[PATCH vkd3d v3 03/12] vkd3d-shader/hlsl: Add aoffimmi modifiers on Sample sm4 instructions.

[Francisco Casas]

Signed-off-by: Francisco Casas 
---
 libs/vkd3d-shader/hlsl_sm4.c | 39 ++++++++++++++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 2 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl_sm4.c b/libs/vkd3d-shader/hlsl_sm4.c
index 07bbd376..11e1f59a 100644
--- a/libs/vkd3d-shader/hlsl_sm4.c
+++ b/libs/vkd3d-shader/hlsl_sm4.c
@@ -1306,14 +1306,47 @@ static void write_sm4_ld(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer *buf

static void write_sm4_sample(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_deref *sampler, const struct hlsl_ir_node *coords)
+        const struct hlsl_deref *resource, const struct hlsl_deref *sampler,
+        const struct hlsl_ir_node *coords, const struct hlsl_ir_node *texel_offset)
 {
+    struct hlsl_ir_constant *offset;
     struct sm4_instruction instr;
     unsigned int writemask;

memset(&instr, 0, sizeof(instr));
     instr.opcode = VKD3D_SM4_OP_SAMPLE;

+    if (texel_offset)
+    {
+        struct sm4_instruction_modifier modif;
+        int valid_aoffimmi = 1;
+
+        if (texel_offset->type != HLSL_IR_CONSTANT)
+            valid_aoffimmi = 0;
+        else
+        {
+            offset = hlsl_ir_constant(texel_offset);
+            modif.type = VKD3D_SM4_MODIFIER_AOFFIMMI;
+            modif.aoffimmi.u = offset->value[0].i;
+            modif.aoffimmi.v = offset->value[1].i;
+            modif.aoffimmi.w = offset->value[2].i;
+            instr.modifiers[instr.modifier_count] = modif;
+            instr.modifier_count++;
+
+            valid_aoffimmi &= -8 <= modif.aoffimmi.u && modif.aoffimmi.u <= 7;
+            valid_aoffimmi &= -8 <= modif.aoffimmi.v && modif.aoffimmi.v <= 7;
+            valid_aoffimmi &= -8 <= modif.aoffimmi.w && modif.aoffimmi.w <= 7;
+        }
+
+        if (!valid_aoffimmi)
+        {
+            hlsl_error(ctx, &texel_offset->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_TYPE,
+                "Offset must resolve to integer literal in the range -8 to 7\n");
+            return;
+        }
+
+    }
+
     sm4_register_from_node(&instr.dsts[0].reg, &instr.dsts[0].writemask, NULL, dst);
     instr.dst_count = 1;

@@ -1626,6 +1659,7 @@ static void write_sm4_resource_load(struct hlsl_ctx *ctx,
 {
     const struct hlsl_type *resource_type = load->resource.var->data_type;
     const struct hlsl_ir_node *coords = load->coords.node;
+    const struct hlsl_ir_node *texel_offset = load->texel_offset.node;

if (load->sampler.var)
     {
@@ -1657,7 +1691,8 @@ static void write_sm4_resource_load(struct hlsl_ctx *ctx,
         case HLSL_RESOURCE_SAMPLE:
             if (!load->sampler.var)
                 hlsl_fixme(ctx, &load->node.loc, "SM4 combined sample expression.");
-            write_sm4_sample(ctx, buffer, resource_type, &load->node, &load->resource, &load->sampler, coords);
+            write_sm4_sample(ctx, buffer, resource_type, &load->node, &load->resource, &load->sampler,
+                    coords, texel_offset);
             break;
     }
 }