From 87f34094db30ee9f46017a7271ae1347768a2fc8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B3zef=20Kucia?= <jkucia@codeweavers.com>
Date: Wed, 19 Jul 2017 13:51:44 +0200
Subject: [PATCH] libs/vkd3d-shader: Translate imul instructions.

---
 libs/vkd3d-shader/spirv.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index 69f816ce..a6696de6 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -2738,6 +2738,33 @@ static void vkd3d_dxbc_compiler_emit_dot(struct vkd3d_dxbc_compiler *compiler,
     vkd3d_dxbc_compiler_emit_store_dst(compiler, dst, val_id);
 }
 
+static void vkd3d_dxbc_compiler_emit_imul(struct vkd3d_dxbc_compiler *compiler,
+        const struct vkd3d_shader_instruction *instruction)
+{
+    struct vkd3d_spirv_builder *builder = &compiler->spirv_builder;
+    const struct vkd3d_shader_dst_param *dst = instruction->dst;
+    const struct vkd3d_shader_src_param *src = instruction->src;
+    uint32_t type_id, val_id, src0_id, src1_id;
+    unsigned int component_count;
+
+    if (dst[0].reg.type != VKD3DSPR_NULL)
+        FIXME("Extended multiplies not implemented.\n"); /* SpvOpSMulExtended */
+
+    if (dst[1].reg.type == VKD3DSPR_NULL)
+        return;
+
+    component_count = vkd3d_write_mask_component_count(dst[1].write_mask);
+    type_id = vkd3d_spirv_get_type_id(builder,
+            vkd3d_component_type_from_data_type(dst[1].reg.data_type), component_count);
+
+    src0_id = vkd3d_dxbc_compiler_emit_load_src(compiler, &src[0], dst[1].write_mask);
+    src1_id = vkd3d_dxbc_compiler_emit_load_src(compiler, &src[1], dst[1].write_mask);
+
+    val_id = vkd3d_spirv_build_op_imul(builder, type_id, src0_id, src1_id);
+
+    vkd3d_dxbc_compiler_emit_store_dst(compiler, &dst[1], val_id);
+}
+
 static void vkd3d_dxbc_compiler_emit_imad(struct vkd3d_dxbc_compiler *compiler,
         const struct vkd3d_shader_instruction *instruction)
 {
@@ -3173,6 +3200,9 @@ void vkd3d_dxbc_compiler_handle_instruction(struct vkd3d_dxbc_compiler *compiler
         case VKD3DSIH_DP2:
             vkd3d_dxbc_compiler_emit_dot(compiler, instruction);
             break;
+        case VKD3DSIH_IMUL:
+            vkd3d_dxbc_compiler_emit_imul(compiler, instruction);
+            break;
         case VKD3DSIH_IMAD:
             vkd3d_dxbc_compiler_emit_imad(compiler, instruction);
             break;