glsl: Merge the lists of uniform blocks into the linked shader program.

This attempts error-checking, but the layout isn't done yet.

Reviewed-by: Ian Romanick <[email protected]>

2 files changed, 40 insertions, 0 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index b39a8dcd75b..3d59dc68ec1 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2216,6 +2216,15 @@ struct gl_shader
     */
    unsigned num_uniform_components;
 
+   /**
+    * This shader's uniform block information.
+    *
+    * The offsets of the variables are assigned only for shaders in a program's
+    * _LinkedShaders[].
+    */
+   struct gl_uniform_block *UniformBlocks;
+   unsigned NumUniformBlocks;
+
    struct exec_list *ir;
    struct glsl_symbol_table *symbols;
 
@@ -2254,6 +2263,19 @@ struct gl_uniform_block
    /** Array of supplemental information about UBO ir_variables. */
    struct gl_uniform_buffer_variable *Uniforms;
    GLuint NumUniforms;
+
+   /**
+    * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
+    * with glBindBufferBase to bind a buffer object to this uniform block.  When
+    * updated in the program, _NEW_BUFFER_OBJECT will be set.
+    */
+   GLuint Binding;
+
+   /**
+    * Minimum size of a buffer object to back this uniform buffer
+    * (GL_UNIFORM_BLOCK_DATA_SIZE).
+    */
+   GLuint UniformBufferSize;
 };
 
 /**
@@ -2338,6 +2360,18 @@ struct gl_shader_program
    unsigned NumUserUniformStorage;
    struct gl_uniform_storage *UniformStorage;
 
+   struct gl_uniform_block *UniformBlocks;
+   unsigned NumUniformBlocks;
+
+   /**
+    * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
+    * they're used in, or -1.
+    *
+    * This is used to maintain the Binding values of the stage's UniformBlocks[]
+    * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
+    */
+   int *UniformBlockStageIndex[MESA_SHADER_TYPES];
+
    /**
     * Map of active uniform names to locations
     *
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 8a4f31162e1..baa317204c4 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -3115,6 +3115,12 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader)
       }
    }
 
+   if (shader->UniformBlocks)
+      ralloc_free(shader->UniformBlocks);
+   shader->NumUniformBlocks = state->num_uniform_blocks;
+   shader->UniformBlocks = state->uniform_blocks;
+   ralloc_steal(shader, shader->UniformBlocks);
+
    /* Retain any live IR, but trash the rest. */
    reparent_ir(shader->ir, shader->ir);