Added proper transform feedback checks to glDrawRangeElements

It is illegal to start a new draw operation while a transform feedback is active. Change-Id: I5ebb01889ce5154162a51f5e6cfbc8431554c879 Reviewed-on: https://swiftshader-review.googlesource.com/3549Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

Added proper transform feedback checks to glDrawRangeElements
146411a8 · Alexis Hetu · Alexis Hétu · 395f00bc · 146411a8
Commit 146411a8 authored Jun 23, 2015 by Alexis Hetu Committed by Alexis Hétu Jun 25, 2015
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libGLESv3.cpp src/OpenGL/libGLESv2/libGLESv3.cpp +6 -0

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--- a/src/OpenGL/libGLESv2/libGLESv3.cpp
+++ b/src/OpenGL/libGLESv2/libGLESv3.cpp
@@ -549,6 +549,12 @@ GL_APICALL void GL_APIENTRY glDrawRangeElements(GLenum mode, GLuint start, GLuin
 	if(context)
 	{
+		es2::TransformFeedback* transformFeedback = context->getTransformFeedback();
+		if(transformFeedback && transformFeedback->isActive() && !transformFeedback->isPaused())
+		{
+			return error(GL_INVALID_OPERATION);
+		}
 		context->drawElements(mode, start, end, count, type, indices);
 	}
 }