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

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

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "WebGLContext.h"

     8 #include "GLContext.h"

     9 #include "mozilla/CheckedInt.h"

    10 #include "WebGLBuffer.h"

    11 #include "WebGLFramebuffer.h"

    12 #include "WebGLProgram.h"

    13 #include "WebGLRenderbuffer.h"

    14 #include "WebGLShader.h"

    15 #include "WebGLTexture.h"

    16 #include "WebGLUniformInfo.h"

    17 #include "WebGLVertexArray.h"

    18 #include "WebGLVertexAttribData.h"

    20 using namespace mozilla;

    21 using namespace dom;

    23 void

    24 WebGLContext::VertexAttrib1f(GLuint index, GLfloat x0)

    25 {

    26     if (IsContextLost())

    27         return;

    29     MakeContextCurrent();

    31     if (index) {

    32         gl->fVertexAttrib1f(index, x0);

    33     } else {

    34         mVertexAttrib0Vector[0] = x0;

    35         mVertexAttrib0Vector[1] = 0;

    36         mVertexAttrib0Vector[2] = 0;

    37         mVertexAttrib0Vector[3] = 1;

    38         if (gl->IsGLES())

    39             gl->fVertexAttrib1f(index, x0);

    40     }

    41 }

    43 void

    44 WebGLContext::VertexAttrib2f(GLuint index, GLfloat x0, GLfloat x1)

    45 {

    46     if (IsContextLost())

    47         return;

    49     MakeContextCurrent();

    51     if (index) {

    52         gl->fVertexAttrib2f(index, x0, x1);

    53     } else {

    54         mVertexAttrib0Vector[0] = x0;

    55         mVertexAttrib0Vector[1] = x1;

    56         mVertexAttrib0Vector[2] = 0;

    57         mVertexAttrib0Vector[3] = 1;

    58         if (gl->IsGLES())

    59             gl->fVertexAttrib2f(index, x0, x1);

    60     }

    61 }

    63 void

    64 WebGLContext::VertexAttrib3f(GLuint index, GLfloat x0, GLfloat x1, GLfloat x2)

    65 {

    66     if (IsContextLost())

    67         return;

    69     MakeContextCurrent();

    71     if (index) {

    72         gl->fVertexAttrib3f(index, x0, x1, x2);

    73     } else {

    74         mVertexAttrib0Vector[0] = x0;

    75         mVertexAttrib0Vector[1] = x1;

    76         mVertexAttrib0Vector[2] = x2;

    77         mVertexAttrib0Vector[3] = 1;

    78         if (gl->IsGLES())

    79             gl->fVertexAttrib3f(index, x0, x1, x2);

    80     }

    81 }

    83 void

    84 WebGLContext::VertexAttrib4f(GLuint index, GLfloat x0, GLfloat x1,

    85                              GLfloat x2, GLfloat x3)

    86 {

    87     if (IsContextLost())

    88         return;

    90     MakeContextCurrent();

    92     if (index) {

    93         gl->fVertexAttrib4f(index, x0, x1, x2, x3);

    94     } else {

    95         mVertexAttrib0Vector[0] = x0;

    96         mVertexAttrib0Vector[1] = x1;

    97         mVertexAttrib0Vector[2] = x2;

    98         mVertexAttrib0Vector[3] = x3;

    99         if (gl->IsGLES())

   100             gl->fVertexAttrib4f(index, x0, x1, x2, x3);

   101     }

   102 }

   105 void

   106 WebGLContext::VertexAttrib1fv_base(GLuint idx, uint32_t arrayLength,

   107                                    const GLfloat* ptr)

   108 {

   109     if (!ValidateAttribArraySetter("VertexAttrib1fv", 1, arrayLength))

   110         return;

   112     MakeContextCurrent();

   113     if (idx) {

   114         gl->fVertexAttrib1fv(idx, ptr);

   115     } else {

   116         mVertexAttrib0Vector[0] = ptr[0];

   117         mVertexAttrib0Vector[1] = GLfloat(0);

   118         mVertexAttrib0Vector[2] = GLfloat(0);

   119         mVertexAttrib0Vector[3] = GLfloat(1);

   120         if (gl->IsGLES())

   121             gl->fVertexAttrib1fv(idx, ptr);

   122     }

   123 }

   125 void

   126 WebGLContext::VertexAttrib2fv_base(GLuint idx, uint32_t arrayLength,

   127                                    const GLfloat* ptr)

   128 {

   129     if (!ValidateAttribArraySetter("VertexAttrib2fv", 2, arrayLength))

   130         return;

   132     MakeContextCurrent();

   133     if (idx) {

   134         gl->fVertexAttrib2fv(idx, ptr);

   135     } else {

   136         mVertexAttrib0Vector[0] = ptr[0];

   137         mVertexAttrib0Vector[1] = ptr[1];

   138         mVertexAttrib0Vector[2] = GLfloat(0);

   139         mVertexAttrib0Vector[3] = GLfloat(1);

   140         if (gl->IsGLES())

   141             gl->fVertexAttrib2fv(idx, ptr);

   142     }

   143 }

   145 void

   146 WebGLContext::VertexAttrib3fv_base(GLuint idx, uint32_t arrayLength,

   147                                    const GLfloat* ptr)

   148 {

   149     if (!ValidateAttribArraySetter("VertexAttrib3fv", 3, arrayLength))

   150         return;

   152     MakeContextCurrent();

   153     if (idx) {

   154         gl->fVertexAttrib3fv(idx, ptr);

   155     } else {

   156         mVertexAttrib0Vector[0] = ptr[0];

   157         mVertexAttrib0Vector[1] = ptr[1];

   158         mVertexAttrib0Vector[2] = ptr[2];

   159         mVertexAttrib0Vector[3] = GLfloat(1);

   160         if (gl->IsGLES())

   161             gl->fVertexAttrib3fv(idx, ptr);

   162     }

   163 }

   165 void

   166 WebGLContext::VertexAttrib4fv_base(GLuint idx, uint32_t arrayLength,

   167                                    const GLfloat* ptr)

   168 {

   169     if (!ValidateAttribArraySetter("VertexAttrib4fv", 4, arrayLength))

   170         return;

   172     MakeContextCurrent();

   173     if (idx) {

   174         gl->fVertexAttrib4fv(idx, ptr);

   175     } else {

   176         mVertexAttrib0Vector[0] = ptr[0];

   177         mVertexAttrib0Vector[1] = ptr[1];

   178         mVertexAttrib0Vector[2] = ptr[2];

   179         mVertexAttrib0Vector[3] = ptr[3];

   180         if (gl->IsGLES())

   181             gl->fVertexAttrib4fv(idx, ptr);

   182     }

   183 }

   185 void

   186 WebGLContext::EnableVertexAttribArray(GLuint index)

   187 {

   188     if (IsContextLost())

   189         return;

   191     if (!ValidateAttribIndex(index, "enableVertexAttribArray"))

   192         return;

   194     MakeContextCurrent();

   195     InvalidateBufferFetching();

   197     gl->fEnableVertexAttribArray(index);

   198     MOZ_ASSERT(mBoundVertexArray->HasAttrib(index)); // should have been validated earlier

   199     mBoundVertexArray->mAttribs[index].enabled = true;

   200 }

   202 void

   203 WebGLContext::DisableVertexAttribArray(GLuint index)

   204 {

   205     if (IsContextLost())

   206         return;

   208     if (!ValidateAttribIndex(index, "disableVertexAttribArray"))

   209         return;

   211     MakeContextCurrent();

   212     InvalidateBufferFetching();

   214     if (index || gl->IsGLES())

   215         gl->fDisableVertexAttribArray(index);

   217     MOZ_ASSERT(mBoundVertexArray->HasAttrib(index)); // should have been validated earlier

   218     mBoundVertexArray->mAttribs[index].enabled = false;

   219 }

   222 JS::Value

   223 WebGLContext::GetVertexAttrib(JSContext* cx, GLuint index, GLenum pname,

   224                               ErrorResult& rv)

   225 {

   226     if (IsContextLost())

   227         return JS::NullValue();

   229     if (!ValidateAttribIndex(index, "getVertexAttrib"))

   230         return JS::NullValue();

   232     MakeContextCurrent();

   234     switch (pname) {

   235         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:

   236         {

   237             return WebGLObjectAsJSValue(cx, mBoundVertexArray->mAttribs[index].buf.get(), rv);

   238         }

   240         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE:

   241         {

   242             return JS::Int32Value(mBoundVertexArray->mAttribs[index].stride);

   243         }

   245         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE:

   246         {

   247             if (!ValidateAttribIndex(index, "getVertexAttrib"))

   248                 return JS::NullValue();

   250             if (!mBoundVertexArray->mAttribs[index].enabled)

   251                 return JS::Int32Value(4);

   253             // Don't break; fall through.

   254         }

   255         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE:

   256         {

   257             GLint i = 0;

   258             gl->fGetVertexAttribiv(index, pname, &i);

   259             if (pname == LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE)

   260                 return JS::Int32Value(i);

   261             MOZ_ASSERT(pname == LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE);

   262             return JS::NumberValue(uint32_t(i));

   263         }

   265         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR:

   266         {

   267             if (IsExtensionEnabled(WebGLExtensionID::ANGLE_instanced_arrays))

   268             {

   269                 return JS::Int32Value(mBoundVertexArray->mAttribs[index].divisor);

   270             }

   271             break;

   272         }

   274         case LOCAL_GL_CURRENT_VERTEX_ATTRIB:

   275         {

   276             GLfloat vec[4] = {0, 0, 0, 1};

   277             if (index) {

   278                 gl->fGetVertexAttribfv(index, LOCAL_GL_CURRENT_VERTEX_ATTRIB, &vec[0]);

   279             } else {

   280                 vec[0] = mVertexAttrib0Vector[0];

   281                 vec[1] = mVertexAttrib0Vector[1];

   282                 vec[2] = mVertexAttrib0Vector[2];

   283                 vec[3] = mVertexAttrib0Vector[3];

   284             }

   285             JSObject* obj = Float32Array::Create(cx, this, 4, vec);

   286             if (!obj) {

   287                 rv.Throw(NS_ERROR_OUT_OF_MEMORY);

   288             }

   289             return JS::ObjectOrNullValue(obj);

   290         }

   292         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED:

   293         {

   294             return JS::BooleanValue(mBoundVertexArray->mAttribs[index].enabled);

   295         }

   297         case LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:

   298         {

   299             return JS::BooleanValue(mBoundVertexArray->mAttribs[index].normalized);

   300         }

   302         default:

   303             break;

   304     }

   306     ErrorInvalidEnumInfo("getVertexAttrib: parameter", pname);

   308     return JS::NullValue();

   309 }

   311 WebGLsizeiptr

   312 WebGLContext::GetVertexAttribOffset(GLuint index, GLenum pname)

   313 {

   314     if (IsContextLost())

   315         return 0;

   317     if (!ValidateAttribIndex(index, "getVertexAttribOffset"))

   318         return 0;

   320     if (pname != LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER) {

   321         ErrorInvalidEnum("getVertexAttribOffset: bad parameter");

   322         return 0;

   323     }

   325     return mBoundVertexArray->mAttribs[index].byteOffset;

   326 }

   328 void

   329 WebGLContext::VertexAttribPointer(GLuint index, GLint size, GLenum type,

   330                                   WebGLboolean normalized, GLsizei stride,

   331                                   WebGLintptr byteOffset)

   332 {

   333     if (IsContextLost())

   334         return;

   336     if (mBoundArrayBuffer == nullptr)

   337         return ErrorInvalidOperation("vertexAttribPointer: must have valid GL_ARRAY_BUFFER binding");

   339     GLsizei requiredAlignment = 1;

   340     switch (type) {

   341         case LOCAL_GL_BYTE:

   342         case LOCAL_GL_UNSIGNED_BYTE:

   343             requiredAlignment = 1;

   344             break;

   345         case LOCAL_GL_SHORT:

   346         case LOCAL_GL_UNSIGNED_SHORT:

   347             requiredAlignment = 2;

   348             break;

   349             // XXX case LOCAL_GL_FIXED:

   350         case LOCAL_GL_FLOAT:

   351             requiredAlignment = 4;

   352             break;

   353         default:

   354             return ErrorInvalidEnumInfo("vertexAttribPointer: type", type);

   355     }

   357     // requiredAlignment should always be a power of two.

   358     GLsizei requiredAlignmentMask = requiredAlignment - 1;

   360     if (!ValidateAttribIndex(index, "vertexAttribPointer")) {

   361         return;

   362     }

   364     if (size < 1 || size > 4)

   365         return ErrorInvalidValue("vertexAttribPointer: invalid element size");

   367     if (stride < 0 || stride > 255) // see WebGL spec section 6.6 "Vertex Attribute Data Stride"

   368         return ErrorInvalidValue("vertexAttribPointer: negative or too large stride");

   370     if (byteOffset < 0)

   371         return ErrorInvalidValue("vertexAttribPointer: negative offset");

   373     if (stride & requiredAlignmentMask) {

   374         return ErrorInvalidOperation("vertexAttribPointer: stride doesn't satisfy the alignment "

   375                                      "requirement of given type");

   376     }

   378     if (byteOffset & requiredAlignmentMask) {

   379         return ErrorInvalidOperation("vertexAttribPointer: byteOffset doesn't satisfy the alignment "

   380                                      "requirement of given type");

   382     }

   384     InvalidateBufferFetching();

   386     /* XXX make work with bufferSubData & heterogeneous types

   387      if (type != mBoundArrayBuffer->GLType())

   388      return ErrorInvalidOperation("vertexAttribPointer: type must match bound VBO type: %d != %d", type, mBoundArrayBuffer->GLType());

   389      */

   391     WebGLVertexAttribData &vd = mBoundVertexArray->mAttribs[index];

   393     vd.buf = mBoundArrayBuffer;

   394     vd.stride = stride;

   395     vd.size = size;

   396     vd.byteOffset = byteOffset;

   397     vd.type = type;

   398     vd.normalized = normalized;

   400     MakeContextCurrent();

   402     gl->fVertexAttribPointer(index, size, type, normalized,

   403                              stride,

   404                              reinterpret_cast<void*>(byteOffset));

   405 }

   407 void

   408 WebGLContext::VertexAttribDivisor(GLuint index, GLuint divisor)

   409 {

   410     if (IsContextLost())

   411         return;

   413     if (!ValidateAttribIndex(index, "vertexAttribDivisor")) {

   414         return;

   415     }

   417     WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];

   418     vd.divisor = divisor;

   420     InvalidateBufferFetching();

   422     MakeContextCurrent();

   424     gl->fVertexAttribDivisor(index, divisor);

   425 }

The Tor Browser / file revision

content/canvas/src/WebGLContextVertices.cpp@6474c204b198

content/canvas/src/WebGLContextVertices.cpp