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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 glsl-fs-sampler-numbering.c
*
* Tests that drivers correctly use the sampler uniform's value to
* look up which gl texture unit is being used.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
static int sampler_location;
static GLint prog;
static const float white[4] = {1, 1, 1, 1};
static const float black[4] = {0, 0, 0, 0};
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
/* result = 2 ^ args1 + args2 */
int x1 = piglit_width / 4;
int x2 = piglit_width * 3 / 4;
int y1 = piglit_height / 4;
int y2 = piglit_height * 3 / 4;
piglit_draw_rect_tex(0, 0, piglit_width, piglit_height,
0, 0, 1, 1);
pass &= piglit_probe_pixel_rgb(x1, y1, black);
pass &= piglit_probe_pixel_rgb(x2, y1, white);
pass &= piglit_probe_pixel_rgb(x1, y2, white);
pass &= piglit_probe_pixel_rgb(x2, y2, black);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint vs, fs;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
piglit_require_gl_version(20);
vs = piglit_compile_shader(GL_VERTEX_SHADER,
"shaders/glsl-tex-mvp.vert");
fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
"shaders/glsl-tex.frag");
prog = piglit_link_simple_program(vs, fs);
glUseProgram(prog);
sampler_location = glGetUniformLocation(prog, "sampler");
glUniform1i(sampler_location, 1);
glActiveTexture(GL_TEXTURE1);
piglit_checkerboard_texture(0, 0, 2, 2, 1, 1, black, white);
glEnable(GL_TEXTURE_2D);
}
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