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/*
* Copyright © 2011 Henri Verbeet <hverbeet@gmail.com>
*
* 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 fbo-srgb-blit.c
*
* Test FBO blits between sRGB and linear textures. Blits should happen in
* linear color space.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
128 /*window_width*/,
128 /*window_height*/,
GLUT_DOUBLE | GLUT_RGB)
static GLuint src_tex, dst_tex;
static GLuint src_fbo, dst_fbo;
static uint32_t *tex_data;
static bool has_fb_srgb;
static void blit_rect(GLenum src_format, GLenum dst_format, float x, float y, float w, float h, bool stretch)
{
glBindTexture(GL_TEXTURE_2D, src_tex);
glTexImage2D(GL_TEXTURE_2D, 0, src_format, 16, 16, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, tex_data);
glBindTexture(GL_TEXTURE_2D, dst_tex);
glTexImage2D(GL_TEXTURE_2D, 0, dst_format, 16, 16, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, src_fbo);
glFramebufferTexture2DEXT(GL_READ_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, src_tex, 0);
if (has_fb_srgb)
glEnable(GL_FRAMEBUFFER_SRGB_EXT);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, dst_fbo);
glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, dst_tex, 0);
if (stretch)
{
glBlitFramebufferEXT(7, 7, 9, 9, 0, 0, 8, 16, GL_COLOR_BUFFER_BIT, GL_LINEAR);
if (has_fb_srgb)
glDisable(GL_FRAMEBUFFER_SRGB_EXT);
glBlitFramebufferEXT(7, 7, 9, 9, 8, 0, 16, 16, GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
else
{
glBlitFramebufferEXT(0, 0, 8, 16, 0, 0, 8, 16, GL_COLOR_BUFFER_BIT, GL_LINEAR);
if (has_fb_srgb)
glDisable(GL_FRAMEBUFFER_SRGB_EXT);
glBlitFramebufferEXT(8, 0, 16, 16, 8, 0, 16, 16, GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glBindTexture(GL_TEXTURE_2D, dst_tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
piglit_draw_rect_tex(x, y, w, h, 0.0f, 0.0f, 1.0f, 1.0f);
}
enum piglit_result piglit_display(void)
{
static const struct
{
int x;
int y;
float color[3];
}
expected[] =
{
{ 16, 32, {0.11f, 0.16f, 0.21f}},
{ 48, 32, {0.11f, 0.16f, 0.21f}},
{ 80, 32, {0.37f, 0.44f, 0.50f}},
{112, 32, {0.37f, 0.44f, 0.50f}},
{ 16, 96, {0.37f, 0.44f, 0.50f}},
{ 48, 96, {0.37f, 0.44f, 0.50f}},
{ 80, 96, {0.11f, 0.16f, 0.21f}},
{112, 96, {0.11f, 0.16f, 0.21f}},
};
GLboolean pass = GL_TRUE;
unsigned int i;
blit_rect(GL_RGBA8, GL_SRGB8_ALPHA8, -1.0f, -1.0f, 1.0f, 1.0f, false);
blit_rect(GL_SRGB8_ALPHA8, GL_RGBA8, 0.0f, -1.0f, 1.0f, 1.0f, false);
blit_rect(GL_SRGB8_ALPHA8, GL_RGBA8, -1.0f, 0.0f, 1.0f, 1.0f, true);
blit_rect(GL_RGBA8, GL_SRGB8_ALPHA8, 0.0f, 0.0f, 1.0f, 1.0f, true);
for (i = 0; i < sizeof(expected) / sizeof(*expected); ++i)
{
pass &= piglit_probe_pixel_rgb(expected[i].x, expected[i].y, expected[i].color);
}
glutSwapBuffers();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void piglit_init(int argc, char **argv)
{
unsigned int i;
piglit_require_extension("GL_EXT_framebuffer_object");
piglit_require_extension("GL_EXT_framebuffer_blit");
piglit_require_extension("GL_EXT_texture_sRGB");
if (piglit_is_extension_supported("GL_EXT_framebuffer_sRGB"))
has_fb_srgb = true;
tex_data = malloc(16 * 16 * sizeof(*tex_data));
for (i = 0; i < 16 * 16; ++i)
{
tex_data[i] = 0xff5f6f7f;
}
glGenTextures(1, &src_tex);
glGenTextures(1, &dst_tex);
glGenFramebuffersEXT(1, &src_fbo);
glGenFramebuffersEXT(1, &dst_fbo);
}
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