/**
* Test clamping for depth range near and far. Make sure clamped
* to [0, 1]. Test default values for near and far.
* OpenGL 4.3 Core section 13.6.1 ref:
* "Values in v are each clamped to the range [0, 1] when specified."
*
*/
static bool
depth_range_bounds(GLint maxVP)
{
bool pass = true;
GLdouble dr[2], drGet[2];
int i;
/* intial values for near, far are 0.0, 1.0 repsectively */
for (i = 0; i < maxVP; i++) {
glGetDoublei_v(GL_DEPTH_RANGE, i, dr);
if (dr[0] != 0.0 || dr[1] != 1.0) {
printf("depth_range default value wrong for idx %d\n",
i);
pass = false;
}
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* test clamping of depth_range values */
dr[0] = -0.001;
dr[1] = 2.0;
glDepthRangeArrayv(0, 1, dr);
glGetDoublei_v(GL_DEPTH_RANGE, 0, drGet);
if (drGet[0] != 0.0 || drGet[1] != 1.0) {
printf("depth_range clamping failed glDepthRangeArrayv\n");
pass = false;
}
glDepthRangeIndexed(1, dr[0], dr[1]);
glGetDoublei_v(GL_DEPTH_RANGE, 1, drGet);
if (drGet[0] != 0.0 || drGet[1] != 1.0) {
printf("depth_range clamping failed glDepthRangeIndexed\n");
pass = false;
}
return pass;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL41_nglDepthRangeIndexed(JNIEnv *env, jclass clazz, jint index, jdouble n, jdouble f, jlong function_pointer) {
glDepthRangeIndexedPROC glDepthRangeIndexed = (glDepthRangeIndexedPROC)((intptr_t)function_pointer);
glDepthRangeIndexed(index, n, f);
}
void GL3GraphicContextProvider::set_depth_range(int viewport, float n, float f)
{
OpenGL::set_active(this);
glDepthRangeIndexed(viewport, (float)n, (float)f);
}
