http://bugs.freedesktop.org/show_bug.cgi?id=11475
Summary: skip PixelMap when draw STENCIL_INDEX
Product: Mesa
Version: CVS
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: minor
Priority: low
Component: Mesa core
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
Although enable stencil map by calling glPixelTransferi(GL_MAP_STENCIL,
GL_TRUE), the stencil map does not work when draw STENCIL_INDEX.
Root cause:
src/mesa/main/image.c/_mesa_unpack_stencil_span() Line 3671, it should be:
if (transferOps) {
if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
/* shift and offset indexes */
shift_and_offset_ci(ctx, n, indexes);
}
}
//move this outside the "transferOps" condition branch
if (ctx->Pixel.MapStencilFlag) {
/* Apply stencil lookup table */
GLuint mask = ctx->PixelMaps.StoS.Size - 1;
GLuint i;
for (i=0;i<n;i++) {
indexes[i] = ctx->PixelMaps.StoS.Map[ indexes[i] & mask ];
}
}
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