From d76e944799cc58db4ee45c5670aeeaddfff3c77c Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Wed, 15 Apr 2020 15:11:52 +0100
Subject: [PATCH] Implement radians/degrees conversion functions

---
 .../shaders/spirv/spirv_debug_glsl450.cpp     | 29 +++++++++++++++++++
 util/test/demos/vk/vk_shader_debug_zoo.cpp    | 10 +++++++
 2 files changed, 39 insertions(+)

diff --git a/renderdoc/driver/shaders/spirv/spirv_debug_glsl450.cpp b/renderdoc/driver/shaders/spirv/spirv_debug_glsl450.cpp
index 62f9eaae3..3fbca6058 100644
--- a/renderdoc/driver/shaders/spirv/spirv_debug_glsl450.cpp
+++ b/renderdoc/driver/shaders/spirv/spirv_debug_glsl450.cpp
@@ -167,6 +167,33 @@ ShaderVariable Fract(ThreadState &state, const rdcarray<Id> &params)
   return var;
 }
 
+static const float piOver180 = 3.14159265358979323846f / 180.0f;
+static const float piUnder180 = 180.0f / 3.14159265358979323846f;
+
+ShaderVariable Radians(ThreadState &state, const rdcarray<Id> &params)
+{
+  CHECK_PARAMS(1);
+
+  ShaderVariable var = state.GetSrc(params[0]);
+
+  for(uint32_t c = 0; c < var.columns; c++)
+    var.value.fv[c] = var.value.fv[c] * piOver180;
+
+  return var;
+}
+
+ShaderVariable Degrees(ThreadState &state, const rdcarray<Id> &params)
+{
+  CHECK_PARAMS(1);
+
+  ShaderVariable var = state.GetSrc(params[0]);
+
+  for(uint32_t c = 0; c < var.columns; c++)
+    var.value.fv[c] = var.value.fv[c] * piUnder180;
+
+  return var;
+}
+
 ShaderVariable Pow(ThreadState &state, const rdcarray<Id> &params)
 {
   CHECK_PARAMS(2);
@@ -518,6 +545,8 @@ void ConfigureGLSLStd450(ExtInstDispatcher &extinst)
   EXT(Floor);
   EXT(Ceil);
   EXT(Fract);
+  EXT(Radians);
+  EXT(Degrees);
   EXT(Pow);
   EXT(Determinant);
   EXT(MatrixInverse);
diff --git a/util/test/demos/vk/vk_shader_debug_zoo.cpp b/util/test/demos/vk/vk_shader_debug_zoo.cpp
index 7096b5578..ccda73db4 100644
--- a/util/test/demos/vk/vk_shader_debug_zoo.cpp
+++ b/util/test/demos/vk/vk_shader_debug_zoo.cpp
@@ -571,6 +571,16 @@ void main()
       Color = vec4(float(sign(onei*2)), float(sign(negi*2)), float(sign(0)), 1.0f);
       break;
     }
+    case 69:
+    {
+      Color = vec4(degrees(negone*2.4f), degrees(posone*2.4f), degrees(zerof), degrees(posone*34.56f));
+      break;
+    }
+    case 70:
+    {
+      Color = vec4(radians(negone*164.2f), radians(posone*164.2f), radians(zerof), radians(posone*3456.78f));
+      break;
+    }
     default: break;
   }
 }