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cogl-clip-stack: Fix flushing multiple stencil rectangles

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When flushing a clip stack that contains more than one rectangle which
needs to use the stencil buffer the code takes a different path so
that it can combine the new rectangle with the existing contents of
the stencil buffer. However it was not correctly flushing the
modelview and projection matrices so that rectangle would be in the
wrong place.
This commit is contained in:
Neil Roberts 2011-01-24 17:32:06 +00:00
parent 6102f80244
commit 4609770bb9
1 changed files with 8 additions and 8 deletions
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16
clutter/cogl/cogl/cogl-clip-stack.c
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@ -203,6 +203,14 @@ add_stencil_clip_rectangle (float x_1,
/* temporarily swap in our special stenciling pipeline */
cogl_push_source (ctx->stencil_pipeline);
/* This can be called from the journal code which doesn't flush
the matrix stacks between calls so we need to ensure they're
flushed now */
_cogl_matrix_stack_flush_to_gl (modelview_stack,
COGL_MATRIX_MODELVIEW);
_cogl_matrix_stack_flush_to_gl (projection_stack,
COGL_MATRIX_PROJECTION);
if (first)
{
GE( glEnable (GL_STENCIL_TEST) );
@ -215,14 +223,6 @@ add_stencil_clip_rectangle (float x_1,
GE( glStencilFunc (GL_NEVER, 0x1, 0x1) );
GE( glStencilOp (GL_REPLACE, GL_REPLACE, GL_REPLACE) );
/* This can be called from the journal code which doesn't flush
the matrix stacks between calls so we need to ensure they're
flushed now */
_cogl_matrix_stack_flush_to_gl (modelview_stack,
COGL_MATRIX_MODELVIEW);
_cogl_matrix_stack_flush_to_gl (projection_stack,
COGL_MATRIX_PROJECTION);
_cogl_rectangle_immediate (x_1, y_1, x_2, y_2);
}
else