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mesa: Disallow TransformFeedbackVaryings when active.

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Fixes a subcase of Piglit's new ARB_transform_feedback2 api-errors test.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Kenneth Graunke 2013-09-06 12:38:12 -07:00
parent 2487324591
commit a7d616da69
1 changed files with 10 additions and 0 deletions
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10
src/mesa/main/transformfeedback.c
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@ -611,6 +611,16 @@ _mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,
GLint i;
GET_CURRENT_CONTEXT(ctx);
/* From the ARB_transform_feedback2 specification:
* "The error INVALID_OPERATION is generated by TransformFeedbackVaryings
* if the current transform feedback object is active, even if paused."
*/
if (ctx->TransformFeedback.CurrentObject->Active) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTransformFeedbackVaryings(current object is active)");
return;
}
switch (bufferMode) {
case GL_INTERLEAVED_ATTRIBS:
break;