GLfloat getFloat(const GLenum pname, const GLuint index)
{
GLfloat value;
glGetFloati_v(pname, index, &value);
return value;
}
static int GetFloat4Index(lua_State *L, GLenum pname)
{
GLfloat data[4];
GLuint index;
index = luaL_checkinteger(L, 2);
glGetFloati_v(pname, index, data);
CheckError(L);
lua_pushnumber(L, data[0]);
lua_pushnumber(L, data[1]);
lua_pushnumber(L, data[2]);
lua_pushnumber(L, data[3]);
return 4;
}
static int GetFloat4OptIndex(lua_State *L, GLenum pname) /* index is optional */
{
GLfloat data[4];
GLuint index;
if(!lua_isnoneornil(L, 2))
{
index = luaL_checkinteger(L, 2);
glGetFloati_v(pname, index, data);
}
else
glGetFloatv(pname, data);
CheckError(L);
lua_pushnumber(L, data[0]);
lua_pushnumber(L, data[1]);
lua_pushnumber(L, data[2]);
lua_pushnumber(L, data[3]);
return 4;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL41_nglGetFloati_v(JNIEnv *env, jclass clazz, jint target, jint index, jlong data, jlong function_pointer) {
GLfloat *data_address = (GLfloat *)(intptr_t)data;
glGetFloati_vPROC glGetFloati_v = (glGetFloati_vPROC)((intptr_t)function_pointer);
glGetFloati_v(target, index, data_address);
}
PIGLIT_GL_TEST_CONFIG_END
/**
* Test clamping for viewport x,y, width, height. They should be clamped
* to VIEWPORT_BOUNDS_RANGE and MAX_VIEWPORT_DIMS. INVALID_VALUE for
* negative w,h. Test default values of x,y,w,h.
* OpenGL 4.3 Core section 13.6.1 ref:
* "The location of the viewport’s bottom-left corner, given by (x, y),
* are clamped to be within the implementation-dependent viewport bounds
* range. The viewport bounds range [min, max] tuple may be determined by
* calling GetFloatv with the symbolic constant VIEWPORT_BOUNDS_RANGE (see
* section 22)."
*
* "Viewport width and height are clamped to implementation-dependent
* maximums when specified. The maximum width and height may be found by
* calling GetFloatv with the symbolic constant MAX_VIEWPORT_DIMS."
*
* "An INVALID_VALUE error is generated if either w or h is negative."
*
* "In the initial state, w and h for each viewport are set to the width
* and height, respectively, of the window into which the GL is to do its
* rendering. If the default framebuffer is bound but no default framebuffer
* is associated with the GL context (see chapter 9), then w and h are
* initially set to zero. ox, oy , n, and f are set to w/2 , h/2, 0.0, and
* 1.0, respectively."
*/
static bool
viewport_bounds(GLint maxVP)
{
GLfloat maxDims[2];
GLfloat range[2];
GLfloat vp[4], vpGet[4];
bool pass = true;
int i;
/* intial values for x,y,w,h */
for (i = 0; i < maxVP; i++) {
glGetFloati_v(GL_VIEWPORT, i, vp);
if (vp[0] != 0.0 || vp[1] != 0.0 ||
vp[2] != (GLfloat) piglit_width ||
vp[3] != (GLfloat) piglit_height) {
printf("viewport default value wrong for idx %d\n", i);
pass = false;
}
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* test clamping of viewport values */
glGetFloatv(GL_MAX_VIEWPORT_DIMS, maxDims);
glGetFloatv(GL_VIEWPORT_BOUNDS_RANGE, range);
vp[0] = range[0] - 2.0;
vp[1] = range[1] + 2.0;
vp[2] = maxDims[0] + 1.0;
vp[3] = maxDims[1] + 1.0;
glViewportArrayv(0, 1, vp);
glGetFloati_v(GL_VIEWPORT, 0, vpGet);
if (vpGet[0] != range[0] || vpGet[1] != range[1] ||
vpGet[2] != maxDims[0] || vpGet[3] != maxDims[1]) {
printf("viewport clamping failed glViewportArrayv\n");
pass = false;
}
glViewportIndexedf(1, vp[0], vp[1], vp[2], vp[3]);
glGetFloati_v(GL_VIEWPORT, 1, vpGet);
if (vpGet[0] != range[0] || vpGet[1] != range[1] ||
vpGet[2] != maxDims[0] || vpGet[3] != maxDims[1]) {
printf("viewport clamping failed glViewportIndexedf\n");
pass = false;
}
glViewportIndexedfv(2, vp);
glGetFloati_v(GL_VIEWPORT, 2, vpGet);
if (vpGet[0] != range[0] || vpGet[1] != range[1] ||
vpGet[2] != maxDims[0] || vpGet[3] != maxDims[1]) {
printf("viewport clamping failed glViewportIndexedfv\n");
pass = false;
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* negative width, height gives gl error */
vp[2] = -10.3;
vp[3] = 0.0;
for (i = 0; i < 2; i++) {
glViewportArrayv(0, 1, vp);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
glViewportIndexedf(1, vp[0], vp[1], vp[2], vp[3]);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
glViewportIndexedfv(2, vp);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
vp[2] = 5.0;
vp[3] = -12345.7;
}
return pass;
}
bool
draw_grid(const struct grid_info grid, GLuint prog)
{
static GLuint lprog;
if (lprog != prog) {
glUseProgram(prog);
lprog = prog;
}
if (grid.stages & GL_COMPUTE_SHADER_BIT) {
set_uniform_int(prog, "ret_img", 7);
glDispatchCompute(1, grid.size.y, 1);
} else if (grid.stages & (GL_TESS_CONTROL_SHADER_BIT |
GL_TESS_EVALUATION_SHADER_BIT)) {
static struct image_extent size;
static GLuint vao, vbo;
if (size.x != grid.size.x || size.y != grid.size.y) {
size = grid.size;
if (!generate_grid_arrays(
&vao, &vbo,
1.0 / size.x - 1.0, 1.0 / size.y - 1.0,
2.0 / size.x, 2.0 / size.y,
size.x, size.y))
return false;
}
glBindVertexArray(vao);
glPatchParameteri(GL_PATCH_VERTICES, 4);
glDrawArrays(GL_PATCHES, 0, product(size));
} else if (grid.stages & (GL_VERTEX_SHADER_BIT |
GL_GEOMETRY_SHADER_BIT)) {
static struct image_extent size;
static GLuint vao, vbo;
if (size.x != grid.size.x || size.y != grid.size.y) {
size = grid.size;
if (!generate_grid_arrays(
&vao, &vbo,
1.0 / size.x - 1.0, 1.0 / size.y - 1.0,
2.0 / size.x, 2.0 / size.y,
size.x, size.y))
return false;
}
glBindVertexArray(vao);
glDrawArrays(GL_POINTS, 0, product(size));
} else {
static struct image_extent size;
static GLuint vao, vbo;
if (size.x != grid.size.x || size.y != grid.size.y) {
float vp[4];
glGetFloati_v(GL_VIEWPORT, 0, vp);
size = grid.size;
if (!generate_grid_arrays(
&vao, &vbo, -1.0, -1.0,
2.0 * size.x / vp[2], 2.0 * size.y / vp[3],
2, 2))
return false;
}
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
return piglit_check_gl_error(GL_NO_ERROR);
}