[Bf-blender-cvs] [80144db42d1] temp-image-buffer-rasterizer: Add check if vertex and fragment shader can be linked.

[Jeroen Bakker]

Commit: 80144db42d1ffd279aa0aeeeb8607e887e5e5775
Author: Jeroen Bakker
Date:   Fri Feb 18 12:57:51 2022 +0100
Branches: temp-image-buffer-rasterizer
https://developer.blender.org/rB80144db42d1ffd279aa0aeeeb8607e887e5e5775

Add check if vertex and fragment shader can be linked.

===================================================================

M	source/blender/imbuf/IMB_rasterizer.hh

===================================================================

diff --git a/source/blender/imbuf/IMB_rasterizer.hh b/source/blender/imbuf/IMB_rasterizer.hh
index a137631ef9f..56a2aa175ae 100644
--- a/source/blender/imbuf/IMB_rasterizer.hh
+++ b/source/blender/imbuf/IMB_rasterizer.hh
@@ -90,13 +90,14 @@ template<
      *
      * The data type should implement the +=, =, -, / and * operator.
      */
-    typename Data>
+    typename Inner>
 class VertexOutInterface {
  public:
-  using Self = VertexOutInterface<Data>;
+  using InnerType = Inner;
+  using Self = VertexOutInterface<InnerType>;
   /** Coordinate of a vertex inside the image buffer. (0..image_buffer.x, 0..image_buffer.y). */
   float2 coord;
-  Data data;
+  InnerType data;
 
   Self &operator+=(const Self &other)
   {
@@ -240,12 +241,16 @@ template<typename VertexShader,
          typename Statistics = NullStats>
 class Rasterizer {
  public:
-  using RasterlineType = Rasterline<typename FragmentShader::FragmentInputType>;
+  using InterfaceInnerType = typename VertexShader::VertexOutputType::InnerType;
+  using RasterlineType = Rasterline<InterfaceInnerType>;
   using VertexInputType = typename VertexShader::VertexInputType;
   using VertexOutputType = typename VertexShader::VertexOutputType;
   using FragmentInputType = typename FragmentShader::FragmentInputType;
   using FragmentOutputType = typename FragmentShader::FragmentOutputType;
 
+  /** Check if the vertex shader and the fragment shader can be linked together. */
+  static_assert(std::is_same_v<InterfaceInnerType, FragmentInputType>);
+
  private:
   VertexShader vertex_shader_;
   FragmentShader fragment_shader_;
@@ -463,8 +468,8 @@ class Rasterizer {
   std::optional<RasterlineType> clamped_rasterline(int32_t y,
                                                    float start_x,
                                                    float end_x,
-                                                   FragmentInputType start_data,
-                                                   FragmentInputType end_data)
+                                                   InterfaceInnerType start_data,
+                                                   InterfaceInnerType end_data)
   {
     BLI_assert(start_x <= end_x);
     BLI_assert(y >= 0 && y < image_buffer_->y);