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/*
* Copyright © 2012 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 copy-pixels.c
*
* Test to verify glCopyPixels with GL_COLOR, GL_DEPTH and GL_STENCIL
*
* Author: Anuj Phogat
*/
#include "piglit-util-gl-common.h"
#define IMAGE_WIDTH 16
#define IMAGE_HEIGHT 16
PIGLIT_GL_TEST_MAIN(
32 /*window_width*/,
32 /*window_height*/,
PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_ALPHA | PIGLIT_GL_VISUAL_STENCIL | PIGLIT_GL_VISUAL_DEPTH);
enum piglit_result
piglit_display(void)
{
GLint i, j;
GLuint width = 16, height = 16;
GLint x = 12, y = 12;
GLfloat buf[IMAGE_WIDTH][IMAGE_HEIGHT];
GLfloat depth_val = 0.75, stencil_val = 2.0;
GLfloat green[4] = {0.0, 1.0, 0.0, 0.0};
bool pass = true;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor4fv(green);
piglit_draw_rect(0, 0, width, height);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_COLOR);
pass = pass && piglit_probe_rect_rgba(x, y, width, height, green);
/* Initialize depth data */
for (i = 0; i < IMAGE_HEIGHT; i++) {
for(j = 0; j < IMAGE_WIDTH; j++)
buf[i][j] = depth_val;
}
glClearDepth(0.0);
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_ALWAYS);
glRasterPos2i(0, 0);
glDrawPixels(width, height,
GL_DEPTH_COMPONENT, GL_FLOAT, buf);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_DEPTH);
pass = piglit_probe_rect_depth(x, y, width, height, depth_val)
&& pass;
/* Initialize stencil data */
for (i = 0; i < IMAGE_HEIGHT; i++) {
for(j = 0; j < IMAGE_WIDTH; j++)
buf[i][j] = stencil_val;
}
glClearStencil(0.0);
glClear(GL_STENCIL_BUFFER_BIT);
glRasterPos2i(0, 0);
glDrawPixels(width, height,
GL_STENCIL_INDEX, GL_FLOAT, buf);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_STENCIL);
pass = piglit_probe_rect_stencil(x, y, width, height, stencil_val)
&& pass;
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
if ((piglit_get_gl_version() < 14) &&
!piglit_is_extension_supported("GL_ARB_window_pos")) {
printf("Requires GL 1.4 or GL_ARB_window_pos");
piglit_report_result(PIGLIT_SKIP);
}
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
}
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