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/* Copyright © 2011 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 drawbuffer-modes.c
* Verify the functionality of glDrawBuffer() function with different color
* buffer modes in default framebuffer
*
* This test works by calling glDrawBuffer function for each color buffer mode
* and testing the buffer's color value against expected value. All the calls
* should ensure no error.
*
* This test case also verifies the fix for Bug 44153:
* https://bugs.freedesktop.org/show_bug.cgi?id=44153
*
* \Author Yi Sun <yi.sun@intel.com>, Anuj Phogat <anuj.phogat@gmail.com>
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
config.requires_displayed_window = true;
PIGLIT_GL_TEST_CONFIG_END
float color[7][4] = {
{ 0.1, 0.2, 0.3, 1.0 },
{ 0.2, 0.3, 0.4, 1.0 },
{ 0.3, 0.4, 0.5, 1.0 },
{ 0.4, 0.5, 0.6, 1.0 },
{ 0.5, 0.6, 0.7, 1.0 },
{ 0.6, 0.7, 0.8, 1.0 },
{ 1.0, 1.0, 1.0, 1.0 } };
int bufferlist[] = {
GL_FRONT_AND_BACK,
GL_BACK, GL_FRONT,
GL_LEFT,
GL_BACK_LEFT,
GL_FRONT_LEFT,
GL_NONE };
enum piglit_result
piglit_display(void)
{
bool pass = true;
bool pixel_probe = true;
int i;
GLfloat probe[4];
for ( i = 0; i < ARRAY_SIZE(bufferlist); i++) {
glDrawBuffer(bufferlist[i]);
glClear(GL_COLOR_BUFFER_BIT);
glColor4fv(color[i]);
piglit_draw_rect(20, 20, 50, 50);
pass = piglit_check_gl_error(GL_NO_ERROR)
&& pass;
switch (bufferlist[i]) {
case GL_FRONT_AND_BACK:
glReadBuffer(GL_BACK_LEFT);
pass = piglit_probe_rect_rgba(20, 20, 50, 50,
color[i])
&& pass;
glReadBuffer(GL_FRONT_LEFT);
pass = pass &&
piglit_probe_rect_rgba(20, 20, 50, 50,
color[i]);
break;
case GL_LEFT:
glReadBuffer(GL_BACK_LEFT);
pass = piglit_probe_rect_rgba(20, 20, 50, 50,
color[i])
&& pass;
glReadBuffer(GL_FRONT_LEFT);
pass = piglit_probe_rect_rgba(20, 20, 50, 50,
color[i])
&& pass;
break;
case GL_BACK:
case GL_BACK_LEFT:
glReadBuffer(bufferlist[i]);
pass = piglit_probe_rect_rgba(20, 20, 50, 50,
color[i])
&& pass;
/* This should not modify GL_FRONT_LEFT buffer */
glReadBuffer(GL_FRONT_LEFT);
pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
color[i],
probe);
pass = !pixel_probe && pass;
if(pixel_probe)
printf("glDrawBuffer(GL_BACK) modifies"
" GL_FRONT_LEFT buffer\n");
break;
case GL_FRONT:
case GL_FRONT_LEFT:
glReadBuffer(bufferlist[i]);
pass = piglit_probe_rect_rgba(20, 20, 50, 50,
color[i])
&& pass;
/* This should not modify GL_BACK_LEFT buffer */
glReadBuffer(GL_BACK_LEFT);
pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
color[i],
probe);
pass = !pixel_probe && pass;
if(pixel_probe)
printf("glDrawBuffer(GL_FRONT) modifies"
" GL_BACK_LEFT buffer\n");
break;
case GL_NONE:
/* Drawing to a buffer GL_NONE should not
* modify any existing buffers
*/
glReadBuffer(GL_BACK_LEFT);
pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
color[i],
probe);
pass = !pixel_probe && pass;
if(pixel_probe)
printf("glDrawBuffer(GL_NONE) modifies"
" GL_BACK_LEFT buffer\n");
glReadBuffer(GL_FRONT_LEFT);
pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
color[i],
probe);
pass = !pixel_probe && pass;
if (pixel_probe)
printf("glDrawBuffer(GL_NONE) modifies"
" GL_FRONT_LEFT buffer\n");
break;
}
pass = piglit_check_gl_error(GL_NO_ERROR)
&& pass;
}
return (pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
void piglit_init(int argc, char **argv)
{
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0, piglit_width, 0, piglit_height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glClearColor(0.2, 0.2, 0.2, 1.0);
}
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