enum piglit_result
piglit_display()
{
bool pass = true;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
/* Draw test pattern in single sample resolve_fbo */
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo.handle);
resolve_fbo.set_viewport();
draw_pattern();
/* Blit resolve_fbo to the right half of window system framebuffer. This
* is a reference image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
pattern_width, 0, 2 * pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Test drawing bitmap in multisample FBO */
pass = test_multisample_bitmap() && pass;
if (!piglit_automatic)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
/* Draw test pattern in single sample resolve_fbo with GL_POLYGON_STIPPLE
* enabled.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo.handle);
resolve_fbo.set_viewport();
draw_pattern();
/* Blit resolve_fbo to the right half of window system framebuffer. This
* is a reference image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
pattern_width, 0, 2 * pattern_width, pattern_height,
buffer_to_test, GL_NEAREST);
/* Test with multisample FBO and GL_POLYGON_STIPPLE enabled */
pass = test_polygon_stipple() && pass;
if (!piglit_automatic &&
buffer_to_test != GL_DEPTH_BUFFER_BIT)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
draw_test_image(bool sample_alpha_to_coverage, bool sample_alpha_to_one)
{
/* Draw test pattern in multisample ms_fbo with
* GL_SAMPLE_ALPHA_TO_COVERAGE enabled
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
glDrawBuffers(num_draw_buffers, draw_buffers);
ms_fbo.set_viewport();
draw_pattern(sample_alpha_to_coverage,
sample_alpha_to_one,
false /* is_reference_image */,
color);
for(int i = 0; i < num_draw_buffers; i++) {
/* Blit ms_fbo to singlesample FBO to resolve multisample
* buffer.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, ms_fbo.handle);
if(buffer_to_test == GL_COLOR_BUFFER_BIT)
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT + i);
if ( is_buffer_zero_integer_format && !i)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER,
resolve_int_fbo.handle);
else
glBindFramebuffer(GL_DRAW_FRAMEBUFFER,
resolve_fbo.handle);
/* Blit all the draw buffers to resolve_fbo / resolve_int_fbo
* with different y_offset.
*/
unsigned y_offset = i * pattern_height;
glBlitFramebuffer(0, 0,
pattern_width, pattern_height,
0, y_offset,
pattern_width, pattern_height + y_offset,
buffer_to_test, GL_NEAREST);
if(buffer_to_test == GL_COLOR_BUFFER_BIT) {
draw_image_to_window_system_fb(i /* draw_buffer_count */,
false /* rhs */);
}
/* Expected color values for all the draw buffers are computed
* to aid probe_framebuffer_color() and probe_framebuffer_depth()
* in verification.
*/
if(sample_alpha_to_coverage || is_dual_src_blending) {
/* Expected color is different for different draw
* buffers
*/
compute_expected(sample_alpha_to_coverage,
sample_alpha_to_one,
i /* draw_buffer_count */);
}
}
}
void
draw_reference_image(bool sample_alpha_to_coverage, bool sample_alpha_to_one)
{
/* Draw test pattern in multisample ms_fbo with
* GL_SAMPLE_ALPHA_TO_COVERAGE disabled.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
glDrawBuffers(num_draw_buffers, draw_buffers);
ms_fbo.set_viewport();
if(sample_alpha_to_coverage) {
draw_pattern(sample_alpha_to_coverage,
sample_alpha_to_one,
true /* is_reference_image */,
color);
}
else {
/* Value of draw_buffer_count doesn't matter in this case */
compute_expected(sample_alpha_to_coverage,
sample_alpha_to_one,
0 /* draw_buffer_count */);
draw_pattern(sample_alpha_to_coverage,
sample_alpha_to_one,
true /* is_reference_image */,
expected_color);
}
for(int i = 0; i < num_draw_buffers; i++) {
/* Blit ms_fbo to resolve_fbo to resolve multisample buffer */
glBindFramebuffer(GL_READ_FRAMEBUFFER, ms_fbo.handle);
if (buffer_to_test == GL_COLOR_BUFFER_BIT)
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT + i);
if (is_buffer_zero_integer_format && !i) {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER,
resolve_int_fbo.handle);
}
else {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER,
resolve_fbo.handle);
}
/* Blit all the draw buffers to resolve_fbo with different
* y_offset.
*/
unsigned y_offset = i * pattern_height;
glBlitFramebuffer(0, 0,
pattern_width, pattern_height,
0, y_offset,
pattern_width, pattern_height + y_offset,
buffer_to_test, GL_NEAREST);
if(buffer_to_test == GL_COLOR_BUFFER_BIT) {
draw_image_to_window_system_fb(i /* draw_buffer_count */,
true /* rhs */);
}
}
}
enum piglit_result
piglit_display()
{
bool pass = true;
/* Draw the test pattern in src_fbo. */
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, src_fbo.handle);
src_fbo.set_viewport();
test_pattern->draw(TestPattern::no_projection);
/* Blit from src_fbo to dst_fbo, scrambling the pattern as we go. */
glBindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst_fbo.handle);
scrambling_blit(permutation);
/* Blit from dst_fbo to the left half of the window system
* framebuffer, unscrambling as we go.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, dst_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
scrambling_blit(inverse_permutation);
/* Blit from src_fbo to dst_fbo with no scrambling. */
glBindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst_fbo.handle);
glBlitFramebuffer(0, 0, pattern_size, pattern_size,
0, 0, pattern_size, pattern_size,
buffer_to_test, GL_NEAREST);
/* Blit from dst_fbo to the right half of the window system
* framebuffer, with no scrambling.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, dst_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, pattern_size, pattern_size,
pattern_size, 0, pattern_size*2, pattern_size,
buffer_to_test, GL_NEAREST);
/* If we were testing depth or stencil, manifest the image so
* that we can see it.
*/
glViewport(0, 0, piglit_width, piglit_height);
if (manifest_program)
manifest_program->run();
/* Check that the left and right halves of the screen match. */
glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
pass = piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width,
piglit_height) && pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
/* Draw the full test pattern on the right half of the piglit
* window, as a reference image.
*
* To map the full test pattern to the right half of the
* windows, we need a projection matrix that multiplies the X
* coordinate by 0.5 and adds 0.5.
*/
float proj[4][4] = {
{ 0.5, 0, 0, 0.5 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
};
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glViewport(0, 0, piglit_width, piglit_height);
test_pattern->draw(proj);
/* Blit the test pattern to multisample_fbo, forcing the
* implementation to upsample it.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisample_fbo.handle);
glBlitFramebuffer(pattern_width, 0, pattern_width*2, pattern_height,
0, 0, pattern_width, pattern_height,
buffer_to_test, GL_NEAREST);
if (manifest_program) {
/* Manifest the test pattern in the main framebuffer. */
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
manifest_program->run();
/* Manifest the test pattern in the multisample
* framebuffer.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisample_fbo.handle);
multisample_fbo.set_viewport();
manifest_program->run();
}
/* Blit the manifested test pattern to the left half of the
* main framebuffer, forcing the implementation to downsample
* it.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, multisample_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Check that the left and right halves of the screen match.
* If they don't, then there is either a problem with
* upsampling or downsampling. Since downsampling is already
* tested by accuracy.cpp, we'll assume that any problem we
* see here is due to upsampling.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
pass = piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width,
piglit_height) && pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
float proj[4][4] = {
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 } };
/* Draw test pattern in multisample test_fbo with GL_LINE_SMOOTH
* disabled.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, test_fbo.handle);
glClear(buffer_to_test);
test_fbo.set_viewport();
test_pattern->draw(proj);
/* Blit test_fbo to the right half of window system framebuffer.
* This is the reference image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, test_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
pattern_width, 0, 2*pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Draw test pattern in mulisample test_fbo with GL_LINE_SMOOTH
* enabled
*/
glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
/* Disable depth test to correctly render overlapping smooth
* primitives. Otherwise we have to render the primitives in
* back to front order
*/
glDisable (GL_DEPTH_TEST);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, test_fbo.handle);
test_fbo.set_viewport();
test_pattern->draw(proj);
glDisable(GL_LINE_SMOOTH);
/* Now blit test_fbo to the left half of window system framebuffer.
* This is the test image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, test_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Check that the left and right halves of the screen match. If they
* don't, then GL_LINE_SMOOTH is not ignored with multisample
* rendering.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
pass = piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width,
piglit_height) && pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
int samples, i, j;
glUseProgram(prog_0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisampled_tex.handle);
multisampled_tex.set_viewport();
glGetIntegerv(GL_SAMPLES, &samples);
samples = MAX2(samples, 1);
glClear(GL_COLOR_BUFFER_BIT);
glUniform1i(glGetUniformLocation(prog_0, "samples"), samples);
piglit_draw_rect(-1, -1, 2, 2);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glViewport(0, 0, piglit_width, piglit_height);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(prog_1);
glUniform1i(glGetUniformLocation(prog_1, "tex"), 0);
glUniform1i(glGetUniformLocation(prog_1, "samples"), samples);
if (samples <= 4)
piglit_draw_rect(-1, -1,
8*(1 << samples) * (2.0/piglit_width),
8 * (2.0/piglit_height));
else if (samples == 8)
piglit_draw_rect(-1, -1,
8*16 * (2.0/piglit_width),
8*16 * (2.0/piglit_height));
else
assert(0 && "Unimplemented");
for (i = 0; i < multisampled_tex.config.width; i++) {
float color[4];
unsigned full_mask = (1 << samples) - 1;
unsigned expected_mask = i & full_mask;
unsigned observed_mask = 0;
if (multisampled_tex.config.num_samples == 0)
expected_mask = full_mask;
glReadPixels((i % 16) * 8 + 4,
(i / 16) * 8 + 4,
1, 1, GL_RGBA, GL_FLOAT, color);
for (j = 0; j < 4; j++) {
if (equal(color[j], 1) || equal(color[j], 0.6))
observed_mask |= 1 << (j + 0);
if (equal(color[j], 1) || equal(color[j], 0.4))
observed_mask |= 1 << (j + 4);
}
if (expected_mask != observed_mask) {
printf("Test failed, samples = %u\n"
" Expected sample mask: 0x%x\n"
" Observed sample mask: 0x%x\n",
samples, expected_mask, observed_mask);
pass = false;
}
}
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
float proj[4][4] = {
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
};
/* Draw test pattern in multisample ms_fbo with GL_POLYGON_SMOOTH
* disabled.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
ms_fbo.set_viewport();
test_pattern->draw(proj);
/* Blit ms_fbo to the right half of window system framebuffer. This
* is a reference image to test MSAA with polygon smooth.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, ms_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
pattern_width, 0, 2 * pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Now draw test pattern in mulisample ms_fbo with GL_POLYGON_SMOOTH
* enabled
*/
glDisable(GL_DEPTH_TEST);
glEnable(GL_POLYGON_SMOOTH);
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
ms_fbo.set_viewport();
glClear(buffer_to_test);
test_pattern->draw(proj);
glDisable(GL_POLYGON_SMOOTH);
/* Blit ms_fbo to the left half of window system framebuffer. This
* is the test image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, ms_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Check that the left and right halves of the screen match. If they
* don't, then GL_POLYGON_SMOOTH is not ignored with multisample
* rendering.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
pass = piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width,
piglit_height) && pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}