--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLContext.h Fri Jun 21 12:08:37 2019 +0530
@@ -0,0 +1,240 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef MTLContext_h_Included
+#define MTLContext_h_Included
+
+#include <simd/simd.h>
+
+#include "sun_java2d_pipe_BufferedContext.h"
+#include "sun_java2d_metal_MTLContext.h"
+#include "sun_java2d_metal_MTLContext_MTLContextCaps.h"
+
+#import <Metal/Metal.h>
+#include "j2d_md.h"
+#include "MTLSurfaceDataBase.h"
+#include "MTLTexturePool.h"
+#include "MTLPipelineStatesStorage.h"
+
+/**
+ * The MTLBlendRule structure encapsulates the two enumerated values that
+ * comprise a given Porter-Duff blending (compositing) rule. For example,
+ * the "SrcOver" rule can be represented by:
+ * rule.src = GL_ONE;
+ * rule.dst = GL_ONE_MINUS_SRC_ALPHA;
+ *
+ * GLenum src;
+ * The constant representing the source factor in this Porter-Duff rule.
+ *
+ * GLenum dst;
+ * The constant representing the destination factor in this Porter-Duff rule.
+ */
+typedef struct {
+ jint src;
+ jint dst;
+} MTLBlendRule;
+
+/**
+ * The MTLContext class contains cached state relevant to the native
+ * MTL context stored within the native ctxInfo field. Each Java-level
+ * MTLContext object is associated with a native-level MTLContext class.
+ * */
+@interface MTLContext : NSObject
+
+@property jint compState;
+@property jfloat extraAlpha;
+@property jint alphaCompositeRule;
+@property jint xorPixel;
+@property jint pixel;
+
+@property jdouble p0;
+@property jdouble p1;
+@property jdouble p3;
+@property jboolean cyclic;
+@property jint pixel1;
+@property jint pixel2;
+
+@property jubyte r;
+@property jubyte g;
+@property jubyte b;
+@property jubyte a;
+@property jint paintState;
+@property jboolean useMask;
+@property jboolean useTransform;
+@property simd_float4x4 transform4x4;
+@property jint blitTextureID;
+@property jint textureFunction;
+@property jboolean vertexCacheEnabled;
+
+@property (readonly, strong) id<MTLDevice> device;
+@property (strong) id<MTLLibrary> library;
+@property (strong) id<MTLRenderPipelineState> pipelineState;
+@property (strong) id<MTLCommandQueue> commandQueue;
+@property (readonly,strong) id<MTLCommandBuffer> commandBuffer;
+@property (strong) id<MTLBuffer> vertexBuffer;
+@property jint color;
+@property MTLScissorRect clipRect;
+@property jboolean useClip;
+@property (strong)MTLPipelineStatesStorage* pipelineStateStorage;
+@property (strong)MTLTexturePool* texturePool;
+
+- (void)releaseCommandBuffer;
+/**
+ * Fetches the MTLContext associated with the given destination surface,
+ * makes the context current for those surfaces, updates the destination
+ * viewport, and then returns a pointer to the MTLContext.
+ */
++ (MTLContext*) setSurfacesEnv:(JNIEnv*)env src:(jlong)pSrc dst:(jlong)pDst;
+
+- (id)initWithDevice:(id<MTLDevice>)d shadersLib:(NSString*)shadersLib;
+
+/**
+ * Resets the current clip state (disables both scissor and depth tests).
+ */
+- (void)resetClip;
+
+/**
+ * Sets the Metal scissor bounds to the provided rectangular clip bounds.
+ */
+- (void)setClipRectX1:(jint)x1 Y1:(jint)y1 X2:(jint)x2 Y2:(jint)y2;
+
+/**
+ * Sets up a complex (shape) clip using the OpenGL depth buffer. This
+ * method prepares the depth buffer so that the clip Region spans can
+ * be "rendered" into it. The depth buffer is first cleared, then the
+ * depth func is setup so that when we render the clip spans,
+ * nothing is rendered into the color buffer, but for each pixel that would
+ * be rendered, a non-zero value is placed into that location in the depth
+ * buffer. With depth test enabled, pixels will only be rendered into the
+ * color buffer if the corresponding value at that (x,y) location in the
+ * depth buffer differs from the incoming depth value.
+ */
+- (void)beginShapeClip;
+
+/**
+ * Finishes setting up the shape clip by resetting the depth func
+ * so that future rendering operations will once again be written into the
+ * color buffer (while respecting the clip set up in the depth buffer).
+ */
+- (void)endShapeClip;
+
+/**
+ * Initializes the OpenGL state responsible for applying extra alpha. This
+ * step is only necessary for any operation that uses glDrawPixels() or
+ * glCopyPixels() with a non-1.0f extra alpha value. Since the source is
+ * always premultiplied, we apply the extra alpha value to both alpha and
+ * color components using GL_*_SCALE.
+ */
+- (void)setExtraAlpha:(jfloat)ea;
+
+/**
+ * Resets all OpenGL compositing state (disables blending and logic
+ * operations).
+ */
+- (void)resetComposite;
+
+/**
+ * Initializes the OpenGL blending state. XOR mode is disabled and the
+ * appropriate blend functions are setup based on the AlphaComposite rule
+ * constant.
+ */
+- (void)setAlphaCompositeRule:(jint)rule extraAlpha:(jfloat)extraAlpha
+ flags:(jint)flags;
+
+/**
+ * Initializes the OpenGL logic op state to XOR mode. Blending is disabled
+ * before enabling logic op mode. The XOR pixel value will be applied
+ * later in the MTLContext_SetColor() method.
+ */
+- (void)setXorComposite:(jint)xorPixel;
+- (jboolean)isBlendingDisabled;
+
+/**
+ * Resets the OpenGL transform state back to the identity matrix.
+ */
+- (void)resetTransform;
+
+/**
+ * Initializes the OpenGL transform state by setting the modelview transform
+ * using the given matrix parameters.
+ *
+ * REMIND: it may be worthwhile to add serial id to AffineTransform, so we
+ * could do a quick check to see if the xform has changed since
+ * last time... a simple object compare won't suffice...
+ */
+- (void)setTransformM00:(jdouble) m00 M10:(jdouble) m10
+ M01:(jdouble) m01 M11:(jdouble) m11
+ M02:(jdouble) m02 M12:(jdouble) m12;
+
+/**
+ * Initializes a small texture tile for use with tiled blit operations (see
+ * MTLBlitLoops.c and MTLMaskBlit.c for usage examples). The texture ID for
+ * the tile is stored in the given MTLContext. The tile is initially filled
+ * with garbage values, but the tile is updated as needed (via
+ * glTexSubImage2D()) with real RGBA values used in tiled blit situations.
+ * The internal format for the texture is GL_RGBA8, which should be sufficient
+ * for storing system memory surfaces of any known format (see PixelFormats
+ * for a list of compatible surface formats).
+ */
+- (jboolean)initBlitTileTexture;
+
+
+/**
+ * Creates a 2D texture of the given format and dimensions and returns the
+ * texture object identifier. This method is typically used to create a
+ * temporary texture for intermediate work, such as in the
+ * MTLContext_InitBlitTileTexture() method below.
+ */
+- (jint)createBlitTextureFormat:(jint)internalFormat pixelFormat:(jint)pixelFormat
+ width:(jint)width height:(jint)height;
+
+- (void)destroyContextResources;
+
+- (void)setColorR:(int)r G:(int)g B:(int)b A:(int)a;
+- (void)setColorInt:(int)pixel;
+
+- (id<MTLRenderCommandEncoder>)createSamplingEncoderForDest:(id<MTLTexture>)dest clearRed:(int)clearRed;
+- (id<MTLRenderCommandEncoder>)createSamplingEncoderForDest:(id<MTLTexture>)dest;
+- (id<MTLBlitCommandEncoder>)createBlitEncoder;
+// NOTE: debug parameners will be removed soon
+- (id<MTLRenderCommandEncoder>)createRenderEncoderForDest:(id<MTLTexture>)dest clearRed:(int) clearRed/*debug param*/;
+- (id<MTLRenderCommandEncoder>)createRenderEncoderForDest:(id<MTLTexture>)dest;
+- (void)setGradientPaintUseMask:(jboolean)useMask cyclic:(jboolean)cyclic p0:(jdouble) p0 p1:(jdouble) p1 p3:(jdouble)p3
+ pixel1:(jint)pixel1 pixel2:(jint) pixel2;
+- (void) setEncoderTransform:(id<MTLRenderCommandEncoder>) encoder dest:(id<MTLTexture>) dest;
+- (void)dealloc;
+@end
+
+/**
+ * See BufferedContext.java for more on these flags...
+ */
+#define MTLC_NO_CONTEXT_FLAGS \
+ sun_java2d_pipe_BufferedContext_NO_CONTEXT_FLAGS
+#define MTLC_SRC_IS_OPAQUE \
+ sun_java2d_pipe_BufferedContext_SRC_IS_OPAQUE
+#define MTLC_USE_MASK \
+ sun_java2d_pipe_BufferedContext_USE_MASK
+
+#endif /* MTLContext_h_Included */