tests/spec/ext_clear_texture/texview.c

   1 /*
   2  * Copyright 2015 Ilia Mirkin
   3  * Copyright (c) 2021 Collabora Ltd
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 /** @file texview.c
  26  *
  27  * A test to make sure that EXT_clear_texture respects texture views
  28  */
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32         config.supports_gl_es_version = 31;
  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 GLubyte red[4] = {255, 0, 0, 255};
  38
  39 static const GLfloat green_test[4] = {0.0, 1.0, 0, 1.0};
  40 static const GLfloat red_test[4] = {1.0, 0, 0, 1.0};
  41
  42
  43 static bool
  44 test_2d(void)
  45 {
  46         bool pass = true;
  47         GLuint src;
  48         GLubyte red4[16];
  49         int i, j;
  50
  51         memcpy(&red4[0], red, sizeof(red));
  52         memcpy(&red4[4], red, sizeof(red));
  53         memcpy(&red4[8], red, sizeof(red));
  54         memcpy(&red4[12], red, sizeof(red));
  55
  56         glGenTextures(1, &src);
  57
  58         glBindTexture(GL_TEXTURE_2D, src);
  59         glTexStorage2D(GL_TEXTURE_2D, 2, GL_RGBA8, 2, 2);
  60
  61         for (i = 0; i < 2; i++) {
  62                 GLuint view;
  63
  64                 /* reset src to red */
  65                 glBindTexture(GL_TEXTURE_2D, src);
  66                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 2, 2,
  67                                 GL_RGBA, GL_UNSIGNED_BYTE, red4);
  68                 glTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, 1, 1,
  69                                 GL_RGBA, GL_UNSIGNED_BYTE, red);
  70
  71                 /* create a single-level view */
  72                 glGenTextures(1, &view);
  73                 glTextureView(view, GL_TEXTURE_2D, src,
  74                               GL_RGBA8, i, 1, 0, 1);
  75
  76                 glClearTexImageEXT(view, 0, GL_RGBA, GL_FLOAT, green_test);
  77
  78                 /* check that the i'th level is cleared while others aren't */
  79                 for (j = 0; j < 2; j++) {
  80                         pass &= piglit_probe_texel_rect_rgba(
  81                                 GL_TEXTURE_2D, j,
  82                                 0, 0, 2 >> j, 2 >> j,
  83                                 j == i ? green_test : red_test);
  84                 }
  85                 glDeleteTextures(1, &view);
  86         }
  87
  88         glDeleteTextures(1, &src);
  89         return pass;
  90 }
  91
  92 static bool
  93 test_2d_array(void)
  94 {
  95         bool pass = true;
  96         GLuint src;
  97         float red2[8];
  98         int i, j;
  99
 100         memcpy(&red2[0], red, sizeof(red));
 101         memcpy(&red2[4], red, sizeof(red));
 102
 103         glGenTextures(1, &src);
 104
 105         glBindTexture(GL_TEXTURE_2D_ARRAY, src);
 106         glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, 1, 1, 2);
 107
 108         for (i = 0; i < 2; i++) {
 109                 GLuint view;
 110
 111                 /* reset src to red */
 112                 glBindTexture(GL_TEXTURE_2D_ARRAY, src);
 113                 glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0,
 114                                 1, 1, 2,
 115                                 GL_RGBA, GL_UNSIGNED_BYTE, red2);
 116
 117                 /* create view of the layer1 */
 118                 glGenTextures(1, &view);
 119                 glTextureView(view, GL_TEXTURE_2D_ARRAY, src,
 120                               GL_RGBA8, 0, 1, i, 1);
 121
 122                 glClearTexImageEXT(view, 0, GL_RGBA, GL_FLOAT, green_test);
 123
 124                 /* check that the i'th layer is cleared while others aren't */
 125                 for (j = 0; j < 2; j++) {
 126                         pass &= piglit_probe_texel_volume_rgba(
 127                                 GL_TEXTURE_2D_ARRAY, 0,
 128                                 0, 0, j, 1, 1, 1,
 129                                 j == i ? green_test : red_test);
 130                 }
 131                 glDeleteTextures(1, &view);
 132         }
 133
 134         glDeleteTextures(1, &src);
 135         return pass;
 136 }
 137
 138 void
 139 piglit_init(int argc, char **argv)
 140 {
 141         bool pass = true;
 142         piglit_require_extension("GL_EXT_clear_texture");
 143         piglit_require_extension("GL_OES_texture_view");
 144
 145         pass &= test_2d();
 146         if (piglit_is_extension_supported("GL_EXT_texture_array"))
 147                 pass &= test_2d_array();
 148
 149         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 150 }
 151
 152 enum piglit_result
 153 piglit_display(void)
 154 {
 155         return PIGLIT_FAIL;
 156 }