Track separate programs for each stage

The assumption is that all stages are the same program or that
varyings are passed between stages using built-in varyings.

3 files changed, 29 insertions, 11 deletions

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 9946bf1990..1bfd76a665 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -143,7 +143,10 @@ struct save_state
    struct gl_vertex_program *VertexProgram;
    GLboolean FragmentProgramEnabled;
    struct gl_fragment_program *FragmentProgram;
-   GLuint Shader;
+   GLuint VertexShader;
+   GLuint GeometryShader;
+   GLuint FragmentShader;
+   GLuint ActiveShader;
 
    /** META_STENCIL_TEST */
    struct gl_stencil_attrib Stencil;
@@ -433,8 +436,15 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
       }
 
       if (ctx->Extensions.ARB_shader_objects) {
-         save->Shader = ctx->Shader.CurrentProgram ?
-            ctx->Shader.CurrentProgram->Name : 0;
+         save->VertexShader = ctx->Shader.CurrentVertexProgram ?
+            ctx->Shader.CurrentVertexProgram->Name : 0;
+         save->GeometryShader = ctx->Shader.CurrentGeometryProgram ?
+            ctx->Shader.CurrentGeometryProgram->Name : 0;
+         save->FragmentShader = ctx->Shader.CurrentFragmentProgram ?
+            ctx->Shader.CurrentFragmentProgram->Name : 0;
+         save->ActiveShader = ctx->Shader.ActiveProgram ?
+            ctx->Shader.ActiveProgram->Name : 0;
+
          _mesa_UseProgramObjectARB(0);
       }
    }
@@ -664,9 +674,17 @@ _mesa_meta_end(struct gl_context *ctx)
 	 _mesa_reference_fragprog(ctx, &save->FragmentProgram, NULL);
       }
 
-      if (ctx->Extensions.ARB_shader_objects) {
-         _mesa_UseProgramObjectARB(save->Shader);
-      }
+      if (ctx->Extensions.ARB_vertex_shader)
+	 _mesa_UseShaderProgramEXT(GL_VERTEX_SHADER, save->VertexShader);
+
+      if (ctx->Extensions.ARB_geometry_shader4)
+	 _mesa_UseShaderProgramEXT(GL_GEOMETRY_SHADER_ARB,
+				   save->GeometryShader);
+
+      if (ctx->Extensions.ARB_fragment_shader)
+	 _mesa_UseShaderProgramEXT(GL_FRAGMENT_SHADER, save->FragmentShader);
+
+      _mesa_ActiveProgramEXT(save->ActiveShader);
    }
 
    if (state & META_STENCIL_TEST) {
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 4919394bc8..5f6deb841c 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -1186,7 +1186,7 @@ fs_visitor::visit(ir_texture *ir)
    assert(!ir->projector);
 
    sampler = _mesa_get_sampler_uniform_value(ir->sampler,
-					     ctx->Shader.CurrentProgram,
+					     ctx->Shader.CurrentFragmentProgram,
 					     &brw->fragment_program->Base);
    sampler = c->fp->program.Base.SamplerUnits[sampler];
 
@@ -3093,7 +3093,7 @@ fs_visitor::generate_code()
 
    if (INTEL_DEBUG & DEBUG_WM) {
       printf("Native code for fragment shader %d:\n",
-	     ctx->Shader.CurrentProgram->Name);
+	     ctx->Shader.CurrentFragmentProgram->Name);
    }
 
    if_depth_in_loop[loop_stack_depth] = 0;
@@ -3320,7 +3320,7 @@ brw_wm_fs_emit(struct brw_context *brw, struct brw_wm_compile *c)
 {
    struct intel_context *intel = &brw->intel;
    struct gl_context *ctx = &intel->ctx;
-   struct gl_shader_program *prog = ctx->Shader.CurrentProgram;
+   struct gl_shader_program *prog = ctx->Shader.CurrentFragmentProgram;
 
    if (!prog)
       return GL_FALSE;
diff --git a/src/mesa/drivers/dri/i965/brw_wm_state.c b/src/mesa/drivers/dri/i965/brw_wm_state.c
index 433ccc66f0..9a27b93710 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_state.c
@@ -137,9 +137,9 @@ wm_unit_populate_key(struct brw_context *brw, struct brw_wm_unit_key *key)
    /* If using the fragment shader backend, the program is always
     * 8-wide.
     */
-   if (ctx->Shader.CurrentProgram) {
+   if (ctx->Shader.CurrentFragmentProgram) {
       struct brw_shader *shader = (struct brw_shader *)
-	 ctx->Shader.CurrentProgram->_LinkedShaders[MESA_SHADER_FRAGMENT];
+	 ctx->Shader.CurrentFragmentProgram->_LinkedShaders[MESA_SHADER_FRAGMENT];
 
       if (shader != NULL && shader->ir != NULL) {
 	 key->is_glsl = GL_TRUE;