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/*
* Copyright 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
* 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.
*/
/**
* Test that glGenerateMipmap works properly (doesn't crash) when called a
* second time on a texture after we change the base image's size or format.
*
* The command line takes two parameters:
* size - test base level size change
* format - test base level format change
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
void
piglit_init(int argc, char **argv)
{
#define MAX_SIZE 8
GLubyte img[MAX_SIZE * MAX_SIZE * 4];
bool change_size = false, change_format = false;
int i;
GLuint tex;
GLsizei base_size, w0 = 0, h0 = 0;
bool pass = true;
/* We require GL 3.0 or GL_EXT_framebuffer_object */
if (piglit_get_gl_version() < 30 &&
!piglit_is_extension_supported("GL_EXT_framebuffer_object")) {
piglit_report_result(PIGLIT_SKIP);
}
/* parse args */
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "size") == 0) {
change_size = true;
} else if (strcmp(argv[i], "format") == 0) {
change_format = true;
}
}
if (!change_size && !change_format) {
printf("Missing required argument: 'size' or 'format'\n");
piglit_report_result(PIGLIT_SKIP);
}
/* init image data */
for (i = 0; i < sizeof(img); i++)
img[i] = 128;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
// Create initial texture mipmap (base_size x base_size)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
base_size = change_size ? MAX_SIZE / 2 : MAX_SIZE;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, base_size, base_size, 0,
GL_RGBA, GL_UNSIGNED_BYTE, img);
glGenerateMipmap(GL_TEXTURE_2D);
if (change_format) {
/* Change format of first level */
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, base_size, base_size,
0, GL_RGBA, GL_UNSIGNED_BYTE, img);
}
else if (change_size) {
/* Change base level to be larger */
assert(base_size * 2 == MAX_SIZE);
base_size = MAX_SIZE;
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, base_size, base_size,
0, GL_RGBA, GL_UNSIGNED_BYTE, img);
}
/* See if mipmap generation works (may crash/assert in Mesa) */
glGenerateMipmap(GL_TEXTURE_2D);
/* check level sizes */
for (i = 0; i < 3; i++) {
GLint w, h;
glGetTexLevelParameteriv(GL_TEXTURE_2D, i, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameteriv(GL_TEXTURE_2D, i, GL_TEXTURE_HEIGHT, &h);
if (i == 0) {
w0 = w;
h0 = h;
}
else {
if (w != w0 >> i || h != h0 >> i) {
printf("Incorrect mipmap level size: level %d", i);
printf(" Found %d x %d, expected %d x %d\n", w, h,
w0 >> i , h0 >> i);
pass = false;
}
}
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
// no-op
return PIGLIT_PASS;
}
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