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/SLICED3D/{hdr, ldrl, ldrs} contain full miptrees,
29 * in the GL_*_ASTC_* formats, of a sliced 3D texture of waffles and fruit [1].
30 * The base level size was shrunken to 160x106 pixels and used to create a sliced
31 * 3D texture with depth=8.
32 * The files under the decompressed/SLICED3D/{hdr, ldrl, ldrs} directory contain
33 * the same miptree in GL_RGBA format. Each miplevel was obtained by decompressing
34 * 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:
41 * http://people.freedesktop.org/~chadversary/permalink/2012-07-09/1574cff2-d091-4421-a3cf-b56c7943d060.jpg.
42 * [2] astcenc is the reference ASTC compression tool, available at:
43 * http://malideveloper.arm.com/develop-for-mali/tools/software-tools/astc-evaluation-codec/.
44 */
45
46 #include "piglit-util-gl.h"
47 #include "piglit_ktx.h"
48
49 #define NUM_LEVELS 3
50 #define LEVEL0_WIDTH 160
51 #define LEVEL0_HEIGHT 106
52 #define LEVEL0_DEPTH 8
53
54 #define NUM_VERTICES 4
55
56 static GLuint prog;
57
58 static struct piglit_gl_test_config *piglit_config;
59
60 enum test_type
61 {
62 TEST_TYPE_HDR,
63 TEST_TYPE_LDR,
64 TEST_TYPE_SRGB,
65 TEST_TYPE_SRGB_FP,
66 };
67
68 enum piglit_result
69 test_miptrees(void* input_type);
70
71 static enum test_type ldr_test = TEST_TYPE_LDR;
72 static enum test_type hdr_test = TEST_TYPE_HDR;
73 static enum test_type srgb_test = TEST_TYPE_SRGB;
74 static enum test_type srgb_fp_test = TEST_TYPE_SRGB_FP;
75 static const struct piglit_subtest subtests[] = {
76 {
77 "LDR Profile",
78 "ldr",
79 test_miptrees,
80 &ldr_test,
81 },
82 {
83 "HDR Profile",
84 "hdr",
85 test_miptrees,
86 &hdr_test,
87 },
88 {
89 "sRGB decode",
90 "srgb",
91 test_miptrees,
92 &srgb_test,
93 },
94 {
95 "sRGB decode full precision",
96 "srgb-fp",
97 test_miptrees,
98 &srgb_fp_test,
99 },
100 {NULL},
101 };
102
103 PIGLIT_GL_TEST_CONFIG_BEGIN
104
105 piglit_config = &config;
106 config.supports_gl_compat_version = 11;
107 config.supports_gl_es_version = 30;
108
109 config.window_width = 2 * LEVEL0_WIDTH;
110 config.window_height = LEVEL0_HEIGHT + (LEVEL0_HEIGHT >> 1);
111 config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
112
113 config.subtests = subtests;
114
115 PIGLIT_GL_TEST_CONFIG_END
116
117 /**
118 * The \a filename is relative to the current test's source directory.
119 *
120 * A new texture is created and returned in \a tex_name.
121 */
122 static void
load_texture(const char * dir1,const char * dir2,const char * block_dim_str,GLuint * tex_name)123 load_texture(const char *dir1, const char *dir2,
124 const char *block_dim_str, GLuint *tex_name)
125 {
126 struct piglit_ktx *ktx;
127 const struct piglit_ktx_info *info;
128 char filepath[4096];
129 char cur_file[20];
130 bool ok = true;
131
132 /* Generate filename for compressed texture */
133 snprintf(cur_file, sizeof(cur_file), "waffles-%s.ktx",
134 block_dim_str);
135
136 piglit_join_paths(filepath, sizeof(filepath), 7,
137 piglit_source_dir(),
138 "tests",
139 "spec",
140 "khr_texture_compression_astc",
141 dir1,
142 dir2,
143 cur_file);
144
145 ktx = piglit_ktx_read_file(filepath);
146 if (ktx == NULL)
147 piglit_report_result(PIGLIT_FAIL);
148
149 info = piglit_ktx_get_info(ktx);
150 assert(info->num_miplevels == NUM_LEVELS);
151 assert(info->target == GL_TEXTURE_3D);
152 assert(info->pixel_width == LEVEL0_WIDTH);
153 assert(info->pixel_height == LEVEL0_HEIGHT);
154 assert(info->pixel_depth == LEVEL0_DEPTH);
155
156 *tex_name = 0;
157 ok = piglit_ktx_load_texture(ktx, tex_name, NULL);
158 if (!ok)
159 piglit_report_result(PIGLIT_FAIL);
160
161 piglit_ktx_destroy(ktx);
162 }
163
164 /** Compares the compressed texture against the decompressed texture */
draw_compare_levels(bool check_error,GLint level_pixel_size_loc,GLint pixel_offset_loc,GLint slice_loc,GLint depth_loc,GLint slice,GLuint compressed_tex,GLuint decompressed_tex)165 bool draw_compare_levels(bool check_error,
166 GLint level_pixel_size_loc, GLint pixel_offset_loc,
167 GLint slice_loc, GLint depth_loc, GLint slice,
168 GLuint compressed_tex, GLuint decompressed_tex)
169 {
170 /* Fully-saturated magenta */
171 static const float error_color[4] = {1.0, 0.0, 1.0, 1.0};
172
173 unsigned y = 0;
174 unsigned x = 0;
175 bool result = true;
176 int level = 0;
177
178 for (; level < NUM_LEVELS; ++level) {
179 int w = LEVEL0_WIDTH >> level;
180 int h = LEVEL0_HEIGHT >> level;
181 int d = LEVEL0_DEPTH >> level;
182 bool pass = true;
183 glUniform2f(level_pixel_size_loc, (float) w, (float) h);
184 glUniform1f(slice_loc, slice);
185 glUniform1f(depth_loc, d);
186
187 /* Draw miplevel of compressed texture. */
188 glBindTexture(GL_TEXTURE_3D, compressed_tex);
189 glUniform2f(pixel_offset_loc, x, y);
190 glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
191
192 /* Check the textures (or error-colors) for equivalence. */
193 if (check_error) {
194 pass = piglit_probe_rect_rgba(x, y, w, h,
195 error_color);
196 } else {
197 /* Draw miplevel of decompressed texture. */
198 glBindTexture(GL_TEXTURE_3D, decompressed_tex);
199 glUniform2f(pixel_offset_loc, LEVEL0_WIDTH + x, y);
200 glDrawArrays(GL_TRIANGLE_FAN, 0, NUM_VERTICES);
201
202 pass = piglit_probe_rects_equal(x, y,
203 LEVEL0_WIDTH + x, y,
204 w, h, GL_RGBA);
205 }
206 if (!pass) {
207 piglit_loge("Slice: %d, Miplevel: %d",
208 slice, level);
209 result = false;
210 }
211
212 /* Update the next miplevel arrangement */
213 if (level == 1)
214 x += w;
215 else
216 y += h;
217 }
218
219 piglit_present_results();
220 return result;
221 }
222
223 enum piglit_result
test_miptrees(void * input_type)224 test_miptrees(void* input_type)
225 {
226 GLint slice_loc, depth_loc, pixel_offset_loc, level_pixel_size_loc;
227 const enum test_type subtest = *(enum test_type*) input_type;
228 const bool is_srgb_test = subtest == TEST_TYPE_SRGB;
229 const bool is_hdr_test = subtest == TEST_TYPE_HDR;
230
231 static const char * tests[4] = {"hdr", "ldrl", "ldrs", "ldrs"};
232 static const char * block_dim_str[14] = {
233 "4x4",
234 "5x4",
235 "5x5",
236 "6x5",
237 "6x6",
238 "8x5",
239 "8x6",
240 "8x8",
241 "10x5",
242 "10x6",
243 "10x8",
244 "10x10",
245 "12x10",
246 "12x12"
247 };
248
249 piglit_require_extension("GL_KHR_texture_compression_astc_ldr");
250
251 pixel_offset_loc = glGetUniformLocation(prog, "pixel_offset");
252 level_pixel_size_loc = glGetUniformLocation(prog, "level_pixel_size");
253 slice_loc = glGetUniformLocation(prog, "slice");
254 depth_loc = glGetUniformLocation(prog, "depth");
255
256 /* Check for error color if an LDR-only sys reading an HDR
257 * texture. No need to draw a reference mipmap in this case.
258 */
259 const bool has_hdr = piglit_is_extension_supported(
260 "GL_KHR_texture_compression_astc_hdr");
261 const bool check_error = is_hdr_test && !has_hdr;
262 int slice, block_dims = 0;
263
264 if (!has_hdr)
265 piglit_require_extension(
266 "GL_KHR_texture_compression_astc_sliced_3d");
267
268 if (is_srgb_test)
269 /* Loosen up the tolerence for sRGB tests. This will allow testing
270 * sRGB formats which have known precision issues in void extent
271 * blocks. See khronos bug#11294 for details.
272 */
273 piglit_set_tolerance_for_bits(7, 7, 7, 7);
274 else
275 piglit_set_tolerance_for_bits(8, 8, 8, 8);
276
277 for ( ; block_dims < ARRAY_SIZE(block_dim_str); block_dims++) {
278 /* Texture objects. */
279 GLuint tex_compressed = 0;
280 GLuint tex_decompressed = 0;
281
282 /* Load texture for current submode and block size */
283 load_texture("compressed/SLICED3D", tests[subtest],
284 block_dim_str[block_dims],
285 &tex_compressed);
286 if (!check_error) {
287 load_texture("decompressed/SLICED3D",
288 tests[subtest],
289 block_dim_str[block_dims],
290 &tex_decompressed);
291 }
292 for (slice = 0 ; slice < LEVEL0_DEPTH; slice++) {
293 /* Draw and compare each level of the two textures */
294 glClear(GL_COLOR_BUFFER_BIT);
295 if (!draw_compare_levels(check_error,
296 level_pixel_size_loc,
297 pixel_offset_loc,
298 slice_loc, depth_loc,
299 slice,
300 tex_compressed,
301 tex_decompressed)) {
302 piglit_loge("Mode: %s Block: %s.",
303 tests[subtest],
304 block_dim_str[block_dims]);
305 return PIGLIT_FAIL;
306 }
307 }
308 /* Delete bound textures */
309 glDeleteTextures(1, &tex_compressed);
310 if (!check_error)
311 glDeleteTextures(1, &tex_decompressed);
312
313 }
314 return PIGLIT_PASS;
315 }
316
317 void
piglit_init(int argc,char ** argv)318 piglit_init(int argc, char **argv)
319 {
320 static const char vs_source[] =
321 "#version 300 es\n"
322 "\n"
323 "uniform vec2 window_pixel_size;\n"
324 "uniform vec2 level_pixel_size;\n"
325 "uniform vec2 pixel_offset;\n"
326 "\n"
327 "// vertex is some corner of the unit square [0,1]^2 \n"
328 "in vec2 vertex;\n"
329 "out vec2 tex_coord;\n"
330 "\n"
331 "void main()\n"
332 "{\n"
333 " vec2 pos = vertex;\n"
334 " pos *= level_pixel_size;\n"
335 " pos += pixel_offset;\n"
336 " pos /= 0.5 * window_pixel_size;\n"
337 " pos -= vec2(1, 1);\n"
338 " gl_Position = vec4(pos.xy, 0.0, 1.0);\n"
339 "\n"
340 " tex_coord = vertex;\n"
341 "}\n";
342
343 static const char fs_source[] =
344 "#version 300 es\n"
345 "precision highp float;\n"
346 "\n"
347 "uniform highp sampler3D tex;\n"
348 "uniform float slice;\n"
349 "uniform float depth;\n"
350 "in vec2 tex_coord;\n"
351 "out vec4 fragment_color;\n"
352 "\n"
353 "void main()\n"
354 "{\n"
355 " vec4 t = texture(tex, vec3(tex_coord.x, tex_coord.y,\n"
356 " slice / (depth - 1.0)));\n"
357 " fragment_color = vec4(t.rgb, 1.0);\n"
358 "}\n";
359
360 /* Vertices to draw a square triangle strip. */
361 static const GLfloat vertices[2 * NUM_VERTICES] = {
362 0, 0,
363 1, 0,
364 1, 1,
365 0, 1,
366 };
367
368 GLint vertex_loc;
369 GLuint vertex_buf;
370 GLuint vao;
371
372 if (!piglit_is_gles())
373 piglit_require_extension("GL_ARB_ES3_compatibility");
374
375 glClearColor(0.9098, 0.8314, 0.7843, 1.0);
376 glViewport(0, 0, piglit_width, piglit_height);
377
378 glGenBuffers(1, &vertex_buf);
379 glBindBuffer(GL_ARRAY_BUFFER, vertex_buf);
380
381 glGenVertexArrays(1, &vao);
382 glBindVertexArray(vao);
383
384 prog = piglit_build_simple_program(vs_source, fs_source);
385 glReleaseShaderCompiler();
386 glUseProgram(prog);
387
388 vertex_loc = glGetAttribLocation(prog, "vertex");
389 glEnableVertexAttribArray(vertex_loc);
390 glVertexAttribPointer(vertex_loc, 2, GL_FLOAT, GL_FALSE, 0, NULL);
391 glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
392 GL_STATIC_DRAW);
393
394 glUniform1i(glGetUniformLocation(prog, "tex"), 0);
395 glUniform2f(glGetUniformLocation(prog, "window_pixel_size"),
396 piglit_width, piglit_height);
397 }
398
399 enum piglit_result
piglit_display(void)400 piglit_display(void)
401 {
402 return piglit_run_selected_subtests(piglit_config->subtests,
403 piglit_config->selected_subtests,
404 piglit_config->num_selected_subtests,
405 PIGLIT_SKIP);
406 }
407
