void piglit_init(int argc, char **argv)
{
piglit_require_gl_version(20);
piglit_require_GLSL_version(120);
piglit_require_transform_feedback();
init_xfb_varying_array();
glGenBuffers(1, &xfb_buf);
printf("Vertical axis: Increasing numbers of varyings captured by "
"transform feedback.\n");
printf("Horizontal axis: Offset of first varying captured.\n");
}
void
piglit_init(int argc, char **argv)
{
GLuint vs;
int i;
/* Parse params. */
if (argc != 2)
print_usage_and_exit(argv[0]);
test_to_run = find_matching_test(argv[0], argv[1]);
/* Set up test */
piglit_require_GLSL_version(test_to_run->version);
piglit_require_transform_feedback();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, test_to_run->vs);
prog = glCreateProgram();
glAttachShader(prog, vs);
glBindAttribLocation(prog, 0, "vertex_pos");
glBindAttribLocation(prog, 1, "vertex_num");
glTransformFeedbackVaryings(prog, test_to_run->num_varyings,
(const char **) test_to_run->varyings,
GL_INTERLEAVED_ATTRIBS_EXT);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
/* Test that GetTransformFeedbackVarying reports the correct
* size and type for all of the varyings.
*/
for (i = 0; i < test_to_run->num_varyings; ++i) {
GLsizei size;
GLenum type;
glGetTransformFeedbackVarying(prog, i, 0, NULL, &size,
&type, NULL);
if (size != test_to_run->expected_size) {
printf("For varying %i, expected size %i, got %i\n",
i, test_to_run->expected_size, size);
size_and_type_ok = GL_FALSE;
}
if (type != test_to_run->expected_type) {
printf("For varying %i, expected type %i, got %i\n",
i, test_to_run->expected_type, type);
size_and_type_ok = GL_FALSE;
}
}
glGenBuffers(1, &xfb_buf);
glGenQueries(1, &query);
glEnable(GL_VERTEX_PROGRAM_TWO_SIDE);
}
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);
}
void
piglit_init(int argc, char **argv)
{
int i;
/* Set up test */
piglit_require_GLSL_version(150);
piglit_require_transform_feedback();
piglit_require_extension("GL_ARB_gpu_shader_fp64");
for (i = 0; i < ARRAY_SIZE(tests); i++)
run_test(&tests[i]);
if (size_and_type_ok == false)
piglit_report_result(PIGLIT_FAIL);
piglit_report_result(PIGLIT_PASS);
}
void piglit_init(int argc, char **argv)
{
GLuint vs, i;
GLint maxcomps;
float *ptr;
/* Check the driver. */
piglit_require_transform_feedback();
piglit_require_extension("GL_ARB_gpu_shader_fp64");
piglit_require_extension("GL_ARB_transform_feedback3");
glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT, &maxcomps);
if (maxcomps < 18) {
fprintf(stderr, "Not enough interleaved components supported by transform feedback.\n");
piglit_report_result(PIGLIT_SKIP);
}
/* Create shaders. */
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
prog = glCreateProgram();
glAttachShader(prog, vs);
glTransformFeedbackVaryings(prog, sizeof(varyings)/sizeof(varyings[0]),
varyings, GL_INTERLEAVED_ATTRIBS_EXT);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
/* Set up the transform feedback buffer. */
glGenBuffers(1, &buf);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, buf);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
TOTAL_BUF_COMPONENTS*sizeof(float), NULL, GL_STREAM_READ);
ptr = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, GL_WRITE_ONLY);
for (i = 0; i < TOTAL_BUF_COMPONENTS; i++) {
ptr[i] = 0.123456;
}
glUnmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT);
glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, 0, buf);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
glClearColor(0.2, 0.2, 0.2, 1.0);
}
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();
if (test->bind_mode == OFFSET) {
/* BindBufferOffset only exists in the EXT specification */
piglit_require_extension("GL_EXT_transform_feedback");
}
piglit_report_result(do_test(test) ? PIGLIT_PASS : PIGLIT_FAIL);
}
void
piglit_init(int argc, char **argv)
{
float verts[] = {
-1, -1,
1, -1,
1, 1,
-1, 1
};
GLuint vbo, xfb, vs, fs, prog;
const char *varying = "gl_Position";
piglit_require_extension("GL_EXT_transform_feedback");
piglit_require_gl_version(30);
piglit_require_transform_feedback();
glGenBuffersARB(1, &vbo);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, 8 * sizeof(float),
verts, GL_DYNAMIC_DRAW);
glGenBuffersARB(1, &xfb);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb);
glBufferDataARB(GL_TRANSFORM_FEEDBACK_BUFFER, 4096, NULL,
GL_DYNAMIC_DRAW);
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glTransformFeedbackVaryings(prog, 1, &varying, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!fs || !vs || !prog)
piglit_report_result(PIGLIT_FAIL);
if (!piglit_link_check_status(prog))
piglit_report_result(PIGLIT_FAIL);
glUseProgram(prog);
glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, 0, xfb, 0, 4096);
}
static void
initialize_shader_and_xfb()
{
GLuint prog, vs;
const char *varying = "tf";
piglit_require_gl_version(30);
piglit_require_GLSL_version(130);
piglit_require_transform_feedback();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
prog = piglit_CreateProgram();
piglit_AttachShader(prog, vs);
piglit_TransformFeedbackVaryings(prog, 1, &varying,
GL_INTERLEAVED_ATTRIBS);
piglit_LinkProgram(prog);
if (!piglit_link_check_status(prog)) {
piglit_DeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
piglit_UseProgram(prog);
}
void
piglit_init(int argc, char **argv)
{
GLuint vs;
const char *varying_name = "output_value";
/* Parse args */
if (argc != 2)
print_usage_and_exit(argv[0]);
selected_test = interpret_test_case_arg(argv[1]);
if (selected_test == NULL)
print_usage_and_exit(argv[0]);
/* Make sure required GL features are present */
piglit_require_GLSL_version(120);
piglit_require_transform_feedback();
if (selected_test->bind_offset != 0 && selected_test->bind_size == 0) {
/* Test requires glBindBufferOffsetEXT, which is in
* EXT_transform_feedback, but was never adopted into
* OpenGL.
*/
piglit_require_extension("GL_EXT_transform_feedback");
}
/* Create program and buffer */
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
prog = glCreateProgram();
glAttachShader(prog, vs);
glTransformFeedbackVaryings(prog, 1, &varying_name,
GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!piglit_link_check_status(prog))
piglit_report_result(PIGLIT_FAIL);
glGenBuffers(1, &xfb_buf);
glGenQueries(1, &query);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
}
void piglit_init(int argc, char **argv)
{
if (argc != 2)
print_usage_and_exit(argv[0]);
if (strcmp(argv[1], "discard") == 0)
discard = GL_TRUE;
else if (strcmp(argv[1], "buffer") == 0)
buffer = GL_TRUE;
else if (strcmp(argv[1], "prims_written") == 0)
prims_written = GL_TRUE;
else if (strcmp(argv[1], "prims_generated") == 0)
prims_generated = GL_TRUE;
else
print_usage_and_exit(argv[0]);
piglit_require_transform_feedback();
if (buffer || prims_written) {
GLuint vs;
piglit_require_GLSL();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
xfb_prog = glCreateProgram();
glAttachShader(xfb_prog, vs);
glTransformFeedbackVaryings(xfb_prog, 1, xfb_varyings,
GL_INTERLEAVED_ATTRIBS);
glLinkProgram(xfb_prog);
if (!piglit_link_check_status(xfb_prog)) {
piglit_report_result(PIGLIT_FAIL);
}
glGenBuffers(1, &xfb_buf);
}
if (prims_written) {
glGenQueries(1, &prims_written_query);
}
if (prims_generated) {
glGenQueries(1, &prims_generated_query);
}
}
void
piglit_init(int argc, char **argv)
{
GLuint vs, fs;
/* Interpret command line args */
if (argc != 2)
print_usage_and_exit(argv[0]);
if (strcmp(argv[1], "output") == 0)
test_mode = TEST_MODE_OUTPUT;
else if (strcmp(argv[1], "prims_generated") == 0)
test_mode = TEST_MODE_PRIMS_GENERATED;
else if (strcmp(argv[1], "prims_written") == 0)
test_mode = TEST_MODE_PRIMS_WRITTEN;
else
print_usage_and_exit(argv[0]);
piglit_require_GLSL();
piglit_require_transform_feedback();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fstext);
prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glBindAttribLocation(prog, 0, "in_position");
glBindAttribLocation(prog, 1, "in_color");
glTransformFeedbackVaryings(prog, 2, varyings, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
glGenBuffers(1, &xfb_buf);
glGenQueries(1, &query);
}
void
piglit_init(int argc, char **argv)
{
GLuint vs, fs;
piglit_require_GLSL();
piglit_require_transform_feedback();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fstext);
prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glBindAttribLocation(prog, 0, "in_position");
glBindAttribLocation(prog, 1, "in_color");
glTransformFeedbackVaryings(prog, 2, varyings, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
glGenBuffers(2, bufs);
}
void
piglit_init(int argc, char **argv)
{
piglit_require_transform_feedback();
}
void piglit_init(int argc, char **argv)
{
GLuint vs;
GLuint *readback;
GLuint buffer[BUFFER_SIZE];
GLuint expected[BUFFER_SIZE];
int i;
bool pass = true;
GLint input_index;
GLuint prog;
GLuint xfb_buf, vbo;
GLuint verts[4] = { 0, 1, 2, 3 };
const char *varying = "o";
piglit_require_GLSL_version(140);
piglit_require_gl_version(30);
piglit_require_transform_feedback();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
prog = glCreateProgram();
glAttachShader(prog, vs);
glTransformFeedbackVaryings(prog, 1, &varying, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!piglit_link_check_status(prog))
piglit_report_result(PIGLIT_FAIL);
glGenBuffers(1, &xfb_buf);
if (!piglit_check_gl_error(0))
piglit_report_result(PIGLIT_FAIL);
input_index = glGetAttribLocation(prog, "i");
glUseProgram(prog);
if (piglit_get_gl_version() >= 31) {
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
}
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER,
4 * sizeof(GLuint), verts, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexAttribIPointer(input_index, 1, GL_UNSIGNED_INT,
sizeof(GLuint), 0);
glEnableVertexAttribArray(input_index);
pass = piglit_check_gl_error(0) && pass;
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, xfb_buf);
memset(buffer, 0xd0, sizeof(buffer));
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, sizeof(buffer), buffer,
GL_STREAM_READ);
glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, 0, xfb_buf,
0,
sizeof(buffer));
glBeginTransformFeedback(GL_POINTS);
glDrawArrays(GL_POINTS, 0, ARRAY_SIZE(verts));
glEndTransformFeedback();
readback = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, GL_READ_ONLY);
/* Check output */
for (i = 0; i < BUFFER_SIZE; ++i) {
if (verts[i] != readback[i]) {
printf("readback[%u]: %u, expected: %u\n", i,
readback[i], expected[i]);
pass = false;
}
}
/* Note that rasterization occurred, but the results were
* undefined due to gl_Position not being written. We do want
* to have rasterization occur (as opposed to just transform
* feedback) just to make sure the GPU didn't wedge or
* anything.
*/
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
void piglit_init(int argc, char **argv)
{
GLuint vs;
unsigned i,j;
int maxcomps;
float *data;
/* Parse params. */
for (i = 1; i < argc; i++) {
struct test_desc *t;
for (t = tests; t->name; t++) {
if (!strcmp(argv[i], t->name)) {
test = t;
goto test_ready;
}
}
fprintf(stderr, "Unknown test name.\n");
exit(1);
}
test = &tests[0];
test_ready:
printf("Testing type: %s\n", test->name);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
/* Check the driver. */
piglit_require_gl_version(15);
piglit_require_GLSL();
piglit_require_transform_feedback();
if (!test->is_floating_point)
piglit_require_GLSL_version(130);
if (test->is_transform_feedback3)
piglit_require_extension("GL_ARB_transform_feedback3");
glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS, &maxcomps);
for (i = 0; i < MAX_BUFFERS; i++) {
if (maxcomps < test->num_elements[i]) {
piglit_report_result(PIGLIT_SKIP);
}
}
/* Create shaders. */
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, test->vs);
prog = glCreateProgram();
glAttachShader(prog, vs);
glTransformFeedbackVaryings(prog, test->num_varyings,
test->varyings,
GL_INTERLEAVED_ATTRIBS_EXT);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
glGenBuffers(MAX_BUFFERS, buf);
for (j = 0; j < MAX_BUFFERS; j++) {
if (!test->num_elements[j]) {
continue;
}
if (test->is_transform_feedback3) {
GLint maxbufs;
glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_BUFFERS, &maxbufs);
if (j >= maxbufs) {
piglit_report_result(PIGLIT_SKIP);
}
}
/* Set up the transform feedback buffer. */
data = malloc(test->num_elements[j]*NUM_VERTICES*sizeof(float));
for (i = 0; i < test->num_elements[j]*NUM_VERTICES; i++) {
data[i] = DEFAULT_VALUE;
}
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, buf[j]);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
test->num_elements[j]*NUM_VERTICES*sizeof(float),
data, GL_STREAM_READ);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, j, buf[j]);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
free(data);
}
glClearColor(0.2, 0.2, 0.2, 1.0);
glEnableClientState(GL_VERTEX_ARRAY);
}
void piglit_init(int argc, char **argv)
{
static const char *varyings[] = {"x"};
GLuint buffers[3];
GLuint vao;
GLuint prog;
GLuint queries[4];
GLuint xfb[2];
bool pass = true;
#ifdef PIGLIT_USE_OPENGL
piglit_require_transform_feedback();
piglit_require_GLSL_version(130);
piglit_require_extension("GL_ARB_vertex_array_object");
piglit_require_extension("GL_ARB_transform_feedback2");
#endif
/* This is all just the boot-strap work for the test.
*/
glGenTransformFeedbacks(ARRAY_SIZE(xfb), xfb);
glGenBuffers(ARRAY_SIZE(buffers), buffers);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, buffers[0]);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, 1024, NULL, GL_STREAM_READ);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, buffers[1]);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, 1024, NULL, GL_STREAM_READ);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, 0);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, buffers[2]);
glBufferData(GL_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
glVertexAttribPointer(0, 1, GL_FLOAT, GL_FALSE, 1 * sizeof(GLfloat), 0);
glEnableVertexAttribArray(0);
glGenQueries(ARRAY_SIZE(queries), queries);
prog = piglit_build_simple_program_unlinked(vstext, fstext);
glTransformFeedbackVaryings(prog, 1, varyings, GL_INTERLEAVED_ATTRIBS);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
pass = false;
goto done;
}
glUseProgram(prog);
glEnable(GL_RASTERIZER_DISCARD);
/* Here's the actual test.
*/
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, xfb[0]);
glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buffers[0]);
glBeginTransformFeedback(GL_POINTS);
glBeginQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, queries[0]);
glDrawArrays(GL_POINTS, 0, 4);
glEndQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
glPauseTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, xfb[1]);
glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buffers[1]);
glBeginTransformFeedback(GL_POINTS);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBeginQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, queries[1]);
glDrawArrays(GL_POINTS, 4, 2);
glEndQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
glPauseTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, xfb[0]);
glResumeTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBeginQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, queries[2]);
glDrawArrays(GL_POINTS, 6, 4);
glEndQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
glEndTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, xfb[1]);
glResumeTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBeginQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, queries[3]);
glDrawArrays(GL_POINTS, 10, 2);
glEndQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
glEndTransformFeedback();
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, 0);
glBindVertexArray(0);
/* The first XFB should have 8 primitives generated, and the buffer
* object should contain the values {1.0, 2.0, 3.0, 4.0, 7.0, 8.0,
* 9.0, 10.0}.
*/
{
static const float expected_xfb_data[] = {
1.0, 2.0, 3.0, 4.0, 7.0, 8.0, 9.0, 10.0
};
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
pass = check_results(1, ARRAY_SIZE(expected_xfb_data),
expected_xfb_data,
queries[0], queries[2])
&& pass;
}
/* The second XFB should have 4 primitives generated, and the buffer
* object should contain the values {5.0, 6.0, 11.0, 12.0}.
*/
{
static const float expected_xfb_data[] = {
5.0, 6.0, 11.0, 12.0
};
glBindBuffer(GL_ARRAY_BUFFER, buffers[1]);
pass = check_results(2, ARRAY_SIZE(expected_xfb_data),
expected_xfb_data,
queries[1], queries[3])
&& pass;
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
done:
glBindVertexArray(0);
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(ARRAY_SIZE(buffers), buffers);
glDeleteQueries(ARRAY_SIZE(queries), queries);
glDeleteTransformFeedbacks(ARRAY_SIZE(xfb), xfb);
glUseProgram(0);
glDeleteProgram(prog);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
void piglit_init(int argc, char **argv)
{
GLuint vs;
unsigned i;
float data[BUF_FLOATS];
for (i = 0; i < BUF_FLOATS; i++) {
data[i] = DEFAULT_VALUE;
}
/* Parse params. */
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "discard")) {
discard = GL_TRUE;
} else if (!strcmp(argv[i], "offset")) {
/* BindBufferOffset only exists in the EXT specification */
piglit_require_extension("GL_EXT_transform_feedback");
offset = OFFSET;
} else if (!strcmp(argv[i], "range")) {
offset = OFFSET;
range = MAX_RANGE-7;
} else if (!strcmp(argv[i], "render")) {
test = RENDER;
} else if (!strcmp(argv[i], "primgen")) {
test = PRIMGEN;
} else if (!strcmp(argv[i], "primwritten")) {
test = PRIMWRITTEN;
}
}
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
/* Check the driver. */
if (piglit_get_gl_version() < 15) {
fprintf(stderr, "OpenGL 1.5 required.\n");
piglit_report_result(PIGLIT_SKIP);
}
piglit_require_GLSL();
piglit_require_transform_feedback();
/* Create shaders. */
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
prog = piglit_CreateProgram();
piglit_AttachShader(prog, vs);
piglit_TransformFeedbackVaryings(prog, 1, varyings, GL_INTERLEAVED_ATTRIBS_EXT);
piglit_LinkProgram(prog);
if (!piglit_link_check_status(prog)) {
piglit_DeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vspassthrough);
prog_passthrough = piglit_CreateProgram();
piglit_AttachShader(prog_passthrough, vs);
piglit_TransformFeedbackVaryings(prog_passthrough, 1, varyings, GL_INTERLEAVED_ATTRIBS_EXT);
piglit_LinkProgram(prog_passthrough);
if (!piglit_link_check_status(prog_passthrough)) {
piglit_DeleteProgram(prog_passthrough);
piglit_report_result(PIGLIT_FAIL);
}
/* Set up the transform feedback buffer. */
glGenBuffers(1, &buf);
glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, buf);
glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
BUF_FLOATS*sizeof(float), data, GL_STREAM_READ);
assert(glGetError() == 0);
if (range) {
puts("Testing BindBufferRange.");
piglit_BindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
0, buf, offset*sizeof(float), range*sizeof(float));
} else if (offset) {
puts("Testing BindBufferOffset.");
glBindBufferOffsetEXT(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
0, buf, offset*sizeof(float));
} else {
puts("Testing BindBufferBase.");
piglit_BindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, 0, buf);
}
if (!range) {
range = MAX_RANGE;
} else {
range = MAX_RANGE/2; /* just one primitive is going to be written */
}
assert(glGetError() == 0);
glClearColor(0.2, 0.2, 0.2, 1.0);
glEnableClientState(GL_VERTEX_ARRAY);
}