diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_screen_surface.c')
-rw-r--r-- | src/gallium/drivers/i965/brw_screen_surface.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_screen_surface.c b/src/gallium/drivers/i965/brw_screen_surface.c new file mode 100644 index 0000000000..d199d0b81a --- /dev/null +++ b/src/gallium/drivers/i965/brw_screen_surface.c @@ -0,0 +1,27 @@ + /* _NEW_BUFFERS */ + if (IS_965(intel->intelScreen->deviceID) && + !IS_G4X(intel->intelScreen->deviceID)) { + for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { + struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[i]; + struct intel_renderbuffer *irb = intel_renderbuffer(rb); + + /* The original gen4 hardware couldn't set up WM surfaces pointing + * at an offset within a tile, which can happen when rendering to + * anything but the base level of a texture or the +X face/0 depth. + * This was fixed with the 4 Series hardware. + * + * For these original chips, you would have to make the depth and + * color destination surfaces include information on the texture + * type, LOD, face, and various limits to use them as a destination. + * I would have done this, but there's also a nasty requirement that + * the depth and the color surfaces all be of the same LOD, which + * may be a worse requirement than this alignment. (Also, we may + * want to just demote the texture to untiled, instead). + */ + if (irb->region && + irb->region->tiling != I915_TILING_NONE && + (irb->region->draw_offset & 4095)) { + DBG("FALLBACK: non-tile-aligned destination for tiled FBO\n"); + return GL_TRUE; + } + } |