void
piglit_init(int argc, char **argv)
{
if (argc != 2)
print_usage_and_exit(argv[0]);
/* 1st arg: num_samples */
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
piglit_require_extension("GL_ARB_vertex_array_object");
piglit_require_extension("GL_ARB_sample_shading");
piglit_require_GLSL_version(130);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
singlesampled_fbo.setup(FboConfig(0,
pattern_width,
pattern_height));
FboConfig msConfig(num_samples, pattern_width, pattern_height);
multisampled_fbo.setup(msConfig);
compile_shader();
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]);
/* 1st arg: num_samples */
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
piglit_require_extension("GL_ARB_texture_multisample");
piglit_require_extension("GL_ARB_sample_shading");
piglit_require_GLSL_version(140);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
FboConfig msConfig(num_samples, pattern_width, pattern_height);
msConfig.color_format = GL_RGBA_INTEGER;
msConfig.color_internalformat = GL_RGBA8UI;
multisampled_fbo.setup(msConfig);
msConfig.attach_texture = true;
multisampled_tex.setup(msConfig);
compile_shader();
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]);
{
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
piglit_require_gl_version(21);
piglit_require_extension("GL_ARB_framebuffer_object");
piglit_require_extension("GL_ARB_vertex_array_object");
piglit_ortho_projection(pattern_width, pattern_height, GL_TRUE);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
ms_fbo.setup(FboConfig(num_samples, pattern_width, pattern_height));
resolve_fbo.setup(FboConfig(0, pattern_width, pattern_height));
buffer_to_test = GL_COLOR_BUFFER_BIT;
shader_compile();
glEnable(GL_POLYGON_STIPPLE);
glPolygonStipple(stipple_pattern);
}
void
piglit_init(int argc, char **argv)
{
int num_samples;
int src_samples;
int dst_samples;
if (argc < 4)
print_usage_and_exit(argv[0]);
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
piglit_require_gl_version(21);
piglit_require_extension("GL_ARB_framebuffer_object");
piglit_require_extension("GL_ARB_vertex_array_object");
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
if (strcmp(argv[2], "color") == 0) {
test_pattern = new Triangles();
buffer_to_test = GL_COLOR_BUFFER_BIT;
} else if (strcmp(argv[2], "depth") == 0) {
test_pattern = new DepthSunburst();
manifest_program = new ManifestDepth();
buffer_to_test = GL_DEPTH_BUFFER_BIT;
} else if (strcmp(argv[2], "stencil") == 0) {
test_pattern = new StencilSunburst();
manifest_program = new ManifestStencil();
buffer_to_test = GL_STENCIL_BUFFER_BIT;
} else {
print_usage_and_exit(argv[0]);
}
if (strcmp(argv[3], "msaa") == 0) {
src_samples = dst_samples = num_samples;
} else if (strcmp(argv[3], "upsample") == 0) {
src_samples = 0;
dst_samples = num_samples;
} else if (strcmp(argv[3], "downsample") == 0) {
src_samples = num_samples;
dst_samples = 0;
} else {
print_usage_and_exit(argv[0]);
}
test_pattern->compile();
if (manifest_program)
manifest_program->compile();
src_fbo.setup(FboConfig(src_samples, pattern_size, pattern_size));
dst_fbo.setup(FboConfig(dst_samples, pattern_size, pattern_size));
}
void
piglit_init(int argc, char **argv)
{
piglit_require_gl_version(21);
piglit_require_extension("GL_ARB_framebuffer_object");
piglit_require_extension("GL_ARB_vertex_array_object");
/* Passing sample count = 1 will create the FBOs with minimum supported
* sample count. Both FBOs are created with GL_RGBA format by default.
*/
src_fbo.setup(FboConfig(1 /* sample count */,
pattern_width,
pattern_height));
dst_fbo.setup(FboConfig(1 /* sample count */,
pattern_width,
pattern_height));
/* Single-sampled FBO used so that we can call glReadPixels to
* examine the results.
*/
ss_fbo.setup(FboConfig(0 /* sample count */,
pattern_width,
pattern_height));
if (!piglit_check_gl_error(GL_NO_ERROR)) {
printf("Error setting up frame buffer objects\n");
piglit_report_result(PIGLIT_FAIL);
}
test_pattern = new ColorGradientSunburst(GL_FLOAT);
test_pattern->compile();
glBindFramebuffer(GL_FRAMEBUFFER, src_fbo.handle);
test_pattern->draw(TestPattern::no_projection);
/* Generate a reference image by downsampling between matching
* formats.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ss_fbo.handle);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
reference_image = (GLfloat *) malloc(pattern_width *
pattern_height * 4 *
sizeof(GLfloat));
glBindFramebuffer(GL_FRAMEBUFFER, ss_fbo.handle);
glReadPixels(0, 0, pattern_width, pattern_height,
GL_RGBA, GL_FLOAT, reference_image);
}
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 Fbo::blitTo( Fbo dst, const Area &srcArea, const Area &dstArea, GLenum filter, GLbitfield mask ) const
{
ScopedFramebuffer readScp( GL_READ_FRAMEBUFFER, mId );
ScopedFramebuffer drawScp( GL_DRAW_FRAMEBUFFER, dst.getId() );
glBlitFramebuffer( srcArea.getX1(), srcArea.getY1(), srcArea.getX2(), srcArea.getY2(), dstArea.getX1(), dstArea.getY1(), dstArea.getX2(), dstArea.getY2(), mask, filter );
}
void
piglit_init(int argc, char **argv)
{
int num_samples;
if (argc < 2)
print_usage_and_exit(argv[0]);
{
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
piglit_require_gl_version(21);
piglit_require_extension("GL_ARB_framebuffer_object");
piglit_require_extension("GL_ARB_vertex_array_object");
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
buffer_to_test = GL_COLOR_BUFFER_BIT;
test_pattern = new Triangles();
test_pattern->compile();
ms_fbo.setup(FboConfig(num_samples, pattern_width, pattern_height));
/* Enable blending to test GL_POLYGON_SMOOTH */
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA_SATURATE, GL_ONE);
}
void
piglit_init(int argc, char **argv)
{
int num_samples;
if (argc < 2)
print_usage_and_exit(argv[0]);
{
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
piglit_require_gl_version(30);
glClear(GL_COLOR_BUFFER_BIT);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
buffer_to_test = GL_COLOR_BUFFER_BIT;
test_pattern = new Lines();
test_pattern->compile();
test_fbo.setup(FboConfig(num_samples, pattern_width, pattern_height));
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA_SATURATE, GL_ONE);
}
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;
}
void Fbo::blitTo( Fbo dst, const Area &srcArea, const Area &dstArea, GLenum filter, GLbitfield mask ) const
{
SaveFramebufferBinding saveFboBinding;
glBindFramebufferEXT( GL_READ_FRAMEBUFFER_EXT, mObj->mId );
glBindFramebufferEXT( GL_DRAW_FRAMEBUFFER_EXT, dst.getId() );
glBlitFramebufferEXT( srcArea.getX1(), srcArea.getY1(), srcArea.getX2(), srcArea.getY2(), dstArea.getX1(), dstArea.getY1(), dstArea.getX2(), dstArea.getY2(), mask, filter );
}
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;
}
void Fbo::blit_to(Fbo the_dst_fbo, const Area_<int> &the_src, const Area_<int> &the_dst,
GLenum filter, GLbitfield mask) const
{
SaveFramebufferBinding sb;
glBindFramebuffer(GL_READ_FRAMEBUFFER, m_impl->m_id);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, the_dst_fbo.id());
glBlitFramebuffer(the_src.x0, the_src.y0, the_src.x1, the_src.y1, the_dst.x0, the_dst.y0,
the_dst.x1, the_dst.y1, mask, filter);
}
void
piglit_init(int argc, char **argv)
{
int num_samples;
if (argc < 3)
print_usage_and_exit(argv[0]);
{
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
piglit_require_gl_version(30);
piglit_require_GLSL_version(130);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
if (strcmp(argv[2], "color") == 0) {
test_pattern = new Triangles();
buffer_to_test = GL_COLOR_BUFFER_BIT;
} else if (strcmp(argv[2], "depth") == 0) {
test_pattern = new DepthSunburst();
manifest_program = new ManifestDepth();
buffer_to_test = GL_DEPTH_BUFFER_BIT;
} else if (strcmp(argv[2], "stencil") == 0) {
test_pattern = new StencilSunburst();
manifest_program = new ManifestStencil();
buffer_to_test = GL_STENCIL_BUFFER_BIT;
} else {
print_usage_and_exit(argv[0]);
}
test_pattern->compile();
if (manifest_program)
manifest_program->compile();
multisample_fbo.setup(FboConfig(num_samples, pattern_width,
pattern_height));
}
void
piglit_init(int argc, char **argv)
{
if (argc != 2)
print_usage_and_exit(argv[0]);
/* 1st arg: num_samples */
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
if (num_samples > 8) {
puts("This test only supports 8 samples.");
piglit_report_result(PIGLIT_SKIP);
}
piglit_require_extension("GL_ARB_texture_multisample");
piglit_require_extension("GL_ARB_sample_shading");
piglit_require_GLSL_version(130);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
FboConfig msConfig(num_samples, 1 << MAX2(num_samples, 1), 1);
msConfig.num_rb_attachments = 0;
msConfig.num_tex_attachments = 1;
multisampled_tex.setup(msConfig);
compile_shader();
if (!piglit_check_gl_error(GL_NO_ERROR)) {
piglit_report_result(PIGLIT_FAIL);
}
}
void
ms_fbo_and_draw_buffers_setup(int samples,
int width,
int height,
int n_attachments,
GLenum test_buffer,
GLenum color_buffer_zero_format)
{
int maxBuffers;
glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &maxBuffers);
/* Ensure that requested number of color attachments are
* supported by the implementation and fragment shader.
*/
if (n_attachments <= (int) ARRAY_SIZE(draw_buffers) &&
n_attachments <= maxBuffers)
num_draw_buffers = n_attachments;
else {
printf("Number of attachments requested are not supported\n");
piglit_report_result(PIGLIT_SKIP);
}
pattern_width = width;
pattern_height = height;
draw_buffer_zero_format = color_buffer_zero_format;
/* Setup frame buffer objects with required configuration */
FboConfig ms_config(samples, pattern_width, pattern_height);
ms_config.color_internalformat = color_buffer_zero_format;
ms_fbo.setup(ms_config);
/* Create resolve_fbo with dimensions large enough to accomodate
* all the draw buffers
*/
FboConfig resolve_config(0, pattern_width,
num_draw_buffers * pattern_height);
resolve_config.color_internalformat = GL_RGBA;
resolve_fbo.setup(resolve_config);
/* Create resolve_int_fbo to store downsampled integer draw buffer */
if (color_buffer_zero_format == GL_RGBA8I) {
resolve_config.color_internalformat = GL_RGBA8I;
/* Assuming single integer buffer */
resolve_config.height = pattern_height;
resolve_int_fbo.setup(resolve_config);
is_buffer_zero_integer_format = true;
}
else if (color_buffer_zero_format != GL_RGBA &&
color_buffer_zero_format != GL_NONE) {
printf("Draw buffer zero format is not"
" supported by test functions.\n");
piglit_report_result(PIGLIT_FAIL);
}
if (!piglit_check_gl_error(GL_NO_ERROR)) {
printf("Error setting up frame buffer objects\n");
piglit_report_result(PIGLIT_FAIL);
}
/* Query the number of samples used in ms_fbo. OpenGL implementation
* may create FBO with more samples per pixel than what is requested.
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
glGetIntegerv(GL_SAMPLES, &num_samples);
/* Attach additional color buffers to multisample FBO with default
* non-integer format (GL_RGBA.)
*/
GLuint *color_rb = (GLuint *)malloc((num_draw_buffers - 1) *
sizeof(GLuint));
glGenRenderbuffers(num_draw_buffers - 1, color_rb);
for(int i = 0; i < num_draw_buffers - 1; i++) {
glBindRenderbuffer(GL_RENDERBUFFER, color_rb[i]);
glRenderbufferStorageMultisample(GL_RENDERBUFFER,
ms_fbo.config.num_samples,
GL_RGBA,
ms_fbo.config.width,
ms_fbo.config.height);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0 + (i + 1),
GL_RENDERBUFFER,
color_rb[i]);
}
GLenum status = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
printf("Error attaching additional color buffers\n");
piglit_report_result(PIGLIT_FAIL);
}
buffer_to_test = test_buffer;
free(color_rb);
}
int main(int argc, char **argv)
{
Config cfg = readConfig(); // Misc.cpp
Scene_SDL* CurrentScene = new Scene_SDL(cfg.ResolutionX,cfg.ResolutionY);
vec2 resolution = vec2(cfg.ResolutionX, cfg.ResolutionY);
Vao vaoA = Vao("Mesh/thing.obj");
vaoA.load(vec4(0,0,0,0));
Vao vaoB = Vao("Mesh/plane.obj");
vaoB.load(vec4(0, 0, 0, 0));
TextureCfg texCfgA = { GL_RGB8, GL_NEAREST, GL_REPEAT };
Texture texA = Texture("Texture/checker.png", texCfgA);
texA.load();
Shader shaderForward = Shader("Shader/test.vert", "Shader/test.frag");
shaderForward.load();
Shader shaderGeometry = Shader("Shader/defPass1.vert", "Shader/defPass1.frag");
shaderGeometry.load();
Shader shaderDeferred = Shader("Shader/defPassN.vert", "Shader/defPassN.frag");
shaderDeferred.load();
Shader shaderDeferredDebug = Shader("Shader/defPassN.vert", "Shader/defPassNDebug.frag");
shaderDeferredDebug.load();
Shader* shaderSelected = &shaderDeferred;
Shader shaderAO = Shader("Shader/defPassN.vert", "Shader/AO.frag");
shaderAO.load();
Fbo* fboGeometry = createFboGeometry(cfg); // Misc.cpp
Fbo* fboAO = createFbo_1ch(cfg);
Vao2D supportFbo = Vao2D();
supportFbo.load();
glm::mat4 projection;
glm::mat4 modelview;
glm::mat4 view;
projection = glm::perspective(70.0*M_PI/180.0, (double)cfg.ResolutionX / (double)cfg.ResolutionY, 0.01, 100.0);
view = glm::lookAt(glm::vec3(2,2,2), glm::vec3(0, 0, 0.5), glm::vec3(0, 0, 1));
GLuint mAttach[3] = { GL_COLOR_ATTACHMENT0 , GL_COLOR_ATTACHMENT1 ,GL_COLOR_ATTACHMENT2 };
Input input;
int frame = 0;
while (!input.end()) {
frame++;
input.update();
if (input.getRisingKey(SDL_SCANCODE_SPACE)) {
shaderSelected = (shaderSelected == &shaderDeferredDebug) ? &shaderDeferred : &shaderDeferredDebug;
}
glViewport(0, 0, cfg.ResolutionX, cfg.ResolutionY);
glBindFramebuffer(GL_FRAMEBUFFER, fboGeometry->getId());
glDrawBuffers(3, mAttach);
glDisable(GL_BLEND);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(shaderGeometry.getProgramID());
glUniformMatrix4fv(glGetUniformLocation(shaderGeometry.getProgramID(), "projection"), 1, GL_FALSE, value_ptr(projection));
glUniform2fv(glGetUniformLocation(shaderGeometry.getProgramID(), "resolution"), 1, value_ptr(resolution));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texA.getId());
glUniform1i(glGetUniformLocation(shaderGeometry.getProgramID(), "texture_diffuse"), 0);
modelview = rotate(view, (input.getX() - cfg.ResolutionX) / 200.0f, vec3(0.0f, 0.0f, 1.0f));
modelview = translate(modelview, vec3(0, 0, 0.8));
glUniformMatrix4fv(glGetUniformLocation(shaderGeometry.getProgramID(), "modelview"), 1, GL_FALSE, value_ptr(modelview));
glUniformMatrix3fv(glGetUniformLocation(shaderGeometry.getProgramID(), "normal"), 1, GL_FALSE, value_ptr(transpose(inverse(glm::mat3(modelview)))));
vaoA.draw();
modelview = view;
glUniformMatrix4fv(glGetUniformLocation(shaderGeometry.getProgramID(), "modelview"), 1, GL_FALSE, value_ptr(modelview));
glUniformMatrix3fv(glGetUniformLocation(shaderGeometry.getProgramID(), "normal"), 1, GL_FALSE, value_ptr(transpose(inverse(glm::mat3(modelview)))));
vaoB.draw();
glBindTexture(GL_TEXTURE_2D, 0);
glUseProgram(0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glEnable(GL_BLEND);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(shaderSelected->getProgramID());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fboGeometry->getColorBufferId(0));
glUniform1i(glGetUniformLocation(shaderSelected->getProgramID(), "gNormal"), 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, fboGeometry->getColorBufferId(1));
glUniform1i(glGetUniformLocation(shaderSelected->getProgramID(), "gDiffuse"), 1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, fboGeometry->getColorBufferId(2));
glUniform1i(glGetUniformLocation(shaderSelected->getProgramID(), "gPosition"), 2);
glUniformMatrix4fv(glGetUniformLocation(shaderSelected->getProgramID(), "projection"), 1, GL_FALSE, value_ptr(projection));
glUniform1f(glGetUniformLocation(shaderSelected->getProgramID(), "varA"), input.getY() / resolution.y);
glUniform1i(glGetUniformLocation(shaderSelected->getProgramID(), "time"), frame);
glUniform2fv(glGetUniformLocation(shaderSelected->getProgramID(), "resolution"), 1, value_ptr(resolution));
supportFbo.draw();
CurrentScene->flip();
}
delete CurrentScene;
return 0;
}
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;
}
int CreateGlContext()
{
hDC = ::GetDC(glHwnd);
if(!hDC)
return -1;
PIXELFORMATDESCRIPTOR pfd;
memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags =
PFD_DRAW_TO_WINDOW |
PFD_DOUBLEBUFFER |
PFD_SUPPORT_OPENGL |
//PFD_SUPPORT_COMPOSITION |
0x00008000 |
PFD_GENERIC_ACCELERATED;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cDepthBits = 24;
pfd.cStencilBits = 8;
pfd.iLayerType = PFD_MAIN_PLANE;
int pf = ChoosePixelFormat(hDC, &pfd);
if(!pf) {
error ="ChoosePixelFormat error";
return -2;
}
RLOG("OpenGL: ChoosePixelFormat ok..");
if(!SetPixelFormat(hDC, pf, &pfd)) {
error = "SetPixelFormat error";
return -3;
}
DescribePixelFormat(hDC, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
hRC = wglCreateContext(hDC);
if(!hRC)
{
error = "wglCreateContext error";
return -4;
}
RLOG("OpenGL: wglCreateContext ok..");
if(!wglMakeCurrent(hDC, hRC))
{
error = "wglMakeCurrent error";
return -5;
}
RLOG("OpenGL: wglMakeCurrent ok..");
GLenum err = glewInit();
if(err != GLEW_OK)
{
error = "Glew library initialization error: " + String((const char*) glewGetErrorString(err));
return -6;
}
RLOG("OpenGL: glewInit ok..");
Size sz = Ctrl::GetScreenSize();
if(!screenFbo0.Create(sz.cx, sz.cy))
{
error = "Creating screen 0 fbo error: " + screenFbo0.GetError();
return -7;
}
if(!screenFbo1.Create(sz.cx, sz.cy))
{
error = "Creating screen 1 fbo error: " + screenFbo1.GetError();
return -7;
}
RLOG("OpenGL: Creating fbo ok..");
alphaMagProg.CompileProgram(alphaMagVert, alphaMagFrag);
if(alphaMagProg.GetProgram() < 0)
{
error = alphaMagProg.GetError();
return -8;
}
blurProg.CompileProgram(blurVert, blurFrag);
if(blurProg.GetProgram() < 0)
{
error = blurProg.GetError();
return -8;
}
RLOG("OpenGL: CompileProgram ok..");
resources.GetFont(Tahoma(), true);
resources.GetFont(Tahoma().Bold(), true);
RLOG("OpenGL: Preloading fonts ok..");
wglSwapIntervalEXT(1);
if(glDrawMode == DRAW_ON_TIMER)
{
SetTimer(glHwnd, 1, 10, NULL);
RLOG("OpenGL: SetTimer ok..");
}
glReady = true;
return 1;
}
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;
/* 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 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;
}
enum piglit_result
piglit_display()
{
bool pass = true;
GLfloat *expected_image;
GLuint i;
FboConfig config_ms(1 , pattern_width, pattern_height);
for(i = 0; i < ARRAY_SIZE(color_formats); i++) {
expected_image =
generate_expected_image(reference_image,
pattern_width, pattern_height,
color_formats[i].components);
config_ms.color_internalformat = color_formats[i].name;
src_fbo.setup(config_ms);
if (!piglit_check_gl_error(GL_NO_ERROR)) {
printf("Error setting up renderbuffer color format\n");
piglit_report_result(PIGLIT_FAIL);
}
glBindFramebuffer(GL_FRAMEBUFFER, src_fbo.handle);
test_pattern->draw(TestPattern::no_projection);
/* Blit multisample-to-multisample with non-matching formats */
glBindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst_fbo.handle);
glClear(GL_COLOR_BUFFER_BIT);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Blitting between different formats shouldn't
* generate an error.
*/
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Downsample the blitted buffer so we can read the
* results
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, dst_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ss_fbo.handle);
glClear(GL_COLOR_BUFFER_BIT);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindFramebuffer(GL_FRAMEBUFFER, ss_fbo.handle);
pass = piglit_probe_image_rgba(0, 0,
pattern_width, pattern_height,
expected_image) && pass;
/* Also try a downsample blit with mismatched formats
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, src_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ss_fbo.handle);
glClear(GL_COLOR_BUFFER_BIT);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindFramebuffer(GL_FRAMEBUFFER, ss_fbo.handle);
pass = piglit_probe_image_rgba(0, 0,
pattern_width, pattern_height,
expected_image) && pass;
/* Blit the result to the window system buffer so that
* something will be displayed in a non-automatic
* test.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, ss_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glClear(GL_COLOR_BUFFER_BIT);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
free(expected_image);
}
return (pass ? PIGLIT_PASS : PIGLIT_FAIL);
}