tests/spec/oes_texture_compression_astc/oes_compressed_astc-miptree-3d.c

   1 /*
   2  * Copyright 2016 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * \file
  26  * \brief Test texturing from an ASTC miptree of a real image.
  27  *
  28  * The files under compressed/3D/{hdr, ldrl, ldrs} contain full miptrees, in
  29  * the GL_*_ASTC_* formats, of a 3D texture of waffles and fruit [1]. The base
  30  * level size was shrunken to 160x106 pixels and used to create a 3D texture
  31  * with depth=8. The files under the decompressed/3D/{hdr, ldrl, ldrs} directory
  32  * contain the same miptree in GL_RGBA format. Each miplevel was obtained by
  33  * decompressing the corresponding ASTC texture with astcenc [2].
  34  *
  35  * This test draws miplevels of the compressed textures in a space-efficient
  36  * manner. It does the same when drawing the decompressed texture on the right.
  37  * Each miplevel of both images are compared for equality after being drawn.
  38  *
  39  * [1] The reference image is located at:
  40  *     http://people.freedesktop.org/~chadversary/permalink/2012-07-09/1574cff2-d091-4421-a3cf-b56c7943d060.jpg.
  41  * [2] astcenc is the reference ASTC compression tool, available at:
  42  *     http://malideveloper.arm.com/develop-for-mali/tools/software-tools/astc-evaluation-codec/.
  43  */
  44
  45 #include "piglit-util-gl.h"
  46 #include "piglit_ktx.h"
  47
  48 #define NUM_LEVELS 3
  49 #define LEVEL0_WIDTH 160
  50 #define LEVEL0_HEIGHT 106
  51 #define LEVEL0_DEPTH 8
  52
  53 #define NUM_VERTICES 4
  54
  55 static GLuint prog;
  56
  57 static struct piglit_gl_test_config *piglit_config;
  58
  59 enum test_type
  60 {
  61         TEST_TYPE_HDR,
  62         TEST_TYPE_LDR,
  63         TEST_TYPE_SRGB,
  64 };
  65
  66 enum piglit_result
  67 test_miptrees(void* input_type);
  68
  69 static enum test_type ldr_test  = TEST_TYPE_LDR;
  70 static enum test_type hdr_test  = TEST_TYPE_HDR;
  71 static enum test_type srgb_test = TEST_TYPE_SRGB;
  72 static const struct piglit_subtest subtests[] = {
  73         {
  74                 "LDR Profile",
  75                 "ldr",
  76                 test_miptrees,
  77                 &ldr_test,
  78         },
  79         {
  80                 "HDR Profile",
  81                 "hdr",
  82                 test_miptrees,
  83                 &hdr_test,
  84         },
  85         {
  86                 "sRGB decode",
  87                 "srgb",
  88                 test_miptrees,
  89                 &srgb_test,
  90         },
  91         {NULL},
  92 };
  93
  94 PIGLIT_GL_TEST_CONFIG_BEGIN
  95
  96         piglit_config = &config;
  97         config.supports_gl_compat_version = 11;
  98         config.supports_gl_es_version = 30;
  99
 100         config.window_width = 2 * LEVEL0_WIDTH;
 101         config.window_height = LEVEL0_HEIGHT + (LEVEL0_HEIGHT >> 1);
 102         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
 103
 104         config.subtests = subtests;
 105
 106 PIGLIT_GL_TEST_CONFIG_END
 107
 108 /**
 109  * The \a filename is relative to the current test's source directory.
 110  *
 111  * A new texture is created and returned in \a tex_name.
 112  */
 113 static void
 114 load_texture(const char *dir1, const char *dir2,
 115              const char *block_dim_str, GLuint *tex_name)
 116 {
 117         struct piglit_ktx *ktx;
 118         const struct piglit_ktx_info *info;
 119         char filepath[4096];
 120         char cur_file[20];
 121         bool ok = true;
 122
 123         /* Generate filename for compressed texture */
 124         snprintf(cur_file, sizeof(cur_file), "waffles-%s.ktx",
 125                                 block_dim_str);
 126
 127         piglit_join_paths(filepath, sizeof(filepath), 7,
 128                           piglit_source_dir(),
 129                           "tests",
 130                           "spec",
 131                           "oes_texture_compression_astc",
 132                           dir1,
 133                           dir2,
 134                           cur_file);
 135
 136         ktx = piglit_ktx_read_file(filepath);
 137         if (ktx == NULL)
 138                 piglit_report_result(PIGLIT_FAIL);
 139
 140         info = piglit_ktx_get_info(ktx);
 141         assert(info->num_miplevels == NUM_LEVELS);
 142         assert(info->target == GL_TEXTURE_3D);
 143         assert(info->pixel_width == LEVEL0_WIDTH);
 144         assert(info->pixel_height == LEVEL0_HEIGHT);
 145         assert(info->pixel_depth == LEVEL0_DEPTH);
 146
 147         *tex_name = 0;
 148         ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
 149         if (!ok)
 150                 piglit_report_result(PIGLIT_FAIL);
 151
 152         piglit_ktx_destroy(ktx);
 153 }
 154
 155 /** Compares the compressed texture against the decompressed texture */
 156 bool draw_compare_levels(bool check_error,
 157                          GLint level_pixel_size_loc, GLint pixel_offset_loc,
 158                          GLint slice_loc, GLint depth_loc, GLint slice,
 159                          GLuint compressed_tex, GLuint decompressed_tex)
 160 {
 161         /* Fully-saturated magenta */
 162         static const float error_color[4] = {1.0, 0.0, 1.0, 1.0};
 163
 164         unsigned y = 0;
 165         unsigned x = 0;
 166         bool result = true;
 167         int level = 0;
 168
 169         for (; level < NUM_LEVELS; ++level) {
 170                 int w = LEVEL0_WIDTH >> level;
 171                 int h = LEVEL0_HEIGHT >> level;
 172                 int d = LEVEL0_DEPTH >> level;
 173                 bool pass = true;
 174                 glUniform2f(level_pixel_size_loc, (float) w, (float) h);
 175                 glUniform1f(slice_loc, slice);
 176                 glUniform1f(depth_loc, d);
 177
 178                 /* Draw miplevel of compressed texture. */
 179                 glBindTexture(GL_TEXTURE_3D, compressed_tex);
 180                 glUniform2f(pixel_offset_loc, x, y);
 181                 glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
 182
 183                 /* Check the textures (or error-colors) for equivalence. */
 184                 if (check_error) {
 185                         pass = piglit_probe_rect_rgba(x, y, w, h,
 186                                                       error_color);
 187                 } else {
 188                         /* Draw miplevel of decompressed texture. */
 189                         glBindTexture(GL_TEXTURE_3D, decompressed_tex);
 190                         glUniform2f(pixel_offset_loc, LEVEL0_WIDTH + x, y);
 191                         glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
 192
 193                         pass = piglit_probe_rects_equal(x, y,
 194                                                 LEVEL0_WIDTH + x, y,
 195                                                 w, h, GL_RGBA);
 196                 }
 197
 198                 if (!pass) {
 199                         piglit_loge("Slice: %d, Miplevel: %d",
 200                                     slice, level);
 201                         result = false;
 202                 }
 203
 204                 /* Update the next miplevel arrangement */
 205                 if (level == 1)
 206                         x += w;
 207                 else
 208                         y += h;
 209         }
 210
 211         piglit_present_results();
 212         return result;
 213 }
 214
 215 enum piglit_result
 216 test_miptrees(void* input_type)
 217 {
 218         GLint slice_loc, depth_loc, pixel_offset_loc, level_pixel_size_loc;
 219         const enum test_type subtest = *(enum test_type*) input_type;
 220         const bool is_srgb_test = subtest == TEST_TYPE_SRGB;
 221         const bool is_hdr_test  = subtest == TEST_TYPE_HDR;
 222
 223         static const char * tests[3] = {"hdr", "ldrl", "ldrs"};
 224         static const char * block_dim_str[] = {
 225                 "3x3x3",
 226                 "4x3x3",
 227                 "4x4x3",
 228                 "4x4x4",
 229                 "5x4x4",
 230                 "5x5x4",
 231                 "5x5x5",
 232                 "6x5x5",
 233                 "6x6x5",
 234                 "6x6x6"
 235         };
 236
 237         pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
 238         level_pixel_size_loc = glGetUniformLocation(prog, "level_pixel_size");
 239         slice_loc = glGetUniformLocation(prog, "slice");
 240         depth_loc = glGetUniformLocation(prog, "depth");
 241
 242         /*  Check for error color if an LDR-only sys reading an HDR
 243          *  texture. No need to draw a reference mipmap in this case.
 244          */
 245         const bool has_hdr = piglit_is_extension_supported(
 246                 "GL_KHR_texture_compression_astc_hdr");
 247         const bool check_error = is_hdr_test && !has_hdr;
 248         int block_dims = 0, slice;;
 249
 250         if (is_srgb_test)
 251                 /* Loosen up the tolerance for sRGB tests. This will allow testing
 252                  * sRGB formats which have known precision issues in void extent
 253                  * blocks. See khronos bug#11294 for details.
 254                  */
 255                 piglit_set_tolerance_for_bits(7, 7, 7, 7);
 256         else
 257                 piglit_set_tolerance_for_bits(8, 8, 8, 8);
 258
 259         for ( ; block_dims < ARRAY_SIZE(block_dim_str); ++block_dims) {
 260                 /* Texture objects. */
 261                 GLuint tex_compressed = 0;
 262                 GLuint tex_decompressed = 0;
 263
 264                 /* Load texture for current submode and block size */
 265                 load_texture("compressed/3D", tests[subtest],
 266                              block_dim_str[block_dims],
 267                              &tex_compressed);
 268                 if (!check_error) {
 269                         load_texture("decompressed/3D", tests[subtest],
 270                                      block_dim_str[block_dims],
 271                                      &tex_decompressed);
 272                 }
 273
 274                 for (slice = 0; slice < LEVEL0_DEPTH; slice++) {
 275                         /* Draw and compare each level of the two textures */
 276                         glClear(GL_COLOR_BUFFER_BIT);
 277                         if (!draw_compare_levels(check_error,
 278                                                  level_pixel_size_loc,
 279                                                  pixel_offset_loc,
 280                                                  slice_loc, depth_loc,
 281                                                  slice,
 282                                                  tex_compressed,
 283                                                  tex_decompressed)) {
 284                                 piglit_loge("Mode: %s Block: %s.",
 285                                             tests[subtest],
 286                                             block_dim_str[block_dims]);
 287                                 return PIGLIT_FAIL;
 288                         }
 289                 }
 290                 /* Delete bound textures */
 291                 glDeleteTextures(1, &tex_compressed);
 292                 if (!check_error)
 293                         glDeleteTextures(1, &tex_decompressed);
 294         }
 295         return PIGLIT_PASS;
 296 }
 297
 298 void
 299 piglit_init(int argc, char **argv)
 300 {
 301         static const char vs_source[] =
 302                 "#version 300 es\n"
 303                 "\n"
 304                 "uniform vec2 window_pixel_size;\n"
 305                 "uniform vec2 level_pixel_size;\n"
 306                 "uniform vec2 pixel_offset;\n"
 307                 "\n"
 308                 "// vertex is some corner of the unit square [0,1]^2 \n"
 309                 "in vec2 vertex;\n"
 310                 "out vec2 tex_coord;\n"
 311                 "\n"
 312                 "void main()\n"
 313                 "{\n"
 314                 "    vec2 pos = vertex;\n"
 315                 "    pos *= level_pixel_size;\n"
 316                 "    pos += pixel_offset;\n"
 317                 "    pos /= 0.5 * window_pixel_size;\n"
 318                 "    pos -= vec2(1, 1);\n"
 319                 "    gl_Position = vec4(pos.xy, 0.0, 1.0);\n"
 320                 "\n"
 321                 "    tex_coord = vertex;\n"
 322                 "}\n";
 323
 324         static const char fs_source[] =
 325                 "#version 300 es\n"
 326                 "precision highp float;\n"
 327                 "\n"
 328                 "uniform highp sampler3D tex;\n"
 329                 "uniform float slice;\n"
 330                 "uniform float depth;\n"
 331                 "in vec2 tex_coord;\n"
 332                 "out vec4 fragment_color;\n"
 333                 "\n"
 334                 "void main()\n"
 335                 "{\n"
 336                 "    vec4 t = texture(tex, vec3(tex_coord.x, tex_coord.y,\n"
 337                 "                     slice / (depth - 1.0)));\n"
 338                 "    fragment_color = vec4(t.rgb, 1.0);\n"
 339                 "}\n";
 340
 341         /* Vertices to draw a square triangle strip. */
 342         static const GLfloat vertices[2 * NUM_VERTICES] = {
 343                 0, 0,
 344                 1, 0,
 345                 1, 1,
 346                 0, 1,
 347         };
 348
 349         GLint vertex_loc;
 350         GLuint vertex_buf;
 351         GLuint vao;
 352
 353         piglit_require_extension("GL_OES_texture_compression_astc");
 354
 355         if (!piglit_is_gles())
 356                 piglit_require_extension("GL_ARB_ES3_compatibility");
 357
 358         glClearColor(0.9098, 0.8314, 0.7843, 1.0);
 359         glViewport(0, 0, piglit_width, piglit_height);
 360
 361         glGenBuffers(1, &vertex_buf);
 362         glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
 363
 364         glGenVertexArrays(1, &vao);
 365         glBindVertexArray(vao);
 366
 367         prog = piglit_build_simple_program(vs_source, fs_source);
 368         glReleaseShaderCompiler();
 369         glUseProgram(prog);
 370
 371         vertex_loc = glGetAttribLocation(prog, "vertex");
 372         glEnableVertexAttribArray(vertex_loc);
 373         glVertexAttribPointer(vertex_loc, 2, GL_FLOAT, GL_FALSE, 0, NULL);
 374         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
 375                      GL_STATIC_DRAW);
 376
 377         glUniform1i(glGetUniformLocation(prog, "tex"), 0);
 378         glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
 379                     piglit_width, piglit_height);
 380 }
 381
 382 enum piglit_result
 383 piglit_display(void)
 384 {
 385         return piglit_run_selected_subtests(piglit_config->subtests,
 386                                       piglit_config->selected_subtests,
 387                                       piglit_config->num_selected_subtests,
 388                                       PIGLIT_SKIP);
 389 }