| 0,0 → 1,91 |
|---|
| /* |
| * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org> |
| * |
| * 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 |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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. |
| * |
| * Authors: |
| * Rob Clark <robclark@freedesktop.org> |
| */ |
| |
| #ifndef TGSI_LOWERING_H_ |
| #define TGSI_LOWERING_H_ |
| |
| #include "pipe/p_shader_tokens.h" |
| #include "tgsi/tgsi_scan.h" |
| |
| struct tgsi_lowering_config |
| { |
| /* For fragment shaders, generate a shader that emulates two |
| * sided color by inserting a BGCOLOR input for each COLOR |
| * input, and insert a CMP instruction to select the correct |
| * color to use based on the TGSI_SEMANTIC_FACE input. |
| * |
| * Note that drivers which use this to emulate two sided color |
| * will: |
| * a) need to generate (on demand) alternate shaders to use |
| * depending on the rasterizer state (ie. whether two |
| * sided shading enabled) |
| * b) expect to see the BGCOLOR semantic name in fragment |
| * shaders. During linkage, the driver should simply |
| * map VS.OUT.BGCOLOR[n] to FS.IN.BGCOLOR[n] (in the |
| * same was as linking other outs/ins). |
| */ |
| unsigned color_two_side:1; |
| |
| /* TODO support for alpha_to_one as well?? */ |
| |
| /* Individual OPC lowerings, if lower_<opc> is TRUE then |
| * enable lowering of TGSI_OPCODE_<opc> |
| */ |
| unsigned lower_DST:1; |
| unsigned lower_XPD:1; |
| unsigned lower_SCS:1; |
| unsigned lower_LRP:1; |
| unsigned lower_FRC:1; |
| unsigned lower_POW:1; |
| unsigned lower_LIT:1; |
| unsigned lower_EXP:1; |
| unsigned lower_LOG:1; |
| unsigned lower_DP4:1; |
| unsigned lower_DP3:1; |
| unsigned lower_DPH:1; |
| unsigned lower_DP2:1; |
| unsigned lower_DP2A:1; |
| |
| /* bitmask of (1 << TGSI_TEXTURE_type): */ |
| unsigned lower_TXP; |
| |
| /* To emulate certain texture wrap modes, this can be used |
| * to saturate the specified tex coord to [0.0, 1.0]. The |
| * bits are according to sampler #, ie. if, for example: |
| * |
| * (conf->saturate_s & (1 << n)) |
| * |
| * is true, then the s coord for sampler n is saturated. |
| */ |
| unsigned saturate_s, saturate_t, saturate_r; |
| }; |
| |
| const struct tgsi_token * |
| tgsi_transform_lowering(const struct tgsi_lowering_config *config, |
| const struct tgsi_token *tokens, |
| struct tgsi_shader_info *info); |
| |
| #endif /* FREEDRENO_LOWERING_H_ */ |