Reviewed-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
On 06/26/2017 04:09 PM, Nicolai Hähnle wrote:
From: Nicolai Hähnle <nicolai.haeh...@amd.com> --- src/gallium/auxiliary/tgsi/tgsi_from_mesa.c | 35 +++++++++++++++++++++++++++++ src/gallium/auxiliary/tgsi/tgsi_from_mesa.h | 5 +++++ 2 files changed, 40 insertions(+) diff --git a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c index 44fae1c..b7a21f2 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c +++ b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c @@ -141,10 +141,45 @@ tgsi_get_gl_varying_semantic(gl_varying_slot attr, case VARYING_SLOT_VAR0: default: assert(attr >= VARYING_SLOT_VAR0 || (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7)); *semantic_name = TGSI_SEMANTIC_GENERIC; *semantic_index = tgsi_get_generic_gl_varying_index(attr, needs_texcoord_semantic); break; } } + +/** + * Determine the semantic name and index used for the given fragment shader + * result. + */ +void +tgsi_get_gl_frag_result_semantic(gl_frag_result frag_result, + unsigned *semantic_name, + unsigned *semantic_index) +{ + if (frag_result >= FRAG_RESULT_DATA0) { + *semantic_name = TGSI_SEMANTIC_COLOR; + *semantic_index = frag_result - FRAG_RESULT_DATA0; + return; + } + + *semantic_index = 0; + + switch (frag_result) { + case FRAG_RESULT_DEPTH: + *semantic_name = TGSI_SEMANTIC_POSITION; + break; + case FRAG_RESULT_STENCIL: + *semantic_name = TGSI_SEMANTIC_STENCIL; + break; + case FRAG_RESULT_COLOR: + *semantic_name = TGSI_SEMANTIC_COLOR; + break; + case FRAG_RESULT_SAMPLE_MASK: + *semantic_name = TGSI_SEMANTIC_SAMPLEMASK; + break; + default: + assert(false); + } +} diff --git a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.h b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.h index d0f211e..bfaa48d 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.h +++ b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.h @@ -35,20 +35,25 @@ void tgsi_get_gl_varying_semantic(gl_varying_slot attr, bool needs_texcoord_semantic, unsigned *semantic_name, unsigned *semantic_index);unsignedtgsi_get_generic_gl_varying_index(gl_varying_slot attr, bool needs_texcoord_semantic);+void+tgsi_get_gl_frag_result_semantic(gl_frag_result frag_result, + unsigned *semantic_name, + unsigned *semantic_index); + static inline enum pipe_shader_type pipe_shader_type_from_mesa(gl_shader_stage stage) { switch (stage) { case MESA_SHADER_VERTEX: return PIPE_SHADER_VERTEX; case MESA_SHADER_TESS_CTRL: return PIPE_SHADER_TESS_CTRL; case MESA_SHADER_TESS_EVAL: return PIPE_SHADER_TESS_EVAL;
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