| /* |
| * Copyright 2017 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include "tgsi/tgsi_from_mesa.h" |
| |
| #include "pipe/p_compiler.h" |
| |
| /** |
| * Determine the semantic index that is used when the given varying is mapped |
| * to TGSI_SEMANTIC_GENERIC. |
| */ |
| unsigned |
| tgsi_get_generic_gl_varying_index(gl_varying_slot attr, |
| bool needs_texcoord_semantic) |
| { |
| if (attr >= VARYING_SLOT_VAR0) { |
| if (needs_texcoord_semantic) |
| return attr - VARYING_SLOT_VAR0; |
| else |
| return 9 + (attr - VARYING_SLOT_VAR0); |
| } |
| if (attr == VARYING_SLOT_PNTC) { |
| assert(!needs_texcoord_semantic); |
| return 8; |
| } |
| if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) { |
| assert(!needs_texcoord_semantic); |
| return attr - VARYING_SLOT_TEX0; |
| } |
| |
| assert(0); |
| return 0; |
| } |
| |
| /** |
| * Determine the semantic name and index used for the given varying. |
| */ |
| void |
| tgsi_get_gl_varying_semantic(gl_varying_slot attr, |
| bool needs_texcoord_semantic, |
| unsigned *semantic_name, |
| unsigned *semantic_index) |
| { |
| switch (attr) { |
| case VARYING_SLOT_POS: |
| *semantic_name = TGSI_SEMANTIC_POSITION; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_COL0: |
| *semantic_name = TGSI_SEMANTIC_COLOR; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_COL1: |
| *semantic_name = TGSI_SEMANTIC_COLOR; |
| *semantic_index = 1; |
| break; |
| case VARYING_SLOT_BFC0: |
| *semantic_name = TGSI_SEMANTIC_BCOLOR; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_BFC1: |
| *semantic_name = TGSI_SEMANTIC_BCOLOR; |
| *semantic_index = 1; |
| break; |
| case VARYING_SLOT_FOGC: |
| *semantic_name = TGSI_SEMANTIC_FOG; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_PSIZ: |
| *semantic_name = TGSI_SEMANTIC_PSIZE; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_CLIP_DIST0: |
| *semantic_name = TGSI_SEMANTIC_CLIPDIST; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_CLIP_DIST1: |
| *semantic_name = TGSI_SEMANTIC_CLIPDIST; |
| *semantic_index = 1; |
| break; |
| case VARYING_SLOT_CULL_DIST0: |
| case VARYING_SLOT_CULL_DIST1: |
| /* these should have been lowered by GLSL */ |
| assert(0); |
| break; |
| case VARYING_SLOT_EDGE: |
| *semantic_name = TGSI_SEMANTIC_EDGEFLAG; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_CLIP_VERTEX: |
| *semantic_name = TGSI_SEMANTIC_CLIPVERTEX; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_LAYER: |
| *semantic_name = TGSI_SEMANTIC_LAYER; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_VIEWPORT: |
| *semantic_name = TGSI_SEMANTIC_VIEWPORT_INDEX; |
| *semantic_index = 0; |
| break; |
| case VARYING_SLOT_PNTC: |
| *semantic_name = TGSI_SEMANTIC_PCOORD; |
| *semantic_index = 0; |
| break; |
| |
| case VARYING_SLOT_TEX0: |
| case VARYING_SLOT_TEX1: |
| case VARYING_SLOT_TEX2: |
| case VARYING_SLOT_TEX3: |
| case VARYING_SLOT_TEX4: |
| case VARYING_SLOT_TEX5: |
| case VARYING_SLOT_TEX6: |
| case VARYING_SLOT_TEX7: |
| if (needs_texcoord_semantic) { |
| *semantic_name = TGSI_SEMANTIC_TEXCOORD; |
| *semantic_index = attr - VARYING_SLOT_TEX0; |
| break; |
| } |
| /* fall through */ |
| 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); |
| } |
| } |