mesa/cs: Implement MAX_COMPUTE_WORK_GROUP_INVOCATIONS constant.

Reviewed-by: Matt Turner <mattst88@gmail.com>

v2: Use CONTEXT_INT rather than CONTEXT_ENUM.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

src/glsl/main.cpp

@@ -53,6 +53,7 @@ initialize_context(struct gl_context *ctx, gl_api api)
    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
+   ctx->Const.MaxComputeWorkGroupInvocations = 1024;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */

src/glsl/standalone_scaffolding.cpp

@@ -144,6 +144,7 @@ void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
+   ctx->Const.MaxComputeWorkGroupInvocations = 1024;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */

src/mesa/main/context.c

@@ -705,6 +705,7 @@ _mesa_init_constants(struct gl_context *ctx)
    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
+   ctx->Const.MaxComputeWorkGroupInvocations = 1024;
 }
 
 

src/mesa/main/get.c

@@ -390,6 +390,7 @@ EXTRA_EXT(ARB_shader_atomic_counters);
 EXTRA_EXT(ARB_draw_indirect);
 EXTRA_EXT(ARB_shader_image_load_store);
 EXTRA_EXT(ARB_viewport_array);
+EXTRA_EXT(ARB_compute_shader);
 
 static const int
 extra_ARB_color_buffer_float_or_glcore[] = {

src/mesa/main/get_hash_params.py

@@ -751,6 +751,9 @@ descriptor=[
   [ "MAX_GEOMETRY_IMAGE_UNIFORMS", "CONTEXT_INT(Const.Program[MESA_SHADER_GEOMETRY].MaxImageUniforms), extra_ARB_shader_image_load_store_and_geometry_shader"],
   [ "MAX_FRAGMENT_IMAGE_UNIFORMS", "CONTEXT_INT(Const.Program[MESA_SHADER_FRAGMENT].MaxImageUniforms), extra_ARB_shader_image_load_store"],
   [ "MAX_COMBINED_IMAGE_UNIFORMS", "CONTEXT_INT(Const.MaxCombinedImageUniforms), extra_ARB_shader_image_load_store"],
+
+# GL_ARB_compute_shader
+  [ "MAX_COMPUTE_WORK_GROUP_INVOCATIONS", "CONTEXT_INT(Const.MaxComputeWorkGroupInvocations), extra_ARB_compute_shader" ],
 ]},
 
 # Enums restricted to OpenGL Core profile

src/mesa/main/mtypes.h

@@ -3381,6 +3381,7 @@ struct gl_constants
 
    /** GL_ARB_compute_shader */
    GLuint MaxComputeWorkGroupSize[3]; /* Array of x, y, z dimensions */
+   GLuint MaxComputeWorkGroupInvocations;
 };