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Bug 1150310 - Return context cached value for stencil* queries. r=jgilbert

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This commit is contained in:
JerryShih 2015-06-09 00:37:00 -04:00
parent 863867d4ec
commit b229388a01
1 changed files with 10 additions and 8 deletions
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18
dom/canvas/WebGLContextState.cpp
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@ -426,15 +426,17 @@ WebGLContext::GetParameter(JSContext* cx, GLenum pname, ErrorResult& rv)
// unsigned int. here we may have to return very large values like 2^32-1 that can't be represented as
// javascript integer values. We just return them as doubles and javascript doesn't care.
case LOCAL_GL_STENCIL_BACK_VALUE_MASK:
case LOCAL_GL_STENCIL_BACK_WRITEMASK:
case LOCAL_GL_STENCIL_VALUE_MASK:
case LOCAL_GL_STENCIL_BACK_VALUE_MASK: {
return JS::DoubleValue(mStencilValueMaskBack); // pass as FP value to allow large values such as 2^32-1.
}
case LOCAL_GL_STENCIL_BACK_WRITEMASK: {
return JS::DoubleValue(mStencilWriteMaskBack);
}
case LOCAL_GL_STENCIL_VALUE_MASK: {
return JS::DoubleValue(mStencilValueMaskFront);
}
case LOCAL_GL_STENCIL_WRITEMASK: {
GLint i = 0; // the GL api (glGetIntegerv) only does signed ints
gl->fGetIntegerv(pname, &i);
GLuint i_unsigned(i); // this is where -1 becomes 2^32-1
double i_double(i_unsigned); // pass as FP value to allow large values such as 2^32-1.
return JS::DoubleValue(i_double);
return JS::DoubleValue(mStencilWriteMaskFront);
}
// float