glsl2: Move ir_to_mesa handling to driver CompileShader and LinkShader hooks.

This lets drivers override ir_to_mesa with their own codegen, or at
least have a native alternative.

2 files changed, 23 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 825073ca88..71d0f570e4 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -595,6 +595,27 @@ struct dd_function_table {
    
    /*@}*/
 
+   /**
+    * \name GLSL shader/program functions.
+    */
+   /*@{*/
+   /**
+    * Called when a shader is compiled.
+    *
+    * Note that not all shader objects get ShaderCompile called on
+    * them.  Notably, the shaders containing builtin functions do not
+    * have CompileShader() called, so if lowering passes are done they
+    * need to also be performed in LinkShader().
+    */
+   GLboolean (*CompileShader)(GLcontext *ctx, struct gl_shader *shader);
+   /**
+    * Called when a shader program is linked.
+    *
+    * This gives drivers an opportunity to clone the IR and make their
+    * own transformations on it for the purposes of code generation.
+    */
+   GLboolean (*LinkShader)(GLcontext *ctx, struct gl_shader_program *shader);
+   /*@}*/
 
    /**
     * \name State-changing functions.
diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
index 129d974224..863d50fbe5 100644
--- a/src/mesa/main/shaderobj.c
+++ b/src/mesa/main/shaderobj.c
@@ -387,4 +387,6 @@ _mesa_init_shader_object_functions(struct dd_function_table *driver)
    driver->DeleteShader = __mesa_delete_shader;
    driver->NewShaderProgram = _mesa_new_shader_program;
    driver->DeleteShaderProgram = __mesa_delete_shader_program;
+   driver->CompileShader = _mesa_ir_compile_shader;
+   driver->LinkShader = _mesa_ir_link_shader;
 }