tests/spec/khr_texture_compression_astc/khr_compressed_astc-miptree-array.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
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   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 is an adaptation of the khr_texture_compression_astc-miptree test.
  29  *
  30  * This test draws miplevels of the compressed textures in a 2D array
  31  * according to the MIPLAYOUT_BELOW organization scheme. Each miplevel of
  32  * both images are compared for equality after each level is drawn.
  33  */
  34
  35 #include "piglit-util-gl.h"
  36 #include "piglit_ktx.h"
  37
  38 #define num_levels 8
  39 #define level0_width 160
  40 #define level0_height 106
  41
  42 #define num_vertices 4
  43
  44 static GLuint prog;
  45
  46 static struct piglit_gl_test_config *piglit_config;
  47
  48 enum piglit_result
  49 test_miptrees(void* odd);
  50
  51 PIGLIT_GL_TEST_CONFIG_BEGIN
  52
  53         piglit_config = &config;
  54         config.supports_gl_compat_version = 11;
  55         config.supports_gl_es_version = 31;
  56
  57         config.window_width = 2 * level0_width;
  58         config.window_height = level0_height + (level0_height >> 1);
  59         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  60         static bool is_odd[2] = {true, false};
  61
  62         config.subtests = (struct piglit_subtest[]) {
  63                 {
  64                         "5x5 Block Dim",
  65                         "odd",
  66                         test_miptrees,
  67                         &is_odd[0]
  68                 },
  69                 {
  70                         "12x12 Block Dim",
  71                         "even",
  72                         test_miptrees,
  73                         &is_odd[1]
  74                 },
  75                 {NULL},
  76         };
  77
  78 PIGLIT_GL_TEST_CONFIG_END
  79
  80 /**
  81  * The \a filename is relative to the current test's source directory.
  82  *
  83  * A new texture is created and returned in \a tex_name.
  84  */
  85 static void
  86 load_texture(const char *dir1, const char *dir2,
  87         const char *filename, GLuint *tex_name)
  88 {
  89         struct piglit_ktx *ktx;
  90         const struct piglit_ktx_info *info;
  91         char filepath[4096];
  92         bool ok = true;
  93
  94         piglit_join_paths(filepath, sizeof(filepath), 7,
  95                           piglit_source_dir(),
  96                           "tests",
  97                           "spec",
  98                           "khr_texture_compression_astc",
  99                           dir1,
 100                           dir2,
 101                           filename);
 102
 103         ktx = piglit_ktx_read_file(filepath);
 104         if (ktx == NULL)
 105                 piglit_report_result(PIGLIT_FAIL);
 106
 107
 108         info = piglit_ktx_get_info(ktx);
 109         assert(info->num_miplevels == num_levels);
 110         assert((info->target == GL_TEXTURE_2D_ARRAY) || (info->target == GL_TEXTURE_2D));
 111         assert(info->pixel_width == level0_width);
 112         assert(info->pixel_height== level0_height);
 113
 114         *tex_name = 0;
 115         ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
 116         if (!ok)
 117                 piglit_report_result(PIGLIT_FAIL);
 118
 119         piglit_ktx_destroy(ktx);
 120 }
 121
 122 /** Compares the compresseed texture against the decompressed texture */
 123 bool draw_compare_levels(GLint index,
 124                         GLint level_pixel_size_loc, GLint pixel_offset_loc,
 125                         GLuint compressed_tex)
 126 {
 127         unsigned y = 0;
 128         unsigned x = 0;
 129         bool pass = true;
 130         int level = 0;
 131
 132         glBindTexture(GL_TEXTURE_2D_ARRAY, compressed_tex);
 133
 134         for (; level < num_levels; ++level) {
 135                 int w = level0_width >> level;
 136                 int h = level0_height >> level;
 137                 glUniform2f(level_pixel_size_loc, (float) w, (float) h);
 138
 139                 /* Draw miplevel of compressed texture 1. */
 140                 glUniform2f(pixel_offset_loc, x, y);
 141                 glUniform1i(index, 0);
 142                 glDrawArrays(GL_TRIANGLE_FAN, 0, num_vertices);
 143
 144                 /* Draw miplevel of compressed texture 2. */
 145                 glUniform2f(pixel_offset_loc, level0_width + x, y);
 146                 glUniform1i(index, 1);
 147                 glDrawArrays(GL_TRIANGLE_FAN, 0, num_vertices);
 148
 149                 if (pass) {
 150                         pass = piglit_probe_rects_equal(x, y,
 151                                                 level0_width + x, y,
 152                                                  w, h, GL_RGBA);
 153
 154                         if (!pass)
 155                                 piglit_loge("Miplevel %d", level);
 156                 }
 157
 158                 /* Update the next miplevel arrangement */
 159                 if (level == 1)
 160                         x += w;
 161                 else
 162                         y += h;
 163         }
 164
 165         piglit_present_results();
 166         return pass;
 167 }
 168
 169 enum piglit_result
 170 test_miptrees(void* odd)
 171 {
 172         int subtest =  0;
 173         int block_dims = *(bool*)odd;
 174
 175         /* Texture objects. */
 176         GLuint compressed_tex;
 177
 178         static const char * tests[3] = {"hdr", "ldrs", "ldrl"};
 179         static const char * block_dim_str[2] = {"12x12", "5x5"};
 180
 181
 182         GLint pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
 183         GLint level_pixel_size_loc = glGetUniformLocation(prog,
 184                                                         "level_pixel_size");
 185         GLint index = glGetUniformLocation(prog, "index");
 186
 187         /* Generate filename for compressed texture */
 188         char cur_file[50];
 189         snprintf(cur_file, sizeof(cur_file), "array/waffles-%s.ktx",
 190                block_dim_str[block_dims]);
 191
 192         /* Test each submode */
 193         for (; subtest < ARRAY_SIZE(tests); ++subtest) {
 194
 195                 /* Load texture for current submode and block size */
 196                 load_texture("compressed/2D", tests[subtest], cur_file,
 197                     &compressed_tex);
 198
 199                 /* Draw and compare each level of the two textures */
 200                 glClear(GL_COLOR_BUFFER_BIT);
 201                 if (!draw_compare_levels(index, level_pixel_size_loc,
 202                     pixel_offset_loc, compressed_tex)) {
 203                         piglit_loge("Mode %s Block %s.", tests[subtest],
 204                                     block_dim_str[block_dims]);
 205                         return PIGLIT_FAIL;
 206                 }
 207         }
 208         return PIGLIT_PASS;
 209 }
 210
 211 void
 212 piglit_init(int argc, char **argv)
 213 {
 214         static const char vs_source[] =
 215                 "#version 300 es\n"
 216                 "\n"
 217                 "uniform vec2 window_pixel_size;\n"
 218                 "uniform vec2 level_pixel_size;\n"
 219                 "uniform vec2 pixel_offset;\n"
 220                 "\n"
 221                 "// vertex is some corner of the unit square [0,1]^2 \n"
 222                 "in vec2 vertex;\n"
 223                 "out vec2 tex_coord;\n"
 224                 "\n"
 225                 "void main()\n"
 226                 "{\n"
 227                 "    vec2 pos = vertex;\n"
 228                 "    pos *= level_pixel_size;\n"
 229                 "    pos += pixel_offset;\n"
 230                 "    pos /= 0.5 * window_pixel_size;\n"
 231                 "    pos -= vec2(1, 1);\n"
 232                 "    gl_Position = vec4(pos.xy, 0.0, 1.0);\n"
 233                 "\n"
 234                 "    tex_coord = vertex;\n"
 235                 "}\n";
 236
 237         static const char fs_source[] =
 238                 "#version 300 es\n"
 239                 "precision highp float;\n"
 240                 "\n"
 241                 "uniform highp sampler2DArray tex;\n"
 242                 "uniform int index;\n"
 243                 "in vec2 tex_coord;\n"
 244                 "out vec4 fragment_color;\n"
 245                 "\n"
 246                 "void main()\n"
 247                 "{\n"
 248                 "    vec4 t = texture(tex, vec3(tex_coord.x, tex_coord.y, index));\n"
 249                 "    fragment_color = vec4(t.rgb, 1.0);\n"
 250                 "}\n";
 251
 252         /* Vertices to draw a square triangle strip. */
 253         static const GLfloat vertices[2 * num_vertices] = {
 254                 0, 0,
 255                 1, 0,
 256                 1, 1,
 257                 0, 1,
 258         };
 259
 260         GLint vertex_loc;
 261         GLuint vertex_buf;
 262         GLuint vao;
 263
 264         piglit_require_extension("GL_KHR_texture_compression_astc_ldr");
 265
 266         if (!piglit_is_gles())
 267                 piglit_require_extension("GL_ARB_ES3_compatibility");
 268
 269         glClearColor(0.9098, 0.8314, 0.7843, 1.0);
 270         glViewport(0, 0, piglit_width, piglit_height);
 271
 272         glGenBuffers(1, &vertex_buf);
 273         glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
 274
 275         glGenVertexArrays(1, &vao);
 276         glBindVertexArray(vao);
 277
 278         prog = piglit_build_simple_program(vs_source, fs_source);
 279         glReleaseShaderCompiler();
 280         glUseProgram(prog);
 281
 282         vertex_loc = glGetAttribLocation(prog, "vertex");
 283         glEnableVertexAttribArray(vertex_loc);
 284         glVertexAttribPointer(vertex_loc, 2, GL_FLOAT, GL_FALSE, 0, NULL);
 285         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
 286                      GL_STATIC_DRAW);
 287
 288         glUniform1i(glGetUniformLocation(prog, "tex"), 0);
 289         glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
 290                     piglit_width, piglit_height);
 291 }
 292
 293 enum piglit_result
 294 piglit_display(void)
 295 {
 296         return piglit_run_selected_subtests(piglit_config->subtests,
 297                                       piglit_config->selected_subtests,
 298                                       piglit_config->num_selected_subtests,
 299                                       PIGLIT_SKIP);
 300 }