glsl/mesa: split gl_shader in two

There are two distinctly different uses of this struct. The first
is to store GL shader objects. The second is to store information
about a shader stage thats been linked.

The two uses actually share few fields and there is clearly confusion
about their use. For example the linked shaders map one to one with
a program so can simply be destroyed along with the program. However
previously we were calling reference counting on the linked shaders.

We were also creating linked shaders with a name even though it
is always 0 and called the driver version of the _mesa_new_shader()
function unnecessarily for GL shader objects.

Acked-by: Iago Toral Quiroga <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mesa/main/shaderobj.h b/src/mesa/main/shaderobj.h
index 3abd597a58c..f331db11664 100644
--- a/src/mesa/main/shaderobj.h
+++ b/src/mesa/main/shaderobj.h
@@ -82,9 +82,16 @@ _mesa_init_shader(struct gl_context *ctx, struct gl_shader *shader);
 extern struct gl_shader *
 _mesa_new_shader(struct gl_context *ctx, GLuint name, gl_shader_stage type);
 
+extern struct gl_linked_shader *
+_mesa_new_linked_shader(gl_shader_stage type);
+
 extern void
 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
 
+extern void
+_mesa_delete_linked_shader(struct gl_context *ctx,
+                           struct gl_linked_shader *sh);
+
 extern struct gl_shader_program *
 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);