Merge commit 'origin/gallium-0.1' into gallium-0.2

5 files changed, 46 insertions, 4 deletions

diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index 7f020fe5d3c..7a8501dcdd3 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -1422,10 +1422,22 @@ _mesa_use_program(GLcontext *ctx, GLuint program)
 
 
 /**
- * Update the vertex and fragment program's TexturesUsed arrays.
+ * Update the vertex/fragment program's TexturesUsed array.
+ *
+ * This needs to be called after glUniform(set sampler var) is called.
+ * A call to glUniform(samplerVar, value) causes a sampler to point to a
+ * particular texture unit.  We know the sampler's texture target
+ * (1D/2D/3D/etc) from compile time but the sampler's texture unit is
+ * set by glUniform() calls.
+ *
+ * So, scan the program->SamplerUnits[] and program->SamplerTargets[]
+ * information to update the prog->TexturesUsed[] values.
+ * Each value of TexturesUsed[unit] is one of zero, TEXTURE_1D_INDEX,
+ * TEXTURE_2D_INDEX, TEXTURE_3D_INDEX, etc.
+ * We'll use that info for state validation before rendering.
  */
-static void
-update_textures_used(struct gl_program *prog)
+void
+_mesa_update_shader_textures_used(struct gl_program *prog)
 {
    GLuint s;
 
@@ -1551,7 +1563,7 @@ set_program_uniform(GLcontext *ctx, struct gl_program *program,
 
       /* This maps a sampler to a texture unit: */
       program->SamplerUnits[sampler] = texUnit;
-      update_textures_used(program);
+      _mesa_update_shader_textures_used(program);
 
       FLUSH_VERTICES(ctx, _NEW_TEXTURE);
    }
diff --git a/src/mesa/shader/shader_api.h b/src/mesa/shader/shader_api.h
index e7f12669156..ec1996ee98d 100644
--- a/src/mesa/shader/shader_api.h
+++ b/src/mesa/shader/shader_api.h
@@ -80,6 +80,10 @@ _mesa_lookup_shader(GLcontext *ctx, GLuint name);
 
 
 extern void
+_mesa_update_shader_textures_used(struct gl_program *prog);
+
+
+extern void
 _mesa_use_program(GLcontext *ctx, GLuint program);
 
 
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 11fdf3b9dc3..2074e842094 100644
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -561,6 +561,9 @@ _slang_link(GLcontext *ctx,
 
 
    if (fragProg && shProg->FragmentProgram) {
+      /* Compute initial program's TexturesUsed info */
+      _mesa_update_shader_textures_used(&shProg->FragmentProgram->Base);
+
       /* notify driver that a new fragment program has been compiled/linked */
       ctx->Driver.ProgramStringNotify(ctx, GL_FRAGMENT_PROGRAM_ARB,
                                       &shProg->FragmentProgram->Base);
@@ -576,6 +579,9 @@ _slang_link(GLcontext *ctx,
    }
 
    if (vertProg && shProg->VertexProgram) {
+      /* Compute initial program's TexturesUsed info */
+      _mesa_update_shader_textures_used(&shProg->VertexProgram->Base);
+
       /* notify driver that a new vertex program has been compiled/linked */
       ctx->Driver.ProgramStringNotify(ctx, GL_VERTEX_PROGRAM_ARB,
                                       &shProg->VertexProgram->Base);
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index 55b52c37451..af0df22dc59 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -512,3 +512,19 @@ st_translate_fragment_program(struct st_context *st,
       tgsi_dump( fs.tokens, 0/*TGSI_DUMP_VERBOSE*/ );
 }
 
+
+/**
+ * Debug- print current shader text
+ */
+void
+st_print_shaders(GLcontext *ctx)
+{
+   struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
+   if (shProg) {
+      GLuint i;
+      for (i = 0; i < shProg->NumShaders; i++) {
+         printf("GLSL shader %u of %u:\n", i, shProg->NumShaders);
+         printf("%s\n", shProg->Shaders[i]->Source);
+      }
+   }
+}
diff --git a/src/mesa/state_tracker/st_program.h b/src/mesa/state_tracker/st_program.h
index 078e2c42a69..e2e5eddef22 100644
--- a/src/mesa/state_tracker/st_program.h
+++ b/src/mesa/state_tracker/st_program.h
@@ -151,4 +151,8 @@ st_translate_vertex_program(struct st_context *st,
                             const ubyte *fs_input_semantic_index);
 
 
+extern void
+st_print_shaders(GLcontext *ctx);
+
+
 #endif