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/*
* Copyright © 2009,2010 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file pbo-teximage-tiling.c
*
* Tests that using a PBO as the unpack buffer for glTexImage works correctly
* when the stride is conveniently chosen to match what a tiled texture would
* be on Intel.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
static float red[] = {1.0, 0.0, 0.0, 0.0};
static float green[] = {0.0, 1.0, 0.0, 0.0};
static float blue[] = {0.0, 0.0, 1.0, 0.0};
static float white[] = {1.0, 1.0, 1.0, 0.0};
uint32_t red_packed = 0x00ff0000;
uint32_t green_packed = 0x0000ff00;
uint32_t blue_packed = 0x000000ff;
uint32_t white_packed = 0x00ffffff;
uint32_t *pixels;
GLuint pbo, tex;
glClearColor(0.5, 0.5, 0.5, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glGenBuffersARB(1, &pbo);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER, pbo);
glBufferDataARB(GL_PIXEL_UNPACK_BUFFER, 128 * 2 * sizeof(uint32_t),
NULL, GL_STREAM_DRAW_ARB);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 128);
pixels = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY_ARB);
pixels[0] = red_packed;
pixels[1] = green_packed;
pixels[128] = blue_packed;
pixels[129] = white_packed;
glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0,
GL_RGBA,
2, 2, 0,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, 0);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffersARB(1, &pbo);
glEnable(GL_TEXTURE_2D);
glBegin(GL_TRIANGLE_FAN);
glTexCoord2f(0.0, 0.0); glVertex2f(10, 10);
glTexCoord2f(1.0, 0.0); glVertex2f(20, 10);
glTexCoord2f(1.0, 1.0); glVertex2f(20, 20);
glTexCoord2f(0.0, 1.0); glVertex2f(10, 20);
glEnd();
glDeleteTextures(1, &tex);
pass &= piglit_probe_pixel_rgb(12, 12, red);
pass &= piglit_probe_pixel_rgb(18, 12, green);
pass &= piglit_probe_pixel_rgb(12, 18, blue);
pass &= piglit_probe_pixel_rgb(18, 18, white);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
static void reshape(int width, int height)
{
piglit_width = width;
piglit_height = height;
piglit_ortho_projection(width, height, GL_FALSE);
}
void
piglit_init(int argc, char **argv)
{
reshape(piglit_width, piglit_height);
piglit_require_extension("GL_ARB_pixel_buffer_object");
}
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