tests/fast_color_clear/clear-tex.c

   1 /* Copyright © 2020 Intel Corporation
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  */
  22
  23 /**
  24  * Check that drivers correctly handle the clear color when fast-clearing via
  25  * glClearTexImage.
  26  */
  27
  28 #include "piglit-util-gl.h"
  29
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32
  33 config.supports_gl_compat_version = 44;
  34
  35 PIGLIT_GL_TEST_CONFIG_END
  36
  37 enum piglit_result
  38 piglit_display(void)
  39 {
  40         return PIGLIT_FAIL;
  41 }
  42
  43 static void
  44 clear_tex(GLuint internalFormat, GLuint format, GLuint type,
  45           const void *clear_pix)
  46 {
  47         GLuint tex;
  48         glGenTextures(1, &tex);
  49         glBindTexture(GL_TEXTURE_2D, tex);
  50         glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, 32, 32, 0, format, type,
  51                      NULL);
  52         glClearTexImage(tex, 0, format, type, clear_pix);
  53
  54         if (glGetError() != GL_NO_ERROR)
  55                 piglit_report_result(PIGLIT_FAIL);
  56 }
  57
  58 static bool
  59 test_16bpc_base(const char *fmt, GLuint format, const void *pix,
  60                 const float *expected)
  61 {
  62         printf("Testing 16bpc %s\n", fmt);
  63         clear_tex(format, format, GL_UNSIGNED_SHORT, pix);
  64         return piglit_probe_texel_rgba(GL_TEXTURE_2D, 0, 0, 0, expected);
  65 }
  66
  67 void
  68 piglit_init(int argc, char **argv)
  69 {
  70         const uint16_t pix[] = {0x3fff, 0x7fff};
  71         const float a[] = {0.0, 0.0, 0.0, 0.5};
  72         const float la[] = {0.25, 0.0, 0.0, 0.5};
  73
  74         bool pass = true;
  75         pass &= test_16bpc_base("A", GL_ALPHA, &pix[1], a);
  76         pass &= test_16bpc_base("LA", GL_LUMINANCE_ALPHA, &pix[0], la);
  77
  78         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
  79 }