1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 2012-2013 LunarG, Inc. 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Chia-I Wu <olv (at) lunarg.com> 26 */ 27 28 #ifndef ILO_FORMAT_H 29 #define ILO_FORMAT_H 30 31 #include "genhw/genhw.h" 32 33 #include "ilo_common.h" 34 35 bool 36 ilo_format_support_vb(const struct ilo_dev *dev, 37 enum pipe_format format); 38 39 bool 40 ilo_format_support_sol(const struct ilo_dev *dev, 41 enum pipe_format format); 42 43 bool 44 ilo_format_support_sampler(const struct ilo_dev *dev, 45 enum pipe_format format); 46 47 bool 48 ilo_format_support_rt(const struct ilo_dev *dev, 49 enum pipe_format format); 50 51 bool 52 ilo_format_support_zs(const struct ilo_dev *dev, 53 enum pipe_format format); 54 55 int 56 ilo_format_translate_color(const struct ilo_dev *dev, 57 enum pipe_format format); 58 59 /** 60 * Translate a pipe format to a hardware surface format suitable for 61 * the given purpose. Return -1 on errors. 62 * 63 * This is an inline function not only for performance reasons. There are 64 * caveats that the callers should be aware of before calling this function. 65 */ 66 static inline int 67 ilo_format_translate(const struct ilo_dev *dev, 68 enum pipe_format format, unsigned bind) 69 { 70 switch (bind) { 71 case PIPE_BIND_RENDER_TARGET: 72 /* 73 * Some RGBX formats are not supported as render target formats. But we 74 * can use their RGBA counterparts and force the destination alpha to be 75 * one when blending is enabled. 76 */ 77 switch (format) { 78 case PIPE_FORMAT_B8G8R8X8_UNORM: 79 return GEN6_FORMAT_B8G8R8A8_UNORM; 80 default: 81 return ilo_format_translate_color(dev, format); 82 } 83 break; 84 case PIPE_BIND_SAMPLER_VIEW: 85 /* 86 * For depth formats, we want the depth values to be returned as R 87 * values. But we assume in many places that the depth values are 88 * returned as I values (util_make_fragment_tex_shader_writedepth() is 89 * one such example). We have to live with that at least for now. 90 * 91 * For ETC1 format, the texture data will be decompressed before being 92 * written to the bo. See tex_staging_sys_convert_write(). 93 */ 94 switch (format) { 95 case PIPE_FORMAT_Z16_UNORM: 96 return GEN6_FORMAT_I16_UNORM; 97 case PIPE_FORMAT_Z32_FLOAT: 98 return GEN6_FORMAT_I32_FLOAT; 99 case PIPE_FORMAT_Z24X8_UNORM: 100 case PIPE_FORMAT_Z24_UNORM_S8_UINT: 101 return GEN6_FORMAT_I24X8_UNORM; 102 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT: 103 return GEN6_FORMAT_I32X32_FLOAT; 104 case PIPE_FORMAT_ETC1_RGB8: 105 return GEN6_FORMAT_R8G8B8X8_UNORM; 106 default: 107 return ilo_format_translate_color(dev, format); 108 } 109 break; 110 case PIPE_BIND_VERTEX_BUFFER: 111 if (ilo_dev_gen(dev) >= ILO_GEN(7.5)) 112 return ilo_format_translate_color(dev, format); 113 114 /* 115 * Some 3-component formats are not supported as vertex element formats. 116 * But since we move between vertices using vb->stride, we should be 117 * good to use their 4-component counterparts if we force the W 118 * component to be one. The only exception is that the vb boundary 119 * check for the last vertex may fail. 120 */ 121 switch (format) { 122 case PIPE_FORMAT_R16G16B16_FLOAT: 123 return GEN6_FORMAT_R16G16B16A16_FLOAT; 124 case PIPE_FORMAT_R16G16B16_UINT: 125 return GEN6_FORMAT_R16G16B16A16_UINT; 126 case PIPE_FORMAT_R16G16B16_SINT: 127 return GEN6_FORMAT_R16G16B16A16_SINT; 128 case PIPE_FORMAT_R8G8B8_UINT: 129 return GEN6_FORMAT_R8G8B8A8_UINT; 130 case PIPE_FORMAT_R8G8B8_SINT: 131 return GEN6_FORMAT_R8G8B8A8_SINT; 132 default: 133 return ilo_format_translate_color(dev, format); 134 } 135 break; 136 case PIPE_BIND_STREAM_OUTPUT: 137 return ilo_format_translate_color(dev, format); 138 break; 139 default: 140 assert(!"cannot translate format"); 141 break; 142 } 143 144 return -1; 145 } 146 147 static inline int 148 ilo_format_translate_render(const struct ilo_dev *dev, 149 enum pipe_format format) 150 { 151 return ilo_format_translate(dev, format, PIPE_BIND_RENDER_TARGET); 152 } 153 154 static inline int 155 ilo_format_translate_texture(const struct ilo_dev *dev, 156 enum pipe_format format) 157 { 158 return ilo_format_translate(dev, format, PIPE_BIND_SAMPLER_VIEW); 159 } 160 161 static inline int 162 ilo_format_translate_vertex(const struct ilo_dev *dev, 163 enum pipe_format format) 164 { 165 return ilo_format_translate(dev, format, PIPE_BIND_VERTEX_BUFFER); 166 } 167 168 static inline enum gen_depth_format 169 ilo_format_translate_depth(const struct ilo_dev *dev, 170 enum pipe_format format) 171 { 172 if (ilo_dev_gen(dev) >= ILO_GEN(7)) { 173 switch (format) { 174 case PIPE_FORMAT_Z32_FLOAT: 175 return GEN6_ZFORMAT_D32_FLOAT; 176 case PIPE_FORMAT_Z24X8_UNORM: 177 return GEN6_ZFORMAT_D24_UNORM_X8_UINT; 178 case PIPE_FORMAT_Z16_UNORM: 179 return GEN6_ZFORMAT_D16_UNORM; 180 default: 181 assert(!"unknown depth format"); 182 return GEN6_ZFORMAT_D32_FLOAT; 183 } 184 } else { 185 switch (format) { 186 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT: 187 return GEN6_ZFORMAT_D32_FLOAT_S8X24_UINT; 188 case PIPE_FORMAT_Z32_FLOAT: 189 return GEN6_ZFORMAT_D32_FLOAT; 190 case PIPE_FORMAT_Z24_UNORM_S8_UINT: 191 return GEN6_ZFORMAT_D24_UNORM_S8_UINT; 192 case PIPE_FORMAT_Z24X8_UNORM: 193 return GEN6_ZFORMAT_D24_UNORM_X8_UINT; 194 case PIPE_FORMAT_Z16_UNORM: 195 return GEN6_ZFORMAT_D16_UNORM; 196 default: 197 assert(!"unknown depth format"); 198 return GEN6_ZFORMAT_D32_FLOAT; 199 } 200 } 201 } 202 203 #endif /* ILO_FORMAT_H */ 204
