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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.
*/
#include "piglit-util-gl-common.h"
#include "sized-internalformats.h"
/**
* @file required-sized-formats.c
*
* Tests that the required sized internal formats for GL 3.0 are
* exposed. See page 180 of the GL 3.0 pdf (20080923), "Required
* Texture Formats". Notably:
*
* "In addition, implementations are required to support the
* following sized internal formats. Requesting one of these
* internal formats for any texture type will allocate exactly
* the internal component sizes and types shown for that format
* in tables 3.16- 3.17:"
*/
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;
piglit_require_gl_version(30);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
for (i = 0; required_formats[i].token != GL_NONE; i++) {
GLint sizes[CHANNELS];
GLint types[CHANNELS];
bool format_pass = true;
GLenum format, type;
const struct sized_internalformat *f;
/* FINISHME: Add support for future GL versions. */
if (required_formats[i].version != 30)
continue;
f = get_sized_internalformat(required_formats[i].token);
if (f->token == GL_DEPTH24_STENCIL8 ||
f->token == GL_DEPTH32F_STENCIL8) {
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) {
printf("Unexpected error creating %s texture\n",
f->name);
pass = false;
continue;
}
for (c = 0; c < CHANNELS; c++) {
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
size_queries[c], &sizes[c]);
if (c != S) {
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
type_queries[c],
&types[c]);
} else {
/* For stencil, there's no query for
* the type, so our table above
* records a type/size of unorm 8, and
* we'll just set the query result
* here to unorm so that we only look
* at the size.
*/
if (sizes[c] != 0)
types[c] = GL_UNSIGNED_NORMALIZED;
else
types[c] = GL_NONE;
}
/* We use ~0 as the signal for the compressed
* texture formats. While the colors being
* interpolated across the 4x4 blocks have 8
* bits in them, the spec suggests reporting
* some approximate value less than that.
* From page 319 of the GL 3.0 spec:
*
* "Queries of value of TEXTURE RED SIZE,
* TEXTURE GREEN SIZE, [...] return the
* actual resolutions of the stored image
* array components, not the resolutions
* specified when the image array was
* defined. For texture images with a
* compressed internal format, the
* resolutions returned specify the
* component resolution of an
* uncompressed internal format that
* produces an image of roughly the same
* quality as the compressed image in
* question. Since the quality of the
* implementation’s compression algorithm
* is likely data-dependent, the returned
* component sizes should be treated only
* as rough approximations.
*/
if (f->bits[c] == SCMP ||
f->bits[c] == UCMP) {
if (sizes[c] <= 0 || sizes[c] > 8)
format_pass = false;
} else {
if (sizes[c] != get_channel_size(f, c)) {
format_pass = false;
}
}
if (types[c] != get_channel_type(f, c))
format_pass = false;
}
if (!format_pass) {
printf("format %s:\n",
f->name);
printf(" expected: ");
for (c = 0; c < CHANNELS; c++) {
print_bits(get_channel_size(f, c),
get_channel_type(f, c));
printf(" ");
}
printf("\n");
printf(" observed: ");
for (c = 0; c < CHANNELS; c++) {
print_bits(sizes[c], types[c]);
printf(" ");
}
printf("\n");
pass = false;
}
}
glDeleteTextures(1, &tex);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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