tests/texturing/copyteximage-border.c

   1 /*
   2  * Copyright © 2011 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 /**
  25  * Test that glCopyTexImage() into a texture with a texture border
  26  * gets correct non-border texels.
  27  */
  28
  29
  30 #include "piglit-util-gl.h"
  31
  32 /* Size of the body of the texture, not counting border. */
  33 #define TEX_SIZE 64
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36
  37         config.supports_gl_compat_version = 10;
  38
  39         config.window_width = TEX_SIZE*2+30;
  40         config.window_height = TEX_SIZE+20;
  41         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  42         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  43
  44 PIGLIT_GL_TEST_CONFIG_END
  45
  46 enum piglit_result
  47 piglit_display(void)
  48 {
  49         bool pass = true;
  50         int quad_w = TEX_SIZE / 2;
  51         int quad_h = TEX_SIZE / 2;
  52         float red[]   = {1.0, 0.0, 0.0, 0.0};
  53         float green[] = {0.0, 1.0, 0.0, 0.0};
  54         float blue[]  = {0.0, 0.0, 1.0, 0.0};
  55         float white[] = {1.0, 1.0, 1.0, 0.0};
  56         GLuint tex;
  57         int x, y;
  58
  59         piglit_ortho_projection(piglit_width, piglit_height, false);
  60
  61         glClearColor(0.5, 0.5, 0.5, 0.5);
  62         glClear(GL_COLOR_BUFFER_BIT);
  63
  64         x = 10;
  65         y = 10;
  66
  67         glColor4fv(red);
  68         piglit_draw_rect(x, y, quad_w, quad_h);
  69         glColor4fv(green);
  70         piglit_draw_rect(x + quad_w, y, quad_w, quad_h);
  71         glColor4fv(blue);
  72         piglit_draw_rect(x, y + quad_h, quad_w, quad_h);
  73         glColor4fv(white);
  74         piglit_draw_rect(x + quad_w, y + quad_h, quad_w, quad_h);
  75
  76         glGenTextures(1, &tex);
  77         glBindTexture(GL_TEXTURE_2D, tex);
  78         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  79         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  80
  81         /* Copy the rectangle drawn to our texture, with a 1-pixel
  82          * border around it.
  83          */
  84         glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
  85                          x - 1, y - 1,
  86                          TEX_SIZE + 2, TEX_SIZE + 2,
  87                          1);
  88
  89         x = 20 + TEX_SIZE;
  90         y = 10;
  91
  92         glEnable(GL_TEXTURE_2D);
  93         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
  94         piglit_draw_rect_tex(x, y, TEX_SIZE, TEX_SIZE,
  95                              0, 0, 1, 1);
  96         glDisable(GL_TEXTURE_2D);
  97         glDeleteTextures(1, &tex);
  98
  99         pass = piglit_probe_rect_rgba(x, y,
 100                                       quad_w, quad_h, red) && pass;
 101         pass = piglit_probe_rect_rgba(x + quad_w, y,
 102                                       quad_w, quad_h, green) && pass;
 103         pass = piglit_probe_rect_rgba(x, y + quad_h,
 104                                       quad_w, quad_h, blue) && pass;
 105         pass = piglit_probe_rect_rgba(x + quad_w, y + quad_h,
 106                                       quad_w, quad_h, white) && pass;
 107
 108         piglit_present_results();
 109
 110         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 111 }
 112
 113 void
 114 piglit_init(int argc, char **argv)
 115 {
 116 }