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/*
* Copyright © 2010 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 rg-teximage-01.c
* Verify setting and getting image data for RED or RG formats
*
* Specify an RGBA image with a RED internal format. Read the image back as
* RGBA. Verify the red components read back match the source image and the
* green, blue, and alpha components are 0, 0, and 1, respectively.
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util-gl-common.h"
#include "rg-teximage-common.h"
#define WIDTH 256
#define HEIGHT 256
static float rgba_image[4 * WIDTH * HEIGHT];
static const GLenum internal_formats[] = {
GL_RED,
GL_R8,
GL_R16,
GL_RGBA,
};
GLuint tex[Elements(internal_formats)];
const unsigned num_tex = Elements(tex);
GLboolean pass = GL_TRUE;
PIGLIT_GL_TEST_MAIN(
WIDTH * Elements(tex) /*window_width*/,
HEIGHT /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
void
piglit_init(int argc, char **argv)
{
unsigned i;
GLfloat result[4 * WIDTH * HEIGHT];
piglit_require_extension("GL_ARB_texture_rg");
generate_rainbow_texture_data(WIDTH, HEIGHT, rgba_image);
glEnable(GL_TEXTURE_2D);
glGenTextures(Elements(tex), tex);
for (i = 0; i < Elements(internal_formats); i++) {
GLenum err;
glBindTexture(GL_TEXTURE_2D, tex[i]);
glTexImage2D(GL_TEXTURE_2D, 0, internal_formats[i],
WIDTH, HEIGHT, 0, GL_RGBA,
GL_FLOAT, rgba_image);
err = glGetError();
if (err) {
fprintf(stderr, "glTexImage2D(internalFormat = 0x%04x) "
"generated GL error 0x%04x\n",
internal_formats[i], err);
pass = GL_FALSE;
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
if (internal_formats[i] != GL_RGBA) {
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT,
result);
pass = compare_texture(rgba_image, result,
internal_formats[i], GL_RGBA,
(WIDTH * HEIGHT), GL_FALSE)
&& pass;
}
}
if (piglit_automatic)
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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