diff options
| author | Brian Paul <brianp@vmware.com> | 2009-09-10 10:17:07 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-09-10 12:45:27 -0600 |
| commit | c5f8594aebac4b8ba972d09ab18dabd9cc47c8e9 (patch) | |
| tree | 6ea468d6ef5ede6fc328d2a85f973be7b21a0faf /src/mesa/drivers | |
| parent | 8398535331dae39ff5f52e94a69abdbf7507a343 (diff) | |
mesa: need to set all stencil bits to 0 before setting the 1 bits
Plus, check for pixel transfer stencil index/offset.
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/common/meta.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 28e49b6898..47090ba297 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -1456,6 +1456,8 @@ _mesa_meta_draw_pixels(GLcontext *ctx, } else if (_mesa_is_stencil_format(format)) { if (ctx->Extensions.ARB_fragment_program && + ctx->Pixel.IndexShift == 0 && + ctx->Pixel.IndexOffset == 0 && type == GL_UNSIGNED_BYTE) { /* We'll store stencil as alpha. This only works for GLubyte * image data because of how incoming values are mapped to alpha @@ -1590,6 +1592,13 @@ _mesa_meta_draw_pixels(GLcontext *ctx, _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE); + + /* set all stencil bits to 0 */ + _mesa_StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE); + _mesa_StencilFunc(GL_ALWAYS, 0, 255); + _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4); + + /* set stencil bits to 1 where needed */ _mesa_StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP); |