On Fri, Jan 30, 2015 at 3:34 PM, Axel Davy <axel.d...@ens.fr> wrote:
> This D3D hack is supposed to be supported
> by all AMD SM2+ cards. Apps use it without
> checking if they are on AMD.
>
> Signed-off-by: Axel Davy <axel.d...@ens.fr>
> ---
> src/gallium/state_trackers/nine/device9.c | 17 +++++++++++++++--
> src/gallium/state_trackers/nine/nine_pipe.c | 2 +-
> src/gallium/state_trackers/nine/nine_state.c | 3 ++-
> src/gallium/state_trackers/nine/nine_state.h | 3 ++-
> 4 files changed, 20 insertions(+), 5 deletions(-)
>
> diff --git a/src/gallium/state_trackers/nine/device9.c
> b/src/gallium/state_trackers/nine/device9.c
> index a446c8f..63f9f16 100644
> --- a/src/gallium/state_trackers/nine/device9.c
> +++ b/src/gallium/state_trackers/nine/device9.c
> @@ -2049,6 +2049,9 @@ NineDevice9_ResolveZ( struct NineDevice9 *This )
> return D3D_OK;
> }
>
> +#define ALPHA_TO_COVERAGE_ENABLE MAKEFOURCC('A', '2', 'M', '1')
> +#define ALPHA_TO_COVERAGE_DISABLE MAKEFOURCC('A', '2', 'M', '0')
> +
> HRESULT WINAPI
> NineDevice9_SetRenderState( struct NineDevice9 *This,
> D3DRENDERSTATETYPE State,
> @@ -2059,8 +2062,18 @@ NineDevice9_SetRenderState( struct NineDevice9 *This,
> DBG("This=%p State=%u(%s) Value=%08x\n", This,
> State, nine_d3drs_to_string(State), Value);
>
> - if (State == D3DRS_POINTSIZE && Value == RESZ_CODE)
> - return NineDevice9_ResolveZ(This);
> + /* Amd hacks (equivalent to GL extensions) */
> + if (State == D3DRS_POINTSIZE) {
> + if (Value == RESZ_CODE)
> + return NineDevice9_ResolveZ(This);
> +
> + if (Value == ALPHA_TO_COVERAGE_ENABLE ||
> + Value == ALPHA_TO_COVERAGE_DISABLE) {
> + state->rs[NINED3DRS_ALPHACOVERAGE] = (Value ==
> ALPHA_TO_COVERAGE_ENABLE);
> + state->changed.group |= NINE_STATE_BLEND;
Only if it actually changed, no?
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