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/*
* Copyright © 2014 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 respecify-buffer.c
*
* Tests that the required state is reemitted when the buffer backing
* an atomic counter is respecified; taking care not to dirty too much
* other state which would mask flagging problems.
*
* This demonstrates a mesa bug.
*/
#include "common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
int data[] = { 0, 1, 2, 3 };
float red[] = { 1, 0, 0 };
float green[] = { 0, 1, 0 };
float blue[] = { 0, 0, 1 };
float white[] = { 1, 1, 1 };
enum piglit_result
piglit_display(void)
{
bool pass;
int i;
glViewport(0, 0, piglit_width, piglit_height);
glClearColor(0.2, 0.2, 0.2, 0.2);
glClear(GL_COLOR_BUFFER_BIT);
for (i = 0; i < 4; i++) {
/* respecify the buffer */
glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(*data),
&data[i], GL_STATIC_DRAW);
piglit_draw_rect(i % 2 - 1, i / 2 - 1, 1, 1);
}
pass = piglit_probe_pixel_rgb(piglit_width / 4,
piglit_height / 4, red);
pass = piglit_probe_pixel_rgb(3 * piglit_width / 4,
piglit_height / 4, green) && pass;
pass = piglit_probe_pixel_rgb(piglit_width / 4,
3 * piglit_height / 4, blue) && pass;
pass = piglit_probe_pixel_rgb(3 * piglit_width / 4,
3 * piglit_height / 4, white) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLuint prog;
GLuint abo;
piglit_require_extension("GL_ARB_shader_atomic_counters");
prog = piglit_build_simple_program(
"#version 140\n"
"in vec4 piglit_vertex;\n"
"void main() {\n"
" gl_Position = piglit_vertex;\n"
"}\n",
"#version 140\n"
"#extension GL_ARB_shader_atomic_counters: require\n"
"layout(binding=0) uniform atomic_uint x;\n"
"void main() {\n"
" uint n = atomicCounter(x);\n"
" if (n == 0u) gl_FragColor = vec4(1,0,0,0);\n"
" else if (n == 1u) gl_FragColor = vec4(0,1,0,0);\n"
" else if (n == 2u) gl_FragColor = vec4(0,0,1,0);\n"
" else gl_FragColor = vec4(1,1,1,0);\n"
"}\n");
glUseProgram(prog);
glGenBuffers(1, &abo);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, abo);
glBufferData(GL_ATOMIC_COUNTER_BUFFER, 4, NULL, GL_STATIC_DRAW);
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, abo);
}
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