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/*
* Copyright © 2011 Red Hat
*
* 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 error-at-begin.c
*
* \author Dave Airlie
* ARB_blend_func_extended states in ERRORS section
* "The error INVALID_OPERATION is generated by Begin or any procedure that
* implicitly calls Begin if any draw buffer has a blend function requiring the
* second color input (SRC1_COLOR, ONE_MINUS_SRC1_COLOR, SRC1_ALPHA or
* ONE_MINUS_SRC1_ALPHA), and a framebuffer is bound that has more than
* the value of MAX_DUAL_SOURCE_DRAW_BUFFERS-1 active color attachements."
*/
#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)
{
return PIGLIT_FAIL;
}
static GLuint fbo;
static GLuint max_buffers;
static void
create_fbo(void)
{
GLuint rb[32];
int i;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo);
glGenRenderbuffers(max_buffers, rb);
for (i = 0; i < max_buffers; i++) {
glBindRenderbuffer(GL_RENDERBUFFER_EXT, rb[i]);
glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0 + i,
GL_RENDERBUFFER_EXT,
rb[i]);
glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_RGBA,
piglit_width, piglit_height);
}
}
void piglit_init(int argc, char **argv)
{
GLint max_dual_source;
GLenum buffers[32];
int i;
piglit_require_gl_version(30);
piglit_require_extension("GL_ARB_blend_func_extended");
piglit_require_extension("GL_ARB_draw_buffers_blend");
/* This test needs some number of draw buffers, so make sure the
* implementation isn't broken. This enables the test to generate a
* useful failure message.
*/
glGetIntegerv(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, &max_dual_source);
if (max_dual_source < 1) {
fprintf(stderr,
"ARB_blend_func_extended requires GL_MAX_DUAL_SOURCE_DRAW_BUFFERS >= 1. "
"Only got %d!\n",
max_dual_source);
piglit_report_result(PIGLIT_FAIL);
}
max_buffers = max_dual_source + 1;
create_fbo();
for (i = 0; i < max_buffers; i++)
buffers[i] = GL_COLOR_ATTACHMENT0_EXT + i;
glDrawBuffersARB(max_buffers, buffers);
for (i = 0; i < max_buffers; i++) {
if (i >= max_dual_source)
glBlendFunciARB(i, GL_SRC1_ALPHA, GL_ONE_MINUS_SRC1_ALPHA);
else
glBlendFunciARB(i, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnableIndexedEXT(GL_BLEND, i);
}
glBegin(GL_QUADS);
if (!piglit_check_gl_error(GL_INVALID_OPERATION))
piglit_report_result(PIGLIT_FAIL);
else
piglit_report_result(PIGLIT_PASS);
}
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