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/*
* Copyright LWJGL. All rights reserved.
* License terms: https://www.lwjgl.org/license
* MACHINE GENERATED FILE, DO NOT EDIT
*/
package org.lwjgl.opengles;
import javax.annotation.*;
import java.nio.*;
import org.lwjgl.system.*;
import static org.lwjgl.system.Checks.*;
import static org.lwjgl.system.JNI.*;
import static org.lwjgl.system.MemoryUtil.*;
/**
* Native bindings to the EXT_window_rectangles extension.
*
* This extension provides additional orthogonally aligned "window rectangles" specified in window-space coordinates that restrict rasterization of all
* primitive types (geometry, images, paths) and framebuffer clears.
*
* When rendering to the framebuffer of an on-screen window, these window rectangles are ignored so these window rectangles apply to rendering to non-zero
* framebuffer objects only.
*
* From zero to an implementation-dependent limit (specified by {@link #GL_MAX_WINDOW_RECTANGLES_EXT MAX_WINDOW_RECTANGLES_EXT}) number of window rectangles can be operational at once. When
* one or more window rectangles are active, rasterized fragments can either survive if the fragment is within any of the operational window rectangles
* ({@link #GL_INCLUSIVE_EXT INCLUSIVE_EXT} mode) or be rejected if the fragment is within any of the operational window rectangles ({@link #GL_EXCLUSIVE_EXT EXCLUSIVE_EXT} mode).
*
* These window rectangles operate orthogonally to the existing scissor test functionality.
*
* This extension has specification language for both OpenGL and ES so {@code EXT_window_rectangles} can be implemented and advertised for either or both
* API contexts.
*
* Requires {@link GLES30 GLES30} or {@link EXTMultiviewDrawBuffers EXT_multiview_draw_buffers}.
*/
public class EXTWindowRectangles {
/** Accepted by the {@code mode} parameter of {@link #glWindowRectanglesEXT WindowRectanglesEXT}. */
public static final int
GL_INCLUSIVE_EXT = 0x8F10,
GL_EXCLUSIVE_EXT = 0x8F11;
/**
* Accepted by the {@code pname} parameter of GetIntegeri_v, GetInteger64i_v, GetBooleani_v, GetFloati_v, GetDoublei_v, GetIntegerIndexedvEXT,
* GetFloatIndexedvEXT, GetDoubleIndexedvEXT, GetBooleanIndexedvEXT, and GetIntegeri_vEXT.
*/
public static final int GL_WINDOW_RECTANGLE_EXT = 0x8F12;
/** Accepted by the {@code pname} parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev. */
public static final int
GL_WINDOW_RECTANGLE_MODE_EXT = 0x8F13,
GL_MAX_WINDOW_RECTANGLES_EXT = 0x8F14,
GL_NUM_WINDOW_RECTANGLES_EXT = 0x8F15;
static { GLES.initialize(); }
protected EXTWindowRectangles() {
throw new UnsupportedOperationException();
}
static boolean isAvailable(GLESCapabilities caps) {
return checkFunctions(
caps.glWindowRectanglesEXT
);
}
// --- [ glWindowRectanglesEXT ] ---
/**
* Unsafe version of: {@link #glWindowRectanglesEXT WindowRectanglesEXT}
*
* @param count the number of active window rectangles. Must be between zero and the value of {@link #GL_MAX_WINDOW_RECTANGLES_EXT MAX_WINDOW_RECTANGLES_EXT}.
*/
public static native void nglWindowRectanglesEXT(int mode, int count, long box);
/**
* Sets the active window rectangles.
*
* When the {@code WindowRectanglesEXT} command is processed without error, the ith window rectangle box is set to the corresponding four
* parameters for values of {@code i} less then {@code n}. For values of {@code i} greater than {@code n}, each window rectangle box is set to (0,0,0,0).
*
* Each four elements corresponds to the ith window rectangle indicating a box of pixels specified with window-space coordinates. Each window
* rectangle box {@code i} has a lower-left origin at {@code (x_i,y_i)} and upper-right corner at {@code (x_i+w_i,y_i+h_i)}.
*
* The {@link GLES20#GL_INVALID_VALUE INVALID_VALUE} error is generated if any element {@code w_i} or {@code h_i}, corresponding to each box's respective width and height, is negative.
*
* Each rasterized or cleared fragment with a window-space position {@code (xw,yw)} is within the ith window rectangle box when both of these
* equations are satisfied for all {@code i} less than {@code n}:
*
*
* x_i <= xw < x_i+w_i
* y_i <= yw < y_i+h_iWhen the window rectangles mode is {@link #GL_INCLUSIVE_EXT INCLUSIVE_EXT} mode and the bound framebuffer object is non-zero, a fragment passes the window rectangles test if
* the fragment's window-space position is within at least one of the current {@code n} active window rectangles; otherwise the window rectangles test
* fails and the fragment is discarded.
*
* When the window rectangles mode is {@link #GL_EXCLUSIVE_EXT EXCLUSIVE_EXT} mode and the bound framebuffer object is non-zero, a fragment fails the window rectangles test and is
* discarded if the fragment's window-space position is within at least one of the current {@code n} active window rectangles; otherwise the window
* rectangles test passes and the fragment passes the window rectangles test.
*
* When the bound framebuffer object is zero, the window rectangles test always passes.
*
* @param mode the rectangle mode. One of:
{@link #GL_INCLUSIVE_EXT INCLUSIVE_EXT} {@link #GL_EXCLUSIVE_EXT EXCLUSIVE_EXT}
* @param box an array of {@code 4*count} window rectangle coordinates
*/
public static void glWindowRectanglesEXT(@NativeType("GLenum") int mode, @Nullable @NativeType("const GLint *") IntBuffer box) {
nglWindowRectanglesEXT(mode, remainingSafe(box) >> 2, memAddressSafe(box));
}
/** Array version of: {@link #glWindowRectanglesEXT WindowRectanglesEXT} */
public static void glWindowRectanglesEXT(@NativeType("GLenum") int mode, @Nullable @NativeType("const GLint *") int[] box) {
long __functionAddress = GLES.getICD().glWindowRectanglesEXT;
if (CHECKS) {
check(__functionAddress);
}
callPV(__functionAddress, mode, lengthSafe(box) >> 2, box);
}
}