I wish we could come up with some clever way to not have to repeat the
multisample positions all over the place. Unfortunately, I don't have any
particularly fastastic ideas on how. We can figure that out later.
Patches 1 and 2 are
Reviewed-by: Jason Ekstrand
On Mon, Aug 8, 2016 at 2:57 PM, Anuj Phogat wrote:
> V1: Add multisample positions (Nanley)
> V2: Fix 8x sample positions (Anuj)
>
> Signed-off-by: Anuj Phogat
> ---
> src/intel/vulkan/genX_pipeline_util.h | 47 ++
> +
> 1 file changed, 47 insertions(+)
>
> diff --git a/src/intel/vulkan/genX_pipeline_util.h
> b/src/intel/vulkan/genX_pipeline_util.h
> index 52d386a..621edef 100644
> --- a/src/intel/vulkan/genX_pipeline_util.h
> +++ b/src/intel/vulkan/genX_pipeline_util.h
> @@ -470,6 +470,7 @@ emit_ms_state(struct anv_pipeline *pipeline,
> anv_batch_emit(&pipeline->batch, GENX(3DSTATE_MULTISAMPLE), ms) {
>ms.NumberofMultisamples = log2_samples;
>
> +#if GEN_GEN >= 8
>/* The PRM says that this bit is valid only for DX9:
> *
> *SW can choose to set this bit only for DX9 API. DX10/OGL API's
> @@ -477,6 +478,52 @@ emit_ms_state(struct anv_pipeline *pipeline,
> */
>ms.PixelPositionOffsetEnable = false;
>ms.PixelLocation = CENTER;
> +#else
> + ms.PixelLocation = PIXLOC_CENTER;
> +
> + switch (samples) {
> + case 1:
> + ms.Sample0XOffset = 0.5;
> + ms.Sample0YOffset = 0.5;
> + break;
> + case 2:
> + ms.Sample0XOffset = 0.25;
> + ms.Sample0YOffset = 0.25;
> + ms.Sample1XOffset = 0.75;
> + ms.Sample1YOffset = 0.75;
> + break;
> + case 4:
> + ms.Sample0XOffset = 0.375;
> + ms.Sample0YOffset = 0.125;
> + ms.Sample1XOffset = 0.875;
> + ms.Sample1YOffset = 0.375;
> + ms.Sample2XOffset = 0.125;
> + ms.Sample2YOffset = 0.625;
> + ms.Sample3XOffset = 0.625;
> + ms.Sample3YOffset = 0.875;
> + break;
> + case 8:
> + ms.Sample0XOffset = 0.4375;
> + ms.Sample0YOffset = 0.5625;
> + ms.Sample1XOffset = 0.5625;
> + ms.Sample1YOffset = 0.8125;
> + ms.Sample2XOffset = 0.6875;
> + ms.Sample2YOffset = 0.1875;
> + ms.Sample3XOffset = 0.8125;
> + ms.Sample3YOffset = 0.6875;
> + ms.Sample4XOffset = 0.0625;
> + ms.Sample4YOffset = 0.4375;
> + ms.Sample5XOffset = 0.3125;
> + ms.Sample5YOffset = 0.0625;
> + ms.Sample6XOffset = 0.9375;
> + ms.Sample6YOffset = 0.3125;
> + ms.Sample7XOffset = 0.1875;
> + ms.Sample7YOffset = 0.9375;
> + break;
> + default:
> + break;
> + }
> +#endif
> }
>
> anv_batch_emit(&pipeline->batch, GENX(3DSTATE_SAMPLE_MASK), sm) {
> --
> 2.5.5
>
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