tests/fbo/fbo-copyteximage-simple.c

   1 /*
   2  * Copyright © 2009 Intel Corporation
   3  * Copyright © 2010 Red Hat, Inc.
   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  * Authors:
  25  *    Eric Anholt <eric@anholt.net>
  26  *    Owen Taylor <otaylor@fishsoup.net>
  27  *
  28  */
  29
  30 /** @file fbo-generatemipmap.c
  31  *
  32  * Tests that glCopyTexImage2D can be used to copy from a texture
  33  * into another texture.
  34  */
  35
  36 #include "piglit-util-gl.h"
  37
  38 #define TEX_WIDTH 256
  39 #define TEX_HEIGHT 256
  40
  41 PIGLIT_GL_TEST_CONFIG_BEGIN
  42
  43         config.supports_gl_compat_version = 10;
  44
  45         config.window_width = TEX_WIDTH;
  46         config.window_height = TEX_HEIGHT;
  47         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
  48         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  49
  50 PIGLIT_GL_TEST_CONFIG_END
  51
  52 static const float red[] =   {1, 0, 0, 0};
  53 static const float green[] = {0, 1, 0, 0};
  54 static const float blue[] =  {0, 0, 1, 0};
  55 static const float white[] = {1, 1, 1, 1};
  56
  57 static int
  58 create_fbo(void)
  59 {
  60         GLuint tex, copied_tex, fb;
  61         GLenum status;
  62
  63         glGenTextures(1, &tex);
  64         glBindTexture(GL_TEXTURE_2D, tex);
  65
  66         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
  67                      TEX_WIDTH, TEX_HEIGHT,
  68                      0,
  69                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  70
  71         if (!piglit_check_gl_error(GL_NO_ERROR))
  72                 piglit_report_result(PIGLIT_FAIL);
  73
  74         glGenFramebuffersEXT(1, &fb);
  75         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
  76         glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
  77                                   GL_COLOR_ATTACHMENT0_EXT,
  78                                   GL_TEXTURE_2D,
  79                                   tex,
  80                                   0);
  81         if (!piglit_check_gl_error(GL_NO_ERROR))
  82                 piglit_report_result(PIGLIT_FAIL);
  83
  84         status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
  85         if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
  86                 fprintf(stderr, "FBO incomplete\n");
  87                 piglit_report_result(PIGLIT_SKIP);
  88         }
  89
  90         glViewport(0, 0, TEX_WIDTH, TEX_HEIGHT);
  91         piglit_ortho_projection(TEX_WIDTH, TEX_HEIGHT, GL_FALSE);
  92
  93         glColor4fv(red);
  94         piglit_draw_rect(0, 0, TEX_WIDTH / 2, TEX_HEIGHT / 2);
  95         glColor4fv(green);
  96         piglit_draw_rect(TEX_WIDTH / 2, 0, TEX_WIDTH, TEX_HEIGHT / 2);
  97         glColor4fv(blue);
  98         piglit_draw_rect(0, TEX_HEIGHT / 2, TEX_WIDTH/2, TEX_HEIGHT);
  99         glColor4fv(white);
 100         piglit_draw_rect(TEX_WIDTH / 2, TEX_HEIGHT / 2, TEX_WIDTH, TEX_HEIGHT);
 101
 102         glGenTextures(1, &copied_tex);
 103         glBindTexture(GL_TEXTURE_2D, copied_tex);
 104         glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, TEX_WIDTH, TEX_HEIGHT, 0);
 105
 106         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
 107         glDeleteFramebuffersEXT(1, &fb);
 108         glDeleteTextures(1, &tex);
 109
 110         return copied_tex;
 111 }
 112
 113 enum piglit_result
 114 piglit_display(void)
 115 {
 116         GLboolean pass = GL_TRUE;
 117         GLuint tex;
 118         int x1 = TEX_WIDTH / 4;
 119         int x2 = TEX_WIDTH * 3 / 4;
 120         int y1 = TEX_HEIGHT / 4;
 121         int y2 = TEX_HEIGHT * 3 / 4;
 122
 123         glClearColor(0.5, 0.5, 0.5, 0.5);
 124         glClear(GL_COLOR_BUFFER_BIT);
 125
 126         tex = create_fbo();
 127         glViewport(0, 0, piglit_width, piglit_height);
 128         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 129
 130         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
 131
 132         glEnable(GL_TEXTURE_2D);
 133         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 134         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 135         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 136
 137         piglit_draw_rect_tex(0, 0, TEX_WIDTH, TEX_HEIGHT,
 138                              0, 0, 1, 1);
 139
 140         pass &= piglit_probe_pixel_rgb(x1, y1, red);
 141         pass &= piglit_probe_pixel_rgb(x2, y1, green);
 142         pass &= piglit_probe_pixel_rgb(x1, y2, blue);
 143         pass &= piglit_probe_pixel_rgb(x2, y2, white);
 144
 145         glDeleteTextures(1, &tex);
 146
 147         piglit_present_results();
 148
 149         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 150 }
 151
 152 void piglit_init(int argc, char **argv)
 153 {
 154         piglit_require_extension("GL_EXT_framebuffer_object");
 155 }