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Bug 636002 - better messages about attrib index validation - r=jrmuizel, a=joe

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This commit is contained in:
Benoit Jacob 2011-02-24 17:17:34 -05:00
parent 16d3658b63
commit 84ea51cd32
3 changed files with 30 additions and 10 deletions
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1
content/canvas/src/WebGLContext.h
View File

@ -440,6 +440,7 @@ protected:
PRBool ValidateTexFormatAndType(WebGLenum format, WebGLenum type,
PRUint32 *texelSize, const char *info);
PRBool ValidateDrawModeEnum(WebGLenum mode, const char *info);
PRBool ValidateAttribIndex(WebGLuint index, const char *info);
void Invalidate();
void DestroyResourcesAndContext();

23
content/canvas/src/WebGLContextGL.cpp
View File

@ -183,6 +183,9 @@ WebGLContext::BindAttribLocation(nsIWebGLProgram *pobj, WebGLuint location, cons
if (name.IsEmpty())
return ErrorInvalidValue("BindAttribLocation: name can't be null or empty");
if (!ValidateAttribIndex(location, "bindAttribLocation"))
return NS_OK;
MakeContextCurrent();
gl->fBindAttribLocation(progname, location, NS_LossyConvertUTF16toASCII(name).get());
@ -1087,8 +1090,8 @@ WebGLContext::DepthRange(WebGLfloat zNear, WebGLfloat zFar)
NS_IMETHODIMP
WebGLContext::DisableVertexAttribArray(WebGLuint index)
{
if (index > mAttribBuffers.Length())
return ErrorInvalidValue("DisableVertexAttribArray: index out of range");
if (!ValidateAttribIndex(index, "disableVertexAttribArray"))
return NS_OK;
MakeContextCurrent();
@ -1452,8 +1455,8 @@ NS_IMETHODIMP WebGLContext::Disable(WebGLenum cap)
NS_IMETHODIMP
WebGLContext::EnableVertexAttribArray(WebGLuint index)
{
if (index > mAttribBuffers.Length())
return ErrorInvalidValue("EnableVertexAttribArray: index out of range");
if (!ValidateAttribIndex(index, "enableVertexAttribArray"))
return NS_OK;
MakeContextCurrent();
@ -2512,8 +2515,8 @@ WebGLContext::GetVertexAttrib(WebGLuint index, WebGLenum pname, nsIVariant **ret
{
*retval = nsnull;
if (index >= mAttribBuffers.Length())
return ErrorInvalidValue("getVertexAttrib: invalid index");
if (!ValidateAttribIndex(index, "getVertexAttrib"))
return NS_OK;
nsCOMPtr<nsIWritableVariant> wrval = do_CreateInstance("@mozilla.org/variant;1");
NS_ENSURE_TRUE(wrval, NS_ERROR_FAILURE);
@ -2579,8 +2582,8 @@ WebGLContext::GetVertexAttribOffset(WebGLuint index, WebGLenum pname, WebGLuint
{
*retval = 0;
if (index >= mAttribBuffers.Length())
return ErrorInvalidValue("getVertexAttribOffset: invalid index");
if (!ValidateAttribIndex(index, "getVertexAttribOffset"))
return NS_OK;
if (pname != LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER)
return ErrorInvalidEnum("getVertexAttribOffset: bad parameter");
@ -3873,8 +3876,8 @@ WebGLContext::VertexAttribPointer(WebGLuint index, WebGLint size, WebGLenum type
// requiredAlignment should always be a power of two.
WebGLsizei requiredAlignmentMask = requiredAlignment - 1;
if (index >= mAttribBuffers.Length())
return ErrorInvalidValue("VertexAttribPointer: index out of range - %d >= %d", index, mAttribBuffers.Length());
if (!ValidateAttribIndex(index, "vertexAttribPointer"))
return NS_OK;
if (size < 1 || size > 4)
return ErrorInvalidValue("VertexAttribPointer: invalid element size");

16
content/canvas/src/WebGLContextValidate.cpp
View File

@ -376,6 +376,22 @@ PRBool WebGLContext::ValidateTexFormatAndType(WebGLenum format, WebGLenum type,
}
}
PRBool WebGLContext::ValidateAttribIndex(WebGLuint index, const char *info)
{
if (index > mAttribBuffers.Length()) {
if (index == WebGLuint(-1)) {
ErrorInvalidValue("%s: index -1 is invalid. That probably comes from a getAttribLication() call, "
"where this return value -1 means that the passed name didn't correspond to an active attribute in "
"the specified program.", info);
} else {
ErrorInvalidValue("%s: index %d is out of range", info, index);
}
return PR_FALSE;
} else {
return PR_TRUE;
}
}
PRBool
WebGLContext::InitAndValidateGL()
{