static int Scissor(lua_State *L)
{
GLint x, y;
GLsizei width, height;
GLint v[4];
GLint index;
if(lua_isinteger(L, 5))
{
v[0] = luaL_checkinteger(L, 1);
v[1] = luaL_checkinteger(L, 2);
v[2] = luaL_checkinteger(L, 3);
v[3] = luaL_checkinteger(L, 4);
index = luaL_checkinteger(L, 5);
glScissorIndexedv(index, v);
}
else
{
x = luaL_checkinteger(L, 1);
y = luaL_checkinteger(L, 2);
width = luaL_checkinteger(L, 3);
height = luaL_checkinteger(L, 4);
glScissor(x, y, width, height);
}
CheckError(L);
return 0;
}
/**
* Test invalid values for scissor left, bottom, width, height
* INVALID_VALUE for negative w,h. Test default values for left, bottom,
* width, height.
* OpenGL 4.3 Core section 13.6.1 ref:
* "In the initial state, left = bottom = 0, and width and
* height are determined by the size of the window into which the GL is
* to do its rendering for all viewports. If the default framebuffer is
* bound but no default framebuffer is associated with the GL context
* (see chapter 4), then width and height are initially set to zero."
*
* "If either width or height is less than zero for any scissor rectangle,
* then an INVALID_VALUE error is generated."
*/
static bool
scissor_bounds(GLint maxVP)
{
GLint sc[4];
bool pass = true;
int i;
/* intial values for left, bottom, width, height */
for (i = 0; i < maxVP; i++) {
glGetIntegeri_v(GL_SCISSOR_BOX, i, sc);
if (sc[0] != 0 || sc[1] != 0 || sc[2] != piglit_width ||
sc[3] != piglit_height) {
printf("scissor box default value wrong for idx %d\n",
i);
pass = false;
}
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* make sure large values don't cause gl errors */
glScissorIndexed(0, 0x8000, 0x80000000, 0x7ffff, 0x7fffffff);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* negative width, height gives gl error */
sc[2] = -10;
sc[3] = 0;
for (i = 0; i < 2; i++) {
glScissorArrayv(0, 1, sc);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
glScissorIndexed(1, sc[0], sc[1], sc[2], sc[3]);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
glScissorIndexedv(2, sc);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
sc[2] = 5;
sc[3] = -12345;
}
return pass;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL41_nglScissorIndexedv(JNIEnv *env, jclass clazz, jint index, jlong v, jlong function_pointer) {
const GLint *v_address = (const GLint *)(intptr_t)v;
glScissorIndexedvPROC glScissorIndexedv = (glScissorIndexedvPROC)((intptr_t)function_pointer);
glScissorIndexedv(index, v_address);
}
