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Diffstat (limited to 'WebKit/chromium/src/WebGraphicsContext3DDefaultImpl.h')
| -rw-r--r-- | WebKit/chromium/src/WebGraphicsContext3DDefaultImpl.h | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/WebKit/chromium/src/WebGraphicsContext3DDefaultImpl.h b/WebKit/chromium/src/WebGraphicsContext3DDefaultImpl.h new file mode 100644 index 0000000..32e3671 --- /dev/null +++ b/WebKit/chromium/src/WebGraphicsContext3DDefaultImpl.h @@ -0,0 +1,383 @@ +/* + * Copyright (C) 2010 Google 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: + * + * * 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 Google Inc. 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 THE COPYRIGHT + * OWNER 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 WebGraphicsContext3DDefaultImpl_h +#define WebGraphicsContext3DDefaultImpl_h + +#if ENABLE(3D_CANVAS) + +#include "GLSLANG/ShaderLang.h" +#include "WebGraphicsContext3D.h" + +#include <wtf/HashMap.h> +#include <wtf/ListHashSet.h> +#include <wtf/OwnPtr.h> + +#if !PLATFORM(CG) +#define FLIP_FRAMEBUFFER_VERTICALLY +#endif +namespace gfx { +class GLContext; +} + +namespace WebKit { + +// The default implementation of WebGL. In Chromium, using this class +// requires the sandbox to be disabled, which is strongly discouraged. +// It is provided for support of test_shell and any Chromium ports +// where an in-renderer WebGL implementation would be helpful. + +class WebGraphicsContext3DDefaultImpl : public WebGraphicsContext3D { +public: + WebGraphicsContext3DDefaultImpl(); + virtual ~WebGraphicsContext3DDefaultImpl(); + + //---------------------------------------------------------------------- + // WebGraphicsContext3D methods + virtual bool initialize(WebGraphicsContext3D::Attributes attributes, WebView*, bool); + virtual bool makeContextCurrent(); + + virtual int width(); + virtual int height(); + + virtual int sizeInBytes(int type); + + virtual bool isGLES2Compliant(); + + virtual void reshape(int width, int height); + + virtual bool readBackFramebuffer(unsigned char* pixels, size_t bufferSize); + + virtual unsigned int getPlatformTextureId(); + virtual void prepareTexture(); + + virtual void synthesizeGLError(unsigned long error); + virtual void* mapBufferSubDataCHROMIUM(unsigned target, int offset, int size, unsigned access); + virtual void unmapBufferSubDataCHROMIUM(const void*); + virtual void* mapTexSubImage2DCHROMIUM(unsigned target, int level, int xoffset, int yoffset, int width, int height, unsigned format, unsigned type, unsigned access); + virtual void unmapTexSubImage2DCHROMIUM(const void*); + virtual void copyTextureToParentTextureCHROMIUM(unsigned texture, unsigned parentTexture); + + virtual void activeTexture(unsigned long texture); + virtual void attachShader(WebGLId program, WebGLId shader); + virtual void bindAttribLocation(WebGLId program, unsigned long index, const char* name); + virtual void bindBuffer(unsigned long target, WebGLId buffer); + virtual void bindFramebuffer(unsigned long target, WebGLId framebuffer); + virtual void bindRenderbuffer(unsigned long target, WebGLId renderbuffer); + virtual void bindTexture(unsigned long target, WebGLId texture); + virtual void blendColor(double red, double green, double blue, double alpha); + virtual void blendEquation(unsigned long mode); + virtual void blendEquationSeparate(unsigned long modeRGB, unsigned long modeAlpha); + virtual void blendFunc(unsigned long sfactor, unsigned long dfactor); + virtual void blendFuncSeparate(unsigned long srcRGB, unsigned long dstRGB, unsigned long srcAlpha, unsigned long dstAlpha); + + virtual void bufferData(unsigned long target, int size, const void* data, unsigned long usage); + virtual void bufferSubData(unsigned long target, long offset, int size, const void* data); + + virtual unsigned long checkFramebufferStatus(unsigned long target); + virtual void clear(unsigned long mask); + virtual void clearColor(double red, double green, double blue, double alpha); + virtual void clearDepth(double depth); + virtual void clearStencil(long s); + virtual void colorMask(bool red, bool green, bool blue, bool alpha); + virtual void compileShader(WebGLId shader); + + virtual void copyTexImage2D(unsigned long target, long level, unsigned long internalformat, long x, long y, unsigned long width, unsigned long height, long border); + virtual void copyTexSubImage2D(unsigned long target, long level, long xoffset, long yoffset, long x, long y, unsigned long width, unsigned long height); + virtual void cullFace(unsigned long mode); + virtual void depthFunc(unsigned long func); + virtual void depthMask(bool flag); + virtual void depthRange(double zNear, double zFar); + virtual void detachShader(WebGLId program, WebGLId shader); + virtual void disable(unsigned long cap); + virtual void disableVertexAttribArray(unsigned long index); + virtual void drawArrays(unsigned long mode, long first, long count); + virtual void drawElements(unsigned long mode, unsigned long count, unsigned long type, long offset); + + virtual void enable(unsigned long cap); + virtual void enableVertexAttribArray(unsigned long index); + virtual void finish(); + virtual void flush(); + virtual void framebufferRenderbuffer(unsigned long target, unsigned long attachment, unsigned long renderbuffertarget, WebGLId renderbuffer); + virtual void framebufferTexture2D(unsigned long target, unsigned long attachment, unsigned long textarget, WebGLId texture, long level); + virtual void frontFace(unsigned long mode); + virtual void generateMipmap(unsigned long target); + + virtual bool getActiveAttrib(WebGLId program, unsigned long index, ActiveInfo&); + virtual bool getActiveUniform(WebGLId program, unsigned long index, ActiveInfo&); + + virtual void getAttachedShaders(WebGLId program, int maxCount, int* count, unsigned int* shaders); + + virtual int getAttribLocation(WebGLId program, const char* name); + + virtual void getBooleanv(unsigned long pname, unsigned char* value); + + virtual void getBufferParameteriv(unsigned long target, unsigned long pname, int* value); + + virtual Attributes getContextAttributes(); + + virtual unsigned long getError(); + + virtual bool isContextLost(); + + virtual void getFloatv(unsigned long pname, float* value); + + virtual void getFramebufferAttachmentParameteriv(unsigned long target, unsigned long attachment, unsigned long pname, int* value); + + virtual void getIntegerv(unsigned long pname, int* value); + + virtual void getProgramiv(WebGLId program, unsigned long pname, int* value); + + virtual WebString getProgramInfoLog(WebGLId program); + + virtual void getRenderbufferParameteriv(unsigned long target, unsigned long pname, int* value); + + virtual void getShaderiv(WebGLId shader, unsigned long pname, int* value); + + virtual WebString getShaderInfoLog(WebGLId shader); + + // TBD + // void glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision); + + virtual WebString getShaderSource(WebGLId shader); + virtual WebString getString(unsigned long name); + + virtual void getTexParameterfv(unsigned long target, unsigned long pname, float* value); + virtual void getTexParameteriv(unsigned long target, unsigned long pname, int* value); + + virtual void getUniformfv(WebGLId program, long location, float* value); + virtual void getUniformiv(WebGLId program, long location, int* value); + + virtual long getUniformLocation(WebGLId program, const char* name); + + virtual void getVertexAttribfv(unsigned long index, unsigned long pname, float* value); + virtual void getVertexAttribiv(unsigned long index, unsigned long pname, int* value); + + virtual long getVertexAttribOffset(unsigned long index, unsigned long pname); + + virtual void hint(unsigned long target, unsigned long mode); + virtual bool isBuffer(WebGLId buffer); + virtual bool isEnabled(unsigned long cap); + virtual bool isFramebuffer(WebGLId framebuffer); + virtual bool isProgram(WebGLId program); + virtual bool isRenderbuffer(WebGLId renderbuffer); + virtual bool isShader(WebGLId shader); + virtual bool isTexture(WebGLId texture); + virtual void lineWidth(double); + virtual void linkProgram(WebGLId program); + virtual void pixelStorei(unsigned long pname, long param); + virtual void polygonOffset(double factor, double units); + + virtual void readPixels(long x, long y, unsigned long width, unsigned long height, unsigned long format, unsigned long type, void* pixels); + + virtual void releaseShaderCompiler(); + virtual void renderbufferStorage(unsigned long target, unsigned long internalformat, unsigned long width, unsigned long height); + virtual void sampleCoverage(double value, bool invert); + virtual void scissor(long x, long y, unsigned long width, unsigned long height); + virtual void shaderSource(WebGLId shader, const char* string); + virtual void stencilFunc(unsigned long func, long ref, unsigned long mask); + virtual void stencilFuncSeparate(unsigned long face, unsigned long func, long ref, unsigned long mask); + virtual void stencilMask(unsigned long mask); + virtual void stencilMaskSeparate(unsigned long face, unsigned long mask); + virtual void stencilOp(unsigned long fail, unsigned long zfail, unsigned long zpass); + virtual void stencilOpSeparate(unsigned long face, unsigned long fail, unsigned long zfail, unsigned long zpass); + + virtual void texImage2D(unsigned target, unsigned level, unsigned internalformat, unsigned width, unsigned height, unsigned border, unsigned format, unsigned type, const void* pixels); + + virtual void texParameterf(unsigned target, unsigned pname, float param); + virtual void texParameteri(unsigned target, unsigned pname, int param); + + virtual void texSubImage2D(unsigned target, unsigned level, unsigned xoffset, unsigned yoffset, unsigned width, unsigned height, unsigned format, unsigned type, const void* pixels); + + virtual void uniform1f(long location, float x); + virtual void uniform1fv(long location, int count, float* v); + virtual void uniform1i(long location, int x); + virtual void uniform1iv(long location, int count, int* v); + virtual void uniform2f(long location, float x, float y); + virtual void uniform2fv(long location, int count, float* v); + virtual void uniform2i(long location, int x, int y); + virtual void uniform2iv(long location, int count, int* v); + virtual void uniform3f(long location, float x, float y, float z); + virtual void uniform3fv(long location, int count, float* v); + virtual void uniform3i(long location, int x, int y, int z); + virtual void uniform3iv(long location, int count, int* v); + virtual void uniform4f(long location, float x, float y, float z, float w); + virtual void uniform4fv(long location, int count, float* v); + virtual void uniform4i(long location, int x, int y, int z, int w); + virtual void uniform4iv(long location, int count, int* v); + virtual void uniformMatrix2fv(long location, int count, bool transpose, const float* value); + virtual void uniformMatrix3fv(long location, int count, bool transpose, const float* value); + virtual void uniformMatrix4fv(long location, int count, bool transpose, const float* value); + + virtual void useProgram(WebGLId program); + virtual void validateProgram(WebGLId program); + + virtual void vertexAttrib1f(unsigned long indx, float x); + virtual void vertexAttrib1fv(unsigned long indx, const float* values); + virtual void vertexAttrib2f(unsigned long indx, float x, float y); + virtual void vertexAttrib2fv(unsigned long indx, const float* values); + virtual void vertexAttrib3f(unsigned long indx, float x, float y, float z); + virtual void vertexAttrib3fv(unsigned long indx, const float* values); + virtual void vertexAttrib4f(unsigned long indx, float x, float y, float z, float w); + virtual void vertexAttrib4fv(unsigned long indx, const float* values); + virtual void vertexAttribPointer(unsigned long indx, int size, int type, bool normalized, + unsigned long stride, unsigned long offset); + + virtual void viewport(long x, long y, unsigned long width, unsigned long height); + + // Support for buffer creation and deletion + virtual unsigned createBuffer(); + virtual unsigned createFramebuffer(); + virtual unsigned createProgram(); + virtual unsigned createRenderbuffer(); + virtual unsigned createShader(unsigned long); + virtual unsigned createTexture(); + + virtual void deleteBuffer(unsigned); + virtual void deleteFramebuffer(unsigned); + virtual void deleteProgram(unsigned); + virtual void deleteRenderbuffer(unsigned); + virtual void deleteShader(unsigned); + virtual void deleteTexture(unsigned); + +private: + WebGraphicsContext3D::Attributes m_attributes; + bool m_initialized; + bool m_renderDirectlyToWebView; + bool m_isGLES2; + bool m_haveEXTFramebufferObject; + bool m_haveEXTFramebufferMultisample; + bool m_haveANGLEFramebufferMultisample; + + unsigned int m_texture; + unsigned int m_fbo; + unsigned int m_depthStencilBuffer; + unsigned int m_cachedWidth, m_cachedHeight; + + // For multisampling + unsigned int m_multisampleFBO; + unsigned int m_multisampleDepthStencilBuffer; + unsigned int m_multisampleColorBuffer; + + // For tracking which FBO is bound + unsigned int m_boundFBO; + + // For tracking which texture is bound + unsigned int m_boundTexture; + + // FBO used for copying child texture to parent texture. + unsigned m_copyTextureToParentTextureFBO; + +#ifdef FLIP_FRAMEBUFFER_VERTICALLY + unsigned char* m_scanline; + void flipVertically(unsigned char* framebuffer, + unsigned int width, + unsigned int height); +#endif + + // Take into account the user's requested context creation attributes, in + // particular stencil and antialias, and determine which could or could + // not be honored based on the capabilities of the OpenGL implementation. + void validateAttributes(); + + // Resolve the given rectangle of the multisampled framebuffer if necessary. + void resolveMultisampledFramebuffer(unsigned x, unsigned y, unsigned width, unsigned height); + + // Note: we aren't currently using this information, but we will + // need to in order to verify that all enabled vertex arrays have + // a valid buffer bound -- to avoid crashes on certain cards. + unsigned int m_boundArrayBuffer; + struct VertexAttribPointerState { + VertexAttribPointerState(); + + bool enabled; + unsigned long buffer; + unsigned long indx; + int size; + int type; + bool normalized; + unsigned long stride; + unsigned long offset; + }; + + enum { + NumTrackedPointerStates = 2 + }; + VertexAttribPointerState m_vertexAttribPointerState[NumTrackedPointerStates]; + + // Errors raised by synthesizeGLError(). + ListHashSet<unsigned long> m_syntheticErrors; + + OwnPtr<gfx::GLContext> m_glContext; + + // ANGLE related. + struct ShaderSourceEntry { + ShaderSourceEntry(unsigned long shaderType) + : type(shaderType) + , source(0) + , log(0) + , translatedSource(0) + , isValid(false) + { + } + + ~ShaderSourceEntry() + { + if (source) + fastFree(source); + if (log) + fastFree(log); + if (translatedSource) + fastFree(translatedSource); + } + + unsigned long type; + char* source; + char* log; + char* translatedSource; + bool isValid; + }; + + bool angleCreateCompilers(); + void angleDestroyCompilers(); + bool angleValidateShaderSource(ShaderSourceEntry& entry); + + typedef HashMap<WebGLId, ShaderSourceEntry*> ShaderSourceMap; + ShaderSourceMap m_shaderSourceMap; + + ShHandle m_fragmentCompiler; + ShHandle m_vertexCompiler; +}; + +} // namespace WebKit + +#endif // ENABLE(3D_CANVAS) + +#endif |