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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 elements-negative-offset.c
*
* Tests for a bug in the i965 driver. When moving all VBO pointers
* down by the same offset in the same batchbuffer, it would be unable
* to access the new vertex data.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
64 /*window_width*/,
64 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_ALPHA)
static GLuint vbo;
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_ARB_vertex_buffer_object");
}
enum piglit_result
piglit_display(void)
{
bool pass = true;
float green[] = {0.0, 1.0, 0.0, 0.0};
float blue[] = {0.0, 0.0, 1.0, 0.0};
float vertex_data[] = {
/* quad 1 position */
-1.0, -1.0, 0.0, 1.0,
0.0, -1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0,
-1.0, 1.0, 0.0, 1.0,
/* quad 1 color */
0.0, 1.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
/* quad 0 position */
0.0, -1.0, 0.0, 1.0,
1.0, -1.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0,
/* quad 0 color */
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 1.0, 0.0,
};
intptr_t quad0_pos_offset = 8 * 4 * sizeof(float);
intptr_t quad0_color_offset = 12 * 4 * sizeof(float);
intptr_t quad1_pos_offset = 0;
intptr_t quad1_color_offset = 4 * 4 * sizeof(float);
glClearColor(1.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glGenBuffersARB(1, &vbo);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vertex_data),
vertex_data, GL_DYNAMIC_DRAW);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(4, GL_FLOAT, 0, (void *)quad0_pos_offset);
glColorPointer(4, GL_FLOAT, 0, (void *)quad0_color_offset);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glVertexPointer(4, GL_FLOAT, 0, (void *)quad1_pos_offset);
glColorPointer(4, GL_FLOAT, 0, (void *)quad1_color_offset);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
pass = piglit_probe_rect_rgba(0, 0,
piglit_width / 2, piglit_height / 2,
green) && pass;
pass = piglit_probe_rect_rgba(piglit_width / 2, 0,
piglit_width / 2, piglit_height / 2,
blue) && pass;
piglit_present_results();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDeleteBuffersARB(1, &vbo);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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