Yes. nvc0+ (fermi+) has fp64 support [and the G200 chip also has a bunch, tbd whether we'll bother supporting it]. radeon si/cik also has it. Only some r600 eg/ni-based cards have hw support (generally speaking, the higher end ones), the rest will have to emulate it. I believe that intel gen7 (ivb) and later have enough to make it happen too.
On Sun, Feb 8, 2015 at 3:21 PM, Aditya Avinash <adityaavina...@gmail.com> wrote: > Interesting... Does the actual hardware support double? (atleast for nv0) > Thank you! > > On Sun, Feb 8, 2015 at 12:20 PM, Ilia Mirkin <imir...@alum.mit.edu> wrote: >> >> It all works fine on nvc0 and softpipe with my branch at >> >> https://github.com/imirkin/mesa/commits/fp64-4 >> >> This branch also includes Dave's preliminary work on r600/cayman, not >> sure how far along it is, I believe it's still missing a few things. >> The nvc0 implementation needs a few more finishing touches for >> handling RCP and RSQ better (just adding a couple of steps of >> Newton-Raphson, since the hw only computes 32 bits of the 64-bit >> result). >> >> >> On Sun, Feb 8, 2015 at 12:04 PM, Aditya Avinash >> <adityaavina...@gmail.com> wrote: >> > Hi, >> > How far is glsl compiler working for fp64 shader? >> > >> > On Sun, Feb 8, 2015 at 4:00 AM, Ilia Mirkin <imir...@alum.mit.edu> >> > wrote: >> >> >> >> From: Dave Airlie <airl...@redhat.com> >> >> >> >> v2: add define bit (Tapani Pälli) >> >> >> >> Patch makes following Piglit tests pass: >> >> arb_gpu_shader_fp64/preprocessor/define.vert >> >> arb_gpu_shader_fp64/preprocessor/define.frag >> >> >> >> Reviewed-by: Ian Romanick <ian.d.roman...@intel.com> >> >> Signed-off-by: Dave Airlie <airl...@redhat.com> >> >> Reviewed-by: Matt Turner <matts...@gmail.com> >> >> --- >> >> src/glsl/glcpp/glcpp-parse.y | 3 +++ >> >> src/glsl/glsl_parser_extras.cpp | 1 + >> >> src/glsl/glsl_parser_extras.h | 2 ++ >> >> src/glsl/standalone_scaffolding.cpp | 1 + >> >> 4 files changed, 7 insertions(+) >> >> >> >> diff --git a/src/glsl/glcpp/glcpp-parse.y >> >> b/src/glsl/glcpp/glcpp-parse.y >> >> index e5bebe5..c2f5223 100644 >> >> --- a/src/glsl/glcpp/glcpp-parse.y >> >> +++ b/src/glsl/glcpp/glcpp-parse.y >> >> @@ -2445,6 +2445,9 @@ >> >> _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, >> >> intmax_t >> >> versio >> >> if (extensions->ARB_gpu_shader5) >> >> add_builtin_define(parser, "GL_ARB_gpu_shader5", 1); >> >> >> >> + if (extensions->ARB_gpu_shader_fp64) >> >> + add_builtin_define(parser, "GL_ARB_gpu_shader_fp64", >> >> 1); >> >> + >> >> if (extensions->AMD_vertex_shader_layer) >> >> add_builtin_define(parser, >> >> "GL_AMD_vertex_shader_layer", >> >> 1); >> >> >> >> diff --git a/src/glsl/glsl_parser_extras.cpp >> >> b/src/glsl/glsl_parser_extras.cpp >> >> index ccdf031..cb19ce1 100644 >> >> --- a/src/glsl/glsl_parser_extras.cpp >> >> +++ b/src/glsl/glsl_parser_extras.cpp >> >> @@ -527,6 +527,7 @@ static const _mesa_glsl_extension >> >> _mesa_glsl_supported_extensions[] = { >> >> EXT(ARB_fragment_coord_conventions, true, false, >> >> ARB_fragment_coord_conventions), >> >> EXT(ARB_fragment_layer_viewport, true, false, >> >> ARB_fragment_layer_viewport), >> >> EXT(ARB_gpu_shader5, true, false, >> >> ARB_gpu_shader5), >> >> + EXT(ARB_gpu_shader_fp64, true, false, >> >> ARB_gpu_shader_fp64), >> >> EXT(ARB_sample_shading, true, false, >> >> ARB_sample_shading), >> >> EXT(ARB_separate_shader_objects, true, false, dummy_true), >> >> EXT(ARB_shader_atomic_counters, true, false, >> >> ARB_shader_atomic_counters), >> >> diff --git a/src/glsl/glsl_parser_extras.h >> >> b/src/glsl/glsl_parser_extras.h >> >> index 843fdae..dafee4e 100644 >> >> --- a/src/glsl/glsl_parser_extras.h >> >> +++ b/src/glsl/glsl_parser_extras.h >> >> @@ -414,6 +414,8 @@ struct _mesa_glsl_parse_state { >> >> bool ARB_fragment_layer_viewport_warn; >> >> bool ARB_gpu_shader5_enable; >> >> bool ARB_gpu_shader5_warn; >> >> + bool ARB_gpu_shader_fp64_enable; >> >> + bool ARB_gpu_shader_fp64_warn; >> >> bool ARB_sample_shading_enable; >> >> bool ARB_sample_shading_warn; >> >> bool ARB_separate_shader_objects_enable; >> >> diff --git a/src/glsl/standalone_scaffolding.cpp >> >> b/src/glsl/standalone_scaffolding.cpp >> >> index 67b0d0c..ad0d75b 100644 >> >> --- a/src/glsl/standalone_scaffolding.cpp >> >> +++ b/src/glsl/standalone_scaffolding.cpp >> >> @@ -127,6 +127,7 @@ void initialize_context_to_defaults(struct >> >> gl_context >> >> *ctx, gl_api api) >> >> ctx->Extensions.ARB_fragment_coord_conventions = true; >> >> ctx->Extensions.ARB_fragment_layer_viewport = true; >> >> ctx->Extensions.ARB_gpu_shader5 = true; >> >> + ctx->Extensions.ARB_gpu_shader_fp64 = true; >> >> ctx->Extensions.ARB_sample_shading = true; >> >> ctx->Extensions.ARB_shader_bit_encoding = true; >> >> ctx->Extensions.ARB_shader_stencil_export = true; >> >> -- >> >> 2.0.5 >> >> >> >> _______________________________________________ >> >> mesa-dev mailing list >> >> mesa-dev@lists.freedesktop.org >> >> http://lists.freedesktop.org/mailman/listinfo/mesa-dev >> > >> > >> > >> > >> > -- >> > Regards, >> > Aditya Atluri, >> > USA. >> > > > > > > -- > Regards, > Aditya Atluri, > USA. > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
