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Bug 615013 - Implement section 6.8 on mutually incompatible blend factors - r=vlad

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This commit is contained in:
Benoit Jacob
2010-12-06 06:34:35 -05:00
parent b8ffb0cb39
commit 9c89792a33
3 changed files with 31 additions and 3 deletions
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19
content/canvas/src/WebGLContextValidate.cpp
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@@ -204,6 +204,25 @@ PRBool WebGLContext::ValidateBlendFuncSrcEnum(WebGLenum factor, const char *info
return ValidateBlendFuncDstEnum(factor, info);
}
PRBool WebGLContext::ValidateBlendFuncEnumsCompatibility(WebGLenum sfactor, WebGLenum dfactor, const char *info)
{
PRBool sfactorIsConstantColor = sfactor == LOCAL_GL_CONSTANT_COLOR ||
sfactor == LOCAL_GL_ONE_MINUS_CONSTANT_COLOR;
PRBool sfactorIsConstantAlpha = sfactor == LOCAL_GL_CONSTANT_ALPHA ||
sfactor == LOCAL_GL_ONE_MINUS_CONSTANT_ALPHA;
PRBool dfactorIsConstantColor = dfactor == LOCAL_GL_CONSTANT_COLOR ||
dfactor == LOCAL_GL_ONE_MINUS_CONSTANT_COLOR;
PRBool dfactorIsConstantAlpha = dfactor == LOCAL_GL_CONSTANT_ALPHA ||
dfactor == LOCAL_GL_ONE_MINUS_CONSTANT_ALPHA;
if ( (sfactorIsConstantColor && dfactorIsConstantAlpha) ||
(dfactorIsConstantColor && sfactorIsConstantAlpha) ) {
ErrorInvalidOperation("%s are mutually incompatible, see section 6.8 in the WebGL 1.0 spec", info);
return PR_FALSE;
} else {
return PR_TRUE;
}
}
PRBool WebGLContext::ValidateTextureTargetEnum(WebGLenum target, const char *info)
{
switch (target) {