| /* |
| * Copyright (C) 2009 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS 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 WebGLRenderingContext_h |
| #define WebGLRenderingContext_h |
| |
| #include "CanvasRenderingContext.h" |
| #include "ExceptionCode.h" |
| #include "Float32Array.h" |
| #include "GraphicsContext3D.h" |
| #include "Int32Array.h" |
| #include "PlatformString.h" |
| #include "Timer.h" |
| #include "Uint8Array.h" |
| #include "WebGLGetInfo.h" |
| |
| #include <wtf/OwnArrayPtr.h> |
| |
| namespace WebCore { |
| |
| class WebGLActiveInfo; |
| class WebGLBuffer; |
| class WebGLContextAttributes; |
| class WebGLExtension; |
| class WebGLFramebuffer; |
| class WebGLObject; |
| class WebGLProgram; |
| class WebGLRenderbuffer; |
| class WebGLShader; |
| class WebGLTexture; |
| class WebGLUniformLocation; |
| class WebKitLoseContext; |
| class HTMLImageElement; |
| class HTMLVideoElement; |
| class ImageBuffer; |
| class ImageData; |
| class IntSize; |
| class OESStandardDerivatives; |
| class OESTextureFloat; |
| class OESVertexArrayObject; |
| class WebGLVertexArrayObjectOES; |
| |
| class WebGLRenderingContext : public CanvasRenderingContext { |
| public: |
| static PassOwnPtr<WebGLRenderingContext> create(HTMLCanvasElement*, WebGLContextAttributes*); |
| virtual ~WebGLRenderingContext(); |
| |
| virtual bool is3d() const { return true; } |
| virtual bool isAccelerated() const { return true; } |
| virtual bool paintsIntoCanvasBuffer() const; |
| |
| void activeTexture(GC3Denum texture, ExceptionCode&); |
| void attachShader(WebGLProgram*, WebGLShader*, ExceptionCode&); |
| void bindAttribLocation(WebGLProgram*, GC3Duint index, const String& name, ExceptionCode&); |
| void bindBuffer(GC3Denum target, WebGLBuffer*, ExceptionCode&); |
| void bindFramebuffer(GC3Denum target, WebGLFramebuffer*, ExceptionCode&); |
| void bindRenderbuffer(GC3Denum target, WebGLRenderbuffer*, ExceptionCode&); |
| void bindTexture(GC3Denum target, WebGLTexture*, ExceptionCode&); |
| void blendColor(GC3Dfloat red, GC3Dfloat green, GC3Dfloat blue, GC3Dfloat alpha); |
| void blendEquation(GC3Denum mode); |
| void blendEquationSeparate(GC3Denum modeRGB, GC3Denum modeAlpha); |
| void blendFunc(GC3Denum sfactor, GC3Denum dfactor); |
| void blendFuncSeparate(GC3Denum srcRGB, GC3Denum dstRGB, GC3Denum srcAlpha, GC3Denum dstAlpha); |
| |
| void bufferData(GC3Denum target, GC3Dsizeiptr size, GC3Denum usage, ExceptionCode&); |
| void bufferData(GC3Denum target, ArrayBuffer* data, GC3Denum usage, ExceptionCode&); |
| void bufferData(GC3Denum target, ArrayBufferView* data, GC3Denum usage, ExceptionCode&); |
| void bufferSubData(GC3Denum target, GC3Dintptr offset, ArrayBuffer* data, ExceptionCode&); |
| void bufferSubData(GC3Denum target, GC3Dintptr offset, ArrayBufferView* data, ExceptionCode&); |
| |
| GC3Denum checkFramebufferStatus(GC3Denum target); |
| void clear(GC3Dbitfield mask); |
| void clearColor(GC3Dfloat red, GC3Dfloat green, GC3Dfloat blue, GC3Dfloat alpha); |
| void clearDepth(GC3Dfloat); |
| void clearStencil(GC3Dint); |
| void colorMask(GC3Dboolean red, GC3Dboolean green, GC3Dboolean blue, GC3Dboolean alpha); |
| void compileShader(WebGLShader*, ExceptionCode&); |
| |
| // void compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Dsizei imageSize, const void* data); |
| // void compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dsizei width, GC3Dsizei GC3Dsizei height, GC3Denum format, GC3Dsizei imageSize, const void* data); |
| |
| void copyTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Dint border); |
| void copyTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| |
| PassRefPtr<WebGLBuffer> createBuffer(); |
| PassRefPtr<WebGLFramebuffer> createFramebuffer(); |
| PassRefPtr<WebGLProgram> createProgram(); |
| PassRefPtr<WebGLRenderbuffer> createRenderbuffer(); |
| PassRefPtr<WebGLShader> createShader(GC3Denum type, ExceptionCode&); |
| PassRefPtr<WebGLTexture> createTexture(); |
| |
| void cullFace(GC3Denum mode); |
| |
| void deleteBuffer(WebGLBuffer*); |
| void deleteFramebuffer(WebGLFramebuffer*); |
| void deleteProgram(WebGLProgram*); |
| void deleteRenderbuffer(WebGLRenderbuffer*); |
| void deleteShader(WebGLShader*); |
| void deleteTexture(WebGLTexture*); |
| |
| void depthFunc(GC3Denum); |
| void depthMask(GC3Dboolean); |
| void depthRange(GC3Dfloat zNear, GC3Dfloat zFar); |
| void detachShader(WebGLProgram*, WebGLShader*, ExceptionCode&); |
| void disable(GC3Denum cap); |
| void disableVertexAttribArray(GC3Duint index, ExceptionCode&); |
| void drawArrays(GC3Denum mode, GC3Dint first, GC3Dsizei count, ExceptionCode&); |
| void drawElements(GC3Denum mode, GC3Dsizei count, GC3Denum type, GC3Dintptr offset, ExceptionCode&); |
| |
| void enable(GC3Denum cap); |
| void enableVertexAttribArray(GC3Duint index, ExceptionCode&); |
| void finish(); |
| void flush(); |
| void framebufferRenderbuffer(GC3Denum target, GC3Denum attachment, GC3Denum renderbuffertarget, WebGLRenderbuffer*, ExceptionCode&); |
| void framebufferTexture2D(GC3Denum target, GC3Denum attachment, GC3Denum textarget, WebGLTexture*, GC3Dint level, ExceptionCode&); |
| void frontFace(GC3Denum mode); |
| void generateMipmap(GC3Denum target); |
| |
| PassRefPtr<WebGLActiveInfo> getActiveAttrib(WebGLProgram*, GC3Duint index, ExceptionCode&); |
| PassRefPtr<WebGLActiveInfo> getActiveUniform(WebGLProgram*, GC3Duint index, ExceptionCode&); |
| bool getAttachedShaders(WebGLProgram*, Vector<WebGLShader*>&, ExceptionCode&); |
| GC3Dint getAttribLocation(WebGLProgram*, const String& name); |
| WebGLGetInfo getBufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| PassRefPtr<WebGLContextAttributes> getContextAttributes(); |
| GC3Denum getError(); |
| WebGLExtension* getExtension(const String& name); |
| WebGLGetInfo getFramebufferAttachmentParameter(GC3Denum target, GC3Denum attachment, GC3Denum pname, ExceptionCode&); |
| WebGLGetInfo getParameter(GC3Denum pname, ExceptionCode&); |
| WebGLGetInfo getProgramParameter(WebGLProgram*, GC3Denum pname, ExceptionCode&); |
| String getProgramInfoLog(WebGLProgram*, ExceptionCode&); |
| WebGLGetInfo getRenderbufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| WebGLGetInfo getShaderParameter(WebGLShader*, GC3Denum pname, ExceptionCode&); |
| String getShaderInfoLog(WebGLShader*, ExceptionCode&); |
| |
| // TBD |
| // void glGetShaderPrecisionFormat (GC3Denum shadertype, GC3Denum precisiontype, GC3Dint* range, GC3Dint* precision); |
| |
| String getShaderSource(WebGLShader*, ExceptionCode&); |
| Vector<String> getSupportedExtensions(); |
| WebGLGetInfo getTexParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| WebGLGetInfo getUniform(WebGLProgram*, const WebGLUniformLocation*, ExceptionCode&); |
| PassRefPtr<WebGLUniformLocation> getUniformLocation(WebGLProgram*, const String&, ExceptionCode&); |
| WebGLGetInfo getVertexAttrib(GC3Duint index, GC3Denum pname, ExceptionCode&); |
| GC3Dsizeiptr getVertexAttribOffset(GC3Duint index, GC3Denum pname); |
| |
| void hint(GC3Denum target, GC3Denum mode); |
| GC3Dboolean isBuffer(WebGLBuffer*); |
| bool isContextLost(); |
| GC3Dboolean isEnabled(GC3Denum cap); |
| GC3Dboolean isFramebuffer(WebGLFramebuffer*); |
| GC3Dboolean isProgram(WebGLProgram*); |
| GC3Dboolean isRenderbuffer(WebGLRenderbuffer*); |
| GC3Dboolean isShader(WebGLShader*); |
| GC3Dboolean isTexture(WebGLTexture*); |
| |
| void lineWidth(GC3Dfloat); |
| void linkProgram(WebGLProgram*, ExceptionCode&); |
| void pixelStorei(GC3Denum pname, GC3Dint param); |
| void polygonOffset(GC3Dfloat factor, GC3Dfloat units); |
| void readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, ArrayBufferView* pixels, ExceptionCode&); |
| void releaseShaderCompiler(); |
| void renderbufferStorage(GC3Denum target, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height); |
| void sampleCoverage(GC3Dfloat value, GC3Dboolean invert); |
| void scissor(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| void shaderSource(WebGLShader*, const String&, ExceptionCode&); |
| void stencilFunc(GC3Denum func, GC3Dint ref, GC3Duint mask); |
| void stencilFuncSeparate(GC3Denum face, GC3Denum func, GC3Dint ref, GC3Duint mask); |
| void stencilMask(GC3Duint); |
| void stencilMaskSeparate(GC3Denum face, GC3Duint mask); |
| void stencilOp(GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| void stencilOpSeparate(GC3Denum face, GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| GC3Denum format, GC3Denum type, ArrayBufferView*, ExceptionCode&); |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, ImageData*, ExceptionCode&); |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLImageElement*, ExceptionCode&); |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLCanvasElement*, ExceptionCode&); |
| #if ENABLE(VIDEO) |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLVideoElement*, ExceptionCode&); |
| #endif |
| |
| void texParameterf(GC3Denum target, GC3Denum pname, GC3Dfloat param); |
| void texParameteri(GC3Denum target, GC3Denum pname, GC3Dint param); |
| |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Dsizei width, GC3Dsizei height, |
| GC3Denum format, GC3Denum type, ArrayBufferView*, ExceptionCode&); |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Denum format, GC3Denum type, ImageData*, ExceptionCode&); |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Denum format, GC3Denum type, HTMLImageElement*, ExceptionCode&); |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Denum format, GC3Denum type, HTMLCanvasElement*, ExceptionCode&); |
| #if ENABLE(VIDEO) |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Denum format, GC3Denum type, HTMLVideoElement*, ExceptionCode&); |
| #endif |
| |
| void uniform1f(const WebGLUniformLocation* location, GC3Dfloat x, ExceptionCode&); |
| void uniform1fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| void uniform1fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| void uniform1i(const WebGLUniformLocation* location, GC3Dint x, ExceptionCode&); |
| void uniform1iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| void uniform1iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| void uniform2f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, ExceptionCode&); |
| void uniform2fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| void uniform2fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| void uniform2i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, ExceptionCode&); |
| void uniform2iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| void uniform2iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| void uniform3f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, ExceptionCode&); |
| void uniform3fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| void uniform3fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| void uniform3i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, ExceptionCode&); |
| void uniform3iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| void uniform3iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| void uniform4f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w, ExceptionCode&); |
| void uniform4fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| void uniform4fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| void uniform4i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, GC3Dint w, ExceptionCode&); |
| void uniform4iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| void uniform4iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| void uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| void uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| void uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| void uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| void uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| void uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| |
| void useProgram(WebGLProgram*, ExceptionCode&); |
| void validateProgram(WebGLProgram*, ExceptionCode&); |
| |
| void vertexAttrib1f(GC3Duint index, GC3Dfloat x); |
| void vertexAttrib1fv(GC3Duint index, Float32Array* values); |
| void vertexAttrib1fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| void vertexAttrib2f(GC3Duint index, GC3Dfloat x, GC3Dfloat y); |
| void vertexAttrib2fv(GC3Duint index, Float32Array* values); |
| void vertexAttrib2fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| void vertexAttrib3f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z); |
| void vertexAttrib3fv(GC3Duint index, Float32Array* values); |
| void vertexAttrib3fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| void vertexAttrib4f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w); |
| void vertexAttrib4fv(GC3Duint index, Float32Array* values); |
| void vertexAttrib4fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| void vertexAttribPointer(GC3Duint index, GC3Dint size, GC3Denum type, GC3Dboolean normalized, |
| GC3Dsizei stride, GC3Dintptr offset, ExceptionCode&); |
| |
| void viewport(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| |
| void forceLostContext(); |
| void onLostContext(); |
| void restoreContext(); |
| |
| GraphicsContext3D* graphicsContext3D() const { return m_context.get(); } |
| #if USE(ACCELERATED_COMPOSITING) |
| virtual PlatformLayer* platformLayer() const { return m_context->platformLayer(); } |
| #endif |
| |
| void reshape(int width, int height); |
| |
| void markLayerComposited(); |
| virtual void paintRenderingResultsToCanvas(); |
| virtual PassRefPtr<ImageData> paintRenderingResultsToImageData(); |
| |
| void removeObject(WebGLObject*); |
| |
| unsigned getMaxVertexAttribs() const { return m_maxVertexAttribs; } |
| |
| // Helpers for JSC bindings. |
| int getNumberOfExtensions(); |
| WebGLExtension* getExtensionNumber(int i); |
| |
| private: |
| friend class WebGLObject; |
| friend class OESVertexArrayObject; |
| |
| WebGLRenderingContext(HTMLCanvasElement*, PassRefPtr<GraphicsContext3D>, GraphicsContext3D::Attributes); |
| void initializeNewContext(); |
| void setupFlags(); |
| |
| void addObject(WebGLObject*); |
| void detachAndRemoveAllObjects(); |
| WebGLTexture* findTexture(Platform3DObject); |
| WebGLRenderbuffer* findRenderbuffer(Platform3DObject); |
| WebGLBuffer* findBuffer(Platform3DObject); |
| WebGLShader* findShader(Platform3DObject); |
| |
| void markContextChanged(); |
| void cleanupAfterGraphicsCall(bool changed) |
| { |
| if (changed) |
| markContextChanged(); |
| } |
| |
| // Query whether it is built on top of compliant GLES2 implementation. |
| bool isGLES2Compliant() { return m_isGLES2Compliant; } |
| // Query if the GL implementation is NPOT strict. |
| bool isGLES2NPOTStrict() { return m_isGLES2NPOTStrict; } |
| // Query if the GL implementation generates errors on out-of-bounds buffer accesses. |
| bool isErrorGeneratedOnOutOfBoundsAccesses() { return m_isErrorGeneratedOnOutOfBoundsAccesses; } |
| // Query if the GL implementation initializes textures/renderbuffers to 0. |
| bool isResourceSafe() { return m_isResourceSafe; } |
| // Query if depth_stencil buffer is supported. |
| bool isDepthStencilSupported() { return m_isDepthStencilSupported; } |
| |
| // Helper to return the size in bytes of OpenGL data types |
| // like GL_FLOAT, GL_INT, etc. |
| unsigned int sizeInBytes(GC3Denum type); |
| |
| // Basic validation of count and offset against number of elements in element array buffer |
| bool validateElementArraySize(GC3Dsizei count, GC3Denum type, GC3Dintptr offset); |
| |
| // Conservative but quick index validation |
| bool validateIndexArrayConservative(GC3Denum type, int& numElementsRequired); |
| |
| // Precise but slow index validation -- only done if conservative checks fail |
| bool validateIndexArrayPrecise(GC3Dsizei count, GC3Denum type, GC3Dintptr offset, int& numElementsRequired); |
| // If numElements <= 0, we only check if each enabled vertex attribute is bound to a buffer. |
| bool validateRenderingState(int numElements); |
| |
| bool validateWebGLObject(WebGLObject*); |
| |
| #if ENABLE(VIDEO) |
| PassRefPtr<Image> videoFrameToImage(HTMLVideoElement*); |
| #endif |
| |
| RefPtr<GraphicsContext3D> m_context; |
| |
| class WebGLRenderingContextRestoreTimer : public TimerBase { |
| public: |
| WebGLRenderingContextRestoreTimer(WebGLRenderingContext* context) : m_context(context) { } |
| private: |
| virtual void fired(); |
| WebGLRenderingContext* m_context; |
| }; |
| |
| WebGLRenderingContextRestoreTimer m_restoreTimer; |
| |
| bool m_needsUpdate; |
| bool m_markedCanvasDirty; |
| HashSet<RefPtr<WebGLObject> > m_canvasObjects; |
| |
| // List of bound VBO's. Used to maintain info about sizes for ARRAY_BUFFER and stored values for ELEMENT_ARRAY_BUFFER |
| RefPtr<WebGLBuffer> m_boundArrayBuffer; |
| |
| RefPtr<WebGLVertexArrayObjectOES> m_defaultVertexArrayObject; |
| RefPtr<WebGLVertexArrayObjectOES> m_boundVertexArrayObject; |
| void setBoundVertexArrayObject(PassRefPtr<WebGLVertexArrayObjectOES> arrayObject) |
| { |
| if (arrayObject) |
| m_boundVertexArrayObject = arrayObject; |
| else |
| m_boundVertexArrayObject = m_defaultVertexArrayObject; |
| } |
| |
| class VertexAttribValue { |
| public: |
| VertexAttribValue() |
| { |
| initValue(); |
| } |
| |
| void initValue() |
| { |
| value[0] = 0.0f; |
| value[1] = 0.0f; |
| value[2] = 0.0f; |
| value[3] = 1.0f; |
| } |
| |
| GC3Dfloat value[4]; |
| }; |
| Vector<VertexAttribValue> m_vertexAttribValue; |
| unsigned m_maxVertexAttribs; |
| RefPtr<WebGLBuffer> m_vertexAttrib0Buffer; |
| long m_vertexAttrib0BufferSize; |
| GC3Dfloat m_vertexAttrib0BufferValue[4]; |
| bool m_forceAttrib0BufferRefill; |
| bool m_vertexAttrib0UsedBefore; |
| |
| RefPtr<WebGLProgram> m_currentProgram; |
| RefPtr<WebGLFramebuffer> m_framebufferBinding; |
| RefPtr<WebGLRenderbuffer> m_renderbufferBinding; |
| class TextureUnitState { |
| public: |
| RefPtr<WebGLTexture> m_texture2DBinding; |
| RefPtr<WebGLTexture> m_textureCubeMapBinding; |
| }; |
| Vector<TextureUnitState> m_textureUnits; |
| unsigned long m_activeTextureUnit; |
| |
| RefPtr<WebGLTexture> m_blackTexture2D; |
| RefPtr<WebGLTexture> m_blackTextureCubeMap; |
| |
| // Fixed-size cache of reusable image buffers for video texImage2D calls. |
| class LRUImageBufferCache { |
| public: |
| LRUImageBufferCache(int capacity); |
| // The pointer returned is owned by the image buffer map. |
| ImageBuffer* imageBuffer(const IntSize& size); |
| private: |
| void bubbleToFront(int idx); |
| OwnArrayPtr<OwnPtr<ImageBuffer> > m_buffers; |
| int m_capacity; |
| }; |
| LRUImageBufferCache m_videoCache; |
| |
| GC3Dint m_maxTextureSize; |
| GC3Dint m_maxCubeMapTextureSize; |
| GC3Dint m_maxTextureLevel; |
| GC3Dint m_maxCubeMapTextureLevel; |
| |
| GC3Dint m_packAlignment; |
| GC3Dint m_unpackAlignment; |
| bool m_unpackFlipY; |
| bool m_unpackPremultiplyAlpha; |
| GC3Denum m_unpackColorspaceConversion; |
| bool m_contextLost; |
| GraphicsContext3D::Attributes m_attributes; |
| |
| bool m_layerCleared; |
| GC3Dfloat m_clearColor[4]; |
| bool m_scissorEnabled; |
| GC3Dfloat m_clearDepth; |
| GC3Dint m_clearStencil; |
| GC3Dboolean m_colorMask[4]; |
| |
| long m_stencilBits; |
| GC3Duint m_stencilMask, m_stencilMaskBack; |
| GC3Dint m_stencilFuncRef, m_stencilFuncRefBack; // Note that these are the user specified values, not the internal clamped value. |
| GC3Duint m_stencilFuncMask, m_stencilFuncMaskBack; |
| |
| bool m_isGLES2Compliant; |
| bool m_isGLES2NPOTStrict; |
| bool m_isErrorGeneratedOnOutOfBoundsAccesses; |
| bool m_isResourceSafe; |
| bool m_isDepthStencilSupported; |
| |
| // Enabled extension objects. |
| RefPtr<OESTextureFloat> m_oesTextureFloat; |
| RefPtr<OESStandardDerivatives> m_oesStandardDerivatives; |
| RefPtr<OESVertexArrayObject> m_oesVertexArrayObject; |
| RefPtr<WebKitLoseContext> m_webkitLoseContext; |
| |
| // Helpers for getParameter and others |
| WebGLGetInfo getBooleanParameter(GC3Denum); |
| WebGLGetInfo getBooleanArrayParameter(GC3Denum); |
| WebGLGetInfo getFloatParameter(GC3Denum); |
| WebGLGetInfo getIntParameter(GC3Denum); |
| WebGLGetInfo getUnsignedIntParameter(GC3Denum); |
| WebGLGetInfo getWebGLFloatArrayParameter(GC3Denum); |
| WebGLGetInfo getWebGLIntArrayParameter(GC3Denum); |
| |
| // Clear the backbuffer if it was composited since the last operation. |
| // clearMask is set to the bitfield of any clear that would happen anyway at this time |
| // and the function returns true if that clear is now unnecessary. |
| bool clearIfComposited(GC3Dbitfield clearMask = 0); |
| |
| void texImage2DBase(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| GC3Denum format, GC3Denum type, void* pixels, ExceptionCode&); |
| void texImage2DImpl(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, Image*, |
| bool flipY, bool premultiplyAlpha, ExceptionCode&); |
| void texSubImage2DBase(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Dsizei width, GC3Dsizei height, |
| GC3Denum format, GC3Denum type, void* pixels, ExceptionCode&); |
| void texSubImage2DImpl(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Denum format, GC3Denum type, |
| Image* image, bool flipY, bool premultiplyAlpha, ExceptionCode&); |
| |
| void handleNPOTTextures(bool prepareToDraw); |
| |
| void createFallbackBlackTextures1x1(); |
| |
| // Helper function for copyTex{Sub}Image, check whether the internalformat |
| // and the color buffer format of the current bound framebuffer combination |
| // is valid. |
| bool isTexInternalFormatColorBufferCombinationValid(GC3Denum texInternalFormat, |
| GC3Denum colorBufferFormat); |
| |
| // Helper function to get the bound framebuffer's color buffer format. |
| GC3Denum getBoundFramebufferColorFormat(); |
| |
| // Helper function to get the bound framebuffer's width. |
| int getBoundFramebufferWidth(); |
| |
| // Helper function to get the bound framebuffer's height. |
| int getBoundFramebufferHeight(); |
| |
| // Helper function to check if size is non-negative. |
| // Generate GL error and return false for negative inputs; otherwise, return true. |
| bool validateSize(GC3Dint x, GC3Dint y); |
| |
| // Helper function to check if all characters in the string belong to the |
| // ASCII subset as defined in GLSL ES 1.0 spec section 3.1. |
| bool validateString(const String&); |
| |
| // Helper function to check target and texture bound to the target. |
| // Generate GL errors and return 0 if target is invalid or texture bound is |
| // null. Otherwise, return the texture bound to the target. |
| WebGLTexture* validateTextureBinding(GC3Denum target, bool useSixEnumsForCubeMap); |
| |
| // Helper function to check input format/type for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if parameters are invalid. |
| bool validateTexFuncFormatAndType(GC3Denum format, GC3Denum type); |
| |
| // Helper function to check input level for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if level is invalid. |
| bool validateTexFuncLevel(GC3Denum target, GC3Dint level); |
| |
| // Helper function to check input parameters for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if parameters are invalid. |
| bool validateTexFuncParameters(GC3Denum target, GC3Dint level, |
| GC3Denum internalformat, |
| GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| GC3Denum format, GC3Denum type); |
| |
| // Helper function to validate that the given ArrayBufferView |
| // is of the correct type and contains enough data for the texImage call. |
| // Generates GL error and returns false if parameters are invalid. |
| bool validateTexFuncData(GC3Dsizei width, GC3Dsizei height, |
| GC3Denum format, GC3Denum type, |
| ArrayBufferView* pixels); |
| |
| // Helper function to validate mode for draw{Arrays/Elements}. |
| bool validateDrawMode(GC3Denum); |
| |
| // Helper function to validate if front/back stencilMask and stencilFunc settings are the same. |
| bool validateStencilSettings(); |
| |
| // Helper function to validate stencil func. |
| bool validateStencilFunc(GC3Denum); |
| |
| // Helper function for texParameterf and texParameteri. |
| void texParameter(GC3Denum target, GC3Denum pname, GC3Dfloat parami, GC3Dint paramf, bool isFloat); |
| |
| // Helper function to print warnings to console. Currently |
| // used only to warn about use of obsolete functions. |
| void printWarningToConsole(const String&); |
| |
| // Helper function to validate input parameters for framebuffer functions. |
| // Generate GL error if parameters are illegal. |
| bool validateFramebufferFuncParameters(GC3Denum target, GC3Denum attachment); |
| |
| // Helper function to validate blend equation mode. |
| bool validateBlendEquation(GC3Denum); |
| |
| // Helper function to validate blend func factors. |
| bool validateBlendFuncFactors(GC3Denum src, GC3Denum dst); |
| |
| // Helper function to validate a GL capability. |
| bool validateCapability(GC3Denum); |
| |
| // Helper function to validate input parameters for uniform functions. |
| bool validateUniformParameters(const WebGLUniformLocation*, Float32Array*, GC3Dsizei mod); |
| bool validateUniformParameters(const WebGLUniformLocation*, Int32Array*, GC3Dsizei mod); |
| bool validateUniformParameters(const WebGLUniformLocation*, void*, GC3Dsizei size, GC3Dsizei mod); |
| bool validateUniformMatrixParameters(const WebGLUniformLocation*, GC3Dboolean transpose, Float32Array*, GC3Dsizei mod); |
| bool validateUniformMatrixParameters(const WebGLUniformLocation*, GC3Dboolean transpose, void*, GC3Dsizei size, GC3Dsizei mod); |
| |
| // Helper function to validate parameters for bufferData. |
| // Return the current bound buffer to target, or 0 if parameters are invalid. |
| WebGLBuffer* validateBufferDataParameters(GC3Denum target, GC3Denum usage); |
| |
| // Helper function for tex{Sub}Image2D to make sure image is ready. |
| bool validateHTMLImageElement(HTMLImageElement*); |
| |
| // Helper functions for vertexAttribNf{v}. |
| void vertexAttribfImpl(GC3Duint index, GC3Dsizei expectedSize, GC3Dfloat, GC3Dfloat, GC3Dfloat, GC3Dfloat); |
| void vertexAttribfvImpl(GC3Duint index, Float32Array*, GC3Dsizei expectedSize); |
| void vertexAttribfvImpl(GC3Duint index, GC3Dfloat*, GC3Dsizei size, GC3Dsizei expectedSize); |
| |
| // Helper function for delete* (deleteBuffer, deleteProgram, etc) functions. |
| // Return false if caller should return without further processing. |
| bool deleteObject(WebGLObject*); |
| |
| // Helper function for bind* (bindBuffer, bindTexture, etc) and useProgram. |
| // If the object has already been deleted, set deleted to true upon return. |
| // Return false if caller should return without further processing. |
| bool checkObjectToBeBound(WebGLObject*, bool& deleted); |
| |
| // Helpers for simulating vertexAttrib0 |
| void initVertexAttrib0(); |
| bool simulateVertexAttrib0(GC3Dsizei numVertex); |
| void restoreStatesAfterVertexAttrib0Simulation(); |
| |
| friend class WebGLStateRestorer; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif |
