1 files changed, 76 insertions, 5 deletions

diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c
index c92bf29c3..a3964798b 100644
--- a/mesalib/src/mesa/drivers/common/meta.c
+++ b/mesalib/src/mesa/drivers/common/meta.c
@@ -40,6 +40,7 @@
 #include "main/bufferobj.h"
 #include "main/buffers.h"
 #include "main/colortab.h"
+#include "main/condrender.h"
 #include "main/depth.h"
 #include "main/enable.h"
 #include "main/fbobject.h"
@@ -92,6 +93,9 @@
 #define META_TEXTURE        0x1000
 #define META_VERTEX         0x2000
 #define META_VIEWPORT       0x4000
+#define META_CLAMP_FRAGMENT_COLOR 0x8000
+#define META_CLAMP_VERTEX_COLOR 0x10000
+#define META_CONDITIONAL_RENDER 0x20000
 /*@}*/
 
 
@@ -180,6 +184,16 @@ struct save_state
    GLint ViewportX, ViewportY, ViewportW, ViewportH;
    GLclampd DepthNear, DepthFar;
 
+   /** META_CLAMP_FRAGMENT_COLOR */
+   GLenum ClampFragmentColor;
+
+   /** META_CLAMP_VERTEX_COLOR */
+   GLenum ClampVertexColor;
+
+   /** META_CONDITIONAL_RENDER */
+   struct gl_query_object *CondRenderQuery;
+   GLenum CondRenderMode;
+
    /** Miscellaneous (always disabled) */
    GLboolean Lighting;
 };
@@ -569,6 +583,34 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
       _mesa_DepthRange(0.0, 1.0);
    }
 
+   if (state & META_CLAMP_FRAGMENT_COLOR) {
+      save->ClampFragmentColor = ctx->Color.ClampFragmentColor;
+
+      /* Generally in here we want to do clamping according to whether
+       * it's for the pixel path (ClampFragmentColor is GL_TRUE),
+       * regardless of the internal implementation of the metaops.
+       */
+      if (ctx->Color.ClampFragmentColor != GL_TRUE)
+	 _mesa_ClampColorARB(GL_CLAMP_FRAGMENT_COLOR, GL_FALSE);
+   }
+
+   if (state & META_CLAMP_VERTEX_COLOR) {
+      save->ClampVertexColor = ctx->Light.ClampVertexColor;
+
+      /* Generally in here we never want vertex color clamping --
+       * result clamping is only dependent on fragment clamping.
+       */
+      _mesa_ClampColorARB(GL_CLAMP_VERTEX_COLOR, GL_FALSE);
+   }
+
+   if (state & META_CONDITIONAL_RENDER) {
+      save->CondRenderQuery = ctx->Query.CondRenderQuery;
+      save->CondRenderMode = ctx->Query.CondRenderMode;
+
+      if (ctx->Query.CondRenderQuery)
+	 _mesa_EndConditionalRender();
+   }
+
    /* misc */
    {
       save->Lighting = ctx->Light.Enabled;
@@ -833,6 +875,20 @@ _mesa_meta_end(struct gl_context *ctx)
       _mesa_DepthRange(save->DepthNear, save->DepthFar);
    }
 
+   if (state & META_CLAMP_FRAGMENT_COLOR) {
+      _mesa_ClampColorARB(GL_CLAMP_FRAGMENT_COLOR, save->ClampFragmentColor);
+   }
+
+   if (state & META_CLAMP_VERTEX_COLOR) {
+      _mesa_ClampColorARB(GL_CLAMP_VERTEX_COLOR, save->ClampVertexColor);
+   }
+
+   if (state & META_CONDITIONAL_RENDER) {
+      if (save->CondRenderQuery)
+	 _mesa_BeginConditionalRender(save->CondRenderQuery->Id,
+				      save->CondRenderMode);
+   }
+
    /* misc */
    if (save->Lighting) {
       _mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
@@ -1406,7 +1462,10 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
    };
    struct vertex verts[4];
    /* save all state but scissor, pixel pack/unpack */
-   GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;
+   GLbitfield metaSave = (META_ALL -
+			  META_SCISSOR -
+			  META_PIXEL_STORE -
+			  META_CONDITIONAL_RENDER);
    const GLuint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
 
    if (buffers & BUFFER_BITS_COLOR) {
@@ -1441,6 +1500,9 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
    /* GL_COLOR_BUFFER_BIT */
    if (buffers & BUFFER_BITS_COLOR) {
       /* leave colormask, glDrawBuffer state as-is */
+
+      /* Clears never have the color clamped. */
+      _mesa_ClampColorARB(GL_CLAMP_FRAGMENT_COLOR, GL_FALSE);
    }
    else {
       ASSERT(metaSave & META_COLOR_MASK);
@@ -1494,10 +1556,10 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
 
       /* vertex colors */
       for (i = 0; i < 4; i++) {
-         verts[i].r = ctx->Color.ClearColor[0];
-         verts[i].g = ctx->Color.ClearColor[1];
-         verts[i].b = ctx->Color.ClearColor[2];
-         verts[i].a = ctx->Color.ClearColor[3];
+         verts[i].r = ctx->Color.ClearColorUnclamped[0];
+         verts[i].g = ctx->Color.ClearColorUnclamped[1];
+         verts[i].b = ctx->Color.ClearColorUnclamped[2];
+         verts[i].a = ctx->Color.ClearColorUnclamped[3];
       }
 
       /* upload new vertex data */
@@ -1803,6 +1865,14 @@ _mesa_meta_DrawPixels(struct gl_context *ctx,
          texIntFormat = format;
       else
          texIntFormat = GL_RGBA;
+
+      /* If we're not supposed to clamp the resulting color, then just
+       * promote our texture to fully float.  We could do better by
+       * just going for the matching set of channels, in floating
+       * point.
+       */
+      if (ctx->Color.ClampFragmentColor != GL_TRUE)
+	 texIntFormat = GL_RGBA32F;
    }
    else if (_mesa_is_stencil_format(format)) {
       if (ctx->Extensions.ARB_fragment_program &&
@@ -1861,6 +1931,7 @@ _mesa_meta_DrawPixels(struct gl_context *ctx,
                           META_TRANSFORM |
                           META_VERTEX |
                           META_VIEWPORT |
+			  META_CLAMP_FRAGMENT_COLOR |
                           metaExtraSave));
 
    newTex = alloc_texture(tex, width, height, texIntFormat);