diff options
| author | Chad Versace <chad@chad-versace.us> | 2011-06-08 18:34:02 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-06-08 19:27:33 +0100 |
| commit | 68755bc5ff830dc5ed6a34b18a1217b7d1003ce4 (patch) | |
| tree | 01c1b6d408ae5d95627edd6992f3cc6c31fed230 | |
| parent | 0030c3aab6172cdb83ca8f1b7b07c7db5915990d (diff) | |
sna/dri: Add support for DRI2BufferStencil and DRI2BufferHiz
Based on Chad's commits 2662db5b and 3daba7e6:
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/sna_dri.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/sna/sna_dri.c b/src/sna/sna_dri.c index a4dd524b..3b085b40 100644 --- a/src/sna/sna_dri.c +++ b/src/sna/sna_dri.c @@ -186,7 +186,32 @@ sna_dri_create_buffer(DrawablePtr drawable, unsigned int attachment, bpp = pixmap->drawable.bitsPerPixel; break; - default: + case DRI2BufferStencil: + /* + * The stencil buffer has quirky pitch requirements. From Vol + * 2a, 11.5.6.2.1 3DSTATE_STENCIL_BUFFER, field "Surface + * Pitch": + * The pitch must be set to 2x the value computed based on + * width, as the stencil buffer is stored with two rows + * interleaved. + * To accomplish this, we resort to the nasty hack of doubling + * the drm region's cpp and halving its height. + * + * If we neglect to double the pitch, then + * drm_intel_gem_bo_map_gtt() maps the memory incorrectly. + */ + bpp = format ? format : drawable->bitsPerPixel; + bo = kgem_create_2d(&sna->kgem, + drawable->width, + drawable->height/2, 2*bpp, + I915_TILING_Y, + CREATE_EXACT); + break; + + case DRI2BufferDepth: + case DRI2BufferDepthStencil: + case DRI2BufferHiz: + case DRI2BufferAccum: bpp = format ? format : drawable->bitsPerPixel, bo = kgem_create_2d(&sna->kgem, drawable->width, drawable->height, bpp, @@ -194,6 +219,9 @@ sna_dri_create_buffer(DrawablePtr drawable, unsigned int attachment, I915_TILING_Y, CREATE_EXACT); break; + + default: + break; } if (bo == NULL) goto err; |