tests/spec/arb_clear_texture/texview.c

   1 /*
   2  * Copyright 2015 Ilia Mirkin
   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 DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file texview.c
  25  *
  26  * A test to make sure that ARB_copy_image respects texture views on
  27  * both the source and destination ends.
  28  */
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32         config.supports_gl_compat_version = 13;
  33         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  34         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  35 PIGLIT_GL_TEST_CONFIG_END
  36
  37 static const float green[4] = {0.0, 1.0, 0.0, 1.0};
  38 static const float red[4] = {1.0, 0.0, 0.0, 1.0};
  39
  40 static bool
  41 test_2d(void)
  42 {
  43         bool pass = true;
  44         GLuint src;
  45         float red4[16];
  46         int i, j;
  47
  48         memcpy(&red4[0], red, sizeof(red));
  49         memcpy(&red4[4], red, sizeof(red));
  50         memcpy(&red4[8], red, sizeof(red));
  51         memcpy(&red4[12], red, sizeof(red));
  52
  53         glGenTextures(1, &src);
  54
  55         glBindTexture(GL_TEXTURE_2D, src);
  56         glTexStorage2D(GL_TEXTURE_2D, 2, GL_RGBA8, 2, 2);
  57
  58         for (i = 0; i < 2; i++) {
  59                 GLuint view;
  60
  61                 /* reset src to red */
  62                 glBindTexture(GL_TEXTURE_2D, src);
  63                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 2, 2,
  64                                 GL_RGBA, GL_FLOAT, red4);
  65                 glTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 1, 1,
  66                                 GL_RGBA, GL_FLOAT, red);
  67
  68                 /* create a single-level view */
  69                 glGenTextures(1, &view);
  70                 glTextureView(view, GL_TEXTURE_2D, src,
  71                               GL_RGBA8, i, 1, 0, 1);
  72
  73                 glClearTexImage(view, 0, GL_RGBA, GL_FLOAT, green);
  74
  75                 /* check that the i'th level is cleared while others aren't */
  76                 for (j = 0; j < 2; j++) {
  77                         pass &= piglit_probe_texel_rect_rgba(
  78                                 GL_TEXTURE_2D, j,
  79                                 0, 0, 2 >> j, 2 >> j,
  80                                 j == i ? green : red);
  81                 }
  82                 glDeleteTextures(1, &view);
  83         }
  84
  85         glDeleteTextures(1, &src);
  86         return pass;
  87 }
  88
  89 static bool
  90 test_2d_array(void)
  91 {
  92         bool pass = true;
  93         GLuint src;
  94         float red2[8];
  95         int i, j;
  96
  97         memcpy(&red2[0], red, sizeof(red));
  98         memcpy(&red2[4], red, sizeof(red));
  99
 100         glGenTextures(1, &src);
 101
 102         glBindTexture(GL_TEXTURE_2D_ARRAY, src);
 103         glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, 1, 1, 2);
 104
 105         for (i = 0; i < 2; i++) {
 106                 GLuint view;
 107
 108                 /* reset src to red */
 109                 glBindTexture(GL_TEXTURE_2D_ARRAY, src);
 110                 glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0,
 111                                 1, 1, 2,
 112                                 GL_RGBA, GL_FLOAT, red2);
 113
 114                 /* create view of the layer1 */
 115                 glGenTextures(1, &view);
 116                 glTextureView(view, GL_TEXTURE_2D_ARRAY, src,
 117                               GL_RGBA8, 0, 1, i, 1);
 118
 119                 glClearTexImage(view, 0, GL_RGBA, GL_FLOAT, green);
 120
 121                 /* check that the i'th layer is cleared while others aren't */
 122                 for (j = 0; j < 2; j++) {
 123                         pass &= piglit_probe_texel_volume_rgba(
 124                                 GL_TEXTURE_2D_ARRAY, 0,
 125                                 0, 0, j, 1, 1, 1,
 126                                 j == i ? green : red);
 127                 }
 128                 glDeleteTextures(1, &view);
 129         }
 130
 131         glDeleteTextures(1, &src);
 132         return pass;
 133 }
 134
 135 void
 136 piglit_init(int argc, char **argv)
 137 {
 138         bool pass = true;
 139         piglit_require_extension("GL_ARB_clear_texture");
 140         piglit_require_extension("GL_ARB_texture_view");
 141         piglit_require_extension("GL_ARB_texture_storage");
 142
 143         pass &= test_2d();
 144         if (piglit_is_extension_supported("GL_EXT_texture_array"))
 145                 pass &= test_2d_array();
 146
 147         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 148 }
 149
 150 enum piglit_result
 151 piglit_display(void)
 152 {
 153         return PIGLIT_FAIL;
 154 }