mesa/glsl: build list of program resources during linking

Patch adds ProgramResourceList to gl_shader_program structure.
List contains references to active program resources and is
constructed during linking phase.

This list will be used by follow-up patches to implement hooks
for GL_ARB_program_interface_query. It can be also used to
implement any of the older shader program query APIs.

v2: code cleanups + note for SSBO and subroutines (Ilia Mirkin)
v3: code cleanups + assert(MESA_SHADER_STAGES < 8) (Martin Peres)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
index d7620c8..e428960 100644
--- a/src/mesa/main/shaderobj.c
+++ b/src/mesa/main/shaderobj.c
@@ -315,6 +315,12 @@ _mesa_clear_shader_program_data(struct gl_shader_program *shProg)
    ralloc_free(shProg->AtomicBuffers);
    shProg->AtomicBuffers = NULL;
    shProg->NumAtomicBuffers = 0;
+
+   if (shProg->ProgramResourceList) {
+      ralloc_free(shProg->ProgramResourceList);
+      shProg->ProgramResourceList = NULL;
+      shProg->NumProgramResourceList = 0;
+   }
 }