On Nov 30, 2016 7:17 AM, "Lionel Landwerlin" <<a href="mailto:lionel.g.landwerlin@intel.com">lionel.g.landwerlin@intel.com</a>> wrote: > > On 22/11/16 21:53, Plamena Manolova wrote: >> >> This extension allows the fragment shader to control whether values in >> gl_SampleMaskIn[] reflect the coverage after application of the early >> depth and stencil tests. >> >> Signed-off-by: Plamena Manolova <<a href="mailto:plamena.manolova@intel.com">plamena.manolova@intel.com</a>> >> --- >> src/compiler/glsl/ast.h | 5 +++++ >> src/compiler/glsl/ast_to_hir.cpp | 5 +++++ >> src/compiler/glsl/ast_type.cpp | 8 +++++++- >> src/compiler/glsl/glsl_parser.yy | 11 +++++++++++ >> src/compiler/glsl/glsl_parser_extras.cpp | 4 ++++ >> src/compiler/glsl/glsl_parser_extras.h | 4 ++++ >> src/compiler/glsl/linker.cpp | 4 ++++ >> src/compiler/shader_info.h | 1 + >> src/mesa/main/extensions_table.h | 1 + >> src/mesa/main/mtypes.h | 2 ++ >> src/mesa/main/shaderapi.c | 1 + >> 11 files changed, 45 insertions(+), 1 deletion(-) >> >> diff --git a/src/compiler/glsl/ast.h b/src/compiler/glsl/ast.h >> index 55f9a6c..ad19493 100644 >> --- a/src/compiler/glsl/ast.h >> +++ b/src/compiler/glsl/ast.h >> @@ -606,6 +606,11 @@ struct ast_type_qualifier { >> /** \{ */ >> unsigned blend_support:1; /**< Are there any blend_support_ qualifiers */ >> /** \} */ >> + >> + /** >> + * Flag set if GL_ARB_post_depth_coverage layout qualifier is used. >> + */ >> + unsigned post_depth_coverage:1; >> } >> /** \brief Set of flags, accessed by name. */ >> q; >> diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp >> index 9b8678c..c31da86 100644 >> --- a/src/compiler/glsl/ast_to_hir.cpp >> +++ b/src/compiler/glsl/ast_to_hir.cpp >> @@ -3632,6 +3632,11 @@ apply_layout_qualifier_to_variable(const struct ast_type_qualifier *qual, >> _mesa_glsl_error(loc, state, "early_fragment_tests layout qualifier only " >> "valid in fragment shader input layout declaration."); >> } >> + >> + if (qual->flags.q.post_depth_coverage) { >> + _mesa_glsl_error(loc, state, "post_depth_coverage layout qualifier only " >> + "valid in fragment shader input layout declaration."); >> + } >> } >> static void >> diff --git a/src/compiler/glsl/ast_type.cpp b/src/compiler/glsl/ast_type.cpp >> index 2856f18..1905721 100644 >> --- a/src/compiler/glsl/ast_type.cpp >> +++ b/src/compiler/glsl/ast_type.cpp >> @@ -489,6 +489,7 @@ ast_type_qualifier::merge_in_qualifier(YYLTYPE *loc, >> break; >> case MESA_SHADER_FRAGMENT: >> valid_in_mask.flags.q.early_fragment_tests = 1; >> + valid_in_mask.flags.q.post_depth_coverage = 1; >> break; >> case MESA_SHADER_COMPUTE: >> create_cs_ast |= >> @@ -540,6 +541,10 @@ ast_type_qualifier::merge_in_qualifier(YYLTYPE *loc, >> state->fs_early_fragment_tests = true; >> } >> + if (q.flags.q.post_depth_coverage) { >> + state->fs_post_depth_coverage = true; >> + } >> + >> if (this->flags.q.vertex_spacing) { >> if (q.flags.q.vertex_spacing && >> this->vertex_spacing != q.vertex_spacing) { >> @@ -671,7 +676,8 @@ ast_type_qualifier::validate_flags(YYLTYPE *loc, >> bad.flags.q.point_mode ? " point_mode" : "", >> bad.flags.q.vertices ? " vertices" : "", >> bad.flags.q.subroutine ? " subroutine" : "", >> - bad.flags.q.subroutine_def ? " subroutine_def" : ""); >> + bad.flags.q.subroutine_def ? " subroutine_def" : "", >> + bad.flags.q.post_depth_coverage ? " post_depth_coverage" : ""); >> return false; >> } >> diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy >> index a48dc68..a53f476 100644 >> --- a/src/compiler/glsl/glsl_parser.yy >> +++ b/src/compiler/glsl/glsl_parser.yy >> @@ -1373,6 +1373,17 @@ layout_qualifier_id: >> $$.flags.q.early_fragment_tests = 1; >> } > > > I wonder if the following check should include state-> ARB_post_depth_coverage_enable as condition before matching the layout qualifier. > Maybe Ilia can confirm? Sounds right. A shader without the enable but wit the layout qualifier should fail to compile. There should be a test in piglit to that effect with glslparsertest. > > Thanks! > > >> + >> + if (!$$.flags.i && >> + match_layout_qualifier($1, "post_depth_coverage", state) == 0) { >> + if (state->stage != MESA_SHADER_FRAGMENT) { >> + _mesa_glsl_error(& @1, state, >> + "post_depth_coverage layout qualifier only " >> + "valid in fragment shaders"); >> + } >> + >> + $$.flags.q.post_depth_coverage = 1; >> + } >> } >> /* Layout qualifiers for tessellation evaluation shaders. */ >> diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp >> index 85a2e94..bc252a0 100644 >> --- a/src/compiler/glsl/glsl_parser_extras.cpp >> +++ b/src/compiler/glsl/glsl_parser_extras.cpp >> @@ -295,6 +295,7 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx, >> this->in_qualifier = new(this) ast_type_qualifier(); >> this->out_qualifier = new(this) ast_type_qualifier(); >> this->fs_early_fragment_tests = false; >> + this->fs_post_depth_coverage = false; >> this->fs_blend_support = 0; >> memset(this->atomic_counter_offsets, 0, >> sizeof(this->atomic_counter_offsets)); >> @@ -608,6 +609,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = { >> EXT(ARB_fragment_layer_viewport), >> EXT(ARB_gpu_shader5), >> EXT(ARB_gpu_shader_fp64), >> + EXT(ARB_post_depth_coverage), >> EXT(ARB_sample_shading), >> EXT(ARB_separate_shader_objects), >> EXT(ARB_shader_atomic_counter_ops), >> @@ -1692,6 +1694,7 @@ set_shader_inout_layout(struct gl_shader *shader, >> assert(!state->fs_pixel_center_integer); >> assert(!state->fs_origin_upper_left); >> assert(!state->fs_early_fragment_tests); >> + assert(!state->fs_post_depth_coverage); >> } >> for (unsigned i = 0; i < MAX_FEEDBACK_BUFFERS; i++) { >> @@ -1812,6 +1815,7 @@ set_shader_inout_layout(struct gl_shader *shader, >> shader->info.ARB_fragment_coord_conventions_enable = >> state->ARB_fragment_coord_conventions_enable; >> shader->info.EarlyFragmentTests = state->fs_early_fragment_tests; >> + shader->info.PostDepthCoverage = state->fs_post_depth_coverage; >> shader->info.BlendSupport = state->fs_blend_support; >> break; >> diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h >> index d757c1d..4277d43 100644 >> --- a/src/compiler/glsl/glsl_parser_extras.h >> +++ b/src/compiler/glsl/glsl_parser_extras.h >> @@ -610,6 +610,8 @@ struct _mesa_glsl_parse_state { >> bool ARB_gpu_shader5_warn; >> bool ARB_gpu_shader_fp64_enable; >> bool ARB_gpu_shader_fp64_warn; >> + bool ARB_post_depth_coverage_enable; >> + bool ARB_post_depth_coverage_warn; >> bool ARB_sample_shading_enable; >> bool ARB_sample_shading_warn; >> bool ARB_separate_shader_objects_enable; >> @@ -786,6 +788,8 @@ struct _mesa_glsl_parse_state { >> bool fs_early_fragment_tests; >> + bool fs_post_depth_coverage; >> + >> unsigned fs_blend_support; >> /** >> diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp >> index 1a00a90..d127d0c 100644 >> --- a/src/compiler/glsl/linker.cpp >> +++ b/src/compiler/glsl/linker.cpp >> @@ -1887,6 +1887,10 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog, >> linked_shader->info.EarlyFragmentTests |= >> shader->info.EarlyFragmentTests; >> + >> + linked_shader->info.PostDepthCoverage |= >> + shader->info.PostDepthCoverage; >> + >> linked_shader->info.BlendSupport |= shader->info.BlendSupport; >> } >> } >> diff --git a/src/compiler/shader_info.h b/src/compiler/shader_info.h >> index 7ea5d9c..b2830e0 100644 >> --- a/src/compiler/shader_info.h >> +++ b/src/compiler/shader_info.h >> @@ -116,6 +116,7 @@ typedef struct shader_info { >> * ARB_shader_image_load_store. >> */ >> bool early_fragment_tests; >> + bool post_depth_coverage; >> /** gl_FragDepth layout for ARB_conservative_depth. */ >> enum gl_frag_depth_layout depth_layout; >> diff --git a/src/mesa/main/extensions_table.h b/src/mesa/main/extensions_table.h >> index d3ec551..f2d3a5b 100644 >> --- a/src/mesa/main/extensions_table.h >> +++ b/src/mesa/main/extensions_table.h >> @@ -93,6 +93,7 @@ EXT(ARB_pipeline_statistics_query , ARB_pipeline_statistics_query >> EXT(ARB_pixel_buffer_object , EXT_pixel_buffer_object , GLL, GLC, x , x , 2004) >> EXT(ARB_point_parameters , EXT_point_parameters , GLL, x , x , x , 1997) >> EXT(ARB_point_sprite , ARB_point_sprite , GLL, GLC, x , x , 2003) >> +EXT(ARB_post_depth_coverage , ARB_post_depth_coverage , x , 32, x , x, 2015) >> EXT(ARB_program_interface_query , dummy_true , GLL, GLC, x , x , 2012) >> EXT(ARB_provoking_vertex , EXT_provoking_vertex , GLL, GLC, x , x , 2009) >> EXT(ARB_query_buffer_object , ARB_query_buffer_object , GLL, GLC, x , x , 2013) >> diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h >> index 26b1965..9d50304 100644 >> --- a/src/mesa/main/mtypes.h >> +++ b/src/mesa/main/mtypes.h >> @@ -2174,6 +2174,7 @@ struct gl_shader_info >> { >> bool uses_gl_fragcoord; >> bool redeclares_gl_fragcoord; >> + bool PostDepthCoverage; >> bool ARB_fragment_coord_conventions_enable; >> /** >> @@ -3815,6 +3816,7 @@ struct gl_extensions >> GLboolean ARB_occlusion_query2; >> GLboolean ARB_pipeline_statistics_query; >> GLboolean ARB_point_sprite; >> + GLboolean ARB_post_depth_coverage; >> GLboolean ARB_query_buffer_object; >> GLboolean ARB_robust_buffer_access_behavior; >> GLboolean ARB_sample_shading; >> diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c >> index 83ee0d4..33e4334 100644 >> --- a/src/mesa/main/shaderapi.c >> +++ b/src/mesa/main/shaderapi.c >> @@ -2194,6 +2194,7 @@ _mesa_copy_linked_program_data(const struct gl_shader_program *src, >> case MESA_SHADER_FRAGMENT: { >> dst->info.fs.depth_layout = src->FragDepthLayout; >> dst->info.fs.early_fragment_tests = dst_sh->info.EarlyFragmentTests; >> + dst->info.fs.post_depth_coverage = dst_sh->info.PostDepthCoverage; >> break; >> } >> case MESA_SHADER_COMPUTE: { > > >