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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 INd 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.
*/
#include "piglit-util-gl-common.h"
#include "sized-internalformats.h"
/**
* @file sized-texture-format-channels.c
*
* Tests that sized internalformats of textures have the correct set
* of channels exposed.
*
* From the GL 2.1 specification page 153 (page 167 of the PDF):
*
* "If a sized internal format is specified, the mapping of the R,
* G, B, A, and depth values to texture components is equivalent
* to the mapping of the correspond- ing base internal format’s
* components, as specified in table 3.15, and the memory
* allocation per texture component is assigned by the GL to
* match the allocations listed in table 3.16 as closely as
* possible. (The definition of closely is left up to the
* implementation. However, a non-zero number of bits must be
* allocated for each component whose desired allocation in table
* 3.16 is non-zero, and zero bits must be allocated for all
* other components)."
*
* This test will fail if for the zero vs non-zero cases above, and
* will informationally print the channel sizes when they don't
* exactly match.
*/
PIGLIT_GL_TEST_MAIN(
32 /*window_width*/,
32 /*window_height*/,
PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA)
GLenum type_queries[CHANNELS] = {
GL_TEXTURE_RED_TYPE,
GL_TEXTURE_GREEN_TYPE,
GL_TEXTURE_BLUE_TYPE,
GL_TEXTURE_ALPHA_TYPE,
GL_TEXTURE_LUMINANCE_TYPE,
GL_TEXTURE_INTENSITY_TYPE,
GL_TEXTURE_DEPTH_TYPE,
GL_NONE,
};
GLenum size_queries[CHANNELS] = {
GL_TEXTURE_RED_SIZE,
GL_TEXTURE_GREEN_SIZE,
GL_TEXTURE_BLUE_SIZE,
GL_TEXTURE_ALPHA_SIZE,
GL_TEXTURE_LUMINANCE_SIZE,
GL_TEXTURE_INTENSITY_SIZE,
GL_TEXTURE_DEPTH_SIZE,
GL_TEXTURE_STENCIL_SIZE,
};
enum piglit_result
piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
bool pass = true;
GLuint tex;
int i, c;
const struct sized_internalformat *f;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
for (i = 0; sized_internalformats[i].token != GL_NONE; i++) {
GLint sizes[CHANNELS];
bool format_fail = false, format_print = false;
GLenum format, type;
f = &sized_internalformats[i];
if (get_channel_size(f, D) && get_channel_size(f, S)) {
format = GL_DEPTH_STENCIL;
type = GL_UNSIGNED_INT_24_8;
} else if (get_channel_size(f, D)) {
format = GL_DEPTH_COMPONENT;
type = GL_FLOAT;
} else {
format = GL_RGBA;
type = GL_FLOAT;
/* Have to specify integer data for integer textures. */
for (c = R; c <= I; c++) {
if (get_channel_type(f, c) == GL_UNSIGNED_INT ||
get_channel_type(f, c) == GL_INT) {
format = GL_RGBA_INTEGER;
type = GL_UNSIGNED_INT;
break;
}
}
}
glTexImage2D(GL_TEXTURE_2D, 0, f->token,
1, 1, 0,
format, type, NULL);
if (glGetError() != 0) {
/* We aren't checking for particular
* extensions before trying to create the
* texture, so don't complain about formats
* producing errors.
*/
continue;
}
for (c = 0; c < CHANNELS; c++) {
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
size_queries[c], &sizes[c]);
if ((f->bits[c] == NONE) != (sizes[c] == 0))
format_fail = true;
if (f->bits[c] != SCMP && f->bits[c] != UCMP) {
if (get_channel_size(f, c) != sizes[c])
format_print = true;
}
}
if (format_fail || format_print) {
printf("format %s%s:\n",
f->name, format_fail ? " failure" : "");
printf(" expected: ");
for (c = 0; c < CHANNELS; c++) {
if (sizes[c] == ~0)
printf("?? ");
else
printf("%2d ", get_channel_size(f, c));
}
printf("\n");
printf(" observed: ");
for (c = 0; c < CHANNELS; c++) {
printf("%2d ", sizes[c]);
}
printf("\n");
if (format_fail)
pass = false;
}
}
glDeleteTextures(1, &tex);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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