mesa: Add support for GL_EXT_shader_clock

Signed-off-by: Ashley Smith <ashley.smith@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35630>

src/compiler/glsl/builtin_functions.cpp

@@ -720,13 +720,15 @@ supports_nv_fragment_shader_interlock(const _mesa_glsl_parse_state *state)
 static bool
 shader_clock(const _mesa_glsl_parse_state *state)
 {
-   return state->ARB_shader_clock_enable;
+   return state->ARB_shader_clock_enable ||
+          state->EXT_shader_clock_enable;
 }
 
 static bool
 shader_clock_int64(const _mesa_glsl_parse_state *state)
 {
-   return state->ARB_shader_clock_enable &&
+   return (state->ARB_shader_clock_enable ||
+           state->EXT_shader_clock_enable) &&
           (state->ARB_gpu_shader_int64_enable ||
            state->AMD_gpu_shader_int64_enable);
 }

src/compiler/glsl/glsl_parser_extras.cpp

@@ -821,6 +821,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT_AEP(EXT_gpu_shader5),
    EXT_AEP(EXT_primitive_bounding_box),
    EXT(EXT_separate_shader_objects),
+   EXT(EXT_shader_clock),
    EXT(EXT_shader_framebuffer_fetch),
    EXT(EXT_shader_framebuffer_fetch_non_coherent),
    EXT(EXT_shader_group_vote),

src/compiler/glsl/glsl_parser_extras.h

@@ -880,6 +880,8 @@ struct _mesa_glsl_parse_state {
    bool EXT_primitive_bounding_box_warn;
    bool EXT_separate_shader_objects_enable;
    bool EXT_separate_shader_objects_warn;
+   bool EXT_shader_clock_enable;
+   bool EXT_shader_clock_warn;
    bool EXT_shader_framebuffer_fetch_enable;
    bool EXT_shader_framebuffer_fetch_warn;
    bool EXT_shader_framebuffer_fetch_non_coherent_enable;