enum piglit_result piglit_display(void) { static const char *frag_src = "!!ARBfp1.0\n" "TEX result.color, fragment.texcoord[0], texture[0], 2D;\n" "END"; static const struct { int x; int y; float color[3]; } expected[] = { { 64, 240, {0.1f, 0.1f, 0.1f}}, { 192, 240, {0.3f, 0.3f, 0.3f}}, { 320, 240, {0.5f, 0.5f, 0.5f}}, { 448, 240, {0.7f, 0.7f, 0.7f}}, { 576, 240, {0.9f, 0.9f, 0.9f}}, }; GLuint fbo, frag, db_tex, cb_tex; GLboolean pass = GL_TRUE; char *tex_data; unsigned int i; frag = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, frag_src); glGenFramebuffersEXT(1, &fbo); glGenTextures(1, &cb_tex); glGenTextures(1, &db_tex); tex_data = calloc(piglit_width * piglit_height, 4); glBindTexture(GL_TEXTURE_2D, db_tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, piglit_width, piglit_height, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, tex_data); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glBindTexture(GL_TEXTURE_2D, cb_tex); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, piglit_width, piglit_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, tex_data); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); free(tex_data); glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo); glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, db_tex, 0); glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, cb_tex, 0); check_fbo_status(); glViewport(0, 0, piglit_width, piglit_height); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_ALWAYS); glDepthMask(GL_TRUE); /* Draw with the texture to make sure a sampler view is created for * it before it's used as depth buffer by the FBO. */ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); glBindTexture(GL_TEXTURE_2D, db_tex); glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, frag); glEnable(GL_FRAGMENT_PROGRAM_ARB); glEnable(GL_TEXTURE_2D); piglit_draw_rect_tex(-1.0f, -1.0f, 2.0f, 2.0f, 0.0f, 0.0f, 1.0f, 1.0f); /* Fill the depth buffer with a gradient. */ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo); check_fbo_status(); glDisable(GL_FRAGMENT_PROGRAM_ARB); glDisable(GL_TEXTURE_2D); glClearColor(1.0f, 1.0f, 1.0f, 1.0f); glClearDepth(0.5f); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glColor3f(0.0f, 1.0f, 1.0f); glBegin(GL_TRIANGLE_STRIP); glVertex3f(-1.0f, -1.0f, -1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glVertex3f( 1.0f, -1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glEnd(); /* Draw the depth texture as greyscale to the backbuffer. */ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); glEnable(GL_FRAGMENT_PROGRAM_ARB); glEnable(GL_TEXTURE_2D); piglit_draw_rect_tex(-1.0f, -1.0f, 2.0f, 2.0f, 0.0f, 0.0f, 1.0f, 1.0f); for (i = 0; i < sizeof(expected) / sizeof(*expected); ++i) { pass &= piglit_probe_pixel_rgb(expected[i].x, expected[i].y, expected[i].color); } piglit_present_results(); return pass ? PIGLIT_PASS : PIGLIT_FAIL; }
enum piglit_result piglit_display(void) { static GLenum buffers[] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT}; static const float red[] = {1.0f, 0.0f, 0.0f}; static const float green[] = {0.0f, 1.0f, 0.0f}; static const float blue[] = {0.0f, 0.0f, 1.0f}; static const struct { GLsizei buffer_count; const float *clear_color; const float *expected_0; const float *expected_1; } tests[] = { {2, red, red, red}, {1, green, green, red}, {2, blue, blue, blue}, }; int w = piglit_width; int h = piglit_height; GLuint fbo, tex[2]; unsigned i; glGenTextures(2, tex); glBindTexture(GL_TEXTURE_2D, tex[0]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); glBindTexture(GL_TEXTURE_2D, tex[1]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); glGenFramebuffersEXT(1, &fbo); glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo); glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tex[0], 0); glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_2D, tex[1], 0); check_fbo_status(); if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); for (i = 0; i < sizeof(tests) / sizeof(*tests); ++i) { GLint buffer, expected_buffer; glDrawBuffersARB(tests[i].buffer_count, buffers); check_fbo_status(); glGetIntegerv(GL_DRAW_BUFFER1_ARB, &buffer); expected_buffer = tests[i].buffer_count < 2 ? GL_NONE : GL_COLOR_ATTACHMENT1_EXT; if (buffer != expected_buffer) { printf("Unexpected buffer %#x for DRAW_BUFFER1_ARB in test %u, expected %#x.\n", buffer, i, expected_buffer); piglit_report_result(PIGLIT_FAIL); } glClearColor(tests[i].clear_color[0], tests[i].clear_color[1], tests[i].clear_color[2], 1.0f); glClear(GL_COLOR_BUFFER_BIT); glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); if (!piglit_probe_pixel_rgb(w / 2, h / 2, tests[i].expected_0)) { printf("Probe failed for test %u, attachment 0.\n", i); piglit_report_result(PIGLIT_FAIL); } glReadBuffer(GL_COLOR_ATTACHMENT1_EXT); if (!piglit_probe_pixel_rgb(w / 2, h / 2, tests[i].expected_1)) { printf("Probe failed for test %u, attachment 1.\n", i); piglit_report_result(PIGLIT_FAIL); } } if (!piglit_check_gl_error(GL_NO_ERROR)) piglit_report_result(PIGLIT_FAIL); return PIGLIT_PASS; }