tests/spec/arb_texture_view/rendering-layers-image.c

   1 /* Copyright © 2018 Danylo Piliaiev
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  */
  22
  23 /**
  24  * Tests GL_ARB_texture_view interaction with ARB_shader_image_load_store.
  25  * Creates texture maps with different solid colors for each layer,
  26  * reads the framebuffer to ensure the rendered color is correct
  27  * and verifies that image has expected layers count.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31 #include "common.h"
  32
  33 PIGLIT_GL_TEST_CONFIG_BEGIN
  34
  35         config.supports_gl_core_version = 32;
  36
  37         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  38         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  39
  40 PIGLIT_GL_TEST_CONFIG_END
  41
  42 struct test_info
  43 {
  44         GLenum target;
  45         const char* uniform_type;
  46         const char* img_layers_dimension;
  47         const char* img_access;
  48         int program;
  49 };
  50
  51 struct test_info tests[] = {
  52         {GL_TEXTURE_1D_ARRAY, "image1DArray", "y", "ivec2(0, tex_layer)", -1},
  53         {GL_TEXTURE_2D_ARRAY, "image2DArray", "z", "ivec3(0, 0, tex_layer)", -1},
  54         {GL_TEXTURE_CUBE_MAP_ARRAY, "imageCubeArray", "z * 6", "ivec3(0, 0, tex_layer)", -1},
  55 };
  56
  57 static bool
  58 test_render_layers(const struct test_info *test)
  59 {
  60         GLuint tex;
  61         const GLint width = 16, height = 16, layers = 12;
  62         const GLint num_layers[] = {7, 11, 2, 4};
  63         bool pass = true;
  64
  65         glUseProgram(test->program);
  66
  67         const GLint expected_layers_uniform = glGetUniformLocation(test->program, "expected_layers");
  68
  69         glGenTextures(1, &tex);
  70         glActiveTexture(GL_TEXTURE0);
  71         glBindTexture(test->target, tex);
  72
  73         if (test->target == GL_TEXTURE_1D_ARRAY) {
  74                 glTexStorage2D(test->target, 1, GL_RGBA8, width, layers);
  75         } else {
  76                 glTexStorage3D(test->target, 1, GL_RGBA8, width, height, layers);
  77         }
  78
  79         /* Load each array layer with a different color texture */
  80         for (GLint l = 0; l < layers; l++) {
  81                 GLubyte *buf = create_solid_image(width, height, 1, 4, l);
  82
  83                 if (buf != NULL) {
  84                         if (test->target == GL_TEXTURE_1D_ARRAY) {
  85                                 glTexSubImage2D(test->target, 0, 0, l,
  86                                                 width, 1, GL_RGBA,
  87                                                 GL_UNSIGNED_BYTE, buf);
  88                         } else {
  89                                 glTexSubImage3D(test->target, 0, 0, 0, l,
  90                                                 width, height, 1, GL_RGBA,
  91                                                 GL_UNSIGNED_BYTE, buf);
  92                         }
  93                         free(buf);
  94                 }
  95
  96         }
  97
  98         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
  99
 100         /* Create a view of texture with restricted layers, bind it as image and draw a quad
 101          * using a single layer in the view range which varies every loop, check image's layers
 102          * count in a shader.
 103          */
 104         for (GLint first_layer = 0; first_layer < ARRAY_SIZE(num_layers); first_layer++) {
 105                 const int total_layers = test->target == GL_TEXTURE_CUBE_MAP_ARRAY ? 6 : num_layers[first_layer];
 106
 107                 GLuint view_tex;
 108                 glGenTextures(1, &view_tex);
 109                 glTextureView(view_tex, test->target, tex,  GL_RGBA8,
 110                                         0, 1, first_layer, total_layers);
 111
 112                 glActiveTexture(GL_TEXTURE0);
 113                 glBindImageTexture(0, view_tex, 0, GL_TRUE, 0, GL_READ_ONLY, GL_RGBA8);
 114
 115                 glUniform1i(expected_layers_uniform, total_layers);
 116
 117                 glClear(GL_COLOR_BUFFER_BIT);
 118
 119                 draw_3d_depth(-1.0, -1.0, 2.0, 2.0, total_layers - 1);
 120
 121                 const int expected_layer = first_layer + total_layers - 1;
 122
 123                 GLfloat expected[4];
 124                 expected[0] = Colors[expected_layer][0] / 255.0;
 125                 expected[1] = Colors[expected_layer][1] / 255.0;
 126                 expected[2] = Colors[expected_layer][2] / 255.0;
 127                 expected[3] = 1.0;
 128
 129                 const int p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected);
 130
 131                 piglit_present_results();
 132
 133                 if (!p) {
 134                         printf("Wrong color for view min layer %d, expected layer %d\n",
 135                                    first_layer, expected_layer);
 136                         pass = false;
 137                 }
 138                 glDeleteTextures(1, &view_tex);
 139         }
 140
 141         glDeleteTextures(1, &tex);
 142         return pass;
 143 }
 144
 145 enum piglit_result
 146 piglit_display(void)
 147 {
 148         bool pass = true;
 149         for (int test_idx = 0; test_idx < ARRAY_SIZE(tests); test_idx++) {
 150                 const struct test_info *test = &tests[test_idx];
 151
 152                 const bool subtest_pass = test_render_layers(test);
 153
 154                 piglit_report_subtest_result(subtest_pass ? PIGLIT_PASS : PIGLIT_FAIL,
 155                                              "layers rendering of %s", test->uniform_type);
 156                 pass = pass && subtest_pass;
 157         }
 158         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 159         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 160 }
 161
 162 static const char *vs =
 163         "#version 150\n"
 164         "in vec4 piglit_vertex;\n"
 165         "in vec2 piglit_texcoord;\n"
 166         "flat out int tex_layer;\n"
 167         "void main() { \n"
 168         "       gl_Position = vec4(piglit_vertex.xy, 0.0, 1.0);\n"
 169         "       tex_layer = int(piglit_vertex.z);\n"
 170         "}\n";
 171
 172 static const char *fs_template =
 173         "#version 150\n"
 174         "#extension GL_ARB_shader_image_size : enable\n"
 175         "#extension GL_ARB_shading_language_420pack : enable\n"
 176         "#extension GL_ARB_shader_image_load_store : enable\n"
 177         "flat in int tex_layer;\n"
 178         "layout(binding = 0, rgba8) uniform %s img;\n"
 179         "uniform int expected_layers;\n"
 180         "out vec4 color;\n"
 181         "void main() { \n"
 182         "   if (imageSize(img).%s == expected_layers)\n"
 183         "               color = vec4(imageLoad(img, %s).rgb, 1.0);\n"
 184         "       else\n"
 185         "               color = vec4(0.0);\n"
 186         "}\n";
 187
 188 void
 189 piglit_init(int argc, char **argv)
 190 {
 191         piglit_require_extension("GL_ARB_texture_storage");
 192         piglit_require_extension("GL_ARB_texture_view");
 193         piglit_require_extension("GL_ARB_shader_image_load_store");
 194         piglit_require_extension("GL_ARB_shader_image_size");
 195
 196         for (int test_idx = 0; test_idx < ARRAY_SIZE(tests); test_idx++) {
 197                 struct test_info *test = &tests[test_idx];
 198
 199                 char fs[512];
 200                 snprintf(fs, sizeof(fs), fs_template, test->uniform_type,
 201                          test->img_layers_dimension, test->img_access);
 202                 test->program = piglit_build_simple_program(vs, fs);
 203         }
 204 }