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/*
* Copyright (C) 2011, 2012, Sony Ericsson Mobile Communications AB
* Copyright (C) 2012, Sony Mobile Communications AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Sony Ericsson Mobile Communications AB nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SONY ERICSSON MOBILE COMMUNICATIONS AB BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef GraphicsContext3DInternal_h
#define GraphicsContext3D3DInternal_h
#include "ANGLEWebKitBridge.h"
#include "CanvasRenderingContext.h"
#include "Extensions3DAndroid.h"
#include "GraphicsContext3D.h"
#include "HTMLCanvasElement.h"
#include "SkRect.h"
#include "Threading.h"
#include "Timer.h"
#include "TransformationMatrix.h"
#include "WebGLLayer.h"
#include <wtf/Deque.h>
#include <wtf/RefPtr.h>
#include <EGL/egl.h>
#include <GLES2/gl2.h>
#include <ui/GraphicBuffer.h>
// This can be increased to 3, for example, if that has a positive impact on performance.
#define NUM_BUFFERS 2
#include <cutils/properties.h>
#include <cutils/log.h>
#define LOGWEBGL(...) (GraphicsContext3DInternal::s_loggingEnabled ? \
(void)android_printLog(ANDROID_LOG_DEBUG, "WebGL", __VA_ARGS__) : (void)0)
using namespace android;
namespace WebCore {
#define CLAMP(x) GraphicsContext3DInternal::clampValue(x)
typedef enum {
THREAD_STATE_STOPPED,
THREAD_STATE_RUN,
THREAD_STATE_RESTART,
THREAD_STATE_STOP
} thread_state_t;
class WebGLFPSTimer;
class GraphicsContext3DProxy;
class FBO;
class GraphicsContext3DInternal : public RefCounted<GraphicsContext3DInternal> {
public:
GraphicsContext3DInternal(HTMLCanvasElement* canvas, GraphicsContext3D::Attributes attrs,
HostWindow* hostWindow);
~GraphicsContext3DInternal();
bool isValid() { return m_contextId > 0; }
PlatformLayer* platformLayer() const;
void makeContextCurrent();
GraphicsContext3D::Attributes getContextAttributes();
void reshape(int width, int height);
unsigned long getError();
void synthesizeGLError(unsigned long error);
void recreateSurface();
void releaseSurface();
void markContextChanged();
void markLayerComposited() { m_layerComposited = true; }
bool layerComposited() const { return m_layerComposited; }
void updateFrontBuffer();
bool lockFrontBuffer(EGLImageKHR& image, SkRect& rect);
void releaseFrontBuffer();
void paintRenderingResultsToCanvas(CanvasRenderingContext* context);
PassRefPtr<ImageData> paintRenderingResultsToImageData();
bool paintCompositedResultsToCanvas(CanvasRenderingContext* context);
// Shader handling, required since we validate shader source with ANGLE
void compileShader(Platform3DObject shader);
String getShaderInfoLog(Platform3DObject shader);
String getShaderSource(Platform3DObject shader);
void shaderSource(Platform3DObject shader, const String& string);
void viewport(long x, long y, unsigned long width, unsigned long height);
int width() { return m_width; }
int height() { return m_height; }
Extensions3D* getExtensions() { return m_extensions.get(); }
void bindFramebuffer(GC3Denum target, Platform3DObject buffer);
static GLclampf clampValue(GLclampf x) {
GLclampf tmp = x;
if (tmp < 0.0f)
tmp = 0.0f;
else if (tmp > 1.0f)
tmp = 1.0f;
return tmp;
}
static GLclampf clampValue(double d) {
GLclampf tmp = (GLclampf)d;
if (tmp < 0.0f)
tmp = 0.0f;
else if (tmp > 1.0f)
tmp = 1.0f;
return tmp;
}
static EGLint checkEGLError(const char* s);
static GLint checkGLError(const char* s);
static void enableLogging();
static bool s_loggingEnabled;
private:
bool initEGL();
bool createContext(bool createEGLContext);
void deleteContext(bool deleteEGLContext);
RefPtr<GraphicsContext3DProxy> m_proxy;
WebGLLayer *m_compositingLayer;
HTMLCanvasElement* m_canvas;
GraphicsContext3D::Attributes m_attrs;
bool m_layerComposited;
bool m_canvasDirty;
int m_width;
int m_height;
int m_maxwidth;
int m_maxheight;
EGLDisplay m_dpy;
EGLConfig m_config;
EGLSurface m_surface;
EGLContext m_context;
// Routines for FBOs
FBO* m_fbo[NUM_BUFFERS];
GLuint m_boundFBO;
FBO* m_currentFBO;
FBO* m_frontFBO;
Deque<FBO*> m_freeBuffers;
Deque<FBO*> m_queuedBuffers;
Deque<FBO*> m_preparedBuffers;
WTF::Mutex m_fboMutex;
WTF::ThreadCondition m_fboCondition;
void startSyncThread();
void stopSyncThread();
static void* syncThreadStart(void* ctx);
void runSyncThread();
ThreadIdentifier m_syncThread;
thread_state_t m_threadState;
WTF::Mutex m_threadMutex;
WTF::ThreadCondition m_threadCondition;
void syncTimerFired(Timer<GraphicsContext3DInternal>*);
FBO* dequeueBuffer();
void swapBuffers();
Timer<GraphicsContext3DInternal> m_syncTimer;
bool m_syncRequested;
OwnPtr<WebGLFPSTimer> m_webGLFPSTimer;
typedef struct {
String source;
String log;
bool isValid;
} ShaderSourceEntry;
HashMap<Platform3DObject, ShaderSourceEntry> m_shaderSourceMap;
ANGLEWebKitBridge m_compiler;
// Errors raised by synthesizeGLError().
ListHashSet<unsigned long> m_syntheticErrors;
struct {
GLint x, y;
GLsizei width, height;
} m_savedViewport;
OwnPtr<Extensions3DAndroid> m_extensions;
int m_contextId;
// Java method used for invalidating the canvas area
jobject m_webView;
jmethodID m_postInvalidate;
};
} // namespace WebCore
#endif // GraphicsContext3DInternal_h
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