tests/spec/khr_texture_compression_astc/khr_compressed_astc-miptree.c

   1 /*
   2  * Copyright 2015 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  * This test is an adaptation of the oes_compressed_etc1_rgb8_textures test.
  29  *
  30  * The files under compressed/2D contain full miptrees, in the
  31  * GL_*_ASTC_* formats, of a 2D texture of waffles and fruit [1]. The base
  32  * level size was shrunken to 160x106 pixels. The files under the decompressed/2D
  33  * directory contain the same miptree in GL_RGBA format. Each miplevel was
  34  * obtained by decompressing the corresponding ASTC texture with astcenc [2].
  35  *
  36  * This test draws miplevels of the compressed textures in a space-efficient
  37  * manner It does the same when drawing the decompressed texture on the right.
  38  * Each miplevel of both images are compared for equality after being drawn.
  39  *
  40  * [1] The reference image is located at 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 http://malideveloper.arm.com/develop-for-mali/tools/software-tools/astc-evaluation-codec/.
  42  */
  43
  44 #include "piglit-util-gl.h"
  45 #include "piglit_ktx.h"
  46
  47 #define NUM_LEVELS 8
  48 #define LEVEL0_WIDTH 160
  49 #define LEVEL0_HEIGHT 106
  50
  51 #define NUM_VERTICES 4
  52
  53 static GLuint prog;
  54
  55 static struct piglit_gl_test_config *piglit_config;
  56
  57 enum test_type
  58 {
  59         TEST_TYPE_HDR,
  60         TEST_TYPE_LDR,
  61         TEST_TYPE_SRGB,
  62         TEST_TYPE_SRGB_FP,
  63         TEST_TYPE_SRGB_SD,
  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 enum test_type srgb_fp_test = TEST_TYPE_SRGB_FP;
  73 static enum test_type srgb_skip_test = TEST_TYPE_SRGB_SD;
  74 static const struct piglit_subtest subtests[] = {
  75         {
  76                 "LDR Profile",
  77                 "ldr",
  78                 test_miptrees,
  79                 &ldr_test,
  80         },
  81         {
  82                 "HDR Profile",
  83                 "hdr",
  84                 test_miptrees,
  85                 &hdr_test,
  86         },
  87         {
  88                 "sRGB decode",
  89                 "srgb",
  90                 test_miptrees,
  91                 &srgb_test,
  92         },
  93         {
  94                 "sRGB decode full precision",
  95                 "srgb-fp",
  96                 test_miptrees,
  97                 &srgb_fp_test,
  98         },
  99         {
 100                 "sRGB skip decode",
 101                 "srgb-sd",
 102                 test_miptrees,
 103                 &srgb_skip_test,
 104         },
 105         {NULL},
 106 };
 107
 108 PIGLIT_GL_TEST_CONFIG_BEGIN
 109
 110         piglit_config = &config;
 111         config.supports_gl_compat_version = 11;
 112         config.supports_gl_es_version = 20;
 113
 114         config.window_width = 2 * LEVEL0_WIDTH;
 115         config.window_height = LEVEL0_HEIGHT + (LEVEL0_HEIGHT >> 1);
 116         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
 117
 118         config.subtests = subtests;
 119
 120 PIGLIT_GL_TEST_CONFIG_END
 121
 122
 123 /**
 124  * The \a filename is relative to the current test's source directory.
 125  *
 126  * A new texture is created and returned in \a tex_name.
 127  */
 128 static void
 129 load_texture(const char *dir1, const char *dir2,
 130         const char *block_dim_str, GLuint *tex_name)
 131 {
 132         struct piglit_ktx *ktx;
 133         const struct piglit_ktx_info *info;
 134         char filepath[4096];
 135         char cur_file[20];
 136         bool ok = true;
 137
 138         /* Generate filename for compressed texture */
 139         snprintf(cur_file, sizeof(cur_file), "waffles-%s.ktx",
 140                                 block_dim_str);
 141
 142         piglit_join_paths(filepath, sizeof(filepath), 7,
 143                           piglit_source_dir(),
 144                           "tests",
 145                           "spec",
 146                           "khr_texture_compression_astc",
 147                           dir1,
 148                           dir2,
 149                           cur_file);
 150
 151         ktx = piglit_ktx_read_file(filepath);
 152         if (ktx == NULL)
 153                 piglit_report_result(PIGLIT_FAIL);
 154
 155         info = piglit_ktx_get_info(ktx);
 156         assert(info->num_miplevels == NUM_LEVELS);
 157         assert(info->target == GL_TEXTURE_2D);
 158         assert(info->pixel_width == LEVEL0_WIDTH);
 159         assert(info->pixel_height == LEVEL0_HEIGHT);
 160
 161         *tex_name = 0;
 162         ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
 163         if (!ok)
 164                 piglit_report_result(PIGLIT_FAIL);
 165
 166         piglit_ktx_destroy(ktx);
 167 }
 168
 169 /** Compares the compressed texture against the decompressed texture */
 170 bool draw_compare_levels(bool check_error, bool srgb_skip_decode,
 171                         GLint level_pixel_size_loc, GLint pixel_offset_loc,
 172                         GLuint compressed_tex, GLuint decompressed_tex)
 173 {
 174         /* Fully-saturated magenta */
 175         static const float error_color[4] = {1.0, 0.0, 1.0, 1.0};
 176
 177         unsigned y = 0;
 178         unsigned x = 0;
 179         bool pass = true;
 180         int level = 0;
 181
 182         for (; level < NUM_LEVELS; ++level) {
 183                 int w = LEVEL0_WIDTH >> level;
 184                 int h = LEVEL0_HEIGHT >> level;
 185                 glUniform2f(level_pixel_size_loc, (float) w, (float) h);
 186
 187
 188                 /* Draw miplevel of compressed texture. */
 189                 glBindTexture(GL_TEXTURE_2D, compressed_tex);
 190                 if (srgb_skip_decode)
 191                         glTexParameteri(GL_TEXTURE_2D,
 192                                         GL_TEXTURE_SRGB_DECODE_EXT,
 193                                         GL_SKIP_DECODE_EXT);
 194                 glUniform2f(pixel_offset_loc, x, y);
 195                 glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
 196
 197                 /* Draw miplevel of decompressed texture. */
 198                 if (!check_error) {
 199                         glBindTexture(GL_TEXTURE_2D, decompressed_tex);
 200                         if (srgb_skip_decode)
 201                                 glTexParameteri(GL_TEXTURE_2D,
 202                                                 GL_TEXTURE_SRGB_DECODE_EXT,
 203                                                 GL_SKIP_DECODE_EXT);
 204                         glUniform2f(pixel_offset_loc, LEVEL0_WIDTH + x, y);
 205                         glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
 206                 }
 207
 208                 /* Check the textures (or error-colors) for equivalence. */
 209                 if (pass) {
 210                         if (check_error) {
 211                                 pass = piglit_probe_rect_rgba(x, y, w, h,
 212                                                                 error_color);
 213                         } else {
 214                                 pass = piglit_probe_rects_equal(x, y,
 215                                                         LEVEL0_WIDTH + x, y,
 216                                                          w, h, GL_RGBA);
 217                         }
 218
 219                         if (!pass)
 220                                 piglit_loge("Miplevel %d", level);
 221                 }
 222
 223                 /* Update the next miplevel arrangement */
 224                 if (level == 1)
 225                         x += w;
 226                 else
 227                         y += h;
 228         }
 229
 230         /* Delete bound textures */
 231         glDeleteTextures(1, &compressed_tex);
 232         glDeleteTextures(1, &decompressed_tex);
 233
 234         piglit_present_results();
 235         return pass;
 236 }
 237
 238 enum piglit_result
 239 test_miptrees(void* input_type)
 240 {
 241         const enum test_type subtest = *(enum test_type*) input_type;
 242         const bool is_srgb_test = subtest == TEST_TYPE_SRGB;
 243         const bool is_srgb_skip_decode_test = subtest == TEST_TYPE_SRGB_SD;
 244         const bool is_hdr_test  = subtest == TEST_TYPE_HDR;
 245
 246         static const char * tests[5] = {"hdr", "ldrl", "ldrs", "ldrs", "ldrs"};
 247         static const char * block_dim_str[14] = {
 248                 "4x4",
 249                 "5x4",
 250                 "5x5",
 251                 "6x5",
 252                 "6x6",
 253                 "8x5",
 254                 "8x6",
 255                 "8x8",
 256                 "10x5",
 257                 "10x6",
 258                 "10x8",
 259                 "10x10",
 260                 "12x10",
 261                 "12x12"
 262         };
 263
 264         GLint pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
 265         GLint level_pixel_size_loc = glGetUniformLocation(prog,
 266                                                         "level_pixel_size");
 267
 268         if (is_srgb_skip_decode_test)
 269                 piglit_require_extension("GL_EXT_texture_sRGB_decode");
 270
 271         /*  Check for error color if an LDR-only sys reading an HDR
 272          *  texture. No need to draw a reference mipmap in this case.
 273          */
 274         const bool has_hdr = piglit_is_extension_supported(
 275                 "GL_KHR_texture_compression_astc_hdr");
 276         const bool check_error = is_hdr_test && !has_hdr;
 277         int block_dims;
 278
 279         if (is_srgb_test)
 280                 /* Loosen up the tolerence for sRGB tests. This will allow testing
 281                  * sRGB formats which have known precision issues in void extent
 282                  * blocks. See khronos bug#11294 for details.
 283                  */
 284                 piglit_set_tolerance_for_bits(7, 7, 7, 7);
 285         else
 286                 piglit_set_tolerance_for_bits(8, 8, 8, 8);
 287
 288         for (block_dims = 0; block_dims < ARRAY_SIZE(block_dim_str); ++block_dims) {
 289
 290                 /* Texture objects. */
 291                 GLuint tex_compressed = 0;
 292                 GLuint tex_decompressed = 0;
 293
 294                 /* Load texture for current submode and block size */
 295                 load_texture("compressed/2D", tests[subtest],
 296                                 block_dim_str[block_dims],
 297                                 &tex_compressed);
 298                 if (!check_error) {
 299                         load_texture("decompressed/2D", tests[subtest],
 300                                         block_dim_str[block_dims],
 301                                         &tex_decompressed);
 302                 }
 303
 304                 /* Draw and compare each level of the two textures */
 305                 glClear(GL_COLOR_BUFFER_BIT);
 306                 if (!draw_compare_levels(check_error, is_srgb_skip_decode_test,
 307                                         level_pixel_size_loc,
 308                                         pixel_offset_loc,
 309                                         tex_compressed,
 310                                         tex_decompressed)) {
 311                         piglit_loge("Mode %s Block %s.",
 312                                         tests[subtest],
 313                                         block_dim_str[block_dims]);
 314                         return PIGLIT_FAIL;
 315                 }
 316         }
 317         return PIGLIT_PASS;
 318 }
 319
 320 void
 321 piglit_init(int argc, char **argv)
 322 {
 323         static const char vs_source[] =
 324                 "#version 100\n"
 325                 "\n"
 326                 "uniform vec2 window_pixel_size;\n"
 327                 "uniform vec2 level_pixel_size;\n"
 328                 "uniform vec2 pixel_offset;\n"
 329                 "\n"
 330                 "// vertex is some corner of the unit square [0,1]^2 \n"
 331                 "attribute vec2 vertex;\n"
 332                 "varying vec2 tex_coord;\n"
 333                 "\n"
 334                 "void main()\n"
 335                 "{\n"
 336                 "    vec2 pos = vertex;\n"
 337                 "    pos *= level_pixel_size;\n"
 338                 "    pos += pixel_offset;\n"
 339                 "    pos /= 0.5 * window_pixel_size;\n"
 340                 "    pos -= vec2(1, 1);\n"
 341                 "    gl_Position = vec4(pos.xy, 0.0, 1.0);\n"
 342                 "\n"
 343                 "    tex_coord = vertex;\n"
 344                 "}\n";
 345
 346         static const char fs_source[] =
 347                 "#version 100\n"
 348                 "precision highp float;\n"
 349                 "\n"
 350                 "uniform sampler2D tex;\n"
 351                 "varying vec2 tex_coord;\n"
 352                 "\n"
 353                 "void main()\n"
 354                 "{\n"
 355                 "    vec4 t = texture2D(tex, tex_coord);\n"
 356                 "    gl_FragColor = vec4(t.rgb, 1.0);\n"
 357                 "}\n";
 358
 359         /* Vertices to draw a square triangle strip. */
 360         static const GLfloat vertices[2 * NUM_VERTICES] = {
 361                 0, 0,
 362                 1, 0,
 363                 1, 1,
 364                 0, 1,
 365         };
 366
 367         GLint vertex_loc;
 368         GLuint vertex_buf;
 369         GLuint vao;
 370
 371         piglit_require_extension("GL_KHR_texture_compression_astc_ldr");
 372
 373         glClearColor(0.9098, 0.8314, 0.7843, 1.0);
 374         glViewport(0, 0, piglit_width, piglit_height);
 375
 376         glGenBuffers(1, &vertex_buf);
 377         glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
 378
 379         glGenVertexArrays(1, &vao);
 380         glBindVertexArray(vao);
 381
 382         prog = piglit_build_simple_program(vs_source, fs_source);
 383         glReleaseShaderCompiler();
 384         glUseProgram(prog);
 385
 386         vertex_loc = glGetAttribLocation(prog, "vertex");
 387         glEnableVertexAttribArray(vertex_loc);
 388         glVertexAttribPointer(vertex_loc, 2, GL_FLOAT, GL_FALSE, 0, NULL);
 389         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
 390                      GL_STATIC_DRAW);
 391
 392         glUniform1i(glGetUniformLocation(prog, "tex"), 0);
 393         glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
 394                     piglit_width, piglit_height);
 395 }
 396
 397 enum piglit_result
 398 piglit_display(void)
 399 {
 400         return piglit_run_selected_subtests(piglit_config->subtests,
 401                                       piglit_config->selected_subtests,
 402                                       piglit_config->num_selected_subtests,
 403                                       PIGLIT_SKIP);
 404 }