The Tor Browser: content/canvas/src/WebGLContextVertices.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLContextVertices.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLContextVertices.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "WebGLContext.h"
 #include "GLContext.h"
 #include "mozilla/CheckedInt.h"
 #include "WebGLBuffer.h"
 #include "WebGLFramebuffer.h"
 #include "WebGLProgram.h"
 #include "WebGLRenderbuffer.h"
 #include "WebGLShader.h"
 #include "WebGLTexture.h"
 #include "WebGLUniformInfo.h"
 #include "WebGLVertexArray.h"
 #include "WebGLVertexAttribData.h"
 using namespace mozilla;
 using namespace dom;
 void
 WebGLContext::VertexAttrib1f(GLuint index, GLfloat x0)
 {
     if (IsContextLost())
         return;
     MakeContextCurrent();
     if (index) {
         gl->fVertexAttrib1f(index, x0);
     } else {
         mVertexAttrib0Vector[0] = x0;
         mVertexAttrib0Vector[1] = 0;
         mVertexAttrib0Vector[2] = 0;
         mVertexAttrib0Vector[3] = 1;
         if (gl->IsGLES())
             gl->fVertexAttrib1f(index, x0);
     }
 }
 void
 WebGLContext::VertexAttrib2f(GLuint index, GLfloat x0, GLfloat x1)
 {
     if (IsContextLost())
         return;
     MakeContextCurrent();
     if (index) {
         gl->fVertexAttrib2f(index, x0, x1);
     } else {
         mVertexAttrib0Vector[0] = x0;
         mVertexAttrib0Vector[1] = x1;
         mVertexAttrib0Vector[2] = 0;
         mVertexAttrib0Vector[3] = 1;
         if (gl->IsGLES())
             gl->fVertexAttrib2f(index, x0, x1);
     }
 }
 void
 WebGLContext::VertexAttrib3f(GLuint index, GLfloat x0, GLfloat x1, GLfloat x2)
 {
     if (IsContextLost())
         return;
     MakeContextCurrent();
     if (index) {
         gl->fVertexAttrib3f(index, x0, x1, x2);
     } else {
         mVertexAttrib0Vector[0] = x0;
         mVertexAttrib0Vector[1] = x1;
         mVertexAttrib0Vector[2] = x2;
         mVertexAttrib0Vector[3] = 1;
         if (gl->IsGLES())
             gl->fVertexAttrib3f(index, x0, x1, x2);
     }
 }
 void
 WebGLContext::VertexAttrib4f(GLuint index, GLfloat x0, GLfloat x1,
                              GLfloat x2, GLfloat x3)
 {
     if (IsContextLost())
         return;
     MakeContextCurrent();
     if (index) {
         gl->fVertexAttrib4f(index, x0, x1, x2, x3);
     } else {
         mVertexAttrib0Vector[0] = x0;
         mVertexAttrib0Vector[1] = x1;
         mVertexAttrib0Vector[2] = x2;
         mVertexAttrib0Vector[3] = x3;
         if (gl->IsGLES())
             gl->fVertexAttrib4f(index, x0, x1, x2, x3);
     }
 }
 void
 WebGLContext::VertexAttrib1fv_base(GLuint idx, uint32_t arrayLength,
                                    const GLfloat* ptr)
 {
     if (!ValidateAttribArraySetter("VertexAttrib1fv", 1, arrayLength))
         return;
     MakeContextCurrent();
     if (idx) {
         gl->fVertexAttrib1fv(idx, ptr);
     } else {
         mVertexAttrib0Vector[0] = ptr[0];
         mVertexAttrib0Vector[1] = GLfloat(0);
         mVertexAttrib0Vector[2] = GLfloat(0);
         mVertexAttrib0Vector[3] = GLfloat(1);
         if (gl->IsGLES())
             gl->fVertexAttrib1fv(idx, ptr);
     }
 }
 void
 WebGLContext::VertexAttrib2fv_base(GLuint idx, uint32_t arrayLength,
                                    const GLfloat* ptr)
 {
     if (!ValidateAttribArraySetter("VertexAttrib2fv", 2, arrayLength))
         return;
     MakeContextCurrent();
     if (idx) {
         gl->fVertexAttrib2fv(idx, ptr);
     } else {
         mVertexAttrib0Vector[0] = ptr[0];
         mVertexAttrib0Vector[1] = ptr[1];
         mVertexAttrib0Vector[2] = GLfloat(0);
         mVertexAttrib0Vector[3] = GLfloat(1);
         if (gl->IsGLES())
             gl->fVertexAttrib2fv(idx, ptr);
     }
 }
 void
 WebGLContext::VertexAttrib3fv_base(GLuint idx, uint32_t arrayLength,
                                    const GLfloat* ptr)
 {
     if (!ValidateAttribArraySetter("VertexAttrib3fv", 3, arrayLength))
         return;
     MakeContextCurrent();
     if (idx) {
         gl->fVertexAttrib3fv(idx, ptr);
     } else {
         mVertexAttrib0Vector[0] = ptr[0];
         mVertexAttrib0Vector[1] = ptr[1];
         mVertexAttrib0Vector[2] = ptr[2];
         mVertexAttrib0Vector[3] = GLfloat(1);
         if (gl->IsGLES())
             gl->fVertexAttrib3fv(idx, ptr);
     }
 }
 void
 WebGLContext::VertexAttrib4fv_base(GLuint idx, uint32_t arrayLength,
                                    const GLfloat* ptr)
 {
     if (!ValidateAttribArraySetter("VertexAttrib4fv", 4, arrayLength))
         return;
     MakeContextCurrent();
     if (idx) {
         gl->fVertexAttrib4fv(idx, ptr);
     } else {
         mVertexAttrib0Vector[0] = ptr[0];
         mVertexAttrib0Vector[1] = ptr[1];
         mVertexAttrib0Vector[2] = ptr[2];
         mVertexAttrib0Vector[3] = ptr[3];
         if (gl->IsGLES())
             gl->fVertexAttrib4fv(idx, ptr);
     }
 }
 void
 WebGLContext::EnableVertexAttribArray(GLuint index)
 {
     if (IsContextLost())
         return;
     if (!ValidateAttribIndex(index, "enableVertexAttribArray"))
         return;
     MakeContextCurrent();
     InvalidateBufferFetching();
     gl->fEnableVertexAttribArray(index);
     MOZ_ASSERT(mBoundVertexArray->HasAttrib(index)); // should have been validated earlier
     mBoundVertexArray->mAttribs[index].enabled = true;
 }
 void
 WebGLContext::DisableVertexAttribArray(GLuint index)
 {
     if (IsContextLost())
         return;
     if (!ValidateAttribIndex(index, "disableVertexAttribArray"))
         return;
     MakeContextCurrent();
     InvalidateBufferFetching();
     if (index || gl->IsGLES())
         gl->fDisableVertexAttribArray(index);
     MOZ_ASSERT(mBoundVertexArray->HasAttrib(index)); // should have been validated earlier
     mBoundVertexArray->mAttribs[index].enabled = false;
 }
 JS::Value
 WebGLContext::GetVertexAttrib(JSContext* cx, GLuint index, GLenum pname,
                               ErrorResult& rv)
 {
     if (IsContextLost())
         return JS::NullValue();
     if (!ValidateAttribIndex(index, "getVertexAttrib"))
         return JS::NullValue();
     MakeContextCurrent();
     switch (pname) {
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
         {
             return WebGLObjectAsJSValue(cx, mBoundVertexArray->mAttribs[index].buf.get(), rv);
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE:
         {
             return JS::Int32Value(mBoundVertexArray->mAttribs[index].stride);
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE:
         {
             if (!ValidateAttribIndex(index, "getVertexAttrib"))
                 return JS::NullValue();
             if (!mBoundVertexArray->mAttribs[index].enabled)
                 return JS::Int32Value(4);
             // Don't break; fall through.
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE:
         {
             GLint i = 0;
             gl->fGetVertexAttribiv(index, pname, &i);
             if (pname == LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE)
                 return JS::Int32Value(i);
             MOZ_ASSERT(pname == LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE);
             return JS::NumberValue(uint32_t(i));
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
         {
             if (IsExtensionEnabled(WebGLExtensionID::ANGLE_instanced_arrays))
             {
                 return JS::Int32Value(mBoundVertexArray->mAttribs[index].divisor);
             }
             break;
         }
         case LOCAL_GL_CURRENT_VERTEX_ATTRIB:
         {
             GLfloat vec[4] = {0, 0, 0, 1};
             if (index) {
                 gl->fGetVertexAttribfv(index, LOCAL_GL_CURRENT_VERTEX_ATTRIB, &vec[0]);
             } else {
                 vec[0] = mVertexAttrib0Vector[0];
                 vec[1] = mVertexAttrib0Vector[1];
                 vec[2] = mVertexAttrib0Vector[2];
                 vec[3] = mVertexAttrib0Vector[3];
             }
             JSObject* obj = Float32Array::Create(cx, this, 4, vec);
             if (!obj) {
                 rv.Throw(NS_ERROR_OUT_OF_MEMORY);
             }
             return JS::ObjectOrNullValue(obj);
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED:
         {
             return JS::BooleanValue(mBoundVertexArray->mAttribs[index].enabled);
         }
         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
         {
             return JS::BooleanValue(mBoundVertexArray->mAttribs[index].normalized);
         }
         default:
             break;
     }
     ErrorInvalidEnumInfo("getVertexAttrib: parameter", pname);
     return JS::NullValue();
 }
 WebGLsizeiptr
 WebGLContext::GetVertexAttribOffset(GLuint index, GLenum pname)
 {
     if (IsContextLost())
         return 0;
     if (!ValidateAttribIndex(index, "getVertexAttribOffset"))
         return 0;
     if (pname != LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER) {
         ErrorInvalidEnum("getVertexAttribOffset: bad parameter");
         return 0;
     }
     return mBoundVertexArray->mAttribs[index].byteOffset;
 }
 void
 WebGLContext::VertexAttribPointer(GLuint index, GLint size, GLenum type,
                                   WebGLboolean normalized, GLsizei stride,
                                   WebGLintptr byteOffset)
 {
     if (IsContextLost())
         return;
     if (mBoundArrayBuffer == nullptr)
         return ErrorInvalidOperation("vertexAttribPointer: must have valid GL_ARRAY_BUFFER binding");
     GLsizei requiredAlignment = 1;
     switch (type) {
         case LOCAL_GL_BYTE:
         case LOCAL_GL_UNSIGNED_BYTE:
             requiredAlignment = 1;
             break;
         case LOCAL_GL_SHORT:
         case LOCAL_GL_UNSIGNED_SHORT:
             requiredAlignment = 2;
             break;
             // XXX case LOCAL_GL_FIXED:
         case LOCAL_GL_FLOAT:
             requiredAlignment = 4;
             break;
         default:
             return ErrorInvalidEnumInfo("vertexAttribPointer: type", type);
     }
     // requiredAlignment should always be a power of two.
     GLsizei requiredAlignmentMask = requiredAlignment - 1;
     if (!ValidateAttribIndex(index, "vertexAttribPointer")) {
         return;
     }
     if (size < 1 || size > 4)
         return ErrorInvalidValue("vertexAttribPointer: invalid element size");
     if (stride < 0 || stride > 255) // see WebGL spec section 6.6 "Vertex Attribute Data Stride"
         return ErrorInvalidValue("vertexAttribPointer: negative or too large stride");
     if (byteOffset < 0)
         return ErrorInvalidValue("vertexAttribPointer: negative offset");
     if (stride & requiredAlignmentMask) {
         return ErrorInvalidOperation("vertexAttribPointer: stride doesn't satisfy the alignment "
                                      "requirement of given type");
     }
     if (byteOffset & requiredAlignmentMask) {
         return ErrorInvalidOperation("vertexAttribPointer: byteOffset doesn't satisfy the alignment "
                                      "requirement of given type");
     }
     InvalidateBufferFetching();
     /* XXX make work with bufferSubData & heterogeneous types
      if (type != mBoundArrayBuffer->GLType())
      return ErrorInvalidOperation("vertexAttribPointer: type must match bound VBO type: %d != %d", type, mBoundArrayBuffer->GLType());
      */
     WebGLVertexAttribData &vd = mBoundVertexArray->mAttribs[index];
     vd.buf = mBoundArrayBuffer;
     vd.stride = stride;
     vd.size = size;
     vd.byteOffset = byteOffset;
     vd.type = type;
     vd.normalized = normalized;
     MakeContextCurrent();
     gl->fVertexAttribPointer(index, size, type, normalized,
                              stride,
                              reinterpret_cast<void*>(byteOffset));
 }
 void
 WebGLContext::VertexAttribDivisor(GLuint index, GLuint divisor)
 {
     if (IsContextLost())
         return;
     if (!ValidateAttribIndex(index, "vertexAttribDivisor")) {
         return;
     }
     WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
     vd.divisor = divisor;
     InvalidateBufferFetching();
     MakeContextCurrent();
     gl->fVertexAttribDivisor(index, divisor);
 }

The Tor Browser / annotate

content/canvas/src/WebGLContextVertices.cpp@6474c204b198 (annotated)

content/canvas/src/WebGLContextVertices.cpp