C++ (Cpp) test_readpixels Examples

Example #1

File: fbo-stencil.c Project: blaztinn/piglit

enum piglit_result piglit_display(void)
{
	enum piglit_result res;
	GLuint fb, rb;
	GLint stencil_size;
	GLenum status;

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	/* Create the FBO. */
	glGenRenderbuffersEXT(1, &rb);
	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
	glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, f.iformat, BUF_SIZE, BUF_SIZE);
	glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_STENCIL_SIZE_EXT, &stencil_size);
	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);

	glGenFramebuffersEXT(1, &fb);
	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT,
				     GL_RENDERBUFFER_EXT, rb);
	glViewport(0, 0, BUF_SIZE, BUF_SIZE);
	glDrawBuffer(GL_NONE);
	glReadBuffer(GL_NONE);
	status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
	if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
		printf("FBO incomplete status 0x%X\n", status);
		piglit_report_result(PIGLIT_SKIP);
	}

	mask = (1 << stencil_size) - 1;

	switch (test) {
	case CLEAR:
		puts("Testing glClear(stencil).");
		res = test_clear();
		break;
	case READPIXELS:
		puts("Testing glReadPixels(stencil).");
		res = test_readpixels();
		break;
	case DRAWPIXELS:
		puts("Testing glDrawPixels(stencil).");
		res = test_drawpixels();
		break;
	case COPYPIXELS:
	case BLIT:
		puts(test == BLIT ?
		     "Testing glBlitFramebuffer(stencil)." :
		     "Testing glCopyPixels(stencil).");
		res = test_copy();
		break;
	default:
		assert(0);
	}

	/* Cleanup. */
	glDeleteFramebuffersEXT(1, &fb);
	glDeleteRenderbuffersEXT(1, &rb);

	glutSwapBuffers();

	assert(glGetError() == 0);
	return res;
}

Example #2

File: fbo-depth.c Project: BNieuwenhuizen/piglit

enum piglit_result piglit_display(void)
{
	enum piglit_result res;
	GLuint fb, rb;
	GLenum status;

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	/* Create the FBO. */
	glGenRenderbuffersEXT(1, &rb);
	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
	glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, f.iformat, BUF_SIZE, BUF_SIZE);
	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);

	glGenFramebuffersEXT(1, &fb);
	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT,
				     GL_RENDERBUFFER_EXT, rb);
	glViewport(0, 0, BUF_SIZE, BUF_SIZE);
	glDrawBuffer(GL_NONE);
	glReadBuffer(GL_NONE);
	status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
	if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
		printf("FBO incomplete status 0x%X\n", status);
		piglit_report_result(PIGLIT_SKIP);
	}

	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
	glPixelStorei(GL_PACK_ALIGNMENT, 1);

	switch (test) {
	case CLEAR:
		puts("Testing glClear(depth).");
		res = test_clear();
		break;
	case READPIXELS:
		puts("Testing glReadPixels(depth).");
		res = test_readpixels();
		break;
	case DRAWPIXELS:
		puts("Testing glDrawPixels(depth).");
		res = test_drawpixels();
		break;
	case COPYPIXELS:
	case BLIT:
		puts(test == BLIT ?
		     "Testing glBlitFramebuffer(depth)." :
		     "Testing glCopyPixels(depth).");
		res = test_copy();
		break;
	default:
		assert(0);
		res = PIGLIT_SKIP;
	}

	/* Cleanup. */
	glBindFramebufferEXT(GL_FRAMEBUFFER, piglit_winsys_fbo);
	glDeleteFramebuffersEXT(1, &fb);
	glDeleteRenderbuffersEXT(1, &rb);

	piglit_present_results();

	if (!piglit_check_gl_error(GL_NO_ERROR))
		piglit_report_result(PIGLIT_FAIL);
	return res;
}