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/*
* Copyright (c) The Piglit project 2008
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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
* Test whether 1D textures correctly ignore the T coordinate wrap mode.
*
* Since 1D textures are genuine one-dimensional objects, the T coordinate
* shouldn't affect them at all. However, R300 simulates them as flat
* 2D textures, which caused incorrect sampling of border colors.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
256 /*window_width*/,
128 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
static const GLfloat TextureColor[3] = { 1.0, 0.5, 0.0 };
static GLboolean test(GLenum wrapt, int cellx, int celly)
{
int sx, sy;
glPushMatrix();
glTranslatef(cellx*0.25, celly*0.5, 0.0);
glScalef(0.25, 0.5, 1.0);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, wrapt);
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex2f(0, 0);
glTexCoord2f(1, 0); glVertex2f(1, 0);
glTexCoord2f(1, 1); glVertex2f(1, 1);
glTexCoord2f(0, 1); glVertex2f(0, 1);
glEnd();
glPopMatrix();
glReadBuffer(GL_BACK);
/* Take more than one sample, just to be sure */
for(sy = 0; sy < 4; ++sy) {
for(sx = 0; sx < 4; ++sx) {
int x = (cellx*5 + sx + 1)*piglit_width/20;
int y = (celly*5 + sy + 1)*piglit_height/10;
if (!piglit_probe_pixel_rgb(x, y, TextureColor)) {
fprintf(stderr, "Fail in cell %i,%i (texwrap = 0x%x)\n", cellx, celly, wrapt);
return GL_FALSE;
}
}
}
return GL_TRUE;
}
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
glClearColor(0.5, 0.5, 0.5, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
/* Draw eight tiles, each with a different tex wrap mode.
* They should all look the same.
*/
pass &= test(GL_REPEAT, 0, 0);
pass &= test(GL_CLAMP, 1, 0);
pass &= test(GL_CLAMP_TO_EDGE, 2, 0);
pass &= test(GL_CLAMP_TO_BORDER, 3, 0);
pass &= test(GL_MIRRORED_REPEAT, 0, 1);
if (piglit_is_extension_supported("GL_EXT_texture_mirror_clamp")) {
pass &= test(GL_MIRROR_CLAMP_EXT, 1, 1);
pass &= test(GL_MIRROR_CLAMP_TO_EDGE_EXT, 2, 1);
pass &= test(GL_MIRROR_CLAMP_TO_BORDER_EXT, 3, 1);
}
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void piglit_init(int argc, char **argv)
{
(void) argc;
(void) argv;
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexImage1D(GL_TEXTURE_1D, 0, GL_RGB, 1, 0, GL_RGB, GL_FLOAT, TextureColor);
glEnable(GL_TEXTURE_1D);
piglit_ortho_projection(1.0, 1.0, GL_FALSE);
if (!piglit_automatic)
printf("You should see a flat orange color\n");
}
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