Re: [PATCH vkd3d 2/5] vkd3d-shader/hlsl: Write SM4 image load instructions.

[Giovanni Mascellani]

Signed-off-by: Giovanni Mascellani

On 02/11/21 01:43, Zebediah Figura wrote:
> Signed-off-by: Zebediah Figura
>
> libs/vkd3d-shader/hlsl_sm4.c | 95 +++++++++++++++++++++++++++++++++---
>   1 file changed, 88 insertions(+), 7 deletions(-)
>
> diff --git a/libs/vkd3d-shader/hlsl_sm4.c b/libs/vkd3d-shader/hlsl_sm4.c
> index f8eb0a1ef..5ab7df5f9 100644
> --- a/libs/vkd3d-shader/hlsl_sm4.c
> +++ b/libs/vkd3d-shader/hlsl_sm4.c
> @@ -763,6 +763,7 @@ static unsigned int sm4_swizzle_type(enum vkd3d_sm4_register_type type)
>       case VKD3D_SM4_RT_CONSTBUFFER:
>       case VKD3D_SM4_RT_INPUT:
> -
>    case VKD3D_SM4_RT_RESOURCE:
>     case VKD3D_SM4_RT_TEMP:
>         return VKD3D_SM4_SWIZZLE_VEC4;
>
> @@ -779,14 +780,26 @@ static void sm4_register_from_deref(struct hlsl_ctx *ctx, struct sm4_register *r
>   if (var->is_uniform)
>   {
> -
>    unsigned int offset = hlsl_offset_from_deref(deref) + var->buffer_offset;
> -
>    if (data_type->type == HLSL_CLASS_OBJECT && data_type->base_type == HLSL_TYPE_TEXTURE)
> -
>    {
> -
>        reg->type = VKD3D_SM4_RT_RESOURCE;
> -
>        reg->dim = VKD3D_SM4_DIMENSION_VEC4;
> -
>        reg->idx[0] = var->reg.id;
> -
>        reg->idx_count = 1;
> -
>        *writemask = VKD3DSP_WRITEMASK_ALL;
> -
>    }
> -
>    else
> -
>    {
> -
>        unsigned int offset = hlsl_offset_from_deref(deref) + var->buffer_offset;
>
> -
>    reg->type = VKD3D_SM4_RT_CONSTBUFFER;
> -
>    reg->dim = VKD3D_SM4_DIMENSION_VEC4;
> -
>    reg->idx[0] = var->buffer->reg.id;
> -
>    reg->idx[1] = offset / 4;
> -
>    reg->idx_count = 2;
> -
>    *writemask = ((1u << data_type->dimx) - 1) << (offset & 3);
> -
>        assert(data_type->type <= HLSL_CLASS_VECTOR);
> -
>        reg->type = VKD3D_SM4_RT_CONSTBUFFER;
> -
>        reg->dim = VKD3D_SM4_DIMENSION_VEC4;
> -
>        reg->idx[0] = var->buffer->reg.id;
> -
>        reg->idx[1] = offset / 4;
> -
>        reg->idx_count = 2;
> -
>        *writemask = ((1u << data_type->dimx) - 1) << (offset & 3);
> -
>    }
> }
> else if (var->is_input_semantic)
> {
>
> @@ -1154,6 +1167,50 @@ static void write_sm4_constant(struct hlsl_ctx *ctx,
>       write_sm4_instruction(buffer, &instr);
>   }
>
> +static void write_sm4_ld(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer *buffer,
> -
>    const struct hlsl_type *resource_type, const struct hlsl_ir_node *dst,
> -
>    const struct hlsl_deref *resource, const struct hlsl_ir_node *coords)
>
> +{
> - struct sm4_instruction instr;
> - unsigned int writemask;
> -
> - memset(&instr, 0, sizeof(instr));
> - instr.opcode = VKD3D_SM4_OP_LD;
> -
> - sm4_register_from_node(&instr.dsts[0].reg, &instr.dsts[0].writemask, dst);
> - instr.dst_count = 1;
> -
> - sm4_register_from_node(&instr.srcs[0].reg, &writemask, coords);
> - instr.srcs[0].swizzle = hlsl_swizzle_from_writemask(writemask);
> -
> - /* Mipmap level is in the last component in the IR, but needs to be in the W
> -
> * component in the instruction. */
> - switch (resource_type->sampler_dim)
> - {
> -
>    case HLSL_SAMPLER_DIM_1D:
> -
>        instr.srcs[0].swizzle = hlsl_combine_swizzles(instr.srcs[0].swizzle, HLSL_SWIZZLE(X, X, X, Y), 4);
> -
>        break;
> -
> -
>    case HLSL_SAMPLER_DIM_2D:
> -
>        instr.srcs[0].swizzle = hlsl_combine_swizzles(instr.srcs[0].swizzle, HLSL_SWIZZLE(X, Y, X, Z), 4);
> -
>        break;
> -
> -
>    case HLSL_SAMPLER_DIM_3D:
> -
>    case HLSL_SAMPLER_DIM_CUBE:
> -
>        break;
> -
> -
>    case HLSL_SAMPLER_DIM_GENERIC:
> -
>        assert(0);
> - }
> -
> - sm4_register_from_deref(ctx, &instr.srcs[1].reg, &writemask, resource, resource_type);
> - instr.srcs[1].swizzle = hlsl_map_swizzle(hlsl_swizzle_from_writemask(writemask), instr.dsts[0].writemask);
> -
> - instr.src_count = 2;
> -
> - write_sm4_instruction(buffer, &instr);
>
> +}
> - static void write_sm4_expr(struct hlsl_ctx *ctx,
>         struct vkd3d_bytecode_buffer *buffer, const struct hlsl_ir_expr *expr)
> {
>
> @@ -1375,6 +1432,26 @@ static void write_sm4_load(struct hlsl_ctx *ctx,
>       write_sm4_instruction(buffer, &instr);
>   }
>
> +static void write_sm4_resource_load(struct hlsl_ctx *ctx,
> -
>    struct vkd3d_bytecode_buffer *buffer, const struct hlsl_ir_resource_load *load)
>
> +{
> - const struct hlsl_type *resource_type = load->resource.var->data_type;
> - const struct hlsl_ir_node *coords = load->coords.node;
> -
> - if (!load->resource.var->is_uniform)
> - {
> -
>    hlsl_fixme(ctx, load->node.loc, "Load from non-uniform resource variable.");
> -
>    return;
> - }
> -
> - switch (load->load_type)
> - {
> -
>    case HLSL_RESOURCE_LOAD:
> -
>        write_sm4_ld(ctx, buffer, resource_type, &load->node, &load->resource, coords);
> -
>        break;
> - }
>
> +}
> - static void write_sm4_store(struct hlsl_ctx *ctx,
>         struct vkd3d_bytecode_buffer *buffer, const struct hlsl_ir_store *store)
> {
>
> @@ -1504,6 +1581,10 @@ static void write_sm4_shdr(struct hlsl_ctx *ctx,
>                   write_sm4_load(ctx, &buffer, hlsl_ir_load(instr));
>                   break;
> -
>        case HLSL_IR_RESOURCE_LOAD:
> -
>            write_sm4_resource_load(ctx, &buffer, hlsl_ir_resource_load(instr));
> -
>            break;
> -
>         case HLSL_IR_STORE:
>             write_sm4_store(ctx, &buffer, hlsl_ir_store(instr));
>             break;