| /* |
| * 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 WebGLRenderingContextBase_h |
| #define WebGLRenderingContextBase_h |
| |
| #include "bindings/core/v8/Nullable.h" |
| #include "bindings/core/v8/ScriptState.h" |
| #include "bindings/core/v8/ScriptValue.h" |
| #include "bindings/core/v8/ScriptWrappable.h" |
| #include "core/CoreExport.h" |
| #include "core/dom/DOMTypedArray.h" |
| #include "core/dom/TypedFlexibleArrayBufferView.h" |
| #include "core/html/canvas/CanvasContextCreationAttributes.h" |
| #include "core/html/canvas/CanvasRenderingContext.h" |
| #include "core/layout/ContentChangeType.h" |
| #include "modules/webgl/WebGLContextAttributes.h" |
| #include "modules/webgl/WebGLExtensionName.h" |
| #include "modules/webgl/WebGLTexture.h" |
| #include "modules/webgl/WebGLVertexArrayObjectBase.h" |
| #include "platform/Timer.h" |
| #include "platform/graphics/ImageBuffer.h" |
| #include "platform/graphics/gpu/DrawingBuffer.h" |
| #include "platform/graphics/gpu/Extensions3DUtil.h" |
| #include "platform/graphics/gpu/WebGLImageConversion.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebGraphicsContext3DProvider.h" |
| #include "third_party/khronos/GLES2/gl2.h" |
| #include "wtf/text/WTFString.h" |
| #include <memory> |
| #include <set> |
| |
| namespace blink { |
| class WebLayer; |
| } |
| |
| namespace gpu { |
| namespace gles2 { |
| class GLES2Interface; |
| } |
| } |
| |
| namespace blink { |
| |
| class ANGLEInstancedArrays; |
| class EXTBlendMinMax; |
| class EXTDisjointTimerQuery; |
| class EXTFragDepth; |
| class EXTShaderTextureLOD; |
| class EXTsRGB; |
| class EXTTextureFilterAnisotropic; |
| class ExceptionState; |
| class HTMLCanvasElementOrOffscreenCanvas; |
| class HTMLImageElement; |
| class HTMLVideoElement; |
| class ImageBitmap; |
| class ImageBuffer; |
| class ImageData; |
| class IntSize; |
| class OESElementIndexUint; |
| class OESStandardDerivatives; |
| class OESTextureFloat; |
| class OESTextureFloatLinear; |
| class OESTextureHalfFloat; |
| class OESTextureHalfFloatLinear; |
| class OESVertexArrayObject; |
| class WaitableEvent; |
| class WebGLActiveInfo; |
| class WebGLBuffer; |
| class WebGLCompressedTextureASTC; |
| class WebGLCompressedTextureATC; |
| class WebGLCompressedTextureETC1; |
| class WebGLCompressedTexturePVRTC; |
| class WebGLCompressedTextureS3TC; |
| class WebGLCompressedTextureS3TCsRGB; |
| class WebGLContextGroup; |
| class WebGLContextObject; |
| class WebGLDebugRendererInfo; |
| class WebGLDebugShaders; |
| class WebGLDepthTexture; |
| class WebGLDrawBuffers; |
| class WebGLExtension; |
| class WebGLFramebuffer; |
| class WebGLLoseContext; |
| class WebGLObject; |
| class WebGLProgram; |
| class WebGLRenderbuffer; |
| class WebGLShader; |
| class WebGLShaderPrecisionFormat; |
| class WebGLSharedObject; |
| class WebGLUniformLocation; |
| class WebGLVertexArrayObjectBase; |
| |
| class WebGLRenderingContextLostCallback; |
| class WebGLRenderingContextErrorMessageCallback; |
| |
| // This class uses the color mask to prevent drawing to the alpha channel, if |
| // the DrawingBuffer requires RGB emulation. |
| class ScopedRGBEmulationColorMask { |
| public: |
| ScopedRGBEmulationColorMask(gpu::gles2::GLES2Interface*, GLboolean* colorMask, DrawingBuffer*); |
| ~ScopedRGBEmulationColorMask(); |
| |
| private: |
| gpu::gles2::GLES2Interface* m_contextGL; |
| GLboolean m_colorMask[4]; |
| const bool m_requiresEmulation; |
| }; |
| |
| class MODULES_EXPORT WebGLRenderingContextBase : public CanvasRenderingContext { |
| WTF_MAKE_NONCOPYABLE(WebGLRenderingContextBase); |
| public: |
| ~WebGLRenderingContextBase() override; |
| |
| virtual String contextName() const = 0; |
| virtual void registerContextExtensions() = 0; |
| |
| virtual void initializeNewContext(); |
| |
| static unsigned getWebGLVersion(const CanvasRenderingContext*); |
| |
| static std::unique_ptr<WebGraphicsContext3DProvider> createWebGraphicsContext3DProvider(HTMLCanvasElement*, const CanvasContextCreationAttributes&, unsigned webGLVersion); |
| static std::unique_ptr<WebGraphicsContext3DProvider> createWebGraphicsContext3DProvider(ScriptState*, const CanvasContextCreationAttributes&, unsigned webGLVersion); |
| static void forceNextWebGLContextCreationToFail(); |
| |
| unsigned version() const { return m_version; } |
| |
| int drawingBufferWidth() const; |
| int drawingBufferHeight() const; |
| |
| void activeTexture(GLenum texture); |
| void attachShader(WebGLProgram*, WebGLShader*); |
| void bindAttribLocation(WebGLProgram*, GLuint index, const String& name); |
| void bindBuffer(GLenum target, WebGLBuffer*); |
| virtual void bindFramebuffer(GLenum target, WebGLFramebuffer*); |
| void bindRenderbuffer(GLenum target, WebGLRenderbuffer*); |
| void bindTexture(GLenum target, WebGLTexture*); |
| void blendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha); |
| void blendEquation(GLenum mode); |
| void blendEquationSeparate(GLenum modeRGB, GLenum modeAlpha); |
| void blendFunc(GLenum sfactor, GLenum dfactor); |
| void blendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha); |
| |
| void bufferData(GLenum target, long long size, GLenum usage); |
| void bufferData(GLenum target, DOMArrayBuffer* data, GLenum usage); |
| void bufferData(GLenum target, DOMArrayBufferView* data, GLenum usage); |
| void bufferSubData(GLenum target, long long offset, DOMArrayBuffer* data); |
| void bufferSubData(GLenum target, long long offset, const FlexibleArrayBufferView& data); |
| |
| GLenum checkFramebufferStatus(GLenum target); |
| void clear(GLbitfield mask); |
| void clearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha); |
| void clearDepth(GLfloat); |
| void clearStencil(GLint); |
| void colorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha); |
| void compileShader(WebGLShader*); |
| |
| void compressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, DOMArrayBufferView* data); |
| void compressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, DOMArrayBufferView* data); |
| |
| void copyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border); |
| void copyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height); |
| |
| WebGLBuffer* createBuffer(); |
| WebGLFramebuffer* createFramebuffer(); |
| WebGLProgram* createProgram(); |
| WebGLRenderbuffer* createRenderbuffer(); |
| WebGLShader* createShader(GLenum type); |
| WebGLTexture* createTexture(); |
| |
| void cullFace(GLenum mode); |
| |
| void deleteBuffer(WebGLBuffer*); |
| virtual void deleteFramebuffer(WebGLFramebuffer*); |
| void deleteProgram(WebGLProgram*); |
| void deleteRenderbuffer(WebGLRenderbuffer*); |
| void deleteShader(WebGLShader*); |
| void deleteTexture(WebGLTexture*); |
| |
| void depthFunc(GLenum); |
| void depthMask(GLboolean); |
| void depthRange(GLfloat zNear, GLfloat zFar); |
| void detachShader(WebGLProgram*, WebGLShader*); |
| void disable(GLenum cap); |
| void disableVertexAttribArray(GLuint index); |
| void drawArrays(GLenum mode, GLint first, GLsizei count); |
| void drawElements(GLenum mode, GLsizei count, GLenum type, long long offset); |
| |
| void drawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei primcount); |
| void drawElementsInstancedANGLE(GLenum mode, GLsizei count, GLenum type, long long offset, GLsizei primcount); |
| |
| void enable(GLenum cap); |
| void enableVertexAttribArray(GLuint index); |
| void finish(); |
| void flush(); |
| void framebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, WebGLRenderbuffer*); |
| void framebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, WebGLTexture*, GLint level); |
| void frontFace(GLenum mode); |
| void generateMipmap(GLenum target); |
| |
| WebGLActiveInfo* getActiveAttrib(WebGLProgram*, GLuint index); |
| WebGLActiveInfo* getActiveUniform(WebGLProgram*, GLuint index); |
| bool getAttachedShaders(WebGLProgram*, HeapVector<Member<WebGLShader>>&); |
| Nullable<HeapVector<Member<WebGLShader>>> getAttachedShaders(WebGLProgram*); |
| GLint getAttribLocation(WebGLProgram*, const String& name); |
| ScriptValue getBufferParameter(ScriptState*, GLenum target, GLenum pname); |
| void getContextAttributes(Nullable<WebGLContextAttributes>&); |
| GLenum getError(); |
| ScriptValue getExtension(ScriptState*, const String& name); |
| virtual ScriptValue getFramebufferAttachmentParameter(ScriptState*, GLenum target, GLenum attachment, GLenum pname); |
| virtual ScriptValue getParameter(ScriptState*, GLenum pname); |
| ScriptValue getProgramParameter(ScriptState*, WebGLProgram*, GLenum pname); |
| String getProgramInfoLog(WebGLProgram*); |
| ScriptValue getRenderbufferParameter(ScriptState*, GLenum target, GLenum pname); |
| ScriptValue getShaderParameter(ScriptState*, WebGLShader*, GLenum pname); |
| String getShaderInfoLog(WebGLShader*); |
| WebGLShaderPrecisionFormat* getShaderPrecisionFormat(GLenum shaderType, GLenum precisionType); |
| String getShaderSource(WebGLShader*); |
| Nullable<Vector<String>> getSupportedExtensions(); |
| virtual ScriptValue getTexParameter(ScriptState*, GLenum target, GLenum pname); |
| ScriptValue getUniform(ScriptState*, WebGLProgram*, const WebGLUniformLocation*); |
| WebGLUniformLocation* getUniformLocation(WebGLProgram*, const String&); |
| ScriptValue getVertexAttrib(ScriptState*, GLuint index, GLenum pname); |
| long long getVertexAttribOffset(GLuint index, GLenum pname); |
| |
| void hint(GLenum target, GLenum mode); |
| GLboolean isBuffer(WebGLBuffer*); |
| bool isContextLost() const override; |
| GLboolean isEnabled(GLenum cap); |
| GLboolean isFramebuffer(WebGLFramebuffer*); |
| GLboolean isProgram(WebGLProgram*); |
| GLboolean isRenderbuffer(WebGLRenderbuffer*); |
| GLboolean isShader(WebGLShader*); |
| GLboolean isTexture(WebGLTexture*); |
| |
| void lineWidth(GLfloat); |
| void linkProgram(WebGLProgram*); |
| virtual void pixelStorei(GLenum pname, GLint param); |
| void polygonOffset(GLfloat factor, GLfloat units); |
| virtual void readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, DOMArrayBufferView* pixels); |
| void renderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height); |
| void sampleCoverage(GLfloat value, GLboolean invert); |
| void scissor(GLint x, GLint y, GLsizei width, GLsizei height); |
| void shaderSource(WebGLShader*, const String&); |
| void stencilFunc(GLenum func, GLint ref, GLuint mask); |
| void stencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask); |
| void stencilMask(GLuint); |
| void stencilMaskSeparate(GLenum face, GLuint mask); |
| void stencilOp(GLenum fail, GLenum zfail, GLenum zpass); |
| void stencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass); |
| |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLsizei width, GLsizei height, GLint border, |
| GLenum format, GLenum type, DOMArrayBufferView*); |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLenum format, GLenum type, ImageData*); |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLenum format, GLenum type, HTMLImageElement*, ExceptionState&); |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLenum format, GLenum type, HTMLCanvasElement*, ExceptionState&); |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLenum format, GLenum type, HTMLVideoElement*, ExceptionState&); |
| void texImage2D(GLenum target, GLint level, GLint internalformat, |
| GLenum format, GLenum type, ImageBitmap*, ExceptionState&); |
| |
| void texParameterf(GLenum target, GLenum pname, GLfloat param); |
| void texParameteri(GLenum target, GLenum pname, GLint param); |
| |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLsizei width, GLsizei height, |
| GLenum format, GLenum type, DOMArrayBufferView*); |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLenum format, GLenum type, ImageData*); |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLenum format, GLenum type, HTMLImageElement*, ExceptionState&); |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLenum format, GLenum type, HTMLCanvasElement*, ExceptionState&); |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLenum format, GLenum type, HTMLVideoElement*, ExceptionState&); |
| void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, |
| GLenum format, GLenum type, ImageBitmap*, ExceptionState&); |
| |
| void uniform1f(const WebGLUniformLocation*, GLfloat x); |
| void uniform1fv(const WebGLUniformLocation*, const FlexibleFloat32ArrayView&); |
| void uniform1fv(const WebGLUniformLocation*, Vector<GLfloat>&); |
| void uniform1i(const WebGLUniformLocation*, GLint x); |
| void uniform1iv(const WebGLUniformLocation*, const FlexibleInt32ArrayView&); |
| void uniform1iv(const WebGLUniformLocation*, Vector<GLint>&); |
| void uniform2f(const WebGLUniformLocation*, GLfloat x, GLfloat y); |
| void uniform2fv(const WebGLUniformLocation*, const FlexibleFloat32ArrayView&); |
| void uniform2fv(const WebGLUniformLocation*, Vector<GLfloat>&); |
| void uniform2i(const WebGLUniformLocation*, GLint x, GLint y); |
| void uniform2iv(const WebGLUniformLocation*, const FlexibleInt32ArrayView&); |
| void uniform2iv(const WebGLUniformLocation*, Vector<GLint>&); |
| void uniform3f(const WebGLUniformLocation*, GLfloat x, GLfloat y, GLfloat z); |
| void uniform3fv(const WebGLUniformLocation*, const FlexibleFloat32ArrayView&); |
| void uniform3fv(const WebGLUniformLocation*, Vector<GLfloat>&); |
| void uniform3i(const WebGLUniformLocation*, GLint x, GLint y, GLint z); |
| void uniform3iv(const WebGLUniformLocation*, const FlexibleInt32ArrayView&); |
| void uniform3iv(const WebGLUniformLocation*, Vector<GLint>&); |
| void uniform4f(const WebGLUniformLocation*, GLfloat x, GLfloat y, GLfloat z, GLfloat w); |
| void uniform4fv(const WebGLUniformLocation*, const FlexibleFloat32ArrayView&); |
| void uniform4fv(const WebGLUniformLocation*, Vector<GLfloat>&); |
| void uniform4i(const WebGLUniformLocation*, GLint x, GLint y, GLint z, GLint w); |
| void uniform4iv(const WebGLUniformLocation*, const FlexibleInt32ArrayView&); |
| void uniform4iv(const WebGLUniformLocation*, Vector<GLint>&); |
| void uniformMatrix2fv(const WebGLUniformLocation*, GLboolean transpose, DOMFloat32Array* value); |
| void uniformMatrix2fv(const WebGLUniformLocation*, GLboolean transpose, Vector<GLfloat>& value); |
| void uniformMatrix3fv(const WebGLUniformLocation*, GLboolean transpose, DOMFloat32Array* value); |
| void uniformMatrix3fv(const WebGLUniformLocation*, GLboolean transpose, Vector<GLfloat>& value); |
| void uniformMatrix4fv(const WebGLUniformLocation*, GLboolean transpose, DOMFloat32Array* value); |
| void uniformMatrix4fv(const WebGLUniformLocation*, GLboolean transpose, Vector<GLfloat>& value); |
| |
| void useProgram(WebGLProgram*); |
| void validateProgram(WebGLProgram*); |
| |
| void vertexAttrib1f(GLuint index, GLfloat x); |
| void vertexAttrib1fv(GLuint index, const DOMFloat32Array* values); |
| void vertexAttrib1fv(GLuint index, const Vector<GLfloat>& values); |
| void vertexAttrib2f(GLuint index, GLfloat x, GLfloat y); |
| void vertexAttrib2fv(GLuint index, const DOMFloat32Array* values); |
| void vertexAttrib2fv(GLuint index, const Vector<GLfloat>& values); |
| void vertexAttrib3f(GLuint index, GLfloat x, GLfloat y, GLfloat z); |
| void vertexAttrib3fv(GLuint index, const DOMFloat32Array* values); |
| void vertexAttrib3fv(GLuint index, const Vector<GLfloat>& values); |
| void vertexAttrib4f(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w); |
| void vertexAttrib4fv(GLuint index, const DOMFloat32Array* values); |
| void vertexAttrib4fv(GLuint index, const Vector<GLfloat>& values); |
| void vertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, |
| GLsizei stride, long long offset); |
| |
| void vertexAttribDivisorANGLE(GLuint index, GLuint divisor); |
| |
| void viewport(GLint x, GLint y, GLsizei width, GLsizei height); |
| |
| // WEBGL_lose_context support |
| enum AutoRecoveryMethod { |
| // Don't restore automatically. |
| Manual, |
| |
| // Restore when resources are available. |
| WhenAvailable, |
| |
| // Restore as soon as possible, but only when |
| // the canvas is visible. |
| Auto |
| }; |
| void loseContext(LostContextMode) override; |
| void forceLostContext(LostContextMode, AutoRecoveryMethod); |
| void forceRestoreContext(); |
| void loseContextImpl(LostContextMode, AutoRecoveryMethod); |
| |
| gpu::gles2::GLES2Interface* contextGL() const |
| { |
| DrawingBuffer* d = drawingBuffer(); |
| if (!d) |
| return nullptr; |
| return d->contextGL(); |
| } |
| WebGLContextGroup* contextGroup() const { return m_contextGroup.get(); } |
| Extensions3DUtil* extensionsUtil(); |
| |
| void reshape(int width, int height) override; |
| |
| void markLayerComposited() override; |
| ImageData* paintRenderingResultsToImageData(SourceDrawingBuffer) override; |
| |
| void removeSharedObject(WebGLSharedObject*); |
| void removeContextObject(WebGLContextObject*); |
| |
| unsigned maxVertexAttribs() const { return m_maxVertexAttribs; } |
| |
| // Eagerly finalize WebGLRenderingContextBase in order for it |
| // to (first) be able to detach its WebGLContextObjects, before |
| // they're later swept and finalized. |
| EAGERLY_FINALIZE(); |
| DECLARE_EAGER_FINALIZATION_OPERATOR_NEW(); |
| DECLARE_VIRTUAL_TRACE(); |
| |
| // Returns approximate gpu memory allocated per pixel. |
| int externallyAllocatedBytesPerPixel() override; |
| |
| class TextureUnitState { |
| DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
| public: |
| Member<WebGLTexture> m_texture2DBinding; |
| Member<WebGLTexture> m_textureCubeMapBinding; |
| Member<WebGLTexture> m_texture3DBinding; |
| Member<WebGLTexture> m_texture2DArrayBinding; |
| |
| DECLARE_TRACE(); |
| }; |
| |
| PassRefPtr<Image> getImage(AccelerationHint, SnapshotReason) const override; |
| void setFilterQuality(SkFilterQuality) override; |
| bool isWebGL2OrHigher() { return version() >= 2; } |
| |
| void getHTMLOrOffscreenCanvas(HTMLCanvasElementOrOffscreenCanvas&) const; |
| |
| protected: |
| friend class EXTDisjointTimerQuery; |
| friend class WebGLDrawBuffers; |
| friend class WebGLFramebuffer; |
| friend class WebGLObject; |
| friend class WebGLContextObject; |
| friend class OESVertexArrayObject; |
| friend class WebGLDebugShaders; |
| friend class WebGLCompressedTextureASTC; |
| friend class WebGLCompressedTextureATC; |
| friend class WebGLCompressedTextureETC1; |
| friend class WebGLCompressedTexturePVRTC; |
| friend class WebGLCompressedTextureS3TC; |
| friend class WebGLCompressedTextureS3TCsRGB; |
| friend class WebGLRenderingContextErrorMessageCallback; |
| friend class WebGLVertexArrayObjectBase; |
| friend class ScopedTexture2DRestorer; |
| friend class ScopedFramebufferRestorer; |
| // To allow V8WebGL[2]RenderingContext to call visitChildDOMWrappers. |
| friend class V8WebGLRenderingContext; |
| |
| WebGLRenderingContextBase(HTMLCanvasElement*, std::unique_ptr<WebGraphicsContext3DProvider>, const CanvasContextCreationAttributes&, unsigned); |
| WebGLRenderingContextBase(OffscreenCanvas*, std::unique_ptr<WebGraphicsContext3DProvider>, const CanvasContextCreationAttributes&, unsigned); |
| PassRefPtr<DrawingBuffer> createDrawingBuffer(std::unique_ptr<WebGraphicsContext3DProvider>); |
| void setupFlags(); |
| |
| // CanvasRenderingContext implementation. |
| bool is3d() const override { return true; } |
| bool isAccelerated() const override { return true; } |
| void setIsHidden(bool) override; |
| bool paintRenderingResultsToCanvas(SourceDrawingBuffer) override; |
| WebLayer* platformLayer() const override; |
| void stop() override; |
| |
| void addSharedObject(WebGLSharedObject*); |
| void addContextObject(WebGLContextObject*); |
| void detachAndRemoveAllObjects(); |
| |
| void destroyContext(); |
| void markContextChanged(ContentChangeType); |
| |
| void onErrorMessage(const char*, int32_t id); |
| |
| void notifyCanvasContextChanged(); |
| |
| // 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 sizeInBytes(GLenum type) const; |
| |
| // Check if each enabled vertex attribute is bound to a buffer. |
| bool validateRenderingState(const char*); |
| |
| bool validateWebGLObject(const char*, WebGLObject*); |
| |
| // Adds a compressed texture format. |
| void addCompressedTextureFormat(GLenum); |
| void removeAllCompressedTextureFormats(); |
| |
| // Set UNPACK_ALIGNMENT to 1, all other parameters to 0. |
| virtual void resetUnpackParameters(); |
| // Restore the client unpack parameters. |
| virtual void restoreUnpackParameters(); |
| |
| virtual void visitChildDOMWrappers(v8::Isolate*, const v8::Persistent<v8::Object>&); |
| |
| PassRefPtr<Image> drawImageIntoBuffer(PassRefPtr<Image>, int width, int height, const char* functionName); |
| |
| PassRefPtr<Image> videoFrameToImage(HTMLVideoElement*); |
| |
| // Structure for rendering to a DrawingBuffer, instead of directly |
| // to the back-buffer of m_context. |
| RefPtr<DrawingBuffer> m_drawingBuffer; |
| DrawingBuffer* drawingBuffer() const; |
| |
| RefPtr<WebGLContextGroup> m_contextGroup; |
| |
| bool m_isHidden; |
| LostContextMode m_contextLostMode; |
| AutoRecoveryMethod m_autoRecoveryMethod; |
| // Dispatches a context lost event once it is determined that one is needed. |
| // This is used for synthetic, WEBGL_lose_context and real context losses. For real ones, it's |
| // likely that there's no JavaScript on the stack, but that might be dependent |
| // on how exactly the platform discovers that the context was lost. For better |
| // portability we always defer the dispatch of the event. |
| Timer<WebGLRenderingContextBase> m_dispatchContextLostEventTimer; |
| bool m_restoreAllowed; |
| Timer<WebGLRenderingContextBase> m_restoreTimer; |
| |
| bool m_markedCanvasDirty; |
| HeapHashSet<WeakMember<WebGLContextObject>> m_contextObjects; |
| |
| // List of bound VBO's. Used to maintain info about sizes for ARRAY_BUFFER and stored values for ELEMENT_ARRAY_BUFFER |
| Member<WebGLBuffer> m_boundArrayBuffer; |
| |
| Member<WebGLVertexArrayObjectBase> m_defaultVertexArrayObject; |
| Member<WebGLVertexArrayObjectBase> m_boundVertexArrayObject; |
| void setBoundVertexArrayObject(WebGLVertexArrayObjectBase*); |
| |
| enum VertexAttribValueType { |
| Float32ArrayType, |
| Int32ArrayType, |
| Uint32ArrayType, |
| }; |
| |
| Vector<VertexAttribValueType> m_vertexAttribType; |
| unsigned m_maxVertexAttribs; |
| void setVertexAttribType(GLuint index, VertexAttribValueType); |
| |
| Member<WebGLProgram> m_currentProgram; |
| Member<WebGLFramebuffer> m_framebufferBinding; |
| Member<WebGLRenderbuffer> m_renderbufferBinding; |
| |
| HeapVector<TextureUnitState> m_textureUnits; |
| unsigned long m_activeTextureUnit; |
| |
| Vector<GLenum> m_compressedTextureFormats; |
| |
| // 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&); |
| private: |
| void bubbleToFront(int idx); |
| std::unique_ptr<std::unique_ptr<ImageBuffer>[]> m_buffers; |
| int m_capacity; |
| }; |
| LRUImageBufferCache m_generatedImageCache; |
| |
| GLint m_maxTextureSize; |
| GLint m_maxCubeMapTextureSize; |
| GLint m_max3DTextureSize; |
| GLint m_maxArrayTextureLayers; |
| GLint m_maxRenderbufferSize; |
| GLint m_maxViewportDims[2]; |
| GLint m_maxTextureLevel; |
| GLint m_maxCubeMapTextureLevel; |
| GLint m_max3DTextureLevel; |
| |
| GLint m_maxDrawBuffers; |
| GLint m_maxColorAttachments; |
| GLenum m_backDrawBuffer; |
| bool m_drawBuffersWebGLRequirementsChecked; |
| bool m_drawBuffersSupported; |
| |
| GLenum m_readBufferOfDefaultFramebuffer; |
| |
| GLint m_packAlignment; |
| GLint m_unpackAlignment; |
| bool m_unpackFlipY; |
| bool m_unpackPremultiplyAlpha; |
| GLenum m_unpackColorspaceConversion; |
| |
| GLfloat m_clearColor[4]; |
| bool m_scissorEnabled; |
| GLfloat m_clearDepth; |
| GLint m_clearStencil; |
| GLboolean m_colorMask[4]; |
| GLboolean m_depthMask; |
| |
| bool m_stencilEnabled; |
| GLuint m_stencilMask, m_stencilMaskBack; |
| GLint m_stencilFuncRef, m_stencilFuncRefBack; // Note that these are the user specified values, not the internal clamped value. |
| GLuint m_stencilFuncMask, m_stencilFuncMaskBack; |
| |
| bool m_isDepthStencilSupported; |
| |
| bool m_synthesizedErrorsToConsole; |
| int m_numGLErrorsToConsoleAllowed; |
| |
| unsigned long m_onePlusMaxNonDefaultTextureUnit; |
| |
| std::unique_ptr<Extensions3DUtil> m_extensionsUtil; |
| |
| enum ExtensionFlags { |
| ApprovedExtension = 0x00, |
| // Extension that is behind the draft extensions runtime flag: |
| DraftExtension = 0x01, |
| }; |
| |
| class ExtensionTracker : public GarbageCollected<ExtensionTracker> { |
| public: |
| ExtensionTracker(ExtensionFlags flags, const char* const* prefixes) |
| : m_draft(flags & DraftExtension) |
| , m_prefixes(prefixes) |
| { |
| } |
| |
| bool draft() const |
| { |
| return m_draft; |
| } |
| |
| const char* const* prefixes() const; |
| bool matchesNameWithPrefixes(const String&) const; |
| |
| virtual WebGLExtension* getExtension(WebGLRenderingContextBase*) = 0; |
| virtual bool supported(WebGLRenderingContextBase*) const = 0; |
| virtual const char* extensionName() const = 0; |
| virtual void loseExtension(bool) = 0; |
| |
| // This is only used for keeping the JS wrappers of extensions alive. |
| virtual WebGLExtension* getExtensionObjectIfAlreadyEnabled() = 0; |
| |
| DEFINE_INLINE_VIRTUAL_TRACE() { } |
| |
| private: |
| bool m_draft; |
| const char* const* m_prefixes; |
| }; |
| |
| template <typename T> |
| class TypedExtensionTracker final : public ExtensionTracker { |
| public: |
| static TypedExtensionTracker<T>* create(Member<T>& extensionField, ExtensionFlags flags, const char* const* prefixes) |
| { |
| return new TypedExtensionTracker<T>(extensionField, flags, prefixes); |
| } |
| |
| WebGLExtension* getExtension(WebGLRenderingContextBase* context) override |
| { |
| if (!m_extension) { |
| m_extension = T::create(context); |
| m_extensionField = m_extension; |
| } |
| |
| return m_extension; |
| } |
| |
| bool supported(WebGLRenderingContextBase* context) const override |
| { |
| return T::supported(context); |
| } |
| |
| const char* extensionName() const override |
| { |
| return T::extensionName(); |
| } |
| |
| void loseExtension(bool force) override |
| { |
| if (m_extension) { |
| m_extension->lose(force); |
| if (m_extension->isLost()) |
| m_extension = nullptr; |
| } |
| } |
| |
| WebGLExtension* getExtensionObjectIfAlreadyEnabled() override |
| { |
| return m_extension; |
| } |
| |
| DEFINE_INLINE_VIRTUAL_TRACE() |
| { |
| visitor->trace(m_extension); |
| ExtensionTracker::trace(visitor); |
| } |
| |
| private: |
| TypedExtensionTracker(Member<T>& extensionField, ExtensionFlags flags, const char* const* prefixes) |
| : ExtensionTracker(flags, prefixes) |
| , m_extensionField(extensionField) |
| { |
| } |
| |
| GC_PLUGIN_IGNORE("http://crbug.com/519953") |
| Member<T>& m_extensionField; |
| // ExtensionTracker holds it's own reference to the extension to ensure |
| // that it is not deleted before this object's destructor is called |
| Member<T> m_extension; |
| }; |
| |
| bool m_extensionEnabled[WebGLExtensionNameCount]; |
| HeapVector<Member<ExtensionTracker>> m_extensions; |
| |
| template <typename T> |
| void registerExtension(Member<T>& extensionPtr, ExtensionFlags flags = ApprovedExtension, const char* const* prefixes = nullptr) |
| { |
| m_extensions.append(TypedExtensionTracker<T>::create(extensionPtr, flags, prefixes)); |
| } |
| |
| bool extensionSupportedAndAllowed(const ExtensionTracker*); |
| |
| inline bool extensionEnabled(WebGLExtensionName name) |
| { |
| return m_extensionEnabled[name]; |
| } |
| |
| // ScopedDrawingBufferBinder is used for ReadPixels/CopyTexImage2D/CopySubImage2D to read from |
| // a multisampled DrawingBuffer. In this situation, we need to blit to a single sampled buffer |
| // for reading, during which the bindings could be changed and need to be recovered. |
| class ScopedDrawingBufferBinder { |
| STACK_ALLOCATED(); |
| public: |
| ScopedDrawingBufferBinder(DrawingBuffer* drawingBuffer, WebGLFramebuffer* framebufferBinding) |
| : m_drawingBuffer(drawingBuffer) |
| , m_readFramebufferBinding(framebufferBinding) |
| { |
| // Commit DrawingBuffer if needed (e.g., for multisampling) |
| if (!m_readFramebufferBinding && m_drawingBuffer) |
| m_drawingBuffer->commit(); |
| } |
| |
| ~ScopedDrawingBufferBinder() |
| { |
| // Restore DrawingBuffer if needed |
| if (!m_readFramebufferBinding && m_drawingBuffer) |
| m_drawingBuffer->restoreFramebufferBindings(); |
| } |
| |
| private: |
| DrawingBuffer* m_drawingBuffer; |
| Member<WebGLFramebuffer> m_readFramebufferBinding; |
| }; |
| |
| // Errors raised by synthesizeGLError() while the context is lost. |
| Vector<GLenum> m_lostContextErrors; |
| // Other errors raised by synthesizeGLError(). |
| Vector<GLenum> m_syntheticErrors; |
| |
| bool m_isWebGL2FormatsTypesAdded; |
| bool m_isWebGL2InternalFormatsCopyTexImageAdded; |
| bool m_isOESTextureFloatFormatsTypesAdded; |
| bool m_isOESTextureHalfFloatFormatsTypesAdded; |
| bool m_isWebGLDepthTextureFormatsTypesAdded; |
| bool m_isEXTsRGBFormatsTypesAdded; |
| |
| std::set<GLenum> m_supportedInternalFormats; |
| std::set<GLenum> m_supportedInternalFormatsCopyTexImage; |
| std::set<GLenum> m_supportedFormats; |
| std::set<GLenum> m_supportedTypes; |
| |
| // Helpers for getParameter and others |
| ScriptValue getBooleanParameter(ScriptState*, GLenum); |
| ScriptValue getBooleanArrayParameter(ScriptState*, GLenum); |
| ScriptValue getFloatParameter(ScriptState*, GLenum); |
| ScriptValue getIntParameter(ScriptState*, GLenum); |
| ScriptValue getInt64Parameter(ScriptState*, GLenum); |
| ScriptValue getUnsignedIntParameter(ScriptState*, GLenum); |
| ScriptValue getWebGLFloatArrayParameter(ScriptState*, GLenum); |
| ScriptValue getWebGLIntArrayParameter(ScriptState*, GLenum); |
| |
| // 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 |CombinedClear| if that clear is now unnecessary. |
| enum HowToClear { |
| // Skip clearing the backbuffer. |
| Skipped, |
| // Clear the backbuffer. |
| JustClear, |
| // Combine webgl.clear() API with the backbuffer clear, so webgl.clear() |
| // doesn't have to call glClear() again. |
| CombinedClear |
| }; |
| HowToClear clearIfComposited(GLbitfield clearMask = 0); |
| |
| // Helper to restore state that clearing the framebuffer may destroy. |
| void restoreStateAfterClear(); |
| |
| // Convert texture internal format. |
| GLenum convertTexInternalFormat(GLenum internalformat, GLenum type); |
| |
| enum TexImageFunctionType { |
| TexImage, |
| TexSubImage, |
| CopyTexImage, |
| CompressedTexImage |
| }; |
| enum TexImageFunctionID { |
| TexImage2D, |
| TexSubImage2D, |
| TexImage3D, |
| TexSubImage3D |
| }; |
| enum TexImageByGPUType { |
| TexImage2DByGPU, |
| TexSubImage2DByGPU, |
| TexSubImage3DByGPU |
| }; |
| enum TexImageDimension { |
| Tex2D, |
| Tex3D |
| }; |
| void texImage2DBase(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels); |
| void texImageImpl(TexImageFunctionID, GLenum target, GLint level, GLint internalformat, GLint xoffset, GLint yoffset, GLint zoffset, |
| GLenum format, GLenum type, Image*, WebGLImageConversion::ImageHtmlDomSource, bool flipY, bool premultiplyAlpha); |
| |
| // Copy from the source directly to the texture via the gpu, without a read-back to system memory. |
| // Souce could be canvas or imageBitmap. |
| void texImageByGPU(TexImageByGPUType, WebGLTexture*, GLenum target, GLint level, GLint internalformat, |
| GLenum type, GLint xoffset, GLint yoffset, GLint zoffset, CanvasImageSource*); |
| virtual bool canUseTexImageByGPU(TexImageFunctionID, GLint internalformat, GLenum type); |
| |
| virtual WebGLImageConversion::PixelStoreParams getPackPixelStoreParams(); |
| virtual WebGLImageConversion::PixelStoreParams getUnpackPixelStoreParams(TexImageDimension); |
| |
| // 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(GLenum texInternalFormat, GLenum colorBufferFormat); |
| |
| // Helper function to verify limits on the length of uniform and attribute locations. |
| virtual unsigned getMaxWebGLLocationLength() const { return 256; } |
| bool validateLocationLength(const char* functionName, const String&); |
| |
| // Helper function to check if size is non-negative. |
| // Generate GL error and return false for negative inputs; otherwise, return true. |
| bool validateSize(const char* functionName, GLint x, GLint y, GLint z = 0); |
| |
| // 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 char* functionName, const String&); |
| |
| // Helper function to check if all characters in the shader source belong to the ASCII |
| // subset as defined in GLSL ES 1.0 spec section 3.1 Character Set for WebGL 1.0 and |
| // in GLSL ES 3.00 spec section 3.1 Character Set for WebGL 2.0. |
| bool validateShaderSource(const String&); |
| |
| // Helper function to check texture binding 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(const char* functionName, GLenum target); |
| |
| // Wrapper function for validateTexture2D(3D)Binding, used in texImageHelper functions. |
| virtual WebGLTexture* validateTexImageBinding(const char*, TexImageFunctionID, GLenum); |
| |
| // Helper function to check texture 2D 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* validateTexture2DBinding(const char* functionName, GLenum target); |
| |
| // Helper function to check input internalformat/format/type for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if parameters are invalid. |
| bool validateTexFuncFormatAndType(const char* functionName, TexImageFunctionType, GLenum internalformat, GLenum format, GLenum type, GLint level); |
| |
| // Helper function to check readbuffer validity for copyTex{Sub}Image. |
| // If yes, obtains the bound read framebuffer, returns true. |
| // If not, generates a GL error, returns false. |
| bool validateReadBufferAndGetInfo(const char* functionName, WebGLFramebuffer*& readFramebufferBinding); |
| |
| // Helper function to check format/type and ArrayBuffer view type for readPixels. |
| // Generates INVALID_ENUM and returns false if parameters are invalid. |
| // Generates INVALID_OPERATION if ArrayBuffer view type is incompatible with type. |
| virtual bool validateReadPixelsFormatAndType(GLenum format, GLenum type, DOMArrayBufferView*); |
| |
| // Helper function to check parameters of readPixels. Returns true if all parameters |
| // are valid. Otherwise, generates appropriate error and returns false. |
| bool validateReadPixelsFuncParameters(GLsizei width, GLsizei height, GLenum format, GLenum type, DOMArrayBufferView*, long long bufferSize); |
| |
| virtual GLint getMaxTextureLevelForTarget(GLenum target); |
| |
| // Helper function to check input level for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if level is invalid. |
| bool validateTexFuncLevel(const char* functionName, GLenum target, GLint level); |
| |
| // Helper function to check if a 64-bit value is non-negative and can fit into a 32-bit integer. |
| // Generates GL error and returns false if not. |
| bool validateValueFitNonNegInt32(const char* functionName, const char* paramName, long long value); |
| |
| enum TexFuncValidationSourceType { |
| SourceArrayBufferView, |
| SourceImageData, |
| SourceHTMLImageElement, |
| SourceHTMLCanvasElement, |
| SourceHTMLVideoElement, |
| SourceImageBitmap, |
| SourceUnpackBuffer, |
| }; |
| |
| // Helper function for tex{Sub}Image{2|3}D to check if the input format/type/level/target/width/height/depth/border/xoffset/yoffset/zoffset are valid. |
| // Otherwise, it would return quickly without doing other work. |
| bool validateTexFunc(const char* functionName, TexImageFunctionType, TexFuncValidationSourceType, GLenum target, GLint level, GLenum internalformat, GLsizei width, |
| GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, GLint xoffset, GLint yoffset, GLint zoffset); |
| |
| // Helper function to check input width and height for functions {copy, compressed}Tex{Sub}Image. |
| // Generates GL error and returns false if width or height is invalid. |
| bool validateTexFuncDimensions(const char* functionName, TexImageFunctionType, GLenum target, GLint level, GLsizei width, GLsizei height, GLsizei depth); |
| |
| // Helper function to check input parameters for functions {copy}Tex{Sub}Image. |
| // Generates GL error and returns false if parameters are invalid. |
| bool validateTexFuncParameters(const char* functionName, TexImageFunctionType, GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type); |
| |
| enum NullDisposition { |
| NullAllowed, |
| NullNotAllowed, |
| NullNotReachable |
| }; |
| |
| // 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(const char* functionName, TexImageDimension, GLint level, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, DOMArrayBufferView* pixels, NullDisposition, GLuint srcOffset); |
| |
| // Helper function to validate a given texture format is settable as in |
| // you can supply data to texImage2D, or call texImage2D, copyTexImage2D and |
| // copyTexSubImage2D. |
| // Generates GL error and returns false if the format is not settable. |
| bool validateSettableTexFormat(const char* functionName, GLenum format); |
| |
| // Helper function to validate format for CopyTexImage. |
| bool validateCopyTexFormat(const char* functionName, GLenum format); |
| |
| // Helper function for validating compressed texture formats. |
| bool validateCompressedTexFormat(const char* functionName, GLenum format); |
| |
| // Helper function to validate if front/back stencilMask and stencilFunc settings are the same. |
| bool validateStencilSettings(const char* functionName); |
| |
| // Helper function to validate stencil or depth func. |
| bool validateStencilOrDepthFunc(const char* functionName, GLenum); |
| |
| // Helper function for texParameterf and texParameteri. |
| void texParameter(GLenum target, GLenum pname, GLfloat paramf, GLint parami, bool isFloat); |
| |
| // Helper function to print GL errors to console. |
| void printGLErrorToConsole(const String&); |
| |
| // 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 the target for checkFramebufferStatus and validateFramebufferFuncParameters. |
| virtual bool validateFramebufferTarget(GLenum target); |
| |
| // Get the framebuffer bound to given target |
| virtual WebGLFramebuffer* getFramebufferBinding(GLenum target); |
| |
| virtual WebGLFramebuffer* getReadFramebufferBinding(); |
| |
| // Helper function to validate input parameters for framebuffer functions. |
| // Generate GL error if parameters are illegal. |
| bool validateFramebufferFuncParameters(const char* functionName, GLenum target, GLenum attachment); |
| |
| // Helper function to validate blend equation mode. |
| bool validateBlendEquation(const char* functionName, GLenum); |
| |
| // Helper function to validate blend func factors. |
| bool validateBlendFuncFactors(const char* functionName, GLenum src, GLenum dst); |
| |
| // Helper function to validate a GL capability. |
| virtual bool validateCapability(const char* functionName, GLenum); |
| |
| // Helper function to validate input parameters for uniform functions. |
| bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, DOMFloat32Array*, GLsizei mod); |
| bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, DOMInt32Array*, GLsizei mod); |
| bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, void*, GLsizei, GLsizei mod); |
| bool validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation*, GLboolean transpose, DOMFloat32Array*, GLsizei mod); |
| bool validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation*, GLboolean transpose, void*, GLsizei, GLsizei mod); |
| |
| template<typename WTFTypedArray> |
| bool validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, const TypedFlexibleArrayBufferView<WTFTypedArray>& v, GLsizei requiredMinSize) |
| { |
| if (!v.dataMaybeOnStack()) { |
| synthesizeGLError(GL_INVALID_VALUE, functionName, "no array"); |
| return false; |
| } |
| return validateUniformMatrixParameters(functionName, location, false, v.dataMaybeOnStack(), v.length(), requiredMinSize); |
| } |
| |
| // Helper function to validate the target for bufferData and getBufferParameter. |
| virtual bool validateBufferTarget(const char* functionName, GLenum target); |
| |
| // Helper function to validate the target for bufferData. |
| // Return the current bound buffer to target, or 0 if the target is invalid. |
| virtual WebGLBuffer* validateBufferDataTarget(const char* functionName, GLenum target); |
| // Helper function to validate the usage for bufferData. |
| virtual bool validateBufferDataUsage(const char* functionName, GLenum usage); |
| |
| virtual bool validateAndUpdateBufferBindTarget(const char* functionName, GLenum target, WebGLBuffer*); |
| |
| virtual void removeBoundBuffer(WebGLBuffer*); |
| |
| // Helper function for tex{Sub}Image2D to make sure image is ready and wouldn't taint Origin. |
| bool validateHTMLImageElement(const char* functionName, HTMLImageElement*, ExceptionState&); |
| |
| // Helper function for tex{Sub}Image2D to make sure canvas is ready and wouldn't taint Origin. |
| bool validateHTMLCanvasElement(const char* functionName, HTMLCanvasElement*, ExceptionState&); |
| |
| // Helper function for tex{Sub}Image2D to make sure video is ready wouldn't taint Origin. |
| bool validateHTMLVideoElement(const char* functionName, HTMLVideoElement*, ExceptionState&); |
| |
| // Helper function for tex{Sub}Image2D to make sure imagebitmap is ready and wouldn't taint Origin. |
| bool validateImageBitmap(const char* functionName, ImageBitmap*, ExceptionState&); |
| |
| // Helper function to validate drawArrays(Instanced) calls |
| bool validateDrawArrays(const char* functionName); |
| |
| // Helper function to validate drawElements(Instanced) calls |
| bool validateDrawElements(const char* functionName, GLenum type, long long offset); |
| |
| // Helper functions to bufferData() and bufferSubData(). |
| void bufferDataImpl(GLenum target, long long size, const void* data, GLenum usage); |
| void bufferSubDataImpl(GLenum target, long long offset, GLsizeiptr, const void* data); |
| |
| // 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(const char* functionName, WebGLObject*, bool& deleted); |
| |
| void dispatchContextLostEvent(TimerBase*); |
| // Helper for restoration after context lost. |
| void maybeRestoreContext(TimerBase*); |
| |
| enum ConsoleDisplayPreference { |
| DisplayInConsole, |
| DontDisplayInConsole |
| }; |
| |
| // Reports an error to glGetError, sends a message to the JavaScript |
| // console. |
| void synthesizeGLError(GLenum, const char* functionName, const char* description, ConsoleDisplayPreference = DisplayInConsole); |
| void emitGLWarning(const char* function, const char* reason); |
| |
| String ensureNotNull(const String&) const; |
| |
| // Enable or disable stencil test based on user setting and |
| // whether the current FBO has a stencil buffer. |
| void applyStencilTest(); |
| |
| // Helper for enabling or disabling a capability. |
| void enableOrDisable(GLenum capability, bool enable); |
| |
| // Clamp the width and height to GL_MAX_VIEWPORT_DIMS. |
| IntSize clampedCanvasSize() const; |
| |
| // First time called, if EXT_draw_buffers is supported, query the value; otherwise return 0. |
| // Later, return the cached value. |
| GLint maxDrawBuffers(); |
| GLint maxColorAttachments(); |
| |
| void setBackDrawBuffer(GLenum); |
| void setFramebuffer(GLenum, WebGLFramebuffer*); |
| |
| virtual void restoreCurrentFramebuffer(); |
| void restoreCurrentTexture2D(); |
| |
| void findNewMaxNonDefaultTextureUnit(); |
| |
| virtual void renderbufferStorageImpl(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, const char* functionName); |
| |
| friend class WebGLStateRestorer; |
| friend class WebGLRenderingContextEvictionManager; |
| |
| static void activateContext(WebGLRenderingContextBase*); |
| static void deactivateContext(WebGLRenderingContextBase*); |
| static void addToEvictedList(WebGLRenderingContextBase*); |
| static void removeFromEvictedList(WebGLRenderingContextBase*); |
| static void willDestroyContext(WebGLRenderingContextBase*); |
| static void forciblyLoseOldestContext(const String& reason); |
| // Return the least recently used context's position in the active context vector. |
| // If the vector is empty, return the maximum allowed active context number. |
| static WebGLRenderingContextBase* oldestContext(); |
| static WebGLRenderingContextBase* oldestEvictedContext(); |
| |
| ImageBitmap* transferToImageBitmapBase(); |
| |
| // Helper functions for tex(Sub)Image2D && texSubImage3D |
| void texImageHelperDOMArrayBufferView(TexImageFunctionID, GLenum, GLint, GLint, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, GLint, GLint, GLint, DOMArrayBufferView*, NullDisposition, GLuint srcOffset); |
| void texImageHelperImageData(TexImageFunctionID, GLenum, GLint, GLint, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, ImageData*); |
| void texImageHelperHTMLImageElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLImageElement*, ExceptionState&); |
| void texImageHelperHTMLCanvasElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLCanvasElement*, ExceptionState&); |
| void texImageHelperHTMLVideoElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLVideoElement*, ExceptionState&); |
| void texImageHelperImageBitmap(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, ImageBitmap*, ExceptionState&); |
| static const char* getTexImageFunctionName(TexImageFunctionID); |
| |
| private: |
| WebGLRenderingContextBase(HTMLCanvasElement*, OffscreenCanvas*, std::unique_ptr<WebGraphicsContext3DProvider>, const CanvasContextCreationAttributes&, unsigned); |
| static std::unique_ptr<WebGraphicsContext3DProvider> createContextProviderInternal(HTMLCanvasElement*, ScriptState*, const CanvasContextCreationAttributes&, unsigned); |
| void texImageCanvasByGPU(HTMLCanvasElement*, GLuint, GLenum, GLenum, GLint); |
| void texImageBitmapByGPU(ImageBitmap*, GLuint, GLenum, GLenum, GLint, bool); |
| |
| const unsigned m_version; |
| |
| bool isPaintable() const final { return drawingBuffer(); } |
| }; |
| |
| DEFINE_TYPE_CASTS(WebGLRenderingContextBase, CanvasRenderingContext, context, context->is3d(), context.is3d()); |
| |
| } // namespace blink |
| |
| WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::WebGLRenderingContextBase::TextureUnitState); |
| |
| #endif // WebGLRenderingContextBase_h |
