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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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file fbo-drawbuffers2-colormask.c
*
* Tests that individual color masks per render target with
* EXT_draw_buffers2 works.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
128 /*window_width*/,
128 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
static GLuint
attach_texture(int i)
{
GLuint tex;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
piglit_width, piglit_height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT + i,
GL_TEXTURE_2D,
tex,
0);
assert(glGetError() == 0);
return tex;
}
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
GLuint tex0, tex1, fb;
GLenum status;
float green[] = {0, 1, 0, 0};
float blue[] = {0, 0, 1, 0};
const GLenum attachments[] = {
GL_COLOR_ATTACHMENT0_EXT,
GL_COLOR_ATTACHMENT1_EXT,
};
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
tex0 = attach_texture(0);
tex1 = attach_texture(1);
glDrawBuffersARB(2, attachments);
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fprintf(stderr, "fbo incomplete (status = 0x%04x)\n", status);
piglit_report_result(PIGLIT_SKIP);
}
/* Clear to blue. The first buffer will have no blending and
* get overwritten green, and the second will be blended ZERO,
* ONE leaving the blue in place.
*/
glClearColor(0.0, 0.0, 1.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glBlendFunc(GL_ZERO, GL_ONE);
glDisableIndexedEXT(GL_BLEND, 0);
glEnableIndexedEXT(GL_BLEND, 1);
glColor4fv(green);
piglit_draw_rect(0, 0, piglit_width, piglit_height);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glDisable(GL_BLEND);
/* Draw the two textures to halves of the window. */
glEnable(GL_TEXTURE_2D);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBindTexture(GL_TEXTURE_2D, tex0);
piglit_draw_rect_tex(0, 0,
piglit_width / 2, piglit_height,
0, 0, 1, 1);
glBindTexture(GL_TEXTURE_2D, tex1);
piglit_draw_rect_tex(piglit_width / 2, 0,
piglit_width, piglit_height,
0, 0, 1, 1);
glDisable(GL_TEXTURE_2D);
glDeleteTextures(1, &tex0);
glDeleteTextures(1, &tex1);
glDeleteFramebuffersEXT(1, &fb);
pass = pass && piglit_probe_rect_rgb(0, 0, piglit_width/2,
piglit_height, green);
pass = pass && piglit_probe_rect_rgb(piglit_width/2, 0, piglit_width/2,
piglit_height, blue);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint num;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
piglit_require_extension("GL_EXT_framebuffer_object");
piglit_require_extension("GL_ARB_draw_buffers");
piglit_require_extension("GL_EXT_draw_buffers2");
glGetIntegerv(GL_MAX_DRAW_BUFFERS_ARB, &num);
if (num < 2)
piglit_report_result(PIGLIT_SKIP);
}
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