clamp_rect_coord_nearest(samp->WrapT, texcoords[i][1], height);
       if (col < 0 || col >= width || row < 0 || row >= height)
-         get_border_color(tObj, img, rgba[i]);
+         get_border_color(samp, img, rgba[i]);
       else
          swImg->FetchTexel(swImg, col, row, 0, rgba[i]);
    }
@@ -2600,6 +2638,7 @@ sample_nearest_rect(struct gl_context *ctx,
 
 static void
 sample_linear_rect(struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
 		   const struct gl_texture_object *tObj, GLuint n,
                    const GLfloat texcoords[][4],
 		   const GLfloat lambda[], GLfloat rgba[][4])
@@ -2613,12 +2652,12 @@ sample_linear_rect(struct gl_context *ctx,
    (void) ctx;
    (void) lambda;
 
-   ASSERT(tObj->Sampler.WrapS == GL_CLAMP ||
-          tObj->Sampler.WrapS == GL_CLAMP_TO_EDGE ||
-          tObj->Sampler.WrapS == GL_CLAMP_TO_BORDER);
-   ASSERT(tObj->Sampler.WrapT == GL_CLAMP ||
-          tObj->Sampler.WrapT == GL_CLAMP_TO_EDGE ||
-          tObj->Sampler.WrapT == GL_CLAMP_TO_BORDER);
+   ASSERT(samp->WrapS == GL_CLAMP ||
+          samp->WrapS == GL_CLAMP_TO_EDGE ||
+          samp->WrapS == GL_CLAMP_TO_BORDER);
+   ASSERT(samp->WrapT == GL_CLAMP ||
+          samp->WrapT == GL_CLAMP_TO_EDGE ||
+          samp->WrapT == GL_CLAMP_TO_BORDER);
 
    for (i = 0; i < n; i++) {
       GLint i0, j0, i1, j1;
@@ -2626,9 +2665,9 @@ sample_linear_rect(struct gl_context *ctx,
       GLfloat a, b;
       GLbitfield useBorderColor = 0x0;
 
-      clamp_rect_coord_linear(tObj->Sampler.WrapS, texcoords[i][0], width,
+      clamp_rect_coord_linear(samp->WrapS, texcoords[i][0], width,
                               &i0, &i1, &a);
-      clamp_rect_coord_linear(tObj->Sampler.WrapT, texcoords[i][1], height,
+      clamp_rect_coord_linear(samp->WrapT, texcoords[i][1], height,
                               &j0, &j1, &b);
 
       /* compute integer rows/columns */
@@ -2639,22 +2678,22 @@ sample_linear_rect(struct gl_context *ctx,
 
       /* get four texel samples */
       if (useBorderColor & (I0BIT | J0BIT))
-         get_border_color(tObj, img, t00);
+         get_border_color(samp, img, t00);
       else
          swImg->FetchTexel(swImg, i0, j0, 0, t00);
 
       if (useBorderColor & (I1BIT | J0BIT))
-         get_border_color(tObj, img, t10);
+         get_border_color(samp, img, t10);
       else
          swImg->FetchTexel(swImg, i1, j0, 0, t10);
 
       if (useBorderColor & (I0BIT | J1BIT))
-         get_border_color(tObj, img, t01);
+         get_border_color(samp, img, t01);
       else
          swImg->FetchTexel(swImg, i0, j1, 0, t01);
 
       if (useBorderColor & (I1BIT | J1BIT))
-         get_border_color(tObj, img, t11);
+         get_border_color(samp, img, t11);
       else
          swImg->FetchTexel(swImg, i1, j1, 0, t11);
 
@@ -2666,6 +2705,7 @@ sample_linear_rect(struct gl_context *ctx,
 /** Sample Rect texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_rect(struct gl_context *ctx,
+                   const struct gl_sampler_object *samp,
 		   const struct gl_texture_object *tObj, GLuint n,
 		   const GLfloat texcoords[][4], const GLfloat lambda[],
 		   GLfloat rgba[][4])
@@ -2675,26 +2715,26 @@ sample_lambda_rect(struct gl_context *ctx,
    /* We only need lambda to decide between minification and magnification.
     * There is no mipmapping with rectangular textures.
     */
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
-      if (tObj->Sampler.MinFilter == GL_NEAREST) {
-         sample_nearest_rect(ctx, tObj, minEnd - minStart,
+      if (samp->MinFilter == GL_NEAREST) {
+         sample_nearest_rect(ctx, samp, tObj, minEnd - minStart,
                              texcoords + minStart, NULL, rgba + minStart);
       }
       else {
-         sample_linear_rect(ctx, tObj, minEnd - minStart,
+         sample_linear_rect(ctx, samp, tObj, minEnd - minStart,
                             texcoords + minStart, NULL, rgba + minStart);
       }
    }
    if (magStart < magEnd) {
-      if (tObj->Sampler.MagFilter == GL_NEAREST) {
-         sample_nearest_rect(ctx, tObj, magEnd - magStart,
+      if (samp->MagFilter == GL_NEAREST) {
+         sample_nearest_rect(ctx, samp, tObj, magEnd - magStart,
                              texcoords + magStart, NULL, rgba + magStart);
       }
       else {
-         sample_linear_rect(ctx, tObj, magEnd - magStart,
+         sample_linear_rect(ctx, samp, tObj, magEnd - magStart,
                             texcoords + magStart, NULL, rgba + magStart);
       }
    }
@@ -2710,7 +2750,7 @@ sample_lambda_rect(struct gl_context *ctx,
  */
 static void
 sample_2d_array_nearest(struct gl_context *ctx,
-                        const struct gl_texture_object *tObj,
+                        const struct gl_sampler_object *samp,
                         const struct gl_texture_image *img,
                         const GLfloat texcoord[4],
                         GLfloat rgba[4])
@@ -2723,15 +2763,15 @@ sample_2d_array_nearest(struct gl_context *ctx,
    GLint array;
    (void) ctx;
 
-   i = nearest_texel_location(tObj->Sampler.WrapS, img, width, texcoord[0]);
-   j = nearest_texel_location(tObj->Sampler.WrapT, img, height, texcoord[1]);
+   i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
+   j = nearest_texel_location(samp->WrapT, img, height, texcoord[1]);
    array = tex_array_slice(texcoord[2], depth);
 
    if (i < 0 || i >= (GLint) img->Width ||
        j < 0 || j >= (GLint) img->Height ||
        array < 0 || array >= (GLint) img->Depth) {
       /* Need this test for GL_CLAMP_TO_BORDER mode */
-      get_border_color(tObj, img, rgba);
+      get_border_color(samp, img, rgba);
    }
    else {
       swImg->FetchTexel(swImg, i, j, array, rgba);
@@ -2744,7 +2784,7 @@ sample_2d_array_nearest(struct gl_context *ctx,
  */
 static void
 sample_2d_array_linear(struct gl_context *ctx,
-                       const struct gl_texture_object *tObj,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_image *img,
                        const GLfloat texcoord[4],
                        GLfloat rgba[4])
@@ -2759,12 +2799,12 @@ sample_2d_array_linear(struct gl_context *ctx,
    GLfloat a, b;
    GLfloat t00[4], t01[4], t10[4], t11[4];
 
-   linear_texel_locations(tObj->Sampler.WrapS, img, width,  texcoord[0], &i0, &i1, &a);
-   linear_texel_locations(tObj->Sampler.WrapT, img, height, texcoord[1], &j0, &j1, &b);
+   linear_texel_locations(samp->WrapS, img, width,  texcoord[0], &i0, &i1, &a);
+   linear_texel_locations(samp->WrapT, img, height, texcoord[1], &j0, &j1, &b);
    array = tex_array_slice(texcoord[2], depth);
 
    if (array < 0 || array >= depth) {
-      COPY_4V(rgba, tObj->Sampler.BorderColor.f);
+      COPY_4V(rgba, samp->BorderColor.f);
    }
    else {
       if (img->Border) {
@@ -2783,25 +2823,25 @@ sample_2d_array_linear(struct gl_context *ctx,
 
       /* Fetch texels */
       if (useBorderColor & (I0BIT | J0BIT)) {
-         get_border_color(tObj, img, t00);
+         get_border_color(samp, img, t00);
       }
       else {
 	 swImg->FetchTexel(swImg, i0, j0, array, t00);
       }
       if (useBorderColor & (I1BIT | J0BIT)) {
-         get_border_color(tObj, img, t10);
+         get_border_color(samp, img, t10);
       }
       else {
 	 swImg->FetchTexel(swImg, i1, j0, array, t10);
       }
       if (useBorderColor & (I0BIT | J1BIT)) {
-         get_border_color(tObj, img, t01);
+         get_border_color(samp, img, t01);
       }
       else {
 	 swImg->FetchTexel(swImg, i0, j1, array, t01);
       }
       if (useBorderColor & (I1BIT | J1BIT)) {
-         get_border_color(tObj, img, t11);
+         get_border_color(samp, img, t11);
       }
       else {
 	 swImg->FetchTexel(swImg, i1, j1, array, t11);
@@ -2815,6 +2855,7 @@ sample_2d_array_linear(struct gl_context *ctx,
 
 static void
 sample_2d_array_nearest_mipmap_nearest(struct gl_context *ctx,
+                                       const struct gl_sampler_object *samp,
                                        const struct gl_texture_object *tObj,
                                        GLuint n, const GLfloat texcoord[][4],
                                        const GLfloat lambda[], GLfloat rgba[][4])
@@ -2822,7 +2863,7 @@ sample_2d_array_nearest_mipmap_nearest(struct gl_context *ctx,
    GLuint i;
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i],
+      sample_2d_array_nearest(ctx, samp, tObj->Image[0][level], texcoord[i],
                               rgba[i]);
    }
 }
@@ -2830,6 +2871,7 @@ sample_2d_array_nearest_mipmap_nearest(struct gl_context *ctx,
 
 static void
 sample_2d_array_linear_mipmap_nearest(struct gl_context *ctx,
+                                      const struct gl_sampler_object *samp,
                                       const struct gl_texture_object *tObj,
                                       GLuint n, const GLfloat texcoord[][4],
                                       const GLfloat lambda[], GLfloat rgba[][4])
@@ -2838,7 +2880,7 @@ sample_2d_array_linear_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_2d_array_linear(ctx, tObj, tObj->Image[0][level],
+      sample_2d_array_linear(ctx, samp, tObj->Image[0][level],
                              texcoord[i], rgba[i]);
    }
 }
@@ -2846,6 +2888,7 @@ sample_2d_array_linear_mipmap_nearest(struct gl_context *ctx,
 
 static void
 sample_2d_array_nearest_mipmap_linear(struct gl_context *ctx,
+                                      const struct gl_sampler_object *samp,
                                       const struct gl_texture_object *tObj,
                                       GLuint n, const GLfloat texcoord[][4],
                                       const GLfloat lambda[], GLfloat rgba[][4])
@@ -2855,15 +2898,15 @@ sample_2d_array_nearest_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_array_nearest(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                                  texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level  ],
+         sample_2d_array_nearest(ctx, samp, tObj->Image[0][level  ],
                                  texcoord[i], t0);
-         sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level+1],
+         sample_2d_array_nearest(ctx, samp, tObj->Image[0][level+1],
                                  texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
@@ -2873,6 +2916,7 @@ sample_2d_array_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_2d_array_linear_mipmap_linear(struct gl_context *ctx,
+                                     const struct gl_sampler_object *samp,
                                      const struct gl_texture_object *tObj,
                                      GLuint n, const GLfloat texcoord[][4],
                                      const GLfloat lambda[], GLfloat rgba[][4])
@@ -2882,15 +2926,15 @@ sample_2d_array_linear_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_2d_array_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_2d_array_linear(ctx, tObj, tObj->Image[0][level  ],
+         sample_2d_array_linear(ctx, samp, tObj->Image[0][level  ],
                                 texcoord[i], t0);
-         sample_2d_array_linear(ctx, tObj, tObj->Image[0][level+1],
+         sample_2d_array_linear(ctx, samp, tObj->Image[0][level+1],
                                 texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
@@ -2901,6 +2945,7 @@ sample_2d_array_linear_mipmap_linear(struct gl_context *ctx,
 /** Sample 2D Array texture, nearest filtering for both min/magnification */
 static void
 sample_nearest_2d_array(struct gl_context *ctx,
+                        const struct gl_sampler_object *samp,
                         const struct gl_texture_object *tObj, GLuint n,
                         const GLfloat texcoords[][4], const GLfloat lambda[],
                         GLfloat rgba[][4])
@@ -2909,7 +2954,7 @@ sample_nearest_2d_array(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_2d_array_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_2d_array_nearest(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -2918,6 +2963,7 @@ sample_nearest_2d_array(struct gl_context *ctx,
 /** Sample 2D Array texture, linear filtering for both min/magnification */
 static void
 sample_linear_2d_array(struct gl_context *ctx,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_object *tObj, GLuint n,
                        const GLfloat texcoords[][4],
                        const GLfloat lambda[], GLfloat rgba[][4])
@@ -2926,7 +2972,7 @@ sample_linear_2d_array(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_2d_array_linear(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_2d_array_linear(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -2934,6 +2980,7 @@ sample_linear_2d_array(struct gl_context *ctx,
 /** Sample 2D Array texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_2d_array(struct gl_context *ctx,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_object *tObj, GLuint n,
                        const GLfloat texcoords[][4], const GLfloat lambda[],
                        GLfloat rgba[][4])
@@ -2943,43 +2990,43 @@ sample_lambda_2d_array(struct gl_context *ctx,
    GLuint i;
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
          for (i = minStart; i < minEnd; i++)
-            sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_2d_array_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                     texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = minStart; i < minEnd; i++)
-            sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_2d_array_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                    texcoords[i], rgba[i]);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_2d_array_nearest_mipmap_nearest(ctx, tObj, m,
+         sample_2d_array_nearest_mipmap_nearest(ctx, samp, tObj, m,
                                                 texcoords + minStart,
                                                 lambda + minStart,
                                                 rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_2d_array_linear_mipmap_nearest(ctx, tObj, m, 
+         sample_2d_array_linear_mipmap_nearest(ctx, samp, tObj, m,
                                                texcoords + minStart,
                                                lambda + minStart,
                                                rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_2d_array_nearest_mipmap_linear(ctx, tObj, m,
+         sample_2d_array_nearest_mipmap_linear(ctx, samp, tObj, m,
                                                texcoords + minStart,
                                                lambda + minStart,
                                                rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
-         sample_2d_array_linear_mipmap_linear(ctx, tObj, m, 
+         sample_2d_array_linear_mipmap_linear(ctx, samp, tObj, m,
                                               texcoords + minStart,
                                               lambda + minStart, 
                                               rgba + minStart);
@@ -2992,15 +3039,15 @@ sample_lambda_2d_array(struct gl_context *ctx,
 
    if (magStart < magEnd) {
       /* do the magnified texels */
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
          for (i = magStart; i < magEnd; i++)
-            sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_2d_array_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = magStart; i < magEnd; i++)
-            sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_2d_array_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                    texcoords[i], rgba[i]);
          break;
       default:
@@ -3022,7 +3069,7 @@ sample_lambda_2d_array(struct gl_context *ctx,
  */
 static void
 sample_1d_array_nearest(struct gl_context *ctx,
-                        const struct gl_texture_object *tObj,
+                        const struct gl_sampler_object *samp,
                         const struct gl_texture_image *img,
                         const GLfloat texcoord[4],
                         GLfloat rgba[4])
@@ -3034,13 +3081,13 @@ sample_1d_array_nearest(struct gl_context *ctx,
    GLint array;
    (void) ctx;
 
-   i = nearest_texel_location(tObj->Sampler.WrapS, img, width, texcoord[0]);
+   i = nearest_texel_location(samp->WrapS, img, width, texcoord[0]);
    array = tex_array_slice(texcoord[1], height);
 
    if (i < 0 || i >= (GLint) img->Width ||
        array < 0 || array >= (GLint) img->Height) {
       /* Need this test for GL_CLAMP_TO_BORDER mode */
-      get_border_color(tObj, img, rgba);
+      get_border_color(samp, img, rgba);
    }
    else {
       swImg->FetchTexel(swImg, i, array, 0, rgba);
@@ -3053,7 +3100,7 @@ sample_1d_array_nearest(struct gl_context *ctx,
  */
 static void
 sample_1d_array_linear(struct gl_context *ctx,
-                       const struct gl_texture_object *tObj,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_image *img,
                        const GLfloat texcoord[4],
                        GLfloat rgba[4])
@@ -3067,7 +3114,7 @@ sample_1d_array_linear(struct gl_context *ctx,
    GLfloat a;
    GLfloat t0[4], t1[4];
 
-   linear_texel_locations(tObj->Sampler.WrapS, img, width, texcoord[0], &i0, &i1, &a);
+   linear_texel_locations(samp->WrapS, img, width, texcoord[0], &i0, &i1, &a);
    array = tex_array_slice(texcoord[1], height);
 
    if (img->Border) {
@@ -3084,13 +3131,13 @@ sample_1d_array_linear(struct gl_context *ctx,
 
    /* Fetch texels */
    if (useBorderColor & (I0BIT | K0BIT)) {
-      get_border_color(tObj, img, t0);
+      get_border_color(samp, img, t0);
    }
    else {
       swImg->FetchTexel(swImg, i0, array, 0, t0);
    }
    if (useBorderColor & (I1BIT | K0BIT)) {
-      get_border_color(tObj, img, t1);
+      get_border_color(samp, img, t1);
    }
    else {
       swImg->FetchTexel(swImg, i1, array, 0, t1);
@@ -3103,6 +3150,7 @@ sample_1d_array_linear(struct gl_context *ctx,
 
 static void
 sample_1d_array_nearest_mipmap_nearest(struct gl_context *ctx,
+                                       const struct gl_sampler_object *samp,
                                        const struct gl_texture_object *tObj,
                                        GLuint n, const GLfloat texcoord[][4],
                                        const GLfloat lambda[], GLfloat rgba[][4])
@@ -3110,7 +3158,7 @@ sample_1d_array_nearest_mipmap_nearest(struct gl_context *ctx,
    GLuint i;
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i],
+      sample_1d_array_nearest(ctx, samp, tObj->Image[0][level], texcoord[i],
                               rgba[i]);
    }
 }
@@ -3118,6 +3166,7 @@ sample_1d_array_nearest_mipmap_nearest(struct gl_context *ctx,
 
 static void
 sample_1d_array_linear_mipmap_nearest(struct gl_context *ctx,
+                                      const struct gl_sampler_object *samp,
                                       const struct gl_texture_object *tObj,
                                       GLuint n, const GLfloat texcoord[][4],
                                       const GLfloat lambda[], GLfloat rgba[][4])
@@ -3126,7 +3175,7 @@ sample_1d_array_linear_mipmap_nearest(struct gl_context *ctx,
    ASSERT(lambda != NULL);
    for (i = 0; i < n; i++) {
       GLint level = nearest_mipmap_level(tObj, lambda[i]);
-      sample_1d_array_linear(ctx, tObj, tObj->Image[0][level],
+      sample_1d_array_linear(ctx, samp, tObj->Image[0][level],
                              texcoord[i], rgba[i]);
    }
 }
@@ -3134,6 +3183,7 @@ sample_1d_array_linear_mipmap_nearest(struct gl_context *ctx,
 
 static void
 sample_1d_array_nearest_mipmap_linear(struct gl_context *ctx,
+                                      const struct gl_sampler_object *samp,
                                       const struct gl_texture_object *tObj,
                                       GLuint n, const GLfloat texcoord[][4],
                                       const GLfloat lambda[], GLfloat rgba[][4])
@@ -3143,14 +3193,14 @@ sample_1d_array_nearest_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_1d_array_nearest(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                                  texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_1d_array_nearest(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_1d_array_nearest(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -3159,6 +3209,7 @@ sample_1d_array_nearest_mipmap_linear(struct gl_context *ctx,
 
 static void
 sample_1d_array_linear_mipmap_linear(struct gl_context *ctx,
+                                     const struct gl_sampler_object *samp,
                                      const struct gl_texture_object *tObj,
                                      GLuint n, const GLfloat texcoord[][4],
                                      const GLfloat lambda[], GLfloat rgba[][4])
@@ -3168,14 +3219,14 @@ sample_1d_array_linear_mipmap_linear(struct gl_context *ctx,
    for (i = 0; i < n; i++) {
       GLint level = linear_mipmap_level(tObj, lambda[i]);
       if (level >= tObj->_MaxLevel) {
-         sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
+         sample_1d_array_linear(ctx, samp, tObj->Image[0][tObj->_MaxLevel],
                           texcoord[i], rgba[i]);
       }
       else {
          GLfloat t0[4], t1[4];  /* texels */
          const GLfloat f = FRAC(lambda[i]);
-         sample_1d_array_linear(ctx, tObj, tObj->Image[0][level  ], texcoord[i], t0);
-         sample_1d_array_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+         sample_1d_array_linear(ctx, samp, tObj->Image[0][level  ], texcoord[i], t0);
+         sample_1d_array_linear(ctx, samp, tObj->Image[0][level+1], texcoord[i], t1);
          lerp_rgba(rgba[i], f, t0, t1);
       }
    }
@@ -3185,6 +3236,7 @@ sample_1d_array_linear_mipmap_linear(struct gl_context *ctx,
 /** Sample 1D Array texture, nearest filtering for both min/magnification */
 static void
 sample_nearest_1d_array(struct gl_context *ctx,
+                        const struct gl_sampler_object *samp,
                         const struct gl_texture_object *tObj, GLuint n,
                         const GLfloat texcoords[][4], const GLfloat lambda[],
                         GLfloat rgba[][4])
@@ -3193,7 +3245,7 @@ sample_nearest_1d_array(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_1d_array_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_1d_array_nearest(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -3201,6 +3253,7 @@ sample_nearest_1d_array(struct gl_context *ctx,
 /** Sample 1D Array texture, linear filtering for both min/magnification */
 static void
 sample_linear_1d_array(struct gl_context *ctx,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_object *tObj, GLuint n,
                        const GLfloat texcoords[][4],
                        const GLfloat lambda[], GLfloat rgba[][4])
@@ -3209,7 +3262,7 @@ sample_linear_1d_array(struct gl_context *ctx,
    struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
    (void) lambda;
    for (i = 0; i < n; i++) {
-      sample_1d_array_linear(ctx, tObj, image, texcoords[i], rgba[i]);
+      sample_1d_array_linear(ctx, samp, image, texcoords[i], rgba[i]);
    }
 }
 
@@ -3217,6 +3270,7 @@ sample_linear_1d_array(struct gl_context *ctx,
 /** Sample 1D Array texture, using lambda to choose between min/magnification */
 static void
 sample_lambda_1d_array(struct gl_context *ctx,
+                       const struct gl_sampler_object *samp,
                        const struct gl_texture_object *tObj, GLuint n,
                        const GLfloat texcoords[][4], const GLfloat lambda[],
                        GLfloat rgba[][4])
@@ -3226,39 +3280,39 @@ sample_lambda_1d_array(struct gl_context *ctx,
    GLuint i;
 
    ASSERT(lambda != NULL);
-   compute_min_mag_ranges(tObj, n, lambda,
+   compute_min_mag_ranges(samp, n, lambda,
                           &minStart, &minEnd, &magStart, &magEnd);
 
    if (minStart < minEnd) {
       /* do the minified texels */
       GLuint m = minEnd - minStart;
-      switch (tObj->Sampler.MinFilter) {
+      switch (samp->MinFilter) {
       case GL_NEAREST:
          for (i = minStart; i < minEnd; i++)
-            sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_array_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                     texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = minStart; i < minEnd; i++)
-            sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_array_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                    texcoords[i], rgba[i]);
          break;
       case GL_NEAREST_MIPMAP_NEAREST:
-         sample_1d_array_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+         sample_1d_array_nearest_mipmap_nearest(ctx, samp, tObj, m, texcoords + minStart,
                                                 lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_NEAREST:
-         sample_1d_array_linear_mipmap_nearest(ctx, tObj, m, 
+         sample_1d_array_linear_mipmap_nearest(ctx, samp, tObj, m, 
                                                texcoords + minStart,
                                                lambda + minStart,
                                                rgba + minStart);
          break;
       case GL_NEAREST_MIPMAP_LINEAR:
-         sample_1d_array_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+         sample_1d_array_nearest_mipmap_linear(ctx, samp, tObj, m, texcoords + minStart,
                                                lambda + minStart, rgba + minStart);
          break;
       case GL_LINEAR_MIPMAP_LINEAR:
-         sample_1d_array_linear_mipmap_linear(ctx, tObj, m, 
+         sample_1d_array_linear_mipmap_linear(ctx, samp, tObj, m, 
                                               texcoords + minStart,
                                               lambda + minStart, 
                                               rgba + minStart);
@@ -3271,15 +3325,15 @@ sample_lambda_1d_array(struct gl_context *ctx,
 
    if (magStart < magEnd) {
       /* do the magnified texels */
-      switch (tObj->Sampler.MagFilter) {
+      switch (samp->MagFilter) {
       case GL_NEAREST:
          for (i = magStart; i < magEnd; i++)
-            sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_array_nearest(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                               texcoords[i], rgba[i]);
          break;
       case GL_LINEAR:
          for (i = magStart; i < magEnd; i++)
-            sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
+            sample_1d_array_linear(ctx, samp, tObj->Image[0][tObj->BaseLevel],
                                    texcoords[i], rgba[i]);
          break;
       default:
@@ -3390,17 +3444,18 @@ shadow_compare4(GLenum function, GLfloat coord,
  * Choose the mipmap level to use when sampling from a depth texture.
  */
 static int
-choose_depth_texture_level(const struct gl_texture_object *tObj, GLfloat lambda)
+choose_depth_texture_level(const struct gl_sampler_object *samp,
+                           const struct gl_texture_object *tObj, GLfloat lambda)
 {
    GLint level;
 
-   if (tObj->Sampler.MinFilter == GL_NEAREST || tObj->Sampler.MinFilter == GL_LINEAR) {
+   if (samp->MinFilter == GL_NEAREST || samp->MinFilter == GL_LINEAR) {
       /* no mipmapping - use base level */
       level = tObj->BaseLevel;
    }
    else {
       /* choose mipmap level */
-      lambda = CLAMP(lambda, tObj->Sampler.MinLod, tObj->Sampler.MaxLod);
+      lambda = CLAMP(lambda, samp->MinLod, samp->MaxLod);
       level = (GLint) lambda;
       level = CLAMP(level, tObj->BaseLevel, tObj->_MaxLevel);
    }
@@ -3415,11 +3470,12 @@ choose_depth_texture_level(const struct gl_texture_object *tObj, GLfloat lambda)
  */
 static void
 sample_depth_texture( struct gl_context *ctx,
+                      const struct gl_sampler_object *samp,
                       const struct gl_texture_object *tObj, GLuint n,
                       const GLfloat texcoords[][4], const GLfloat lambda[],
                       GLfloat texel[][4] )
 {
-   const GLint level = choose_depth_texture_level(tObj, lambda[0]);
+   const GLint level = choose_depth_texture_level(samp, tObj, lambda[0]);
    const struct gl_texture_image *img = tObj->Image[0][level];
    const struct swrast_texture_image *swImg = swrast_texture_image_const(img);
    const GLint width = img->Width;
@@ -3441,34 +3497,34 @@ sample_depth_texture( struct gl_context *ctx,
           tObj->Target == GL_TEXTURE_2D_ARRAY_EXT ||
           tObj->Target == GL_TEXTURE_CUBE_MAP);
 
-   ambient = tObj->Sampler.CompareFailValue;
+   ambient = samp->CompareFailValue;
 
-   /* XXXX if tObj->Sampler.MinFilter != tObj->Sampler.MagFilter, we're ignoring lambda */
+   /* XXXX if samp->MinFilter != samp->MagFilter, we're ignoring lambda */
 
-   function = (tObj->Sampler.CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) ?
-      tObj->Sampler.CompareFunc : GL_NONE;
+   function = (samp->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) ?
+      samp->CompareFunc : GL_NONE;
 
-   if (tObj->Sampler.MagFilter == GL_NEAREST) {
+   if (samp->MagFilter == GL_NEAREST) {
       GLuint i;
       for (i = 0; i < n; i++) {
          GLfloat depthSample, depthRef;
          GLint col, row, slice;
 
-         nearest_texcoord(tObj, level, texcoords[i], &col, &row, &slice);
+         nearest_texcoord(samp, tObj, level, texcoords[i], &col, &row, &slice);
 
          if (col >= 0 && row >= 0 && col < width && row < height && 
              slice >= 0 && slice < depth) {
             swImg->FetchTexel(swImg, col, row, slice, &depthSample);
          }
          else {
-            depthSample = tObj->Sampler.BorderColor.f[0];
+            depthSample = samp->BorderColor.f[0];
          }
 
          depthRef = CLAMP(texcoords[i][compare_coord], 0.0F, 1.0F);
 
          result = shadow_compare(function, depthRef, depthSample, ambient);
 
-         switch (tObj->Sampler.DepthMode) {
+         switch (tObj->DepthMode) {
          case GL_LUMINANCE:
             ASSIGN_4V(texel[i], result, result, result, 1.0F);
             break;
@@ -3489,7 +3545,7 @@ sample_depth_texture( struct gl_context *ctx,
    }
    else {
       GLuint i;
-      ASSERT(tObj->Sampler.MagFilter == GL_LINEAR);
+      ASSERT(samp->MagFilter == GL_LINEAR);
       for (i = 0; i < n; i++) {
          GLfloat depth00, depth01, depth10, depth11, depthRef;
          GLint i0, i1, j0, j1;
@@ -3497,7 +3553,7 @@ sample_depth_texture( struct gl_context *ctx,
          GLfloat wi, wj;
          GLuint useBorderTexel;
 
-         linear_texcoord(tObj, level, texcoords[i], &i0, &i1, &j0, &j1, &slice,
+         linear_texcoord(samp, tObj, level, texcoords[i], &i0, &i1, &j0, &j1, &slice,
                          &wi, &wj);
 
          useBorderTexel = 0;
@@ -3517,21 +3573,21 @@ sample_depth_texture( struct gl_context *ctx,
          }
 
          if (slice < 0 || slice >= (GLint) depth) {
-            depth00 = tObj->Sampler.BorderColor.f[0];
-            depth01 = tObj->Sampler.BorderColor.f[0];
-            depth10 = tObj->Sampler.BorderColor.f[0];
-            depth11 = tObj->Sampler.BorderColor.f[0];
+            depth00 = samp->BorderColor.f[0];
+            depth01 = samp->BorderColor.f[0];
+            depth10 = samp->BorderColor.f[0];
+            depth11 = samp->BorderColor.f[0];
          }
          else {
             /* get four depth samples from the texture */
             if (useBorderTexel & (I0BIT | J0BIT)) {
-               depth00 = tObj->Sampler.BorderColor.f[0];
+               depth00 = samp->BorderColor.f[0];
             }
             else {
                swImg->FetchTexel(swImg, i0, j0, slice, &depth00);
             }
             if (useBorderTexel & (I1BIT | J0BIT)) {
-               depth10 = tObj->Sampler.BorderColor.f[0];
+               depth10 = samp->BorderColor.f[0];
             }
             else {
                swImg->FetchTexel(swImg, i1, j0, slice, &depth10);
@@ -3539,13 +3595,13 @@ sample_depth_texture( struct gl_context *ctx,
 
             if (tObj->Target != GL_TEXTURE_1D_ARRAY_EXT) {
                if (useBorderTexel & (I0BIT | J1BIT)) {
-                  depth01 = tObj->Sampler.BorderColor.f[0];
+                  depth01 = samp->BorderColor.f[0];
                }
                else {
                   swImg->FetchTexel(swImg, i0, j1, slice, &depth01);
                }
                if (useBorderTexel & (I1BIT | J1BIT)) {
-                  depth11 = tObj->Sampler.BorderColor.f[0];
+                  depth11 = samp->BorderColor.f[0];
                }
                else {
                   swImg->FetchTexel(swImg, i1, j1, slice, &depth11);
@@ -3563,7 +3619,7 @@ sample_depth_texture( struct gl_context *ctx,
                                   depth00, depth01, depth10, depth11,
                                   ambient, wi, wj);
 
-         switch (tObj->Sampler.DepthMode) {
+         switch (tObj->DepthMode) {
          case GL_LUMINANCE:
             ASSIGN_4V(texel[i], result, result, result, 1.0F);
             break;
@@ -3590,6 +3646,7 @@ sample_depth_texture( struct gl_context *ctx,
  */
 static void
 null_sample_func( struct gl_context *ctx,
+                  const struct gl_sampler_object *samp,
 		  const struct gl_texture_object *tObj, GLuint n,
 		  const GLfloat texcoords[][4], const GLfloat lambda[],
 		  GLfloat rgba[][4])
@@ -3599,6 +3656,7 @@ null_sample_func( struct gl_context *ctx,
    (void) tObj;
    (void) texcoords;
    (void) lambda;
+   (void) samp;
    for (i = 0; i < n; i++) {
       rgba[i][RCOMP] = 0;
       rgba[i][GCOMP] = 0;
@@ -3621,7 +3679,7 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
    }
    else {
       const GLboolean needLambda =
-         (GLboolean) (t->Sampler.MinFilter != t->Sampler.MagFilter);
+         (GLboolean) (sampler->MinFilter != sampler->MagFilter);
       const GLenum format = t->Image[0][t->BaseLevel]->_BaseFormat;
 
       switch (t->Target) {
@@ -3632,11 +3690,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
          else if (needLambda) {
             return &sample_lambda_1d;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_1d;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_1d;
          }
       case GL_TEXTURE_2D:
@@ -3645,13 +3703,13 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
          }
          else if (needLambda) {
             /* Anisotropic filtering extension. Activated only if mipmaps are used */
-            if (t->Sampler.MaxAnisotropy > 1.0 &&
-                t->Sampler.MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
+            if (sampler->MaxAnisotropy > 1.0 &&
+                sampler->MinFilter == GL_LINEAR_MIPMAP_LINEAR) {
                return &sample_lambda_2d_aniso;
             }
             return &sample_lambda_2d;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_2d;
          }
          else {
@@ -3661,10 +3719,10 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
                swrast_texture_image_const(img);
             texture_sample_func func;
 
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             func = &sample_nearest_2d;
-            if (t->Sampler.WrapS == GL_REPEAT &&
-                t->Sampler.WrapT == GL_REPEAT &&
+            if (sampler->WrapS == GL_REPEAT &&
+                sampler->WrapT == GL_REPEAT &&
                 swImg->_IsPowerOfTwo &&
                 img->Border == 0) {
                if (img->TexFormat == MESA_FORMAT_RGB888)
@@ -3679,11 +3737,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
          if (needLambda) {
             return &sample_lambda_3d;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_3d;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_3d;
          }
       case GL_TEXTURE_CUBE_MAP:
@@ -3693,11 +3751,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
 	 else if (needLambda) {
             return &sample_lambda_cube;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_cube;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_cube;
          }
       case GL_TEXTURE_RECTANGLE_NV:
@@ -3707,11 +3765,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
          else if (needLambda) {
             return &sample_lambda_rect;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_rect;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_rect;
          }
       case GL_TEXTURE_1D_ARRAY_EXT:
@@ -3721,11 +3779,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
 	 else if (needLambda) {
             return &sample_lambda_1d_array;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_1d_array;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_1d_array;
          }
       case GL_TEXTURE_2D_ARRAY_EXT:
@@ -3735,11 +3793,11 @@ _swrast_choose_texture_sample_func( struct gl_context *ctx,
 	 else if (needLambda) {
             return &sample_lambda_2d_array;
          }
-         else if (t->Sampler.MinFilter == GL_LINEAR) {
+         else if (sampler->MinFilter == GL_LINEAR) {
             return &sample_linear_2d_array;
          }
          else {
-            ASSERT(t->Sampler.MinFilter == GL_NEAREST);
+            ASSERT(sampler->MinFilter == GL_NEAREST);
             return &sample_nearest_2d_array;
          }
       default:
diff --git a/mesalib/src/mesa/swrast/s_triangle.c b/mesalib/src/mesa/swrast/s_triangle.c
index e89a999a9..893859db0 100644
--- a/mesalib/src/mesa/swrast/s_triangle.c
+++ b/mesalib/src/mesa/swrast/s_triangle.c
@@ -36,6 +36,7 @@
 #include "main/macros.h"
 #include "main/mtypes.h"
 #include "main/state.h"
+#include "main/samplerobj.h"
 #include "program/prog_instruction.h"
 
 #include "s_aatriangle.h"
@@ -1045,18 +1046,25 @@ _swrast_choose_triangle( struct gl_context *ctx )
           swrast->_FogEnabled) {
          /* Ugh, we do a _lot_ of tests to pick the best textured tri func */
          const struct gl_texture_object *texObj2D;
+         const struct gl_sampler_object *samp;
          const struct gl_texture_image *texImg;
          const struct swrast_texture_image *swImg;
          GLenum minFilter, magFilter, envMode;
          gl_format format;
          texObj2D = ctx->Texture.Unit[0].CurrentTex[TEXTURE_2D_INDEX];
+         if (ctx->Texture.Unit[0].Sampler)
+            samp = ctx->Texture.Unit[0].Sampler;
+         else if (texObj2D)
+            samp = &texObj2D->Sampler;
+         else
+            samp = NULL;
 
          texImg = texObj2D ? texObj2D->Image[0][texObj2D->BaseLevel] : NULL;
          swImg = swrast_texture_image_const(texImg);
 
          format = texImg ? texImg->TexFormat : MESA_FORMAT_NONE;
-         minFilter = texObj2D ? texObj2D->Sampler.MinFilter : GL_NONE;
-         magFilter = texObj2D ? texObj2D->Sampler.MagFilter : GL_NONE;
+         minFilter = texObj2D ? samp->MinFilter : GL_NONE;
+         magFilter = texObj2D ? samp->MagFilter : GL_NONE;
          envMode = ctx->Texture.Unit[0].EnvMode;
 
          /* First see if we can use an optimized 2-D texture function */
@@ -1065,8 +1073,8 @@ _swrast_choose_triangle( struct gl_context *ctx )
              && !ctx->ATIFragmentShader._Enabled
              && ctx->Texture._EnabledUnits == 0x1
              && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT
-             && texObj2D->Sampler.WrapS == GL_REPEAT
-             && texObj2D->Sampler.WrapT == GL_REPEAT
+             && samp->WrapS == GL_REPEAT
+             && samp->WrapT == GL_REPEAT
              && texObj2D->_Swizzle == SWIZZLE_NOOP
              && swImg->_IsPowerOfTwo
              && texImg->Border == 0
diff --git a/mesalib/src/mesa/tnl/t_vb_program.c b/mesalib/src/mesa/tnl/t_vb_program.c
index 7687ae0b3..74772dbbe 100644
--- a/mesalib/src/mesa/tnl/t_vb_program.c
+++ b/mesalib/src/mesa/tnl/t_vb_program.c
@@ -35,6 +35,7 @@
 #include "main/colormac.h"
 #include "main/macros.h"
 #include "main/imports.h"
+#include "main/samplerobj.h"
 #include "math/m_xform.h"
 #include "program/prog_instruction.h"
 #include "program/prog_statevars.h"
@@ -197,7 +198,8 @@ vp_fetch_texel(struct gl_context *ctx, const GLfloat texcoord[4], GLfloat lambda
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 
    /* XXX use a float-valued TextureSample routine here!!! */
-   swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current,
+   swrast->TextureSample[unit](ctx, _mesa_get_samplerobj(ctx, unit),
+                               ctx->Texture.Unit[unit]._Current,
                                1, (const GLfloat (*)[4]) texcoord,
                                &lambda,  (GLfloat (*)[4]) color);
 }