[Mesa-dev] [PATCH 01/13] i965: Allow stencil to be used for sampling and as render target

[Topi Pohjolainen]

Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
---
 src/mesa/drivers/dri/i965/brw_surface_formats.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_surface_formats.c b/src/mesa/drivers/dri/i965/brw_surface_formats.c
index 5907dd9..7ffa5c4 100644
--- a/src/mesa/drivers/dri/i965/brw_surface_formats.c
+++ b/src/mesa/drivers/dri/i965/brw_surface_formats.c
@@ -221,7 +221,7 @@ const struct surface_format_info surface_formats[] = {
    SF( Y,  Y,  x, 45,  Y,  Y,  Y,  x,  x, BRW_SURFACEFORMAT_R8_UNORM)
    SF( Y,  Y,  x,  x,  Y, 60,  Y,  x,  x, BRW_SURFACEFORMAT_R8_SNORM)
    SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x, BRW_SURFACEFORMAT_R8_SINT)
-   SF( Y,  x,  x,  x,  Y,  x,  Y,  x,  x, BRW_SURFACEFORMAT_R8_UINT)
+   SF(60,  x,  x,  x, 60,  x,  Y,  x,  x, BRW_SURFACEFORMAT_R8_UINT)
    SF( Y,  Y,  x,  Y,  Y,  Y,  x,  x,  x, BRW_SURFACEFORMAT_A8_UNORM)
    SF( Y,  Y,  x,  x,  x,  x,  x,  x,  x, BRW_SURFACEFORMAT_I8_UNORM)
    SF( Y,  Y,  x,  Y,  x,  x,  x,  x,  x, BRW_SURFACEFORMAT_L8_UNORM)
@@ -594,9 +594,12 @@ brw_init_surface_formats(struct brw_context *brw)
        * integer, so we don't need hardware support for blending on it.  Other
        * than that, GL in general requires alpha blending for render targets,
        * even though we don't support it for some formats.
+       * Stencil is also supported as render targer for internal blitting and
+       * scaling purposes.
        */
       if (gen >= rinfo->render_target &&
-	  (gen >= rinfo->alpha_blend || is_integer)) {
+	  (gen >= rinfo->alpha_blend || is_integer ||
+           format == MESA_FORMAT_S_UINT8)) {
 	 brw->render_target_format[format] = render;
 	 brw->format_supported_as_render_target[format] = true;
       }
-- 
1.8.3.1