On Sat, Jul 21, 2012 at 6:36 PM, Chad Versace
<chad.vers...@linux.intel.com> wrote:
> CC: Eric Anholt <e...@anholt.net>
> CC: Paul Berry <stereotype...@gmail.com>
> Signed-off-by: Chad Versace <chad.vers...@linux.intel.com>
> ---
> src/mesa/drivers/dri/intel/intel_screen.c | 31
> +++++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/intel/intel_screen.c
> b/src/mesa/drivers/dri/intel/intel_screen.c
> index 4a12b67..958ff9f 100644
> --- a/src/mesa/drivers/dri/intel/intel_screen.c
> +++ b/src/mesa/drivers/dri/intel/intel_screen.c
> @@ -177,6 +177,36 @@ static const __DRItexBufferExtension
> intelTexBufferExtension = {
> };
>
> static void
> +intel_downsample_for_dri2_flush(struct intel_context *intel,
> + __DRIdrawable *drawable)
> +{
> + if (intel->gen < 6) {
> + /* MSAA is not supported, so don't waste time checking for
> + * a multisample buffer.
> + */
> + return;
> + }
> +
> + struct gl_framebuffer *fb = drawable->driverPrivate;
> + struct intel_renderbuffer *rb;
Declarations following code will cause a compiler error (depending on
the compiler and flags). You might want to fix that, just in case.
> +
> + /* Usually, only the back buffer will need to be downsampled. However,
> + * the front buffer will also need it if the user has rendered into it.
> + */
> + static const gl_buffer_index buffers[2] = {
> + BUFFER_BACK_LEFT,
> + BUFFER_FRONT_LEFT,
> + };
> +
> + for (int i = 0; i < 2; ++i) {
> + rb = intel_get_renderbuffer(fb, buffers[i]);
> + if (rb == NULL || rb->mt == NULL)
> + continue;
> + intel_miptree_downsample(intel, rb->mt);
> + }
> +}
> +
> +static void
> intelDRI2Flush(__DRIdrawable *drawable)
> {
> GET_CURRENT_CONTEXT(ctx);
> @@ -187,6 +217,7 @@ intelDRI2Flush(__DRIdrawable *drawable)
> if (intel->gen < 4)
> INTEL_FIREVERTICES(intel);
>
> + intel_downsample_for_dri2_flush(intel, drawable);
> intel->need_throttle = true;
>
> if (intel->batch.used)
> --
> 1.7.11.2
>
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