[PATCH vkd3d 5/5] vkd3d-shader: Write SM1 negation instructions.

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 libs/vkd3d-shader/hlsl_codegen.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 64910662..c2cedd2a 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -1618,6 +1618,28 @@ static void write_sm1_binary_op(struct hlsl_ctx *ctx, struct bytecode_buffer *bu
     write_sm1_instruction(ctx, buffer, &instr);
 }

+static void write_sm1_unary_op(struct hlsl_ctx *ctx, struct bytecode_buffer *buffer,
+        D3DSHADER_INSTRUCTION_OPCODE_TYPE opcode, const struct hlsl_reg *dst,
+        const struct hlsl_reg *src, D3DSHADER_PARAM_SRCMOD_TYPE src_mod)
+{
+    const struct sm1_instruction instr =
+    {
+        .opcode = opcode,
+
+        .dst.type = D3DSPR_TEMP,
+        .dst.writemask = dst->writemask,
+        .dst.reg = dst->id,
+        .has_dst = 1,
+
+        .srcs[0].type = D3DSPR_TEMP,
+        .srcs[0].swizzle = swizzle_from_writemask(src->writemask),
+        .srcs[0].reg = src->id,
+        .srcs[0].mod = src_mod,
+        .src_count = 1,
+    };
+    write_sm1_instruction(ctx, buffer, &instr);
+}
+
 static void write_sm1_constant_defs(struct hlsl_ctx *ctx, struct bytecode_buffer *buffer)
 {
     unsigned int i, x;
@@ -1745,6 +1767,10 @@ static void write_sm1_expr(struct hlsl_ctx *ctx, struct bytecode_buffer *buffer,
             write_sm1_binary_op(ctx, buffer, D3DSIO_MUL, &instr->reg, &arg1->reg, &arg2->reg);
             break;

+        case HLSL_IR_UNOP_NEG:
+            write_sm1_unary_op(ctx, buffer, D3DSIO_MOV, &instr->reg, &arg1->reg, D3DSPSM_NEG);
+            break;
+
         default:
             FIXME("Unhandled op %u.\n", expr->op);
             break;