From 781b0465795fb80404e2790be2d10bfb1f7149aa Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Thu, 19 Nov 2015 19:00:42 -0500
Subject: gl_shader_gen: Add support for D0 LUT scaling.

---
 src/video_core/renderer_opengl/gl_rasterizer.h   | 4 +++-
 src/video_core/renderer_opengl/gl_shader_gen.cpp | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/video_core/renderer_opengl')

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
index 2042be786..72ded8f22 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -90,6 +90,7 @@ struct PicaShaderConfig {
         res.lighting.lut_d0.enable = regs.lighting.lut_enable_d0 == 0;
         res.lighting.lut_d0.abs_input = regs.lighting.abs_lut_input.d0 == 0;
         res.lighting.lut_d0.type = (Pica::Regs::LightingLutInput)regs.lighting.lut_input.d0.Value();
+        res.lighting.lut_d0.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d0);
         res.lighting.clamp_highlights = regs.lighting.clamp_highlights != 0;
 
         return res;
@@ -130,7 +131,8 @@ struct PicaShaderConfig {
                 bool enable = false;
                 bool abs_input = false;
                 Pica::Regs::LightingLutInput type = Pica::Regs::LightingLutInput::NH;
-            } lut_d0;
+                float scale = 1.0f;
+            } lut_d0, lut_d1, lut_fr;
         } lighting;
     };
 };
diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp
index a2770cc6e..9044a3813 100644
--- a/src/video_core/renderer_opengl/gl_shader_gen.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp
@@ -412,7 +412,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
         std::string d0_lut_value = "1.0";
         if (config.lighting.lut_d0.enable) {
             std::string d0_lut_index = GetLutIndex(light_config.num, config.lighting.lut_d0.type, config.lighting.lut_d0.abs_input);
-            d0_lut_value = GetLutValue(Regs::LightingSampler::Distribution0, d0_lut_index);
+            d0_lut_value = "(" + std::to_string(config.lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, d0_lut_index) + ")";
         }
 
         // Compute secondary fragment color (specular lighting) function
-- 
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