[Mesa-dev] [PATCH] ac: implement nir_intrinsic_image_samples

[Marek Olšák]

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Tue, Feb 13, 2018 at 7:01 AM, Timothy Arceri <tarceri at itsqueeze.com> wrote:
> Fixes cts test:
> KHR-GL45.shader_texture_image_samples_tests.image_functional_test
> ---
>  src/amd/common/ac_nir_to_llvm.c | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>
> diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
> index 3af3dbace2..8d1eed241f 100644
> --- a/src/amd/common/ac_nir_to_llvm.c
> +++ b/src/amd/common/ac_nir_to_llvm.c
> @@ -3785,6 +3785,26 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
>         return ac_build_intrinsic(&ctx->ac, intrinsic_name, ctx->ac.i32, params, param_count, 0);
>  }
>
> +static LLVMValueRef visit_image_samples(struct ac_nir_context *ctx,
> +                                       const nir_intrinsic_instr *instr)
> +{
> +       const nir_variable *var = instr->variables[0]->var;
> +       const struct glsl_type *type = glsl_without_array(var->type);
> +       bool da = glsl_sampler_type_is_array(type) ||
> +                 glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE ||
> +                 glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_3D;
> +
> +       struct ac_image_args args = { 0 };
> +       args.da = da;
> +       args.dmask = 0xf;
> +       args.resource = get_sampler_desc(ctx, instr->variables[0],
> +                                        AC_DESC_IMAGE, NULL, true, false);
> +       args.opcode = ac_image_get_resinfo;
> +       args.addr = ctx->ac.i32_0;
> +
> +       return ac_build_image_opcode(&ctx->ac, &args);
> +}
> +
>  static LLVMValueRef visit_image_size(struct ac_nir_context *ctx,
>                                      const nir_intrinsic_instr *instr)
>  {
> @@ -4483,6 +4503,9 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
>         case nir_intrinsic_store_shared:
>                 visit_store_shared(ctx, instr);
>                 break;
> +       case nir_intrinsic_image_samples:
> +               result = visit_image_samples(ctx, instr);
> +               break;
>         case nir_intrinsic_image_load:
>                 result = visit_image_load(ctx, instr);
>                 break;
> --
> 2.14.3
>
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