1 /*
2 * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.java2d.metal;
27
28 import sun.java2d.pipe.BufferedContext;
29 import sun.java2d.pipe.RenderBuffer;
30 import sun.java2d.pipe.RenderQueue;
31 import sun.java2d.pipe.hw.ContextCapabilities;
32 import static sun.java2d.pipe.BufferedOpCodes.*;
33 import static sun.java2d.pipe.hw.ContextCapabilities.*;
34
35 import java.lang.annotation.Native;
36
37 /**
38 * Note that the RenderQueue lock must be acquired before calling any of
39 * the methods in this class.
40 */
41 public class MetalContext extends BufferedContext {
42
43 private final MetalGraphicsConfig config;
44
45 MetalContext(RenderQueue rq, MetalGraphicsConfig config) {
46 super(rq);
47 this.config = config;
48 }
49
50 static void setScratchSurface(MetalGraphicsConfig gc) {
51 setScratchSurface(gc.getNativeConfigInfo());
52 }
53
54 /**
55 * Makes the given GraphicsConfig's context current to its associated
56 * "scratch surface". Each GraphicsConfig maintains a native context
57 * (GLXContext on Unix, HGLRC on Windows) as well as a native pbuffer
58 * known as the "scratch surface". By making the context current to the
59 * scratch surface, we are assured that we have a current context for
60 * the relevant GraphicsConfig, and can therefore perform operations
61 * depending on the capabilities of that GraphicsConfig. For example,
62 * if the GraphicsConfig supports the GL_ARB_texture_non_power_of_two
63 * extension, then we should be able to make a non-pow2 texture for this
64 * GraphicsConfig once we make the context current to the scratch surface.
65 *
66 * This method should be used for operations with an OpenGL texture
67 * as the destination surface (e.g. a sw->texture blit loop), or in those
68 * situations where we may not otherwise have a current context (e.g.
69 * when disposing a texture-based surface).
70 */
71 static void setScratchSurface(long pConfigInfo) {
72 // assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread();
73
74 // invalidate the current context
75 currentContext = null;
76
77 // set the scratch context
78 MetalRenderQueue rq = MetalRenderQueue.getInstance();
79 RenderBuffer buf = rq.getBuffer();
80 rq.ensureCapacityAndAlignment(12, 4);
81 buf.putInt(SET_SCRATCH_SURFACE);
82 buf.putLong(pConfigInfo);
83 }
84
85 /**
86 * Invalidates the currentContext field to ensure that we properly
87 * revalidate the OGLContext (make it current, etc.) next time through
88 * the validate() method. This is typically invoked from methods
89 * that affect the current context state (e.g. disposing a context or
90 * surface).
91 */
92 static void invalidateCurrentContext() {
93 // assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread();
94
95 // invalidate the current Java-level context so that we
96 // revalidate everything the next time around
97 if (currentContext != null) {
98 currentContext.invalidateContext();
99 currentContext = null;
100 }
101
102 // invalidate the context reference at the native level, and
103 // then flush the queue so that we have no pending operations
104 // dependent on the current context
105 MetalRenderQueue rq = MetalRenderQueue.getInstance();
106 rq.ensureCapacity(4);
107 rq.getBuffer().putInt(INVALIDATE_CONTEXT);
108 rq.flushNow();
109 }
110
111 public RenderQueue getRenderQueue() {
112 return MetalRenderQueue.getInstance();
113 }
114
115 /**
116 * Returns a string representing adapter id (vendor, renderer, version).
117 * Must be called on the rendering thread.
118 *
119 * @return an id string for the adapter
120 */
121 //static final native String getOGLIdString();
122
123 @Override
124 public void saveState() {
125 // assert rq.lock.isHeldByCurrentThread();
126
127 // reset all attributes of this and current contexts
128 invalidateContext();
129 invalidateCurrentContext();
130
131 setScratchSurface(config);
132
133 // save the state on the native level
134 rq.ensureCapacity(4);
135 buf.putInt(SAVE_STATE);
136 rq.flushNow();
137 }
138
139 @Override
140 public void restoreState() {
141 // assert rq.lock.isHeldByCurrentThread();
142
143 // reset all attributes of this and current contexts
144 invalidateContext();
145 invalidateCurrentContext();
146
147 setScratchSurface(config);
148
149 // restore the state on the native level
150 rq.ensureCapacity(4);
151 buf.putInt(RESTORE_STATE);
152 rq.flushNow();
153 }
154
155 //static class OGLContextCaps extends ContextCapabilities {
156 /**
157 * Indicates the presence of the GL_EXT_framebuffer_object extension.
158 * This cap will only be set if the fbobject system property has been
159 * enabled and we are able to create an FBO with depth buffer.
160 */
161 // @Native
162 // static final int CAPS_EXT_FBOBJECT =
163 // (CAPS_RT_TEXTURE_ALPHA | CAPS_RT_TEXTURE_OPAQUE);
164 /** Indicates that the context is doublebuffered. */
165 // @Native
166 // static final int CAPS_DOUBLEBUFFERED = (FIRST_PRIVATE_CAP << 0);
167 /**
168 * Indicates the presence of the GL_ARB_fragment_shader extension.
169 * This cap will only be set if the lcdshader system property has been
170 * enabled and the hardware supports the minimum number of texture units
171 */
172 // @Native
173 // static final int CAPS_EXT_LCD_SHADER = (FIRST_PRIVATE_CAP << 1);
174 /**
175 * Indicates the presence of the GL_ARB_fragment_shader extension.
176 * This cap will only be set if the biopshader system property has been
177 * enabled and the hardware meets our minimum requirements.
178 */
179 // @Native
180 // static final int CAPS_EXT_BIOP_SHADER = (FIRST_PRIVATE_CAP << 2);
181 /**
182 * Indicates the presence of the GL_ARB_fragment_shader extension.
183 * This cap will only be set if the gradshader system property has been
184 * enabled and the hardware meets our minimum requirements.
185 */
186 // @Native
187 // static final int CAPS_EXT_GRAD_SHADER = (FIRST_PRIVATE_CAP << 3);
188 /** Indicates the presence of the GL_ARB_texture_rectangle extension. */
189 // @Native
190 // static final int CAPS_EXT_TEXRECT = (FIRST_PRIVATE_CAP << 4);
191 /** Indicates the presence of the GL_NV_texture_barrier extension. */
192 // @Native
193 // static final int CAPS_EXT_TEXBARRIER = (FIRST_PRIVATE_CAP << 5);
194
195
196 /* OGLContextCaps(int caps, String adapterId) {
197 super(caps, adapterId);
198 }
199
200 @Override
201 public String toString() {
202 StringBuilder sb = new StringBuilder(super.toString());
203 if ((caps & CAPS_EXT_FBOBJECT) != 0) {
204 sb.append("CAPS_EXT_FBOBJECT|");
205 }
206 if ((caps & CAPS_DOUBLEBUFFERED) != 0) {
207 sb.append("CAPS_DOUBLEBUFFERED|");
208 }
209 if ((caps & CAPS_EXT_LCD_SHADER) != 0) {
210 sb.append("CAPS_EXT_LCD_SHADER|");
211 }
212 if ((caps & CAPS_EXT_BIOP_SHADER) != 0) {
213 sb.append("CAPS_BIOP_SHADER|");
214 }
215 if ((caps & CAPS_EXT_GRAD_SHADER) != 0) {
216 sb.append("CAPS_EXT_GRAD_SHADER|");
217 }
218 if ((caps & CAPS_EXT_TEXRECT) != 0) {
219 sb.append("CAPS_EXT_TEXRECT|");
220 }
221 if ((caps & CAPS_EXT_TEXBARRIER) != 0) {
222 sb.append("CAPS_EXT_TEXBARRIER|");
223 }
224 return sb.toString();
225 }
226 }*/
227 }