[Mesa-dev] [PATCH 4/6] st/mesa: implement ARB_shader_clock

[Nicolai Hähnle]

From: Nicolai Hähnle <nicolai.haehnle at amd.com>

---
 src/mesa/state_tracker/st_extensions.c     |  1 +
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 16f8685..a48c22e 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -592,20 +592,21 @@ void st_init_extensions(struct pipe_screen *screen,
       { o(ARB_indirect_parameters),          PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS       },
       { o(ARB_instanced_arrays),             PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR  },
       { o(ARB_occlusion_query),              PIPE_CAP_OCCLUSION_QUERY                  },
       { o(ARB_occlusion_query2),             PIPE_CAP_OCCLUSION_QUERY                  },
       { o(ARB_pipeline_statistics_query),    PIPE_CAP_QUERY_PIPELINE_STATISTICS        },
       { o(ARB_point_sprite),                 PIPE_CAP_POINT_SPRITE                     },
       { o(ARB_query_buffer_object),          PIPE_CAP_QUERY_BUFFER_OBJECT              },
       { o(ARB_robust_buffer_access_behavior), PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR   },
       { o(ARB_sample_shading),               PIPE_CAP_SAMPLE_SHADING                   },
       { o(ARB_seamless_cube_map),            PIPE_CAP_SEAMLESS_CUBE_MAP                },
+      { o(ARB_shader_clock),                 PIPE_CAP_TGSI_CLOCK                       },
       { o(ARB_shader_draw_parameters),       PIPE_CAP_DRAW_PARAMETERS                  },
       { o(ARB_shader_group_vote),            PIPE_CAP_TGSI_VOTE                        },
       { o(ARB_shader_stencil_export),        PIPE_CAP_SHADER_STENCIL_EXPORT            },
       { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS                        },
       { o(ARB_shader_texture_lod),           PIPE_CAP_SM3                              },
       { o(ARB_shadow),                       PIPE_CAP_TEXTURE_SHADOW_MAP               },
       { o(ARB_texture_buffer_object),        PIPE_CAP_TEXTURE_BUFFER_OBJECTS           },
       { o(ARB_texture_cube_map_array),       PIPE_CAP_CUBE_MAP_ARRAY                   },
       { o(ARB_texture_gather),               PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS    },
       { o(ARB_texture_mirror_clamp_to_edge), PIPE_CAP_TEXTURE_MIRROR_CLAMP             },
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 63de74a..6e3bccd 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -3988,32 +3988,41 @@ glsl_to_tgsi_visitor::visit(ir_call *ir)
    case ir_intrinsic_image_atomic_and:
    case ir_intrinsic_image_atomic_or:
    case ir_intrinsic_image_atomic_xor:
    case ir_intrinsic_image_atomic_exchange:
    case ir_intrinsic_image_atomic_comp_swap:
    case ir_intrinsic_image_size:
    case ir_intrinsic_image_samples:
       visit_image_intrinsic(ir);
       return;
 
+   case ir_intrinsic_shader_clock: {
+      ir->return_deref->accept(this);
+
+      st_dst_reg dst = st_dst_reg(this->result);
+      dst.writemask = TGSI_WRITEMASK_XY;
+
+      emit_asm(ir, TGSI_OPCODE_CLOCK, dst);
+      return;
+   }
+
    case ir_intrinsic_invalid:
    case ir_intrinsic_generic_load:
    case ir_intrinsic_generic_store:
    case ir_intrinsic_generic_atomic_add:
    case ir_intrinsic_generic_atomic_and:
    case ir_intrinsic_generic_atomic_or:
    case ir_intrinsic_generic_atomic_xor:
    case ir_intrinsic_generic_atomic_min:
    case ir_intrinsic_generic_atomic_max:
    case ir_intrinsic_generic_atomic_exchange:
    case ir_intrinsic_generic_atomic_comp_swap:
-   case ir_intrinsic_shader_clock:
       unreachable("Invalid intrinsic");
    }
 }
 
 void
 glsl_to_tgsi_visitor::calc_deref_offsets(ir_dereference *tail,
                                          unsigned *array_elements,
                                          uint16_t *index,
                                          st_src_reg *indirect,
                                          unsigned *location)
-- 
2.9.3