[PATCH vkd3d 3/6] vkd3d-shader/hlsl: Write SM4 load instructions.

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 Makefile.am                  |  1 -
 libs/vkd3d-shader/hlsl_sm4.c | 60 +++++++++++++++++++++++++++++++++++-
 2 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index fc1714f7..1bbe1c5f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -274,7 +274,6 @@ XFAIL_TESTS = \
    tests/hlsl-static-initializer.shader_test \
    tests/hlsl-storage-qualifiers.shader_test \
    tests/hlsl-struct-assignment.shader_test \
-	tests/hlsl-struct-semantics.shader_test \
    tests/hlsl-vector-indexing.shader_test \
    tests/hlsl-vector-indexing-uniform.shader_test \
    tests/math.shader_test \
diff --git a/libs/vkd3d-shader/hlsl_sm4.c b/libs/vkd3d-shader/hlsl_sm4.c
index 2e304c5a..723b6005 100644
--- a/libs/vkd3d-shader/hlsl_sm4.c
+++ b/libs/vkd3d-shader/hlsl_sm4.c
@@ -605,7 +605,42 @@ static void sm4_register_from_deref(struct hlsl_ctx *ctx, struct sm4_register *r
 {
     const struct hlsl_ir_var *var = deref->var;

-    if (var->is_output_semantic)
+    if (var->is_uniform)
+    {
+        reg->type = VKD3D_SM4_RT_CONSTBUFFER;
+        reg->idx[0] = var->buffer->reg.id;
+        reg->idx[1] = var->buffer_offset / 4;
+        reg->idx_count = 2;
+        *writemask = ((1u << data_type->dimx) - 1) << (var->buffer_offset & 3);
+    }
+    else if (var->is_input_semantic)
+    {
+        bool has_idx;
+
+        if (hlsl_sm4_register_from_semantic(ctx, &var->semantic, false, &reg->type, &has_idx))
+        {
+            if (has_idx)
+            {
+                reg->idx[0] = var->semantic.index;
+                reg->idx_count = 1;
+            }
+
+            reg->dim = VKD3D_SM4_DIMENSION_VEC4;
+            *writemask = (1u << data_type->dimx) - 1;
+        }
+        else
+        {
+            struct hlsl_reg hlsl_reg = hlsl_reg_from_deref(deref, data_type);
+
+            assert(hlsl_reg.allocated);
+            reg->type = VKD3D_SM4_RT_INPUT;
+            reg->dim = VKD3D_SM4_DIMENSION_VEC4;
+            reg->idx[0] = hlsl_reg.id;
+            reg->idx_count = 1;
+            *writemask = hlsl_reg.writemask;
+        }
+    }
+    else if (var->is_output_semantic)
     {
         bool has_idx;

@@ -844,6 +879,25 @@ static void write_sm4_ret(struct vkd3d_bytecode_buffer *buffer)
     write_sm4_instruction(buffer, &instr);
 }

+static void write_sm4_load(struct hlsl_ctx *ctx,
+        struct vkd3d_bytecode_buffer *buffer, const struct hlsl_ir_load *load)
+{
+    struct sm4_instruction instr;
+    unsigned int writemask;
+
+    memset(&instr, 0, sizeof(instr));
+    instr.opcode = VKD3D_SM4_OP_MOV;
+
+    sm4_register_from_node(&instr.dst.reg, &instr.dst.writemask, &load->node);
+    instr.has_dst = 1;
+
+    sm4_register_from_deref(ctx, &instr.srcs[0].reg, &writemask, &load->src, load->node.data_type);
+    instr.srcs[0].swizzle = hlsl_map_swizzle(hlsl_swizzle_from_writemask(writemask), instr.dst.writemask);
+    instr.src_count = 1;
+
+    write_sm4_instruction(buffer, &instr);
+}
+
 static void write_sm4_store(struct hlsl_ctx *ctx,
         struct vkd3d_bytecode_buffer *buffer, const struct hlsl_ir_store *store)
 {
@@ -927,6 +981,10 @@ static void write_sm4_shdr(struct hlsl_ctx *ctx,

switch (instr->type)
         {
+            case HLSL_IR_LOAD:
+                write_sm4_load(ctx, &buffer, hlsl_ir_load(instr));
+                break;
+
             case HLSL_IR_STORE:
                 write_sm4_store(ctx, &buffer, hlsl_ir_store(instr));
                 break;