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/*
* Copyright (c) 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/** @file texsubimage.c
*
* A test of using glTexSubImage2D to update a region of a
* depth-stencil texture. A 4x4 depth-stencil is created and then two
* of the texels are set using different values. The whole texture is
* read back using glGetTexImage and compared to the expected values.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 13;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
static GLuint
create_texture(void)
{
static const GLubyte data[] = {
0xff, 0xff, 0xff, 0xff,
0x04, 0x05, 0x06, 0x07,
0xff, 0xff, 0xff, 0xff,
0x0c, 0x0d, 0x0e, 0x0f,
};
GLuint tex;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D,
0, /* level */
GL_DEPTH24_STENCIL8_EXT,
2, 2, /* width/height */
0, /* border */
GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT,
data);
return tex;
}
static void
update_texture(void)
{
static const GLubyte bottom_left_pixel[] = {
0x00, 0x01, 0x02, 0x03
};
static const GLubyte top_left_pixel[] = {
0x08, 0x09, 0x0a, 0x0b
};
glTexSubImage2D(GL_TEXTURE_2D,
0, /* level */
0, 0, /* x/y */
1, 1, /* width/height */
GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT,
bottom_left_pixel);
glTexSubImage2D(GL_TEXTURE_2D,
0, /* level */
0, 1, /* x/y */
1, 1, /* width/height */
GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT,
top_left_pixel);
}
static bool
check_texels(void)
{
GLubyte texels[2 * 2 * 4];
int i;
glGetTexImage(GL_TEXTURE_2D,
0, /* level */
GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT,
texels);
for (i = 0; i < sizeof texels; i++)
if (texels[i] != i)
return false;
return true;
}
void
piglit_init(int argc, char **argv)
{
GLuint tex;
bool pass;
/* We can create depth/stencil textures if either:
* 1. We have GL 3.0 or later
* 2. We have GL_EXT_packed_depth_stencil and GL_ARB_depth_texture
*/
if (piglit_get_gl_version() < 30
&& !(piglit_is_extension_supported("GL_EXT_packed_depth_stencil") &&
piglit_is_extension_supported("GL_ARB_depth_texture"))) {
printf("OpenGL 3.0 or GL_EXT_packed_depth_stencil + "
"GL_ARB_depth_texture is required.\n");
piglit_report_result(PIGLIT_SKIP);
}
tex = create_texture();
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
update_texture();
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
glBindTexture(GL_TEXTURE_2D, tex);
pass = check_texels();
glBindTexture(GL_TEXTURE_2D, 0);
glDeleteTextures(1, &tex);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* unused */
return PIGLIT_FAIL;
}
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