xserver and mesa git update 28-12-2010

1 files changed, 1036 insertions, 1036 deletions

diff --git a/mesalib/src/mesa/main/texenv.c b/mesalib/src/mesa/main/texenv.c
index 3a55128c7..5669cc4bc 100644
--- a/mesalib/src/mesa/main/texenv.c
+++ b/mesalib/src/mesa/main/texenv.c
@@ -1,1036 +1,1036 @@
-/*
- * Mesa 3-D graphics library
- * Version:  7.5
- *
- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/** 
- * \file texenv.c
- *
- * glTexEnv-related functions
- */
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/enums.h"
-#include "main/macros.h"
-#include "main/texenv.h"
-#include "main/texstate.h"
-
-
-#define TE_ERROR(errCode, msg, value)				\
-   _mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));
-
-
-/** Set texture env mode */
-static void
-set_env_mode(GLcontext *ctx,
-             struct gl_texture_unit *texUnit,
-             GLenum mode)
-{
-   GLboolean legal;
-
-   if (texUnit->EnvMode == mode)
-      return;
-
-   switch (mode) {
-   case GL_MODULATE:
-   case GL_BLEND:
-   case GL_DECAL:
-   case GL_REPLACE:
-      legal = GL_TRUE;
-      break;
-   case GL_REPLACE_EXT:
-      mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */
-      legal = GL_TRUE;
-      break;
-   case GL_ADD:
-      legal = ctx->Extensions.EXT_texture_env_add;
-      break;
-   case GL_COMBINE:
-      legal = (ctx->Extensions.EXT_texture_env_combine ||
-               ctx->Extensions.ARB_texture_env_combine);
-      break;
-   case GL_COMBINE4_NV:
-      legal = ctx->Extensions.NV_texture_env_combine4;
-      break;
-   default:
-      legal = GL_FALSE;
-   }
-
-   if (legal) {
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      texUnit->EnvMode = mode;
-   }
-   else {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
-   }
-}
-
-
-static void
-set_env_color(GLcontext *ctx,
-              struct gl_texture_unit *texUnit,
-              const GLfloat *color)
-{
-   GLfloat tmp[4];
-   tmp[0] = CLAMP(color[0], 0.0F, 1.0F);
-   tmp[1] = CLAMP(color[1], 0.0F, 1.0F);
-   tmp[2] = CLAMP(color[2], 0.0F, 1.0F);
-   tmp[3] = CLAMP(color[3], 0.0F, 1.0F);
-   if (TEST_EQ_4V(tmp, texUnit->EnvColor))
-      return;
-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-   COPY_4FV(texUnit->EnvColor, tmp);
-}
-
-
-/** Set an RGB or A combiner mode/function */
-static void
-set_combiner_mode(GLcontext *ctx,
-                  struct gl_texture_unit *texUnit,
-                  GLenum pname, GLenum mode)
-{
-   GLboolean legal;
-
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
-   switch (mode) {
-   case GL_REPLACE:
-   case GL_MODULATE:
-   case GL_ADD:
-   case GL_ADD_SIGNED:
-   case GL_INTERPOLATE:
-      legal = GL_TRUE;
-      break;
-   case GL_SUBTRACT:
-      legal = ctx->Extensions.ARB_texture_env_combine;
-      break;
-   case GL_DOT3_RGB_EXT:
-   case GL_DOT3_RGBA_EXT:
-      legal = (ctx->Extensions.EXT_texture_env_dot3 &&
-               pname == GL_COMBINE_RGB);
-      break;
-   case GL_DOT3_RGB:
-   case GL_DOT3_RGBA:
-      legal = (ctx->Extensions.ARB_texture_env_dot3 &&
-               pname == GL_COMBINE_RGB);
-      break;
-   case GL_MODULATE_ADD_ATI:
-   case GL_MODULATE_SIGNED_ADD_ATI:
-   case GL_MODULATE_SUBTRACT_ATI:
-      legal = ctx->Extensions.ATI_texture_env_combine3;
-      break;
-   case GL_BUMP_ENVMAP_ATI:
-      legal = (ctx->Extensions.ATI_envmap_bumpmap &&
-               pname == GL_COMBINE_RGB);
-      break;
-   default:
-      legal = GL_FALSE;
-   }
-
-   if (!legal) {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
-      return;
-   }
-
-   switch (pname) {
-   case GL_COMBINE_RGB:
-      if (texUnit->Combine.ModeRGB == mode)
-         return;
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      texUnit->Combine.ModeRGB = mode;
-      break;
-
-   case GL_COMBINE_ALPHA:
-      if (texUnit->Combine.ModeA == mode)
-         return;
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      texUnit->Combine.ModeA = mode;
-      break;
-   default:
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-   }
-}
-
-
-
-/** Set an RGB or A combiner source term */
-static void
-set_combiner_source(GLcontext *ctx,
-                    struct gl_texture_unit *texUnit,
-                    GLenum pname, GLenum param)
-{
-   GLuint term;
-   GLboolean alpha, legal;
-
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
-   /*
-    * Translate pname to (term, alpha).
-    *
-    * The enums were given sequential values for a reason.
-    */
-   switch (pname) {
-   case GL_SOURCE0_RGB:
-   case GL_SOURCE1_RGB:
-   case GL_SOURCE2_RGB:
-   case GL_SOURCE3_RGB_NV:
-      term = pname - GL_SOURCE0_RGB;
-      alpha = GL_FALSE;
-      break;
-   case GL_SOURCE0_ALPHA:
-   case GL_SOURCE1_ALPHA:
-   case GL_SOURCE2_ALPHA:
-   case GL_SOURCE3_ALPHA_NV:
-      term = pname - GL_SOURCE0_ALPHA;
-      alpha = GL_TRUE;
-      break;
-   default:
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-      return;
-   }
-
-   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-      return;
-   }
-
-   assert(term < MAX_COMBINER_TERMS);
-
-   /*
-    * Error-check param (the source term)
-    */
-   switch (param) {
-   case GL_TEXTURE:
-   case GL_CONSTANT:
-   case GL_PRIMARY_COLOR:
-   case GL_PREVIOUS:
-      legal = GL_TRUE;
-      break;
-   case GL_TEXTURE0:
-   case GL_TEXTURE1:
-   case GL_TEXTURE2:
-   case GL_TEXTURE3:
-   case GL_TEXTURE4:
-   case GL_TEXTURE5:
-   case GL_TEXTURE6:
-   case GL_TEXTURE7:
-      legal = (ctx->Extensions.ARB_texture_env_crossbar &&
-               param - GL_TEXTURE0 < ctx->Const.MaxTextureUnits);
-      break;
-   case GL_ZERO:
-      legal = (ctx->Extensions.ATI_texture_env_combine3 ||
-               ctx->Extensions.NV_texture_env_combine4);
-      break;
-   case GL_ONE:
-      legal = ctx->Extensions.ATI_texture_env_combine3;
-      break;
-   default:
-      legal = GL_FALSE;
-   }
-
-   if (!legal) {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);
-      return;
-   }
-
-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-
-   if (alpha)
-      texUnit->Combine.SourceA[term] = param;
-   else
-      texUnit->Combine.SourceRGB[term] = param;
-}
-
-
-/** Set an RGB or A combiner operand term */
-static void
-set_combiner_operand(GLcontext *ctx,
-                     struct gl_texture_unit *texUnit,
-                     GLenum pname, GLenum param)
-{
-   GLuint term;
-   GLboolean alpha, legal;
-
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
-   /* The enums were given sequential values for a reason.
-    */
-   switch (pname) {
-   case GL_OPERAND0_RGB:
-   case GL_OPERAND1_RGB:
-   case GL_OPERAND2_RGB:
-   case GL_OPERAND3_RGB_NV:
-      term = pname - GL_OPERAND0_RGB;
-      alpha = GL_FALSE;
-      break;
-   case GL_OPERAND0_ALPHA:
-   case GL_OPERAND1_ALPHA:
-   case GL_OPERAND2_ALPHA:
-   case GL_OPERAND3_ALPHA_NV:
-      term = pname - GL_OPERAND0_ALPHA;
-      alpha = GL_TRUE;
-      break;
-   default:
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-      return;
-   }
-
-   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-      return;
-   }
-
-   assert(term < MAX_COMBINER_TERMS);
-
-   /*
-    * Error-check param (the source operand)
-    */
-   switch (param) {
-   case GL_SRC_COLOR:
-   case GL_ONE_MINUS_SRC_COLOR:
-      /* The color input can only be used with GL_OPERAND[01]_RGB in the EXT
-       * version.  In the ARB and NV versions they can be used for any RGB
-       * operand.
-       */
-      legal = !alpha
-	 && ((term < 2) || ctx->Extensions.ARB_texture_env_combine
-	     || ctx->Extensions.NV_texture_env_combine4);
-      break;
-   case GL_ONE_MINUS_SRC_ALPHA:
-      /* GL_ONE_MINUS_SRC_ALPHA can only be used with
-       * GL_OPERAND[01]_(RGB|ALPHA) in the EXT version.  In the ARB and NV
-       * versions it can be used for any operand.
-       */
-      legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine
-	 || ctx->Extensions.NV_texture_env_combine4;
-      break;
-   case GL_SRC_ALPHA:
-      legal = GL_TRUE;
-      break;
-   default:
-      legal = GL_FALSE;
-   }
-
-   if (!legal) {
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);
-      return;
-   }
-
-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-
-   if (alpha)
-      texUnit->Combine.OperandA[term] = param;
-   else
-      texUnit->Combine.OperandRGB[term] = param;
-}
-
-
-static void
-set_combiner_scale(GLcontext *ctx,
-                   struct gl_texture_unit *texUnit,
-                   GLenum pname, GLfloat scale)
-{
-   GLuint shift;
-
-   if (!ctx->Extensions.EXT_texture_env_combine &&
-       !ctx->Extensions.ARB_texture_env_combine) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");
-      return;
-   }
-
-   if (scale == 1.0F) {
-      shift = 0;
-   }
-   else if (scale == 2.0F) {
-      shift = 1;
-   }
-   else if (scale == 4.0F) {
-      shift = 2;
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_VALUE,
-                   "glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
-      return;
-   }
-
-   switch (pname) {
-   case GL_RGB_SCALE:
-      if (texUnit->Combine.ScaleShiftRGB == shift)
-         return;
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      texUnit->Combine.ScaleShiftRGB = shift;
-      break;
-   case GL_ALPHA_SCALE:
-      if (texUnit->Combine.ScaleShiftA == shift)
-         return;
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      texUnit->Combine.ScaleShiftA = shift;
-      break;
-   default:
-      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-   }
-}
-
-
-
-void GLAPIENTRY
-_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
-{
-   GLuint maxUnit;
-   GET_CURRENT_CONTEXT(ctx);
-   struct gl_texture_unit *texUnit;
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
-   if (ctx->Texture.CurrentUnit >= maxUnit) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (target == GL_TEXTURE_ENV) {
-      switch (pname) {
-      case GL_TEXTURE_ENV_MODE:
-         set_env_mode(ctx, texUnit, (GLenum) (GLint) param[0]);
-         break;
-      case GL_TEXTURE_ENV_COLOR:
-         set_env_color(ctx, texUnit, param);
-         break;
-      case GL_COMBINE_RGB:
-      case GL_COMBINE_ALPHA:
-         set_combiner_mode(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
-	 break;
-      case GL_SOURCE0_RGB:
-      case GL_SOURCE1_RGB:
-      case GL_SOURCE2_RGB:
-      case GL_SOURCE3_RGB_NV:
-      case GL_SOURCE0_ALPHA:
-      case GL_SOURCE1_ALPHA:
-      case GL_SOURCE2_ALPHA:
-      case GL_SOURCE3_ALPHA_NV:
-         set_combiner_source(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
-	 break;
-      case GL_OPERAND0_RGB:
-      case GL_OPERAND1_RGB:
-      case GL_OPERAND2_RGB:
-      case GL_OPERAND3_RGB_NV:
-      case GL_OPERAND0_ALPHA:
-      case GL_OPERAND1_ALPHA:
-      case GL_OPERAND2_ALPHA:
-      case GL_OPERAND3_ALPHA_NV:
-         set_combiner_operand(ctx, texUnit, pname, (GLenum) (GLint) param[0]);
-	 break;
-      case GL_RGB_SCALE:
-      case GL_ALPHA_SCALE:
-         set_combiner_scale(ctx, texUnit, pname, param[0]);
-	 break;
-      case GL_BUMP_TARGET_ATI:
-         if (!ctx->Extensions.ATI_envmap_bumpmap) {
-	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
-	    return;
-	 }
-	 if (((GLenum) (GLint) param[0] < GL_TEXTURE0) ||
-	 ((GLenum) (GLint) param[0] > GL_TEXTURE31)) {
-	    /* spec doesn't say this but it seems logical */
-	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);
-	    return;
-	 }
-	 if (!((1 << ((GLenum) (GLint) param[0] - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) {
-	    _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);
-	    return;
-	 }
-	 else {
-	    FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-	    texUnit->BumpTarget = (GLenum) (GLint) param[0];
-	 }
-	 break;
-      default:
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
-	 return;
-      }
-   }
-   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
-	 return;
-      }
-      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
-	 if (texUnit->LodBias == param[0])
-	    return;
-	 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-         texUnit->LodBias = param[0];
-      }
-      else {
-         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
-	 return;
-      }
-   }
-   else if (target == GL_POINT_SPRITE_NV) {
-      /* GL_ARB_point_sprite / GL_NV_point_sprite */
-      if (!ctx->Extensions.NV_point_sprite
-	  && !ctx->Extensions.ARB_point_sprite) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
-	 return;
-      }
-      if (pname == GL_COORD_REPLACE_NV) {
-         const GLenum value = (GLenum) param[0];
-         if (value == GL_TRUE || value == GL_FALSE) {
-            /* It's kind of weird to set point state via glTexEnv,
-             * but that's what the spec calls for.
-             */
-            const GLboolean state = (GLboolean) value;
-            if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
-               return;
-            FLUSH_VERTICES(ctx, _NEW_POINT);
-            ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
-         }
-         else {
-            _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
-            return;
-         }
-      }
-      else {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
-         return;
-      }
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );
-      return;
-   }
-
-   if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
-      _mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
-                  _mesa_lookup_enum_by_nr(target),
-                  _mesa_lookup_enum_by_nr(pname),
-                  *param,
-                  _mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
-
-   /* Tell device driver about the new texture environment */
-   if (ctx->Driver.TexEnv) {
-      (*ctx->Driver.TexEnv)( ctx, target, pname, param );
-   }
-}
-
-
-void GLAPIENTRY
-_mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
-{
-   GLfloat p[4];
-   p[0] = param;
-   p[1] = p[2] = p[3] = 0.0;
-   _mesa_TexEnvfv( target, pname, p );
-}
-
-
-
-void GLAPIENTRY
-_mesa_TexEnvi( GLenum target, GLenum pname, GLint param )
-{
-   GLfloat p[4];
-   p[0] = (GLfloat) param;
-   p[1] = p[2] = p[3] = 0.0;
-   _mesa_TexEnvfv( target, pname, p );
-}
-
-
-void GLAPIENTRY
-_mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
-{
-   GLfloat p[4];
-   if (pname == GL_TEXTURE_ENV_COLOR) {
-      p[0] = INT_TO_FLOAT( param[0] );
-      p[1] = INT_TO_FLOAT( param[1] );
-      p[2] = INT_TO_FLOAT( param[2] );
-      p[3] = INT_TO_FLOAT( param[3] );
-   }
-   else {
-      p[0] = (GLfloat) param[0];
-      p[1] = p[2] = p[3] = 0;  /* init to zero, just to be safe */
-   }
-   _mesa_TexEnvfv( target, pname, p );
-}
-
-
-
-/**
- * Helper for glGetTexEnvi/f()
- * \return  value of queried pname or -1 if error.
- */
-static GLint
-get_texenvi(GLcontext *ctx, const struct gl_texture_unit *texUnit,
-            GLenum pname)
-{
-   switch (pname) {
-   case GL_TEXTURE_ENV_MODE:
-      return texUnit->EnvMode;
-      break;
-   case GL_COMBINE_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return texUnit->Combine.ModeRGB;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_COMBINE_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return texUnit->Combine.ModeA;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_SOURCE0_RGB:
-   case GL_SOURCE1_RGB:
-   case GL_SOURCE2_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
-         return texUnit->Combine.SourceRGB[rgb_idx];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_SOURCE3_RGB_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         return texUnit->Combine.SourceRGB[3];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_SOURCE0_ALPHA:
-   case GL_SOURCE1_ALPHA:
-   case GL_SOURCE2_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
-         return texUnit->Combine.SourceA[alpha_idx];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_SOURCE3_ALPHA_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         return texUnit->Combine.SourceA[3];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_OPERAND0_RGB:
-   case GL_OPERAND1_RGB:
-   case GL_OPERAND2_RGB:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned op_rgb = pname - GL_OPERAND0_RGB;
-         return texUnit->Combine.OperandRGB[op_rgb];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_OPERAND3_RGB_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         return texUnit->Combine.OperandRGB[3];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_OPERAND0_ALPHA:
-   case GL_OPERAND1_ALPHA:
-   case GL_OPERAND2_ALPHA:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
-         return texUnit->Combine.OperandA[op_alpha];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_OPERAND3_ALPHA_NV:
-      if (ctx->Extensions.NV_texture_env_combine4) {
-         return texUnit->Combine.OperandA[3];
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_RGB_SCALE:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return 1 << texUnit->Combine.ScaleShiftRGB;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_ALPHA_SCALE:
-      if (ctx->Extensions.EXT_texture_env_combine ||
-          ctx->Extensions.ARB_texture_env_combine) {
-         return 1 << texUnit->Combine.ScaleShiftA;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-   case GL_BUMP_TARGET_ATI:
-      /* spec doesn't say so, but I think this should be queryable */
-      if (ctx->Extensions.ATI_envmap_bumpmap) {
-         return texUnit->BumpTarget;
-      }
-      else {
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
-      }
-      break;
-
-   default:
-      ;
-   }
-
-   return -1; /* error */
-}
-
-
-
-void GLAPIENTRY
-_mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
-{
-   GLuint maxUnit;
-   const struct gl_texture_unit *texUnit;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
-   if (ctx->Texture.CurrentUnit >= maxUnit) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (target == GL_TEXTURE_ENV) {
-      if (pname == GL_TEXTURE_ENV_COLOR) {
-         COPY_4FV( params, texUnit->EnvColor );
-      }
-      else {
-         GLint val = get_texenvi(ctx, texUnit, pname);
-         if (val >= 0) {
-            *params = (GLfloat) val;
-         }
-      }
-   }
-   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
-	 return;
-      }
-      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
-         *params = texUnit->LodBias;
-      }
-      else {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
-	 return;
-      }
-   }
-   else if (target == GL_POINT_SPRITE_NV) {
-      /* GL_ARB_point_sprite / GL_NV_point_sprite */
-      if (!ctx->Extensions.NV_point_sprite
-	  && !ctx->Extensions.ARB_point_sprite) {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
-         return;
-      }
-      if (pname == GL_COORD_REPLACE_NV) {
-         *params = (GLfloat) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
-      }
-      else {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
-         return;
-      }
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
-      return;
-   }
-}
-
-
-void GLAPIENTRY
-_mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
-{
-   GLuint maxUnit;
-   const struct gl_texture_unit *texUnit;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
-   if (ctx->Texture.CurrentUnit >= maxUnit) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (target == GL_TEXTURE_ENV) {
-      if (pname == GL_TEXTURE_ENV_COLOR) {
-         params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );
-         params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );
-         params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );
-         params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
-      }
-      else {
-         GLint val = get_texenvi(ctx, texUnit, pname);
-         if (val >= 0) {
-            *params = val;
-         }
-      }
-   }
-   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
-      /* GL_EXT_texture_lod_bias */
-      if (!ctx->Extensions.EXT_texture_lod_bias) {
-	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
-	 return;
-      }
-      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
-         *params = (GLint) texUnit->LodBias;
-      }
-      else {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
-	 return;
-      }
-   }
-   else if (target == GL_POINT_SPRITE_NV) {
-      /* GL_ARB_point_sprite / GL_NV_point_sprite */
-      if (!ctx->Extensions.NV_point_sprite
-	  && !ctx->Extensions.ARB_point_sprite) {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
-         return;
-      }
-      if (pname == GL_COORD_REPLACE_NV) {
-         *params = (GLint) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
-      }
-      else {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
-         return;
-      }
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
-      return;
-   }
-}
-
-
-/**
- * Why does ATI_envmap_bumpmap require new entrypoints? Should just
- * reuse TexEnv ones...
- */
-void GLAPIENTRY
-_mesa_TexBumpParameterivATI( GLenum pname, const GLint *param )
-{
-   GLfloat p[4];
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (!ctx->Extensions.ATI_envmap_bumpmap) {
-      /* This isn't an "official" error case, but let's tell the user
-       * that something's wrong.
-       */
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterivATI");
-      return;
-   }
-
-   if (pname == GL_BUMP_ROT_MATRIX_ATI) {
-      /* hope that conversion is correct here */
-      p[0] = INT_TO_FLOAT( param[0] );
-      p[1] = INT_TO_FLOAT( param[1] );
-      p[2] = INT_TO_FLOAT( param[2] );
-      p[3] = INT_TO_FLOAT( param[3] );
-   }
-   else {
-      p[0] = (GLfloat) param[0];
-      p[1] = p[2] = p[3] = 0.0F;  /* init to zero, just to be safe */
-   }
-   _mesa_TexBumpParameterfvATI( pname, p );
-}
-
-
-void GLAPIENTRY
-_mesa_TexBumpParameterfvATI( GLenum pname, const GLfloat *param )
-{
-   struct gl_texture_unit *texUnit;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (!ctx->Extensions.ATI_envmap_bumpmap) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterfvATI");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (pname == GL_BUMP_ROT_MATRIX_ATI) {
-      if (TEST_EQ_4V(param, texUnit->RotMatrix))
-         return;
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-      COPY_4FV(texUnit->RotMatrix, param);
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glTexBumpParameter(pname)" );
-      return;
-   }
-   /* Drivers might want to know about this, instead of dedicated function
-      just shove it into TexEnv where it really belongs anyway */
-   if (ctx->Driver.TexEnv) {
-      (*ctx->Driver.TexEnv)( ctx, 0, pname, param );
-   }
-}
-
-
-void GLAPIENTRY
-_mesa_GetTexBumpParameterivATI( GLenum pname, GLint *param )
-{
-   const struct gl_texture_unit *texUnit;
-   GLuint i;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (!ctx->Extensions.ATI_envmap_bumpmap) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterivATI");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) {
-      /* spec leaves open to support larger matrices.
-         Don't think anyone would ever want to use it
-         (and apps almost certainly would not understand it and
-         thus fail to submit matrices correctly) so hardcode this. */
-      *param = 4;
-   }
-   else if (pname == GL_BUMP_ROT_MATRIX_ATI) {
-      /* hope that conversion is correct here */
-      param[0] = FLOAT_TO_INT(texUnit->RotMatrix[0]);
-      param[1] = FLOAT_TO_INT(texUnit->RotMatrix[1]);
-      param[2] = FLOAT_TO_INT(texUnit->RotMatrix[2]);
-      param[3] = FLOAT_TO_INT(texUnit->RotMatrix[3]);
-   }
-   else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) {
-      GLint count = 0;
-      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
-         if (ctx->Const.SupportedBumpUnits & (1 << i)) {
-            count++;
-         }
-      }
-      *param = count;
-   }
-   else if (pname == GL_BUMP_TEX_UNITS_ATI) {
-      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
-         if (ctx->Const.SupportedBumpUnits & (1 << i)) {
-            *param++ = i + GL_TEXTURE0;
-         }
-      }
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" );
-      return;
-   }
-}
-
-
-void GLAPIENTRY
-_mesa_GetTexBumpParameterfvATI( GLenum pname, GLfloat *param )
-{
-   const struct gl_texture_unit *texUnit;
-   GLuint i;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (!ctx->Extensions.ATI_envmap_bumpmap) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterfvATI");
-      return;
-   }
-
-   texUnit = _mesa_get_current_tex_unit(ctx);
-
-   if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) {
-      /* spec leaves open to support larger matrices.
-         Don't think anyone would ever want to use it
-         (and apps might not understand it) so hardcode this. */
-      *param = 4.0F;
-   }
-   else if (pname == GL_BUMP_ROT_MATRIX_ATI) {
-      param[0] = texUnit->RotMatrix[0];
-      param[1] = texUnit->RotMatrix[1];
-      param[2] = texUnit->RotMatrix[2];
-      param[3] = texUnit->RotMatrix[3];
-   }
-   else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) {
-      GLint count = 0;
-      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
-         if (ctx->Const.SupportedBumpUnits & (1 << i)) {
-            count++;
-         }
-      }
-      *param = (GLfloat) count;
-   }
-   else if (pname == GL_BUMP_TEX_UNITS_ATI) {
-      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
-         if (ctx->Const.SupportedBumpUnits & (1 << i)) {
-            *param++ = (GLfloat) (i + GL_TEXTURE0);
-         }
-      }
-   }
-   else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" );
-      return;
-   }
-}
+/*

+ * Mesa 3-D graphics library

+ * Version:  7.5

+ *

+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+/** 

+ * \file texenv.c

+ *

+ * glTexEnv-related functions

+ */

+

+

+#include "main/glheader.h"

+#include "main/context.h"

+#include "main/enums.h"

+#include "main/macros.h"

+#include "main/texenv.h"

+#include "main/texstate.h"

+

+

+#define TE_ERROR(errCode, msg, value)				\

+   _mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));

+

+

+/** Set texture env mode */

+static void

+set_env_mode(struct gl_context *ctx,

+             struct gl_texture_unit *texUnit,

+             GLenum mode)

+{

+   GLboolean legal;

+

+   if (texUnit->EnvMode == mode)

+      return;

+

+   switch (mode) {

+   case GL_MODULATE:

+   case GL_BLEND:

+   case GL_DECAL:

+   case GL_REPLACE:

+      legal = GL_TRUE;

+      break;

+   case GL_REPLACE_EXT:

+      mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */

+      legal = GL_TRUE;

+      break;

+   case GL_ADD:

+      legal = ctx->Extensions.EXT_texture_env_add;

+      break;

+   case GL_COMBINE:

+      legal = (ctx->Extensions.EXT_texture_env_combine ||

+               ctx->Extensions.ARB_texture_env_combine);

+      break;

+   case GL_COMBINE4_NV:

+      legal = ctx->Extensions.NV_texture_env_combine4;

+      break;

+   default:

+      legal = GL_FALSE;

+   }

+

+   if (legal) {

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      texUnit->EnvMode = mode;

+   }

+   else {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);

+   }

+}

+

+

+static void

+set_env_color(struct gl_context *ctx,

+              struct gl_texture_unit *texUnit,

+              const GLfloat *color)

+{

+   GLfloat tmp[4];

+   tmp[0] = CLAMP(color[0], 0.0F, 1.0F);

+   tmp[1] = CLAMP(color[1], 0.0F, 1.0F);

+   tmp[2] = CLAMP(color[2], 0.0F, 1.0F);

+   tmp[3] = CLAMP(color[3], 0.0F, 1.0F);

+   if (TEST_EQ_4V(tmp, texUnit->EnvColor))

+      return;

+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+   COPY_4FV(texUnit->EnvColor, tmp);

+}

+

+

+/** Set an RGB or A combiner mode/function */

+static void

+set_combiner_mode(struct gl_context *ctx,

+                  struct gl_texture_unit *texUnit,

+                  GLenum pname, GLenum mode)

+{

+   GLboolean legal;

+

+   if (!ctx->Extensions.EXT_texture_env_combine &&

+       !ctx->Extensions.ARB_texture_env_combine) {

+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");

+      return;

+   }

+

+   switch (mode) {

+   case GL_REPLACE:

+   case GL_MODULATE:

+   case GL_ADD:

+   case GL_ADD_SIGNED:

+   case GL_INTERPOLATE:

+      legal = GL_TRUE;

+      break;

+   case GL_SUBTRACT:

+      legal = ctx->Extensions.ARB_texture_env_combine;

+      break;

+   case GL_DOT3_RGB_EXT:

+   case GL_DOT3_RGBA_EXT:

+      legal = (ctx->Extensions.EXT_texture_env_dot3 &&

+               pname == GL_COMBINE_RGB);

+      break;

+   case GL_DOT3_RGB:

+   case GL_DOT3_RGBA:

+      legal = (ctx->Extensions.ARB_texture_env_dot3 &&

+               pname == GL_COMBINE_RGB);

+      break;

+   case GL_MODULATE_ADD_ATI:

+   case GL_MODULATE_SIGNED_ADD_ATI:

+   case GL_MODULATE_SUBTRACT_ATI:

+      legal = ctx->Extensions.ATI_texture_env_combine3;

+      break;

+   case GL_BUMP_ENVMAP_ATI:

+      legal = (ctx->Extensions.ATI_envmap_bumpmap &&

+               pname == GL_COMBINE_RGB);

+      break;

+   default:

+      legal = GL_FALSE;

+   }

+

+   if (!legal) {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);

+      return;

+   }

+

+   switch (pname) {

+   case GL_COMBINE_RGB:

+      if (texUnit->Combine.ModeRGB == mode)

+         return;

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      texUnit->Combine.ModeRGB = mode;

+      break;

+

+   case GL_COMBINE_ALPHA:

+      if (texUnit->Combine.ModeA == mode)

+         return;

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      texUnit->Combine.ModeA = mode;

+      break;

+   default:

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+   }

+}

+

+

+

+/** Set an RGB or A combiner source term */

+static void

+set_combiner_source(struct gl_context *ctx,

+                    struct gl_texture_unit *texUnit,

+                    GLenum pname, GLenum param)

+{

+   GLuint term;

+   GLboolean alpha, legal;

+

+   if (!ctx->Extensions.EXT_texture_env_combine &&

+       !ctx->Extensions.ARB_texture_env_combine) {

+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");

+      return;

+   }

+

+   /*

+    * Translate pname to (term, alpha).

+    *

+    * The enums were given sequential values for a reason.

+    */

+   switch (pname) {

+   case GL_SOURCE0_RGB:

+   case GL_SOURCE1_RGB:

+   case GL_SOURCE2_RGB:

+   case GL_SOURCE3_RGB_NV:

+      term = pname - GL_SOURCE0_RGB;

+      alpha = GL_FALSE;

+      break;

+   case GL_SOURCE0_ALPHA:

+   case GL_SOURCE1_ALPHA:

+   case GL_SOURCE2_ALPHA:

+   case GL_SOURCE3_ALPHA_NV:

+      term = pname - GL_SOURCE0_ALPHA;

+      alpha = GL_TRUE;

+      break;

+   default:

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+      return;

+   }

+

+   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+      return;

+   }

+

+   assert(term < MAX_COMBINER_TERMS);

+

+   /*

+    * Error-check param (the source term)

+    */

+   switch (param) {

+   case GL_TEXTURE:

+   case GL_CONSTANT:

+   case GL_PRIMARY_COLOR:

+   case GL_PREVIOUS:

+      legal = GL_TRUE;

+      break;

+   case GL_TEXTURE0:

+   case GL_TEXTURE1:

+   case GL_TEXTURE2:

+   case GL_TEXTURE3:

+   case GL_TEXTURE4:

+   case GL_TEXTURE5:

+   case GL_TEXTURE6:

+   case GL_TEXTURE7:

+      legal = (ctx->Extensions.ARB_texture_env_crossbar &&

+               param - GL_TEXTURE0 < ctx->Const.MaxTextureUnits);

+      break;

+   case GL_ZERO:

+      legal = (ctx->Extensions.ATI_texture_env_combine3 ||

+               ctx->Extensions.NV_texture_env_combine4);

+      break;

+   case GL_ONE:

+      legal = ctx->Extensions.ATI_texture_env_combine3;

+      break;

+   default:

+      legal = GL_FALSE;

+   }

+

+   if (!legal) {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);

+      return;

+   }

+

+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+

+   if (alpha)

+      texUnit->Combine.SourceA[term] = param;

+   else

+      texUnit->Combine.SourceRGB[term] = param;

+}

+

+

+/** Set an RGB or A combiner operand term */

+static void

+set_combiner_operand(struct gl_context *ctx,

+                     struct gl_texture_unit *texUnit,

+                     GLenum pname, GLenum param)

+{

+   GLuint term;

+   GLboolean alpha, legal;

+

+   if (!ctx->Extensions.EXT_texture_env_combine &&

+       !ctx->Extensions.ARB_texture_env_combine) {

+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");

+      return;

+   }

+

+   /* The enums were given sequential values for a reason.

+    */

+   switch (pname) {

+   case GL_OPERAND0_RGB:

+   case GL_OPERAND1_RGB:

+   case GL_OPERAND2_RGB:

+   case GL_OPERAND3_RGB_NV:

+      term = pname - GL_OPERAND0_RGB;

+      alpha = GL_FALSE;

+      break;

+   case GL_OPERAND0_ALPHA:

+   case GL_OPERAND1_ALPHA:

+   case GL_OPERAND2_ALPHA:

+   case GL_OPERAND3_ALPHA_NV:

+      term = pname - GL_OPERAND0_ALPHA;

+      alpha = GL_TRUE;

+      break;

+   default:

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+      return;

+   }

+

+   if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+      return;

+   }

+

+   assert(term < MAX_COMBINER_TERMS);

+

+   /*

+    * Error-check param (the source operand)

+    */

+   switch (param) {

+   case GL_SRC_COLOR:

+   case GL_ONE_MINUS_SRC_COLOR:

+      /* The color input can only be used with GL_OPERAND[01]_RGB in the EXT

+       * version.  In the ARB and NV versions they can be used for any RGB

+       * operand.

+       */

+      legal = !alpha

+	 && ((term < 2) || ctx->Extensions.ARB_texture_env_combine

+	     || ctx->Extensions.NV_texture_env_combine4);

+      break;

+   case GL_ONE_MINUS_SRC_ALPHA:

+      /* GL_ONE_MINUS_SRC_ALPHA can only be used with

+       * GL_OPERAND[01]_(RGB|ALPHA) in the EXT version.  In the ARB and NV

+       * versions it can be used for any operand.

+       */

+      legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine

+	 || ctx->Extensions.NV_texture_env_combine4;

+      break;

+   case GL_SRC_ALPHA:

+      legal = GL_TRUE;

+      break;

+   default:

+      legal = GL_FALSE;

+   }

+

+   if (!legal) {

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);

+      return;

+   }

+

+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+

+   if (alpha)

+      texUnit->Combine.OperandA[term] = param;

+   else

+      texUnit->Combine.OperandRGB[term] = param;

+}

+

+

+static void

+set_combiner_scale(struct gl_context *ctx,

+                   struct gl_texture_unit *texUnit,

+                   GLenum pname, GLfloat scale)

+{

+   GLuint shift;

+

+   if (!ctx->Extensions.EXT_texture_env_combine &&

+       !ctx->Extensions.ARB_texture_env_combine) {

+      _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)");

+      return;

+   }

+

+   if (scale == 1.0F) {

+      shift = 0;

+   }

+   else if (scale == 2.0F) {

+      shift = 1;

+   }

+   else if (scale == 4.0F) {

+      shift = 2;

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_VALUE,

+                   "glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );

+      return;

+   }

+

+   switch (pname) {

+   case GL_RGB_SCALE:

+      if (texUnit->Combine.ScaleShiftRGB == shift)

+         return;

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      texUnit->Combine.ScaleShiftRGB = shift;

+      break;

+   case GL_ALPHA_SCALE:

+      if (texUnit->Combine.ScaleShiftA == shift)

+         return;

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      texUnit->Combine.ScaleShiftA = shift;

+      break;

+   default:

+      TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+   }

+}

+

+

+

+void GLAPIENTRY

+_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )

+{

+   GLuint maxUnit;

+   GET_CURRENT_CONTEXT(ctx);

+   struct gl_texture_unit *texUnit;

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)

+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;

+   if (ctx->Texture.CurrentUnit >= maxUnit) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (target == GL_TEXTURE_ENV) {

+      switch (pname) {

+      case GL_TEXTURE_ENV_MODE:

+         set_env_mode(ctx, texUnit, (GLenum) (GLint) param[0]);

+         break;

+      case GL_TEXTURE_ENV_COLOR:

+         set_env_color(ctx, texUnit, param);

+         break;

+      case GL_COMBINE_RGB:

+      case GL_COMBINE_ALPHA:

+         set_combiner_mode(ctx, texUnit, pname, (GLenum) (GLint) param[0]);

+	 break;

+      case GL_SOURCE0_RGB:

+      case GL_SOURCE1_RGB:

+      case GL_SOURCE2_RGB:

+      case GL_SOURCE3_RGB_NV:

+      case GL_SOURCE0_ALPHA:

+      case GL_SOURCE1_ALPHA:

+      case GL_SOURCE2_ALPHA:

+      case GL_SOURCE3_ALPHA_NV:

+         set_combiner_source(ctx, texUnit, pname, (GLenum) (GLint) param[0]);

+	 break;

+      case GL_OPERAND0_RGB:

+      case GL_OPERAND1_RGB:

+      case GL_OPERAND2_RGB:

+      case GL_OPERAND3_RGB_NV:

+      case GL_OPERAND0_ALPHA:

+      case GL_OPERAND1_ALPHA:

+      case GL_OPERAND2_ALPHA:

+      case GL_OPERAND3_ALPHA_NV:

+         set_combiner_operand(ctx, texUnit, pname, (GLenum) (GLint) param[0]);

+	 break;

+      case GL_RGB_SCALE:

+      case GL_ALPHA_SCALE:

+         set_combiner_scale(ctx, texUnit, pname, param[0]);

+	 break;

+      case GL_BUMP_TARGET_ATI:

+         if (!ctx->Extensions.ATI_envmap_bumpmap) {

+	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );

+	    return;

+	 }

+	 if (((GLenum) (GLint) param[0] < GL_TEXTURE0) ||

+	 ((GLenum) (GLint) param[0] > GL_TEXTURE31)) {

+	    /* spec doesn't say this but it seems logical */

+	    _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);

+	    return;

+	 }

+	 if (!((1 << ((GLenum) (GLint) param[0] - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) {

+	    _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", (GLenum) (GLint) param[0]);

+	    return;

+	 }

+	 else {

+	    FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+	    texUnit->BumpTarget = (GLenum) (GLint) param[0];

+	 }

+	 break;

+      default:

+	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );

+	 return;

+      }

+   }

+   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {

+      /* GL_EXT_texture_lod_bias */

+      if (!ctx->Extensions.EXT_texture_lod_bias) {

+	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );

+	 return;

+      }

+      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {

+	 if (texUnit->LodBias == param[0])

+	    return;

+	 FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+         texUnit->LodBias = param[0];

+      }

+      else {

+         TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);

+	 return;

+      }

+   }

+   else if (target == GL_POINT_SPRITE_NV) {

+      /* GL_ARB_point_sprite / GL_NV_point_sprite */

+      if (!ctx->Extensions.NV_point_sprite

+	  && !ctx->Extensions.ARB_point_sprite) {

+	 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );

+	 return;

+      }

+      if (pname == GL_COORD_REPLACE_NV) {

+         const GLenum value = (GLenum) param[0];

+         if (value == GL_TRUE || value == GL_FALSE) {

+            /* It's kind of weird to set point state via glTexEnv,

+             * but that's what the spec calls for.

+             */

+            const GLboolean state = (GLboolean) value;

+            if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)

+               return;

+            FLUSH_VERTICES(ctx, _NEW_POINT);

+            ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;

+         }

+         else {

+            _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);

+            return;

+         }

+      }

+      else {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );

+         return;

+      }

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );

+      return;

+   }

+

+   if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))

+      _mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",

+                  _mesa_lookup_enum_by_nr(target),

+                  _mesa_lookup_enum_by_nr(pname),

+                  *param,

+                  _mesa_lookup_enum_by_nr((GLenum) (GLint) *param));

+

+   /* Tell device driver about the new texture environment */

+   if (ctx->Driver.TexEnv) {

+      (*ctx->Driver.TexEnv)( ctx, target, pname, param );

+   }

+}

+

+

+void GLAPIENTRY

+_mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )

+{

+   GLfloat p[4];

+   p[0] = param;

+   p[1] = p[2] = p[3] = 0.0;

+   _mesa_TexEnvfv( target, pname, p );

+}

+

+

+

+void GLAPIENTRY

+_mesa_TexEnvi( GLenum target, GLenum pname, GLint param )

+{

+   GLfloat p[4];

+   p[0] = (GLfloat) param;

+   p[1] = p[2] = p[3] = 0.0;

+   _mesa_TexEnvfv( target, pname, p );

+}

+

+

+void GLAPIENTRY

+_mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )

+{

+   GLfloat p[4];

+   if (pname == GL_TEXTURE_ENV_COLOR) {

+      p[0] = INT_TO_FLOAT( param[0] );

+      p[1] = INT_TO_FLOAT( param[1] );

+      p[2] = INT_TO_FLOAT( param[2] );

+      p[3] = INT_TO_FLOAT( param[3] );

+   }

+   else {

+      p[0] = (GLfloat) param[0];

+      p[1] = p[2] = p[3] = 0;  /* init to zero, just to be safe */

+   }

+   _mesa_TexEnvfv( target, pname, p );

+}

+

+

+

+/**

+ * Helper for glGetTexEnvi/f()

+ * \return  value of queried pname or -1 if error.

+ */

+static GLint

+get_texenvi(struct gl_context *ctx, const struct gl_texture_unit *texUnit,

+            GLenum pname)

+{

+   switch (pname) {

+   case GL_TEXTURE_ENV_MODE:

+      return texUnit->EnvMode;

+      break;

+   case GL_COMBINE_RGB:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         return texUnit->Combine.ModeRGB;

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_COMBINE_ALPHA:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         return texUnit->Combine.ModeA;

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_SOURCE0_RGB:

+   case GL_SOURCE1_RGB:

+   case GL_SOURCE2_RGB:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         const unsigned rgb_idx = pname - GL_SOURCE0_RGB;

+         return texUnit->Combine.SourceRGB[rgb_idx];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_SOURCE3_RGB_NV:

+      if (ctx->Extensions.NV_texture_env_combine4) {

+         return texUnit->Combine.SourceRGB[3];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_SOURCE0_ALPHA:

+   case GL_SOURCE1_ALPHA:

+   case GL_SOURCE2_ALPHA:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         const unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;

+         return texUnit->Combine.SourceA[alpha_idx];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_SOURCE3_ALPHA_NV:

+      if (ctx->Extensions.NV_texture_env_combine4) {

+         return texUnit->Combine.SourceA[3];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_OPERAND0_RGB:

+   case GL_OPERAND1_RGB:

+   case GL_OPERAND2_RGB:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         const unsigned op_rgb = pname - GL_OPERAND0_RGB;

+         return texUnit->Combine.OperandRGB[op_rgb];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_OPERAND3_RGB_NV:

+      if (ctx->Extensions.NV_texture_env_combine4) {

+         return texUnit->Combine.OperandRGB[3];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_OPERAND0_ALPHA:

+   case GL_OPERAND1_ALPHA:

+   case GL_OPERAND2_ALPHA:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;

+         return texUnit->Combine.OperandA[op_alpha];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_OPERAND3_ALPHA_NV:

+      if (ctx->Extensions.NV_texture_env_combine4) {

+         return texUnit->Combine.OperandA[3];

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_RGB_SCALE:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         return 1 << texUnit->Combine.ScaleShiftRGB;

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_ALPHA_SCALE:

+      if (ctx->Extensions.EXT_texture_env_combine ||

+          ctx->Extensions.ARB_texture_env_combine) {

+         return 1 << texUnit->Combine.ScaleShiftA;

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+   case GL_BUMP_TARGET_ATI:

+      /* spec doesn't say so, but I think this should be queryable */

+      if (ctx->Extensions.ATI_envmap_bumpmap) {

+         return texUnit->BumpTarget;

+      }

+      else {

+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");

+      }

+      break;

+

+   default:

+      ;

+   }

+

+   return -1; /* error */

+}

+

+

+

+void GLAPIENTRY

+_mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )

+{

+   GLuint maxUnit;

+   const struct gl_texture_unit *texUnit;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)

+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;

+   if (ctx->Texture.CurrentUnit >= maxUnit) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (target == GL_TEXTURE_ENV) {

+      if (pname == GL_TEXTURE_ENV_COLOR) {

+         COPY_4FV( params, texUnit->EnvColor );

+      }

+      else {

+         GLint val = get_texenvi(ctx, texUnit, pname);

+         if (val >= 0) {

+            *params = (GLfloat) val;

+         }

+      }

+   }

+   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {

+      /* GL_EXT_texture_lod_bias */

+      if (!ctx->Extensions.EXT_texture_lod_bias) {

+	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );

+	 return;

+      }

+      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {

+         *params = texUnit->LodBias;

+      }

+      else {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );

+	 return;

+      }

+   }

+   else if (target == GL_POINT_SPRITE_NV) {

+      /* GL_ARB_point_sprite / GL_NV_point_sprite */

+      if (!ctx->Extensions.NV_point_sprite

+	  && !ctx->Extensions.ARB_point_sprite) {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );

+         return;

+      }

+      if (pname == GL_COORD_REPLACE_NV) {

+         *params = (GLfloat) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];

+      }

+      else {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );

+         return;

+      }

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );

+      return;

+   }

+}

+

+

+void GLAPIENTRY

+_mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )

+{

+   GLuint maxUnit;

+   const struct gl_texture_unit *texUnit;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)

+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;

+   if (ctx->Texture.CurrentUnit >= maxUnit) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (target == GL_TEXTURE_ENV) {

+      if (pname == GL_TEXTURE_ENV_COLOR) {

+         params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );

+         params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );

+         params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );

+         params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );

+      }

+      else {

+         GLint val = get_texenvi(ctx, texUnit, pname);

+         if (val >= 0) {

+            *params = val;

+         }

+      }

+   }

+   else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {

+      /* GL_EXT_texture_lod_bias */

+      if (!ctx->Extensions.EXT_texture_lod_bias) {

+	 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );

+	 return;

+      }

+      if (pname == GL_TEXTURE_LOD_BIAS_EXT) {

+         *params = (GLint) texUnit->LodBias;

+      }

+      else {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );

+	 return;

+      }

+   }

+   else if (target == GL_POINT_SPRITE_NV) {

+      /* GL_ARB_point_sprite / GL_NV_point_sprite */

+      if (!ctx->Extensions.NV_point_sprite

+	  && !ctx->Extensions.ARB_point_sprite) {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );

+         return;

+      }

+      if (pname == GL_COORD_REPLACE_NV) {

+         *params = (GLint) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];

+      }

+      else {

+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );

+         return;

+      }

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );

+      return;

+   }

+}

+

+

+/**

+ * Why does ATI_envmap_bumpmap require new entrypoints? Should just

+ * reuse TexEnv ones...

+ */

+void GLAPIENTRY

+_mesa_TexBumpParameterivATI( GLenum pname, const GLint *param )

+{

+   GLfloat p[4];

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (!ctx->Extensions.ATI_envmap_bumpmap) {

+      /* This isn't an "official" error case, but let's tell the user

+       * that something's wrong.

+       */

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterivATI");

+      return;

+   }

+

+   if (pname == GL_BUMP_ROT_MATRIX_ATI) {

+      /* hope that conversion is correct here */

+      p[0] = INT_TO_FLOAT( param[0] );

+      p[1] = INT_TO_FLOAT( param[1] );

+      p[2] = INT_TO_FLOAT( param[2] );

+      p[3] = INT_TO_FLOAT( param[3] );

+   }

+   else {

+      p[0] = (GLfloat) param[0];

+      p[1] = p[2] = p[3] = 0.0F;  /* init to zero, just to be safe */

+   }

+   _mesa_TexBumpParameterfvATI( pname, p );

+}

+

+

+void GLAPIENTRY

+_mesa_TexBumpParameterfvATI( GLenum pname, const GLfloat *param )

+{

+   struct gl_texture_unit *texUnit;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (!ctx->Extensions.ATI_envmap_bumpmap) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterfvATI");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (pname == GL_BUMP_ROT_MATRIX_ATI) {

+      if (TEST_EQ_4V(param, texUnit->RotMatrix))

+         return;

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+      COPY_4FV(texUnit->RotMatrix, param);

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glTexBumpParameter(pname)" );

+      return;

+   }

+   /* Drivers might want to know about this, instead of dedicated function

+      just shove it into TexEnv where it really belongs anyway */

+   if (ctx->Driver.TexEnv) {

+      (*ctx->Driver.TexEnv)( ctx, 0, pname, param );

+   }

+}

+

+

+void GLAPIENTRY

+_mesa_GetTexBumpParameterivATI( GLenum pname, GLint *param )

+{

+   const struct gl_texture_unit *texUnit;

+   GLuint i;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (!ctx->Extensions.ATI_envmap_bumpmap) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterivATI");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) {

+      /* spec leaves open to support larger matrices.

+         Don't think anyone would ever want to use it

+         (and apps almost certainly would not understand it and

+         thus fail to submit matrices correctly) so hardcode this. */

+      *param = 4;

+   }

+   else if (pname == GL_BUMP_ROT_MATRIX_ATI) {

+      /* hope that conversion is correct here */

+      param[0] = FLOAT_TO_INT(texUnit->RotMatrix[0]);

+      param[1] = FLOAT_TO_INT(texUnit->RotMatrix[1]);

+      param[2] = FLOAT_TO_INT(texUnit->RotMatrix[2]);

+      param[3] = FLOAT_TO_INT(texUnit->RotMatrix[3]);

+   }

+   else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) {

+      GLint count = 0;

+      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {

+         if (ctx->Const.SupportedBumpUnits & (1 << i)) {

+            count++;

+         }

+      }

+      *param = count;

+   }

+   else if (pname == GL_BUMP_TEX_UNITS_ATI) {

+      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {

+         if (ctx->Const.SupportedBumpUnits & (1 << i)) {

+            *param++ = i + GL_TEXTURE0;

+         }

+      }

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" );

+      return;

+   }

+}

+

+

+void GLAPIENTRY

+_mesa_GetTexBumpParameterfvATI( GLenum pname, GLfloat *param )

+{

+   const struct gl_texture_unit *texUnit;

+   GLuint i;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (!ctx->Extensions.ATI_envmap_bumpmap) {

+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterfvATI");

+      return;

+   }

+

+   texUnit = _mesa_get_current_tex_unit(ctx);

+

+   if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) {

+      /* spec leaves open to support larger matrices.

+         Don't think anyone would ever want to use it

+         (and apps might not understand it) so hardcode this. */

+      *param = 4.0F;

+   }

+   else if (pname == GL_BUMP_ROT_MATRIX_ATI) {

+      param[0] = texUnit->RotMatrix[0];

+      param[1] = texUnit->RotMatrix[1];

+      param[2] = texUnit->RotMatrix[2];

+      param[3] = texUnit->RotMatrix[3];

+   }

+   else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) {

+      GLint count = 0;

+      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {

+         if (ctx->Const.SupportedBumpUnits & (1 << i)) {

+            count++;

+         }

+      }

+      *param = (GLfloat) count;

+   }

+   else if (pname == GL_BUMP_TEX_UNITS_ATI) {

+      for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {

+         if (ctx->Const.SupportedBumpUnits & (1 << i)) {

+            *param++ = (GLfloat) (i + GL_TEXTURE0);

+         }

+      }

+   }

+   else {

+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" );

+      return;

+   }

+}