enum piglit_result
test_clearing(void)
{
static const GLfloat purple[] = {1.0, 0.0, 1.0};
static const GLfloat blue[] = {0.0, 0.0, 1.0};
static const GLfloat green[] = {0.0, 1.0, 0.0};
GLenum err;
GLboolean pass = GL_TRUE;
while (glGetError() != GL_NO_ERROR)
;
/* Front buffer. */
glDrawBuffer(GL_FRONT);
glClearBufferfv(GL_COLOR, 0, purple);
err = glGetError();
if (err) {
printf("%s: glClearBufferfv(GL_FRONT) generated error 0x%x.\n", Prog, err);
return PIGLIT_FAIL;
}
glReadBuffer(GL_FRONT);
if (!piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, purple)) {
printf(" from glClearBufferfv(GL_FRONT) failed.\n");
pass = GL_FALSE;
}
/* Back buffer. */
glDrawBuffer(GL_BACK);
glClearBufferfv(GL_COLOR, 0, blue);
err = glGetError();
if (err) {
printf("%s: glClearBufferfv(GL_BACK) generated error 0x%x.\n", Prog, err);
return PIGLIT_FAIL;
}
glReadBuffer(GL_BACK);
if (!piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, blue)) {
printf(" from glClearBufferfv(GL_BACK) failed.\n");
pass = GL_FALSE;
}
/* Front and back buffer. */
glDrawBuffer(GL_FRONT_AND_BACK);
glClearBufferfv(GL_COLOR, 0, green);
err = glGetError();
if (err) {
printf("%s: glClearBufferfv(GL_FRONT_AND_BACK) generated error 0x%x.\n", Prog, err);
return PIGLIT_FAIL;
}
glReadBuffer(GL_FRONT);
if (!piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, green)) {
printf(" the front buffer from glClearBufferfv(GL_FRONT_AND_BACK) failed.\n");
pass = GL_FALSE;
}
glReadBuffer(GL_BACK);
if (!piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, green)) {
printf(" the back buffer from glClearBufferfv(GL_FRONT_AND_BACK) failed.\n");
pass = GL_FALSE;
}
/* Depth & Stencil */
glClearBufferfi(GL_DEPTH_STENCIL, 0, 0.5, 3);
err = glGetError();
if (err) {
printf("%s: glClearBufferfi() generated error 0x%x.\n", Prog, err);
return PIGLIT_FAIL;
}
if (!piglit_probe_rect_depth(0, 0, piglit_width, piglit_height, 0.5)) {
printf(" from glClearBufferfi() failed.\n");
pass = GL_FALSE;
}
if (!piglit_probe_rect_stencil(0, 0, piglit_width, piglit_height, 3)) {
printf(" from glClearBufferfi() failed.\n");
pass = GL_FALSE;
}
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
GLint i, j;
GLuint width = 16, height = 16;
GLint x = 12, y = 12;
GLfloat buf[IMAGE_WIDTH][IMAGE_HEIGHT];
GLfloat depth_val = 0.75, stencil_val = 2.0;
GLfloat green[4] = {0.0, 1.0, 0.0, 0.0};
bool pass = true;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor4fv(green);
piglit_draw_rect(0, 0, width, height);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_COLOR);
pass = pass && piglit_probe_rect_rgba(x, y, width, height, green);
/* Initialize depth data */
for (i = 0; i < IMAGE_HEIGHT; i++) {
for(j = 0; j < IMAGE_WIDTH; j++)
buf[i][j] = depth_val;
}
glClearDepth(0.0);
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_ALWAYS);
glRasterPos2i(0, 0);
glDrawPixels(width, height,
GL_DEPTH_COMPONENT, GL_FLOAT, buf);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_DEPTH);
pass = piglit_probe_rect_depth(x, y, width, height, depth_val)
&& pass;
/* Initialize stencil data */
for (i = 0; i < IMAGE_HEIGHT; i++) {
for(j = 0; j < IMAGE_WIDTH; j++)
buf[i][j] = stencil_val;
}
glClearStencil(0.0);
glClear(GL_STENCIL_BUFFER_BIT);
glRasterPos2i(0, 0);
glDrawPixels(width, height,
GL_STENCIL_INDEX, GL_FLOAT, buf);
glRasterPos2i(x, y);
glCopyPixels(0, 0, width, height, GL_STENCIL);
pass = piglit_probe_rect_stencil(x, y, width, height, stencil_val)
&& pass;
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
