From fdbfb2c92de57420c100839218265b2bb058f42f Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Sun, 4 Aug 2019 00:01:46 +0100
Subject: [PATCH] [spirv] Implement opInverse, opNormalize and opLength

---
 src/spirv/spirv_module.cpp | 45 ++++++++++++++++++++++++++++++++++++++
 src/spirv/spirv_module.h   | 12 ++++++++++
 2 files changed, 57 insertions(+)

diff --git a/src/spirv/spirv_module.cpp b/src/spirv/spirv_module.cpp
index 9549bccf9..1f56aaa92 100644
--- a/src/spirv/spirv_module.cpp
+++ b/src/spirv/spirv_module.cpp
@@ -1974,6 +1974,21 @@ namespace dxvk {
   }
 
 
+  uint32_t SpirvModule::opInverse(
+    uint32_t                resultType,
+    uint32_t                matrix) {
+    uint32_t resultId = this->allocateId();
+
+    m_code.putIns(spv::OpExtInst, 6);
+    m_code.putWord(resultType);
+    m_code.putWord(resultId);
+    m_code.putWord(m_instExtGlsl450);
+    m_code.putWord(spv::GLSLstd450MatrixInverse);
+    m_code.putWord(matrix);
+    return resultId;
+  }
+
+
   uint32_t SpirvModule::opFFma(
           uint32_t                resultType,
           uint32_t                a,
@@ -2553,6 +2568,36 @@ namespace dxvk {
     m_code.putWord(operand);
     return resultId;
   }
+
+
+  uint32_t SpirvModule::opNormalize(
+          uint32_t                resultType,
+          uint32_t                operand) {
+    uint32_t resultId = this->allocateId();
+    
+    m_code.putIns (spv::OpExtInst, 6);
+    m_code.putWord(resultType);
+    m_code.putWord(resultId);
+    m_code.putWord(m_instExtGlsl450);
+    m_code.putWord(spv::GLSLstd450Normalize);
+    m_code.putWord(operand);
+    return resultId;
+  }
+
+
+  uint32_t SpirvModule::opLength(
+          uint32_t                resultType,
+          uint32_t                operand) {
+    uint32_t resultId = this->allocateId();
+    
+    m_code.putIns (spv::OpExtInst, 6);
+    m_code.putWord(resultType);
+    m_code.putWord(resultId);
+    m_code.putWord(m_instExtGlsl450);
+    m_code.putWord(spv::GLSLstd450Length);
+    m_code.putWord(operand);
+    return resultId;
+  }
   
   
   uint32_t SpirvModule::opExp2(
diff --git a/src/spirv/spirv_module.h b/src/spirv/spirv_module.h
index bbdb3a807..8d3f89296 100644
--- a/src/spirv/spirv_module.h
+++ b/src/spirv/spirv_module.h
@@ -711,6 +711,10 @@ namespace dxvk {
     uint32_t opTranspose(
             uint32_t                resultType,
             uint32_t                matrix);
+
+    uint32_t opInverse(
+            uint32_t                resultType,
+            uint32_t                matrix);
     
     uint32_t opFFma(
             uint32_t                resultType,
@@ -894,6 +898,14 @@ namespace dxvk {
     uint32_t opInverseSqrt(
             uint32_t                resultType,
             uint32_t                operand);
+
+    uint32_t opNormalize(
+            uint32_t                resultType,
+            uint32_t                operand);
+
+    uint32_t opLength(
+            uint32_t                resultType,
+            uint32_t                operand);
     
     uint32_t opExp2(
             uint32_t                resultType,