Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | #include "glUtils.h" |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 17 | |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 18 | #include <string.h> |
| 19 | #include <GLES3/gl31.h> |
| 20 | |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 21 | #include "host-common/logging.h" |
| 22 | |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 23 | size_t glSizeof(GLenum type) |
| 24 | { |
| 25 | size_t retval = 0; |
| 26 | switch(type) { |
| 27 | case GL_BYTE: |
| 28 | case GL_UNSIGNED_BYTE: |
| 29 | retval = 1; |
| 30 | break; |
| 31 | case GL_SHORT: |
| 32 | case GL_UNSIGNED_SHORT: |
| 33 | case GL_HALF_FLOAT: |
| 34 | case GL_HALF_FLOAT_OES: |
| 35 | retval = 2; |
| 36 | break; |
| 37 | case GL_IMAGE_2D: |
| 38 | case GL_IMAGE_3D: |
| 39 | case GL_UNSIGNED_INT: |
| 40 | case GL_INT: |
| 41 | case GL_FLOAT: |
| 42 | case GL_FIXED: |
| 43 | case GL_BOOL: |
| 44 | retval = 4; |
| 45 | break; |
| 46 | #ifdef GL_DOUBLE |
| 47 | case GL_DOUBLE: |
| 48 | retval = 8; |
| 49 | break; |
| 50 | #endif |
| 51 | case GL_FLOAT_VEC2: |
| 52 | case GL_INT_VEC2: |
| 53 | case GL_UNSIGNED_INT_VEC2: |
| 54 | case GL_BOOL_VEC2: |
| 55 | retval = 8; |
| 56 | break; |
| 57 | case GL_INT_VEC3: |
| 58 | case GL_UNSIGNED_INT_VEC3: |
| 59 | case GL_BOOL_VEC3: |
| 60 | case GL_FLOAT_VEC3: |
| 61 | retval = 12; |
| 62 | break; |
| 63 | case GL_FLOAT_VEC4: |
| 64 | case GL_BOOL_VEC4: |
| 65 | case GL_INT_VEC4: |
| 66 | case GL_UNSIGNED_INT_VEC4: |
| 67 | case GL_FLOAT_MAT2: |
| 68 | retval = 16; |
| 69 | break; |
| 70 | case GL_FLOAT_MAT3: |
| 71 | retval = 36; |
| 72 | break; |
| 73 | case GL_FLOAT_MAT4: |
| 74 | retval = 64; |
| 75 | break; |
| 76 | case GL_FLOAT_MAT2x3: |
| 77 | case GL_FLOAT_MAT3x2: |
| 78 | retval = 4 * 6; |
| 79 | break; |
| 80 | case GL_FLOAT_MAT2x4: |
| 81 | case GL_FLOAT_MAT4x2: |
| 82 | retval = 4 * 8; |
| 83 | break; |
| 84 | case GL_FLOAT_MAT3x4: |
| 85 | case GL_FLOAT_MAT4x3: |
| 86 | retval = 4 * 12; |
| 87 | break; |
| 88 | case GL_SAMPLER_2D: |
| 89 | case GL_SAMPLER_3D: |
| 90 | case GL_SAMPLER_CUBE: |
| 91 | case GL_SAMPLER_2D_SHADOW: |
| 92 | case GL_SAMPLER_2D_ARRAY: |
| 93 | case GL_SAMPLER_2D_ARRAY_SHADOW: |
| 94 | case GL_SAMPLER_CUBE_SHADOW: |
| 95 | case GL_INT_SAMPLER_2D: |
| 96 | case GL_INT_SAMPLER_3D: |
| 97 | case GL_INT_SAMPLER_CUBE: |
| 98 | case GL_INT_SAMPLER_2D_ARRAY: |
| 99 | case GL_UNSIGNED_INT_SAMPLER_2D: |
| 100 | case GL_UNSIGNED_INT_SAMPLER_3D: |
| 101 | case GL_UNSIGNED_INT_SAMPLER_CUBE: |
| 102 | case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY: |
| 103 | retval = 4; |
| 104 | break; |
| 105 | case GL_UNSIGNED_SHORT_4_4_4_4: |
| 106 | case GL_UNSIGNED_SHORT_5_5_5_1: |
| 107 | case GL_UNSIGNED_SHORT_5_6_5: |
| 108 | case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT: |
| 109 | case GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT: |
| 110 | retval = 2; |
| 111 | break; |
| 112 | case GL_INT_2_10_10_10_REV: |
| 113 | case GL_UNSIGNED_INT_10F_11F_11F_REV: |
| 114 | case GL_UNSIGNED_INT_5_9_9_9_REV: |
| 115 | case GL_UNSIGNED_INT_2_10_10_10_REV: |
| 116 | case GL_UNSIGNED_INT_24_8_OES:; |
| 117 | retval = 4; |
| 118 | break; |
| 119 | case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: |
| 120 | retval = 4 + 4; |
| 121 | break; |
| 122 | default: |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 123 | ERR("**** ERROR unknown type 0x%x", type); |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 124 | retval = 4; |
| 125 | } |
| 126 | return retval; |
| 127 | |
| 128 | } |
| 129 | |
| 130 | size_t glUtilsParamSize(GLenum param) |
| 131 | { |
| 132 | size_t s = 0; |
| 133 | |
| 134 | switch(param) |
| 135 | { |
| 136 | case GL_DEPTH_TEST: |
| 137 | case GL_DEPTH_FUNC: |
| 138 | case GL_DEPTH_BITS: |
| 139 | case GL_MAX_CLIP_PLANES: |
| 140 | case GL_GREEN_BITS: |
| 141 | case GL_MAX_MODELVIEW_STACK_DEPTH: |
| 142 | case GL_MAX_PROJECTION_STACK_DEPTH: |
| 143 | case GL_MAX_TEXTURE_STACK_DEPTH: |
| 144 | case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES: |
| 145 | case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES: |
| 146 | case GL_NUM_COMPRESSED_TEXTURE_FORMATS: |
| 147 | case GL_MAX_TEXTURE_SIZE: |
| 148 | case GL_TEXTURE_GEN_MODE_OES: |
| 149 | case GL_TEXTURE_ENV_MODE: |
| 150 | case GL_FOG_MODE: |
| 151 | case GL_FOG_DENSITY: |
| 152 | case GL_FOG_START: |
| 153 | case GL_FOG_END: |
| 154 | case GL_SPOT_EXPONENT: |
| 155 | case GL_CONSTANT_ATTENUATION: |
| 156 | case GL_LINEAR_ATTENUATION: |
| 157 | case GL_QUADRATIC_ATTENUATION: |
| 158 | case GL_SHININESS: |
| 159 | case GL_LIGHT_MODEL_TWO_SIDE: |
| 160 | case GL_POINT_SIZE: |
| 161 | case GL_POINT_SIZE_MIN: |
| 162 | case GL_POINT_SIZE_MAX: |
| 163 | case GL_POINT_FADE_THRESHOLD_SIZE: |
| 164 | case GL_CULL_FACE_MODE: |
| 165 | case GL_FRONT_FACE: |
| 166 | case GL_SHADE_MODEL: |
| 167 | case GL_DEPTH_WRITEMASK: |
| 168 | case GL_DEPTH_CLEAR_VALUE: |
| 169 | case GL_STENCIL_FAIL: |
| 170 | case GL_STENCIL_PASS_DEPTH_FAIL: |
| 171 | case GL_STENCIL_PASS_DEPTH_PASS: |
| 172 | case GL_STENCIL_REF: |
| 173 | case GL_STENCIL_WRITEMASK: |
| 174 | case GL_MATRIX_MODE: |
| 175 | case GL_MODELVIEW_STACK_DEPTH: |
| 176 | case GL_PROJECTION_STACK_DEPTH: |
| 177 | case GL_TEXTURE_STACK_DEPTH: |
| 178 | case GL_ALPHA_TEST_FUNC: |
| 179 | case GL_ALPHA_TEST_REF: |
| 180 | case GL_ALPHA_TEST: |
| 181 | case GL_BLEND_DST: |
| 182 | case GL_BLEND_SRC: |
| 183 | case GL_BLEND: |
| 184 | case GL_LOGIC_OP_MODE: |
| 185 | case GL_SCISSOR_TEST: |
| 186 | case GL_MAX_TEXTURE_UNITS: |
| 187 | case GL_ACTIVE_TEXTURE: |
| 188 | case GL_ALPHA_BITS: |
| 189 | case GL_ARRAY_BUFFER_BINDING: |
| 190 | case GL_BLUE_BITS: |
| 191 | case GL_CLIENT_ACTIVE_TEXTURE: |
| 192 | case GL_CLIP_PLANE0: |
| 193 | case GL_CLIP_PLANE1: |
| 194 | case GL_CLIP_PLANE2: |
| 195 | case GL_CLIP_PLANE3: |
| 196 | case GL_CLIP_PLANE4: |
| 197 | case GL_CLIP_PLANE5: |
| 198 | case GL_COLOR_ARRAY: |
| 199 | case GL_COLOR_ARRAY_BUFFER_BINDING: |
| 200 | case GL_COLOR_ARRAY_SIZE: |
| 201 | case GL_COLOR_ARRAY_STRIDE: |
| 202 | case GL_COLOR_ARRAY_TYPE: |
| 203 | case GL_COLOR_LOGIC_OP: |
| 204 | case GL_COLOR_MATERIAL: |
| 205 | case GL_PACK_ALIGNMENT: |
| 206 | case GL_PERSPECTIVE_CORRECTION_HINT: |
| 207 | case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES: |
| 208 | case GL_POINT_SIZE_ARRAY_STRIDE_OES: |
| 209 | case GL_POINT_SIZE_ARRAY_TYPE_OES: |
| 210 | case GL_POINT_SMOOTH: |
| 211 | case GL_POINT_SMOOTH_HINT: |
| 212 | case GL_POINT_SPRITE_OES: |
| 213 | case GL_COORD_REPLACE_OES: |
| 214 | case GL_COMBINE_ALPHA: |
| 215 | case GL_SRC0_RGB: |
| 216 | case GL_SRC1_RGB: |
| 217 | case GL_SRC2_RGB: |
| 218 | case GL_OPERAND0_RGB: |
| 219 | case GL_OPERAND1_RGB: |
| 220 | case GL_OPERAND2_RGB: |
| 221 | case GL_SRC0_ALPHA: |
| 222 | case GL_SRC1_ALPHA: |
| 223 | case GL_SRC2_ALPHA: |
| 224 | case GL_OPERAND0_ALPHA: |
| 225 | case GL_OPERAND1_ALPHA: |
| 226 | case GL_OPERAND2_ALPHA: |
| 227 | case GL_RGB_SCALE: |
| 228 | case GL_ALPHA_SCALE: |
| 229 | case GL_COMBINE_RGB: |
| 230 | case GL_POLYGON_OFFSET_FACTOR: |
| 231 | case GL_POLYGON_OFFSET_FILL: |
| 232 | case GL_POLYGON_OFFSET_UNITS: |
| 233 | case GL_RED_BITS: |
| 234 | case GL_RESCALE_NORMAL: |
| 235 | case GL_SAMPLE_ALPHA_TO_COVERAGE: |
| 236 | case GL_SAMPLE_ALPHA_TO_ONE: |
| 237 | case GL_SAMPLE_BUFFERS: |
| 238 | case GL_SAMPLE_COVERAGE: |
| 239 | case GL_SAMPLE_COVERAGE_INVERT: |
| 240 | case GL_SAMPLE_COVERAGE_VALUE: |
| 241 | case GL_SAMPLES: |
| 242 | case GL_STENCIL_BITS: |
| 243 | case GL_STENCIL_CLEAR_VALUE: |
| 244 | case GL_STENCIL_FUNC: |
| 245 | case GL_STENCIL_TEST: |
| 246 | case GL_STENCIL_VALUE_MASK: |
| 247 | case GL_STENCIL_BACK_FUNC: |
| 248 | case GL_STENCIL_BACK_VALUE_MASK: |
| 249 | case GL_STENCIL_BACK_REF: |
| 250 | case GL_STENCIL_BACK_FAIL: |
| 251 | case GL_STENCIL_BACK_PASS_DEPTH_FAIL: |
| 252 | case GL_STENCIL_BACK_PASS_DEPTH_PASS: |
| 253 | case GL_STENCIL_BACK_WRITEMASK: |
| 254 | case GL_TEXTURE_2D: |
| 255 | case GL_TEXTURE_BINDING_2D: |
| 256 | case GL_TEXTURE_BINDING_CUBE_MAP: |
| 257 | case GL_TEXTURE_BINDING_EXTERNAL_OES: |
| 258 | case GL_TEXTURE_COORD_ARRAY: |
| 259 | case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING: |
| 260 | case GL_TEXTURE_COORD_ARRAY_SIZE: |
| 261 | case GL_TEXTURE_COORD_ARRAY_STRIDE: |
| 262 | case GL_TEXTURE_COORD_ARRAY_TYPE: |
| 263 | case GL_UNPACK_ALIGNMENT: |
| 264 | case GL_VERTEX_ARRAY: |
| 265 | case GL_VERTEX_ARRAY_BUFFER_BINDING: |
| 266 | case GL_VERTEX_ARRAY_SIZE: |
| 267 | case GL_VERTEX_ARRAY_STRIDE: |
| 268 | case GL_VERTEX_ARRAY_TYPE: |
| 269 | case GL_SPOT_CUTOFF: |
| 270 | case GL_TEXTURE_MIN_FILTER: |
| 271 | case GL_TEXTURE_MAG_FILTER: |
| 272 | case GL_TEXTURE_WRAP_S: |
| 273 | case GL_TEXTURE_WRAP_T: |
| 274 | case GL_GENERATE_MIPMAP: |
| 275 | case GL_GENERATE_MIPMAP_HINT: |
| 276 | case GL_RENDERBUFFER_WIDTH_OES: |
| 277 | case GL_RENDERBUFFER_HEIGHT_OES: |
| 278 | case GL_RENDERBUFFER_INTERNAL_FORMAT_OES: |
| 279 | case GL_RENDERBUFFER_RED_SIZE_OES: |
| 280 | case GL_RENDERBUFFER_GREEN_SIZE_OES: |
| 281 | case GL_RENDERBUFFER_BLUE_SIZE_OES: |
| 282 | case GL_RENDERBUFFER_ALPHA_SIZE_OES: |
| 283 | case GL_RENDERBUFFER_DEPTH_SIZE_OES: |
| 284 | case GL_RENDERBUFFER_STENCIL_SIZE_OES: |
| 285 | case GL_RENDERBUFFER_BINDING: |
| 286 | case GL_FRAMEBUFFER_BINDING: |
| 287 | case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_OES: |
| 288 | case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_OES: |
| 289 | case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_OES: |
| 290 | case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_OES: |
| 291 | case GL_FENCE_STATUS_NV: |
| 292 | case GL_FENCE_CONDITION_NV: |
| 293 | case GL_TEXTURE_WIDTH_QCOM: |
| 294 | case GL_TEXTURE_HEIGHT_QCOM: |
| 295 | case GL_TEXTURE_DEPTH_QCOM: |
| 296 | case GL_TEXTURE_INTERNAL_FORMAT_QCOM: |
| 297 | case GL_TEXTURE_FORMAT_QCOM: |
| 298 | case GL_TEXTURE_TYPE_QCOM: |
| 299 | case GL_TEXTURE_IMAGE_VALID_QCOM: |
| 300 | case GL_TEXTURE_NUM_LEVELS_QCOM: |
| 301 | case GL_TEXTURE_TARGET_QCOM: |
| 302 | case GL_TEXTURE_OBJECT_VALID_QCOM: |
| 303 | case GL_BLEND_EQUATION_RGB_OES: |
| 304 | case GL_BLEND_EQUATION_ALPHA_OES: |
| 305 | case GL_BLEND_DST_RGB_OES: |
| 306 | case GL_BLEND_SRC_RGB_OES: |
| 307 | case GL_BLEND_DST_ALPHA_OES: |
| 308 | case GL_BLEND_SRC_ALPHA_OES: |
| 309 | case GL_MAX_LIGHTS: |
| 310 | case GL_SHADER_TYPE: |
| 311 | case GL_DELETE_STATUS: |
| 312 | case GL_COMPILE_STATUS: |
| 313 | case GL_INFO_LOG_LENGTH: |
| 314 | case GL_SHADER_SOURCE_LENGTH: |
| 315 | case GL_CURRENT_PROGRAM: |
| 316 | case GL_LINK_STATUS: |
| 317 | case GL_VALIDATE_STATUS: |
| 318 | case GL_ATTACHED_SHADERS: |
| 319 | case GL_ACTIVE_UNIFORMS: |
| 320 | case GL_ACTIVE_ATTRIBUTES: |
| 321 | case GL_SUBPIXEL_BITS: |
| 322 | case GL_MAX_CUBE_MAP_TEXTURE_SIZE: |
| 323 | case GL_NUM_SHADER_BINARY_FORMATS: |
| 324 | case GL_SHADER_COMPILER: |
| 325 | case GL_MAX_VERTEX_ATTRIBS: |
| 326 | case GL_MAX_VERTEX_UNIFORM_VECTORS: |
| 327 | case GL_MAX_VARYING_VECTORS: |
| 328 | case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: |
| 329 | case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: |
| 330 | case GL_MAX_FRAGMENT_UNIFORM_VECTORS: |
| 331 | case GL_MAX_RENDERBUFFER_SIZE: |
| 332 | case GL_MAX_TEXTURE_IMAGE_UNITS: |
| 333 | case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES: |
| 334 | case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES: |
| 335 | case GL_LINE_WIDTH: |
| 336 | s = 1; |
| 337 | break; |
| 338 | case GL_ALIASED_LINE_WIDTH_RANGE: |
| 339 | case GL_ALIASED_POINT_SIZE_RANGE: |
| 340 | case GL_DEPTH_RANGE: |
| 341 | case GL_MAX_VIEWPORT_DIMS: |
| 342 | case GL_SMOOTH_POINT_SIZE_RANGE: |
| 343 | case GL_SMOOTH_LINE_WIDTH_RANGE: |
| 344 | s= 2; |
| 345 | break; |
| 346 | case GL_SPOT_DIRECTION: |
| 347 | case GL_POINT_DISTANCE_ATTENUATION: |
| 348 | case GL_CURRENT_NORMAL: |
| 349 | s = 3; |
| 350 | break; |
| 351 | case GL_CURRENT_VERTEX_ATTRIB: |
| 352 | case GL_CURRENT_TEXTURE_COORDS: |
| 353 | case GL_CURRENT_COLOR: |
| 354 | case GL_FOG_COLOR: |
| 355 | case GL_AMBIENT: |
| 356 | case GL_DIFFUSE: |
| 357 | case GL_SPECULAR: |
| 358 | case GL_EMISSION: |
| 359 | case GL_POSITION: |
| 360 | case GL_LIGHT_MODEL_AMBIENT: |
| 361 | case GL_TEXTURE_ENV_COLOR: |
| 362 | case GL_SCISSOR_BOX: |
| 363 | case GL_VIEWPORT: |
| 364 | case GL_TEXTURE_CROP_RECT_OES: |
| 365 | case GL_COLOR_CLEAR_VALUE: |
| 366 | case GL_COLOR_WRITEMASK: |
| 367 | case GL_AMBIENT_AND_DIFFUSE: |
| 368 | case GL_BLEND_COLOR: |
| 369 | s = 4; |
| 370 | break; |
| 371 | case GL_MODELVIEW_MATRIX: |
| 372 | case GL_PROJECTION_MATRIX: |
| 373 | case GL_TEXTURE_MATRIX: |
| 374 | s = 16; |
| 375 | break; |
| 376 | default: |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 377 | ERR("glUtilsParamSize: unknown param 0x%08x", param); |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 378 | s = 1; // assume 1 |
| 379 | } |
| 380 | return s; |
| 381 | } |
| 382 | |
| 383 | void glUtilsPackPointerData(unsigned char *dst, unsigned char *src, |
| 384 | int size, GLenum type, unsigned int stride, |
| 385 | unsigned int datalen) |
| 386 | { |
| 387 | unsigned int vsize = size * glSizeof(type); |
| 388 | if (stride == 0) stride = vsize; |
| 389 | |
| 390 | if (stride == vsize) { |
| 391 | memcpy(dst, src, datalen); |
| 392 | } else { |
| 393 | for (unsigned int i = 0; i < datalen; i += vsize) { |
| 394 | memcpy(dst, src, vsize); |
| 395 | dst += vsize; |
| 396 | src += stride; |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | int glUtilsPixelBitSize(GLenum format, GLenum type) |
| 402 | { |
| 403 | int components = 0; |
| 404 | int componentsize = 0; |
| 405 | int pixelsize = 0; |
| 406 | switch(type) { |
| 407 | case GL_BYTE: |
| 408 | case GL_UNSIGNED_BYTE: |
| 409 | componentsize = 8; |
| 410 | break; |
| 411 | case GL_SHORT: |
| 412 | case GL_UNSIGNED_SHORT: |
| 413 | case GL_UNSIGNED_SHORT_5_6_5: |
| 414 | case GL_UNSIGNED_SHORT_4_4_4_4: |
| 415 | case GL_UNSIGNED_SHORT_5_5_5_1: |
| 416 | case GL_RGB565_OES: |
| 417 | case GL_RGB5_A1_OES: |
| 418 | case GL_RGBA4_OES: |
| 419 | pixelsize = 16; |
| 420 | break; |
| 421 | case GL_INT: |
| 422 | case GL_UNSIGNED_INT: |
| 423 | case GL_FLOAT: |
| 424 | case GL_FIXED: |
| 425 | case GL_UNSIGNED_INT_24_8_OES: |
| 426 | pixelsize = 32; |
| 427 | break; |
| 428 | default: |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 429 | ERR("glUtilsPixelBitSize: unknown pixel type - assuming pixel data 0"); |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 430 | componentsize = 0; |
| 431 | } |
| 432 | |
| 433 | if (pixelsize == 0) { |
| 434 | switch(format) { |
| 435 | #if 0 |
| 436 | case GL_RED: |
| 437 | case GL_GREEN: |
| 438 | case GL_BLUE: |
| 439 | #endif |
| 440 | case GL_ALPHA: |
| 441 | case GL_LUMINANCE: |
| 442 | case GL_DEPTH_COMPONENT: |
| 443 | case GL_DEPTH_STENCIL_OES: |
| 444 | components = 1; |
| 445 | break; |
| 446 | case GL_LUMINANCE_ALPHA: |
| 447 | components = 2; |
| 448 | break; |
| 449 | case GL_RGB: |
| 450 | #if 0 |
| 451 | case GL_BGR: |
| 452 | #endif |
| 453 | components = 3; |
| 454 | break; |
| 455 | case GL_RGBA: |
| 456 | case GL_BGRA_EXT: |
| 457 | components = 4; |
| 458 | break; |
| 459 | default: |
Jason Macnak | e43e3a0 | 2021-10-14 10:35:33 -0700 | [diff] [blame] | 460 | ERR("glUtilsPixelBitSize: unknown pixel format..."); |
Lingfeng Yang | 0f12dc5 | 2020-10-28 09:25:37 -0700 | [diff] [blame] | 461 | components = 0; |
| 462 | } |
| 463 | pixelsize = components * componentsize; |
| 464 | } |
| 465 | |
| 466 | return pixelsize; |
| 467 | } |