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  1. /*
  2.  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
  3.  *                Joakim Sindholt <opensource@zhasha.com>
  4.  * Copyright 2009 Marek Olšák <maraeo@gmail.com>
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * on the rights to use, copy, modify, merge, publish, distribute, sub
  10.  * license, and/or sell copies of the Software, and to permit persons to whom
  11.  * the Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the next
  14.  * paragraph) shall be included in all copies or substantial portions of the
  15.  * Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  20.  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  21.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23.  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  24.  
  25. #ifndef R300_FS_H
  26. #define R300_FS_H
  27.  
  28. #include "pipe/p_state.h"
  29. #include "tgsi/tgsi_scan.h"
  30. #include "compiler/radeon_code.h"
  31. #include "r300_shader_semantics.h"
  32.  
  33. struct r300_fragment_shader_code {
  34.     struct rX00_fragment_program_code code;
  35.     struct tgsi_shader_info info;
  36.     struct r300_shader_semantics inputs;
  37.  
  38.     /* Whether the shader was replaced by a dummy one due to a shader
  39.      * compilation failure. */
  40.     boolean dummy;
  41.  
  42.     /* Numbers of constants for each type. */
  43.     unsigned externals_count;
  44.     unsigned immediates_count;
  45.     unsigned rc_state_count;
  46.  
  47.     /* Registers for fragment depth output setup. */
  48.     uint32_t fg_depth_src;      /* R300_FG_DEPTH_SRC: 0x4bd8 */
  49.     uint32_t us_out_w;          /* R300_US_W_FMT:     0x46b4 */
  50.  
  51.     struct r300_fragment_program_external_state compare_state;
  52.  
  53.     unsigned cb_code_size;
  54.     uint32_t *cb_code;
  55.  
  56.     struct r300_fragment_shader_code* next;
  57.  
  58.     boolean write_all;
  59.  
  60. };
  61.  
  62. struct r300_fragment_shader {
  63.     /* Parent class */
  64.     struct pipe_shader_state state;
  65.  
  66.     /* Currently-bound fragment shader. */
  67.     struct r300_fragment_shader_code* shader;
  68.  
  69.     /* List of the same shaders compiled with different texture-compare
  70.      * states. */
  71.     struct r300_fragment_shader_code* first;
  72. };
  73.  
  74. void r300_shader_read_fs_inputs(struct tgsi_shader_info* info,
  75.                                 struct r300_shader_semantics* fs_inputs);
  76.  
  77. /* Return TRUE if the shader was switched and should be re-emitted. */
  78. boolean r300_pick_fragment_shader(struct r300_context* r300);
  79.  
  80. static INLINE boolean r300_fragment_shader_writes_depth(struct r300_fragment_shader *fs)
  81. {
  82.     if (!fs)
  83.         return FALSE;
  84.     return (fs->shader->code.writes_depth) ? TRUE : FALSE;
  85. }
  86.  
  87. static INLINE boolean r300_fragment_shader_writes_all(struct r300_fragment_shader *fs)
  88. {
  89.     if (!fs)
  90.         return FALSE;
  91.     return (fs->shader->write_all) ? TRUE : FALSE;
  92. }
  93. #endif /* R300_FS_H */
  94.