tests/fbo/fbo-copyteximage.c

   1 /*
   2  * Copyright © 2009 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 /** @file fbo-generatemipmap.c
  29  *
  30  * Tests that glCopyTexSubImage work to a mipmap level of a NPOT texture.
  31  * This tries to catch a bug with the Intel driver and texture tiling.
  32  */
  33
  34 #include "piglit-util-gl.h"
  35
  36 #define TEX_WIDTH 254
  37 #define TEX_HEIGHT 254
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_compat_version = 10;
  42
  43         config.window_width = 700;
  44         config.window_height = 300;
  45         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
  46         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  47
  48 PIGLIT_GL_TEST_CONFIG_END
  49
  50 static const float red[] =   {1, 0, 0, 0};
  51 static const float green[] = {0, 1, 0, 0};
  52 static const float blue[] =  {0, 0, 1, 0};
  53 static const float white[] = {1, 1, 1, 1};
  54
  55 static int
  56 create_fbo(void)
  57 {
  58         GLuint tex, copied_tex, fb;
  59         GLenum status;
  60         int i, dim;
  61         int draw_w = TEX_WIDTH / 2, draw_h = TEX_HEIGHT / 2;
  62
  63         glGenTextures(1, &tex);
  64         glBindTexture(GL_TEXTURE_2D, tex);
  65
  66         for (i = 0, dim = TEX_WIDTH; dim >0; i++, dim /= 2) {
  67                 glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA,
  68                              dim, dim,
  69                              0,
  70                              GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  71         }
  72         if (!piglit_check_gl_error(GL_NO_ERROR))
  73                 piglit_report_result(PIGLIT_FAIL);
  74
  75         /* Draw into the second level. */
  76         glGenFramebuffersEXT(1, &fb);
  77         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
  78         glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
  79                                   GL_COLOR_ATTACHMENT0_EXT,
  80                                   GL_TEXTURE_2D,
  81                                   tex,
  82                                   1);
  83         if (!piglit_check_gl_error(GL_NO_ERROR))
  84                 piglit_report_result(PIGLIT_FAIL);
  85
  86         status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
  87         if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
  88                 fprintf(stderr, "FBO incomplete\n");
  89                 piglit_report_result(PIGLIT_SKIP);
  90         }
  91
  92         glViewport(0, 0, draw_w, draw_h);
  93         piglit_ortho_projection(draw_w, draw_h, GL_FALSE);
  94
  95         glColor4fv(red);
  96         piglit_draw_rect(0, 0, draw_w / 2, draw_h / 2);
  97         glColor4fv(green);
  98         piglit_draw_rect(draw_w / 2, 0, draw_w, draw_h / 2);
  99         glColor4fv(blue);
 100         piglit_draw_rect(0, draw_h / 2, draw_w/2, draw_h);
 101         glColor4fv(white);
 102         piglit_draw_rect(draw_w / 2, draw_h / 2, draw_w, draw_h);
 103
 104         glGenTextures(1, &copied_tex);
 105         glBindTexture(GL_TEXTURE_2D, copied_tex);
 106         glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, draw_w, draw_h, 0);
 107
 108         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
 109         glDeleteFramebuffersEXT(1, &fb);
 110         glDeleteTextures(1, &tex);
 111
 112         return copied_tex;
 113 }
 114
 115 enum piglit_result
 116 piglit_display(void)
 117 {
 118         GLboolean pass = GL_TRUE;
 119         GLuint tex;
 120         int x1 = 10 + TEX_WIDTH / 4;
 121         int x2 = 10 + TEX_WIDTH * 3 / 4;
 122         int y1 = 10 + TEX_HEIGHT / 4;
 123         int y2 = 10 + TEX_HEIGHT * 3 / 4;
 124
 125         glClearColor(0.5, 0.5, 0.5, 0.5);
 126         glClear(GL_COLOR_BUFFER_BIT);
 127
 128         tex = create_fbo();
 129         glViewport(0, 0, piglit_width, piglit_height);
 130         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 131
 132         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
 133
 134         glEnable(GL_TEXTURE_2D);
 135         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 136         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 137         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 138
 139         piglit_draw_rect_tex(10, 10, TEX_WIDTH, TEX_HEIGHT,
 140                              0, 0, 1, 1);
 141
 142         pass &= piglit_probe_pixel_rgb(x1, y1, red);
 143         pass &= piglit_probe_pixel_rgb(x2, y1, green);
 144         pass &= piglit_probe_pixel_rgb(x1, y2, blue);
 145         pass &= piglit_probe_pixel_rgb(x2, y2, white);
 146
 147         glDeleteTextures(1, &tex);
 148         glDisable(GL_TEXTURE_2D);
 149
 150         piglit_present_results();
 151
 152         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 153 }
 154
 155 void piglit_init(int argc, char **argv)
 156 {
 157         piglit_require_extension("GL_EXT_framebuffer_object");
 158         piglit_require_extension("GL_ARB_texture_non_power_of_two");
 159 }