tests/spec/arb_copy_image/simple.c

   1 /*
   2  * Copyright 2014 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 DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file simple.c
  25  *
  26  * A simple test of glCopyImageSubData that copies a square from one
  27  * 2D texture to another and back.  This test exercises texture to texture,
  28  * texture to renderbuffer, renderbuffer to texture, and renderbuffer to
  29  * renderbuffer copies.  This test also exercises copying from one texture
  30  * or renderbuffer to the same texture or renderbuffer
  31  */
  32 #include "piglit-util-gl.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35
  36         config.supports_gl_compat_version = 13;
  37
  38         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  39         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  40
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 static const float green[3] = {0.0, 1.0, 0.0};
  44 static const float red[3] = {1.0, 0.0, 0.0};
  45 static const float blue[3] = {0.0, 0.0, 1.0};
  46
  47 int renderbuffers = 0;
  48
  49 void
  50 piglit_init(int argc, char **argv)
  51 {
  52         int i;
  53
  54         piglit_require_extension("GL_ARB_copy_image");
  55         piglit_require_extension("GL_EXT_framebuffer_object");
  56
  57         for (i = 0; i < argc; ++i) {
  58                 if (strcmp(argv[i], "--tex-to-tex") == 0)
  59                         renderbuffers = 0;
  60                 else if (strcmp(argv[i], "--tex-to-rb") == 0)
  61                         renderbuffers = 1;
  62                 else if (strcmp(argv[i], "--rb-to-rb") == 0)
  63                         renderbuffers = 2;
  64         }
  65 }
  66
  67 struct image {
  68         GLuint name, fbo;
  69         GLenum target;
  70 };
  71
  72 static void
  73 image_init(struct image *image, GLenum target, GLenum internalformat)
  74 {
  75         image->target = target;
  76
  77         glGenFramebuffersEXT(1, &image->fbo);
  78         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, image->fbo);
  79
  80         if (image->target == GL_RENDERBUFFER_EXT) {
  81                 glGenRenderbuffersEXT(1, &image->name);
  82                 glBindRenderbufferEXT(GL_RENDERBUFFER, image->name);
  83                 glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
  84                                          internalformat, 64, 64);
  85                 glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
  86                                              GL_COLOR_ATTACHMENT0_EXT,
  87                                              image->target, image->name);
  88         } else {
  89                 glGenTextures(1, &image->name);
  90                 glBindTexture(image->target, image->name);
  91                 glTexImage2D(image->target, 0, internalformat,
  92                              64, 64, 0, internalformat, GL_BYTE, NULL);
  93                 glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  94                 glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  95                 glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
  96                                           GL_COLOR_ATTACHMENT0_EXT,
  97                                           image->target, image->name, 0);
  98         }
  99 }
 100
 101 static void
 102 image_destroy(struct image *image)
 103 {
 104         if (image->target == GL_RENDERBUFFER_EXT)
 105                 glDeleteRenderbuffersEXT(1, &image->name);
 106         else
 107                 glDeleteTextures(1, &image->name);
 108
 109         glDeleteFramebuffers(1, &image->fbo);
 110 }
 111
 112 static void
 113 image_fill(struct image *image, const float *color)
 114 {
 115         glClearColor(color[0], color[1], color[2], 1.0f);
 116         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, image->fbo);
 117         glClear(GL_COLOR_BUFFER_BIT);
 118 }
 119
 120 static void
 121 image_draw(struct image *image, int x, int y)
 122 {
 123         if (image->target == GL_RENDERBUFFER_EXT) {
 124                 glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, image->fbo);
 125                 glBlitFramebufferEXT(0, 0, 64, 64, x, y, x + 64, y + 64,
 126                                      GL_COLOR_BUFFER_BIT, GL_NEAREST);
 127         } else {
 128                 /* Set up or GL environment for rendering */
 129                 piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 130                 glEnable(GL_TEXTURE_2D);
 131                 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 132
 133                 glBindTexture(image->target, image->name);
 134                 piglit_draw_rect_tex(x, y, 64, 64, 0, 0, 1, 1);
 135
 136                 glDisable(GL_TEXTURE_2D);
 137         }
 138 }
 139
 140 enum piglit_result
 141 piglit_display(void)
 142 {
 143         bool pass = true;
 144         struct image images[2];
 145
 146         if (renderbuffers >= 1)
 147                 images[0].target = GL_RENDERBUFFER_EXT;
 148         else
 149                 images[0].target = GL_TEXTURE_2D;
 150
 151         if (renderbuffers == 2)
 152                 images[1].target = GL_RENDERBUFFER_EXT;
 153         else
 154                 images[1].target = GL_TEXTURE_2D;
 155
 156         image_init(&images[0], images[0].target, GL_RGB);
 157         image_init(&images[1], images[1].target, GL_RGB);
 158
 159         image_fill(&images[0], green);
 160         image_fill(&images[1], red);
 161
 162         glCopyImageSubData(images[0].name, images[0].target, 0, 0, 0, 0,
 163                            images[1].name, images[1].target, 0, 17, 11, 0,
 164                            32, 32, 1);
 165         pass &= piglit_check_gl_error(GL_NO_ERROR);
 166
 167         /* We should now have a green square on red */
 168         glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, images[1].fbo);
 169         pass &= piglit_probe_rect_rgb(17, 11, 32, 32, green);
 170         pass &= piglit_probe_rect_rgb(0, 0, 64, 11, red);
 171         pass &= piglit_probe_rect_rgb(0, 11, 17, 32, red);
 172         pass &= piglit_probe_rect_rgb(49, 11, 15, 32, red);
 173         pass &= piglit_probe_rect_rgb(0, 43, 64, 21, red);
 174
 175         image_fill(&images[0], blue);
 176         glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, images[0].fbo);
 177         pass &= piglit_probe_rect_rgb(0, 0, 64, 64, blue);
 178
 179         glCopyImageSubData(images[1].name, images[1].target, 0, 17, 11, 0,
 180                            images[0].name, images[0].target, 0, 0, 32, 0,
 181                            32, 32, 1);
 182         pass &= piglit_check_gl_error(GL_NO_ERROR);
 183
 184         /* This should be a green square on blue (no red!) */
 185         glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, images[0].fbo);
 186         pass &= piglit_probe_rect_rgb(0, 32, 32, 32, green);
 187         pass &= piglit_probe_rect_rgb(0, 0, 64, 32, blue);
 188         pass &= piglit_probe_rect_rgb(32, 32, 32, 32, blue);
 189
 190         glCopyImageSubData(images[0].name, images[0].target, 0, 0, 32, 0,
 191                            images[0].name, images[0].target, 0, 32, 0, 0,
 192                            32, 32, 1);
 193         pass &= piglit_check_gl_error(GL_NO_ERROR);
 194
 195         /* This should be a blue/green checkerboard */
 196         glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, images[0].fbo);
 197         pass &= piglit_probe_rect_rgb(0, 0, 32, 32, blue);
 198         pass &= piglit_probe_rect_rgb(0, 32, 32, 32, green);
 199         pass &= piglit_probe_rect_rgb(32, 0, 32, 32, green);
 200         pass &= piglit_probe_rect_rgb(32, 32, 32, 32, blue);
 201
 202         if (!piglit_automatic) {
 203                 glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT,
 204                                      piglit_winsys_fbo);
 205
 206                 image_draw(&images[1], 0, 0);
 207                 image_draw(&images[0], 64, 0);
 208
 209                 piglit_present_results();
 210         }
 211
 212         image_destroy(&images[0]);
 213         image_destroy(&images[1]);
 214
 215         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 216 }