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/*
* Copyright 2015 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.
*/
/** @file getcompressedteximage.c
*
* Tests to make sure that glGetCompressedTexImage works correctly.
* The basic idea is to create some fake compressed data, upload it to the
* driver, download it, and compare.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 20;
config.window_visual = PIGLIT_GL_VISUAL_RGBA |
PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
/* Copied from Mesa src/mesa/main/formats.csv:
* MESA_FORMAT_RGBA_DXT5, s3tc, 4, 4, x128
*/
#define FORMAT GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
#define WIDTH 32
#define HEIGHT 32
#define WIDTH_IN_BLOCKS 8
#define HEIGHT_IN_BLOCKS 8
#define BLOCK_BYTES 16
#define IMAGE_SIZE (WIDTH_IN_BLOCKS * HEIGHT_IN_BLOCKS * BLOCK_BYTES)
#define CHAR_LIMIT 100
static GLubyte *expected;
static bool global_pass = true;
static void
subtest(bool local_result, const char *test_name)
{
global_pass = local_result && global_pass;
piglit_report_subtest_result(local_result ? PIGLIT_PASS : PIGLIT_FAIL,
test_name);
}
static void
init_random_data(void)
{
int i;
expected = malloc(18 * IMAGE_SIZE);
for (i = 0; i < 18 * IMAGE_SIZE; ++i) {
expected[i] = (GLubyte) rand();
}
}
void
piglit_init(int argc, char **argv)
{
if (piglit_is_extension_supported("GL_EXT_texture_compression_s3tc"))
piglit_require_extension("GL_EXT_texture_compression_s3tc");
else
piglit_require_extension("GL_ANGLE_texture_compression_dxt5");
srand(0);
init_random_data();
}
static bool
compare_to_expected(const GLubyte *data, int num_layers)
{
return memcmp(expected, data, num_layers * IMAGE_SIZE) == 0;
}
static void
traditional_download(GLenum target, int num_layers, GLubyte *data)
{
int i;
/* Download it using traditional path */
if (target == GL_TEXTURE_CUBE_MAP) {
for (i = 0; i < num_layers; ++i) {
glGetCompressedTexImage(
GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0,
data + i * IMAGE_SIZE);
}
}
else
glGetCompressedTexImage(target, 0, data);
}
static void
upload_subtest(GLenum target, bool use_pbo)
{
GLuint tex, pbo_pack, pbo_unpack;
int num_layers;
char test_name [CHAR_LIMIT];
int i;
GLubyte *data = expected;
bool pass = true;
/* Prepare to read data from expected */
if (use_pbo) {
glGenBuffers(1, &pbo_unpack);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo_unpack);
glBufferData(GL_PIXEL_UNPACK_BUFFER, 18 * IMAGE_SIZE,
expected, GL_STATIC_DRAW);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
data = NULL;
}
/* Upload it using traditional path */
glGenTextures(1, &tex);
glBindTexture(target, tex);
switch (target) {
case GL_TEXTURE_2D:
num_layers = 1;
glCompressedTexImage2D(target, 0, FORMAT, WIDTH, HEIGHT, 0,
num_layers * IMAGE_SIZE, data);
break;
case GL_TEXTURE_2D_ARRAY:
num_layers = 3;
glCompressedTexImage3D(target, 0, FORMAT, WIDTH, HEIGHT,
num_layers, 0,
num_layers * IMAGE_SIZE, data);
break;
case GL_TEXTURE_CUBE_MAP:
num_layers = 6;
for (i = 0; i < num_layers; ++i) {
glCompressedTexImage2D(
GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, FORMAT,
WIDTH, HEIGHT, 0, IMAGE_SIZE,
data + i * IMAGE_SIZE);
}
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
num_layers = 18;
glCompressedTexImage3D(target, 0, FORMAT, WIDTH, HEIGHT,
num_layers, 0,
num_layers * IMAGE_SIZE, data);
break;
default:
printf("Bad texture target.\n");
piglit_report_result(PIGLIT_FAIL);
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Download it */
if (use_pbo) {
/* Prepare PBO */
GLubyte *junk = malloc(18 * IMAGE_SIZE);
memset(junk, 123, 18 * IMAGE_SIZE);
glGenBuffers(1, &pbo_pack);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo_pack);
glBufferData(GL_PIXEL_PACK_BUFFER, 18 * IMAGE_SIZE,
junk, GL_STATIC_READ);
free(junk);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Do the transfer */
traditional_download(target, num_layers, (void *) 0);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Map the data */
data = glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
}
else {
data = malloc(18 * IMAGE_SIZE);
traditional_download(target, num_layers, data);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
}
/* Perform comparison and report the results. */
snprintf(test_name, CHAR_LIMIT, "upload %s%s",
piglit_get_gl_enum_name(target), use_pbo ? " PBO" : "");
pass = compare_to_expected(data, num_layers) && pass;
subtest(pass, test_name);
/* Clean up */
glDeleteTextures(1, &tex);
if (use_pbo) {
glDeleteBuffers(1, &pbo_unpack);
glDeleteBuffers(1, &pbo_pack);
}
else
free(data);
}
enum piglit_result
piglit_display(void)
{
/* Non-PBO tests */
upload_subtest(GL_TEXTURE_2D, false);
if (piglit_is_extension_supported("GL_EXT_texture_array"))
upload_subtest(GL_TEXTURE_2D_ARRAY, false);
upload_subtest(GL_TEXTURE_CUBE_MAP, false);
if (piglit_is_extension_supported("GL_ARB_texture_cube_map_array"))
upload_subtest(GL_TEXTURE_CUBE_MAP_ARRAY, false);
/* PBO tests */
upload_subtest(GL_TEXTURE_2D, true);
if (piglit_is_extension_supported("GL_EXT_texture_array"))
upload_subtest(GL_TEXTURE_2D_ARRAY, true);
upload_subtest(GL_TEXTURE_CUBE_MAP, true);
if (piglit_is_extension_supported("GL_ARB_texture_cube_map_array"))
upload_subtest(GL_TEXTURE_CUBE_MAP_ARRAY, true);
return global_pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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