From 5cfbe97cd797d8f78ece208bb5114704b83d8aab Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Fri, 13 Jan 2012 16:54:57 +0100
Subject: libxtrans libXdmcp libxcb mesa xserver git update 13 jan 2012

---
 mesalib/src/mesa/main/shaderapi.c | 95 +++++++++++++--------------------------
 1 file changed, 32 insertions(+), 63 deletions(-)

(limited to 'mesalib/src/mesa/main/shaderapi.c')

diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index 9372d6dec..0e655a0d8 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -45,6 +45,7 @@
 #include "main/mtypes.h"
 #include "main/shaderapi.h"
 #include "main/shaderobj.h"
+#include "main/uniforms.h"
 #include "program/program.h"
 #include "program/prog_parameter.h"
 #include "ralloc.h"
@@ -124,6 +125,8 @@ _mesa_free_shader_state(struct gl_context *ctx)
 				  NULL);
    _mesa_reference_shader_program(ctx, &ctx->Shader.CurrentFragmentProgram,
 				  NULL);
+   _mesa_reference_shader_program(ctx, &ctx->Shader._CurrentFragmentProgram,
+				  NULL);
    _mesa_reference_shader_program(ctx, &ctx->Shader.ActiveProgram, NULL);
 }
 
@@ -876,6 +879,33 @@ use_shader_program(struct gl_context *ctx, GLenum type,
 
    if (*target != shProg) {
       FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
+
+      /* If the shader is also bound as the current rendering shader, unbind
+       * it from that binding point as well.  This ensures that the correct
+       * semantics of glDeleteProgram are maintained.
+       */
+      switch (type) {
+#if FEATURE_ARB_vertex_shader
+      case GL_VERTEX_SHADER:
+	 /* Empty for now. */
+	 break;
+#endif
+#if FEATURE_ARB_geometry_shader4
+      case GL_GEOMETRY_SHADER_ARB:
+	 /* Empty for now. */
+	 break;
+#endif
+#if FEATURE_ARB_fragment_shader
+      case GL_FRAGMENT_SHADER:
+	 if (*target == ctx->Shader._CurrentFragmentProgram) {
+	    _mesa_reference_shader_program(ctx,
+					   &ctx->Shader._CurrentFragmentProgram,
+					   NULL);
+	 }
+	 break;
+#endif
+      }
+
       _mesa_reference_shader_program(ctx, target, shProg);
       return true;
    }
@@ -899,61 +929,6 @@ _mesa_use_program(struct gl_context *ctx, struct gl_shader_program *shProg)
 }
 
 
-/**
- * Validate a program's samplers.
- * Specifically, check that there aren't two samplers of different types
- * pointing to the same texture unit.
- * \return GL_TRUE if valid, GL_FALSE if invalid
- */
-static GLboolean
-validate_samplers(const struct gl_program *prog, char *errMsg)
-{
-   static const char *targetName[] = {
-      "TEXTURE_BUFFER",
-      "TEXTURE_2D_ARRAY",
-      "TEXTURE_1D_ARRAY",
-      "TEXTURE_EXTERNAL",
-      "TEXTURE_CUBE",
-      "TEXTURE_3D",
-      "TEXTURE_RECT",
-      "TEXTURE_2D",
-      "TEXTURE_1D",
-   };
-   GLint targetUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
-   GLbitfield samplersUsed = prog->SamplersUsed;
-   GLuint i;
-
-   STATIC_ASSERT(Elements(targetName) == NUM_TEXTURE_TARGETS);
-
-   if (samplersUsed == 0x0)
-      return GL_TRUE;
-
-   for (i = 0; i < Elements(targetUsed); i++)
-      targetUsed[i] = -1;
-
-   /* walk over bits which are set in 'samplers' */
-   while (samplersUsed) {
-      GLuint unit;
-      gl_texture_index target;
-      GLint sampler = _mesa_ffs(samplersUsed) - 1;
-      assert(sampler >= 0);
-      assert(sampler < Elements(prog->SamplerUnits));
-      unit = prog->SamplerUnits[sampler];
-      target = prog->SamplerTargets[sampler];
-      if (targetUsed[unit] != -1 && targetUsed[unit] != (int) target) {
-         _mesa_snprintf(errMsg, 100,
-		  "Texture unit %d is accessed both as %s and %s",
-		  unit, targetName[targetUsed[unit]], targetName[target]);
-         return GL_FALSE;
-      }
-      targetUsed[unit] = target;
-      samplersUsed ^= (1 << sampler);
-   }
-
-   return GL_TRUE;
-}
-
-
 /**
  * Do validation of the given shader program.
  * \param errMsg  returns error message if validation fails.
@@ -963,8 +938,6 @@ static GLboolean
 validate_shader_program(const struct gl_shader_program *shProg,
                         char *errMsg)
 {
-   unsigned i;
-
    if (!shProg->LinkStatus) {
       return GL_FALSE;
    }
@@ -989,12 +962,8 @@ validate_shader_program(const struct gl_shader_program *shProg,
     * Check: any two active samplers in the current program object are of
     * different types, but refer to the same texture image unit,
     */
-   for (i = 0; i < Elements(shProg->_LinkedShaders); i++) {
-      if (shProg->_LinkedShaders[i]
-	  && !validate_samplers(shProg->_LinkedShaders[i]->Program, errMsg)) {
-	 return GL_FALSE;
-      }
-   }
+   if (!_mesa_sampler_uniforms_are_valid(shProg, errMsg, 100))
+      return GL_FALSE;
 
    return GL_TRUE;
 }
-- 
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