From 13afd0e5b0a5e84f2a979515185ece5b54d3fed4 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 30 Dec 2019 00:53:53 -0300
Subject: [PATCH] gl_state_tracker: Implement dirty flags for sRGB

---
 src/video_core/renderer_opengl/gl_rasterizer.cpp    | 10 ++++++++--
 src/video_core/renderer_opengl/gl_state_tracker.cpp |  5 +++++
 src/video_core/renderer_opengl/gl_state_tracker.h   |  6 ++++++
 src/video_core/renderer_opengl/gl_texture_cache.cpp |  1 +
 src/video_core/renderer_opengl/renderer_opengl.cpp  |  1 +
 5 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index a650113ca..47ad834aa 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -1301,8 +1301,14 @@ void RasterizerOpenGL::SyncAlphaTest() {
 }
 
 void RasterizerOpenGL::SyncFramebufferSRGB() {
-    const auto& regs = system.GPU().Maxwell3D().regs;
-    oglEnable(GL_FRAMEBUFFER_SRGB, regs.framebuffer_srgb);
+    auto& gpu = system.GPU().Maxwell3D();
+    auto& flags = gpu.dirty.flags;
+    if (!flags[Dirty::FramebufferSRGB]) {
+        return;
+    }
+    flags[Dirty::FramebufferSRGB] = false;
+
+    oglEnable(GL_FRAMEBUFFER_SRGB, gpu.regs.framebuffer_srgb);
 }
 
 } // namespace OpenGL
diff --git a/src/video_core/renderer_opengl/gl_state_tracker.cpp b/src/video_core/renderer_opengl/gl_state_tracker.cpp
index ebfb1945f..a99a94aff 100644
--- a/src/video_core/renderer_opengl/gl_state_tracker.cpp
+++ b/src/video_core/renderer_opengl/gl_state_tracker.cpp
@@ -193,6 +193,10 @@ void SetupDirtyRasterizeEnable(Tables& tables) {
     tables[0][OFF(rasterize_enable)] = RasterizeEnable;
 }
 
+void SetupDirtyFramebufferSRGB(Tables& tables) {
+    tables[0][OFF(framebuffer_srgb)] = FramebufferSRGB;
+}
+
 void SetupDirtyMisc(Tables& tables) {
     auto& table = tables[0];
 
@@ -226,6 +230,7 @@ void StateTracker::Initialize() {
     SetupDirtyPolygonOffset(tables);
     SetupDirtyMultisampleControl(tables);
     SetupDirtyRasterizeEnable(tables);
+    SetupDirtyFramebufferSRGB(tables);
     SetupDirtyMisc(tables);
 
     auto& store = dirty.on_write_stores;
diff --git a/src/video_core/renderer_opengl/gl_state_tracker.h b/src/video_core/renderer_opengl/gl_state_tracker.h
index 73a63d31d..7cba66359 100644
--- a/src/video_core/renderer_opengl/gl_state_tracker.h
+++ b/src/video_core/renderer_opengl/gl_state_tracker.h
@@ -67,6 +67,7 @@ enum : u8 {
     PolygonOffset,
     MultisampleControl,
     RasterizeEnable,
+    FramebufferSRGB,
 
     Last
 };
@@ -153,6 +154,11 @@ public:
         flags[OpenGL::Dirty::RasterizeEnable] = true;
     }
 
+    void NotifyFramebufferSRGB() {
+        auto& flags = system.GPU().Maxwell3D().dirty.flags;
+        flags[OpenGL::Dirty::FramebufferSRGB] = true;
+    }
+
 private:
     Core::System& system;
 };
diff --git a/src/video_core/renderer_opengl/gl_texture_cache.cpp b/src/video_core/renderer_opengl/gl_texture_cache.cpp
index 81ab95604..d8a2bf9eb 100644
--- a/src/video_core/renderer_opengl/gl_texture_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_texture_cache.cpp
@@ -523,6 +523,7 @@ void TextureCacheOpenGL::ImageBlit(View& src_view, View& dst_view,
     state_tracker.NotifyBlend0();
     state_tracker.NotifyFramebuffer();
     state_tracker.NotifyRasterizeEnable();
+    state_tracker.NotifyFramebufferSRGB();
 
     if (dst_params.srgb_conversion) {
         glEnable(GL_FRAMEBUFFER_SRGB);
diff --git a/src/video_core/renderer_opengl/renderer_opengl.cpp b/src/video_core/renderer_opengl/renderer_opengl.cpp
index 41378978d..f8b6f98f7 100644
--- a/src/video_core/renderer_opengl/renderer_opengl.cpp
+++ b/src/video_core/renderer_opengl/renderer_opengl.cpp
@@ -588,6 +588,7 @@ void RendererOpenGL::DrawScreen(const Layout::FramebufferLayout& layout) {
     state_tracker.NotifyStencilTest();
     state_tracker.NotifyPolygonOffset();
     state_tracker.NotifyRasterizeEnable();
+    state_tracker.NotifyFramebufferSRGB();
 
     program_manager.UseVertexShader(vertex_program.handle);
     program_manager.UseGeometryShader(0);