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/*
* Copyright © 2012 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 get-buffer-state.c
*
* Test that "Get" functions can be used to query the state of
* transform feedback buffers.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
16 /*window_width*/,
16 /*window_height*/,
PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB)
#define XFB_BUFFER_SIZE 12
enum test_mode {
MAIN,
INDEXED,
};
static struct test_desc
{
const char *name;
enum test_mode mode;
GLenum param;
} tests[] = {
/* name mode param */
{ "main_binding", MAIN, GL_TRANSFORM_FEEDBACK_BUFFER_BINDING },
{ "indexed_binding", INDEXED, GL_TRANSFORM_FEEDBACK_BUFFER_BINDING },
{ "buffer_start", INDEXED, GL_TRANSFORM_FEEDBACK_BUFFER_START },
{ "buffer_size", INDEXED, GL_TRANSFORM_FEEDBACK_BUFFER_SIZE },
};
static GLboolean
check_integer(const struct test_desc *test, GLenum param,
const char *param_string, GLint expected)
{
GLint get_result;
if (test->mode == MAIN && test->param == param) {
glGetIntegerv(param, &get_result);
if (get_result != expected) {
printf("%s == %i, expected %i\n", param_string,
get_result, expected);
return GL_FALSE;
}
}
return GL_TRUE;
}
#define CHECK_INTEGER(param, expected) \
pass = check_integer(test, param, #param, expected) && pass
static GLboolean
check_indexed(const struct test_desc *test, GLenum param,
const char *param_string, GLuint index, GLint expected)
{
GLint get_result;
if (test->mode == INDEXED && test->param == param) {
glGetIntegeri_v(param, index, &get_result);
if (get_result != expected) {
printf("%s[%u] == %i, expected %i\n", param_string,
index, get_result, expected);
return GL_FALSE;
}
}
return GL_TRUE;
}
#define CHECK_INDEXED(param, index, expected) \
pass = check_indexed(test, param, #param, index, expected) && pass
static GLboolean
do_test(const struct test_desc *test)
{
GLuint *bufs;
GLboolean pass = GL_TRUE;
GLint max_separate_attribs;
float initial_xfb_buffer_contents[XFB_BUFFER_SIZE];
int i;
glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
&max_separate_attribs);
printf("MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTIBS=%i\n",
max_separate_attribs);
bufs = malloc(max_separate_attribs * sizeof(GLuint));
glGenBuffers(max_separate_attribs, bufs);
memset(initial_xfb_buffer_contents, 0,
sizeof(initial_xfb_buffer_contents));
/* Main GL_TRANSFORM_FEEDBACK_BUFFER_BINDING should still be
* set to its default value.
*/
CHECK_INTEGER(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, 0);
/* Set up buffers. */
for (i = 0; i < max_separate_attribs; ++i) {
printf("BindBuffer(TRANSFORM_FEEDBACK_BUFFER, %u)\n", bufs[i]);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, bufs[i]);
CHECK_INTEGER(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, bufs[i]);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER,
sizeof(initial_xfb_buffer_contents),
initial_xfb_buffer_contents, GL_STREAM_READ);
}
/* Indexed bindings should still be set to their default values. */
for (i = 0; i < max_separate_attribs; ++i) {
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, i, 0);
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_START, i, 0);
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_SIZE, i, 0);
}
/* Bind buffers, setting various offsets and sizes. */
for (i = 0; i < max_separate_attribs; ++i) {
int offset = 4 * (i % 4);
int size = 4 * ((i % 3) + 1);
printf("BindBufferRange(TRANSFORM_FEEDBACK_BUFFER, %i, %u, %i, %i)\n",
i, bufs[i], offset, size);
glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, i,
bufs[i], offset, size);
CHECK_INTEGER(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, bufs[i]);
}
/* Check indexed bindings. */
for (i = 0; i < max_separate_attribs; ++i) {
int offset = 4 * (i % 4);
int size = 4 * ((i % 3) + 1);
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, i, bufs[i]);
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_START, i, offset);
CHECK_INDEXED(GL_TRANSFORM_FEEDBACK_BUFFER_SIZE, i, size);
}
return pass;
}
void
print_usage_and_exit(const char *prog_name)
{
int i;
printf("Usage: %s <test_name>\n"
" where <test_name> is one of:\n", prog_name);
for (i = 0; i < ARRAY_SIZE(tests); ++i)
printf(" %s\n", tests[i].name);
exit(0);
}
const struct test_desc *
find_matching_test(const char *prog_name, const char *test_name)
{
int i;
for (i = 0; i < ARRAY_SIZE(tests); ++i) {
if (strcmp(tests[i].name, test_name) == 0)
return &tests[i];
}
print_usage_and_exit(prog_name);
return NULL; /* won't actually be reached */
}
void
piglit_init(int argc, char **argv)
{
const struct test_desc *test;
/* Parse params. */
if (argc != 2)
print_usage_and_exit(argv[0]);
test = find_matching_test(argv[0], argv[1]);
piglit_require_GLSL();
piglit_require_transform_feedback();
piglit_report_result(do_test(test) ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* Should never be reached */
return PIGLIT_FAIL;
}
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