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/*
* Copyright (c) 2016 VMware, Inc.
*
* 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 VMWARE 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.
*/
/**
* Tests glGetTexImage() with float format.
* This hits a rare pixel transfer patch in Mesa.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
/* should not called */
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLuint texture;
const unsigned w = 16, h = 8, d = 4;
unsigned i;
float *texData;
bool pass = true;
piglit_require_extension("GL_ARB_texture_float");
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_3D, texture);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
/* Define 3D texture with float values */
texData = malloc(4 * w * h * d * sizeof(float));
for (i = 0; i < w * h * d * 4; i++) {
texData[i] = (rand() & 0xff) / 255.0f;
}
glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA32F, w, h, d, 0,
GL_RGBA, GL_FLOAT, texData);
/* Get 3D texture as GLfloat (no transfer ops) */
{
GLfloat *getData = malloc(4 * w * h * d * sizeof(GLfloat));
glGetTexImage(GL_TEXTURE_3D, 0, GL_RGBA, GL_FLOAT, getData);
for (i = 0; i < w * h * d * 4; i++) {
GLfloat expected = texData[i];
if (getData[i] != expected) {
printf("Expected float value %f, found %f at %u\n",
expected, getData[i], i);
pass = false;
break;
}
}
free(getData);
}
/* Get 3D texture as GLubyte */
{
GLubyte *getData = malloc(4 * w * h * d * sizeof(GLubyte));
glGetTexImage(GL_TEXTURE_3D, 0, GL_RGBA, GL_UNSIGNED_BYTE, getData);
for (i = 0; i < w * h * d * 4; i++) {
GLubyte expected = (GLubyte) (texData[i] * 255);
if (getData[i] != expected) {
printf("Expected ubyte value %u, found %u at %u\n",
expected, getData[i], i);
pass = false;
break;
}
}
free(getData);
}
free(texData);
glDeleteTextures(1, &texture);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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