From 4f8d152b1810bbfb2900de6520dbf9df93f9a67d Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 30 Dec 2019 01:27:42 -0300
Subject: gl_state_tracker: Implement dirty flags for point sizes

---
 src/video_core/renderer_opengl/gl_rasterizer.cpp    | 21 +++++++++++++++++----
 src/video_core/renderer_opengl/gl_state_tracker.cpp |  7 +++++++
 src/video_core/renderer_opengl/gl_state_tracker.h   |  1 +
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 7ffb8fa09..ec1936927 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -1267,12 +1267,25 @@ void RasterizerOpenGL::SyncTransformFeedback() {
 }
 
 void RasterizerOpenGL::SyncPointState() {
-    const auto& regs = system.GPU().Maxwell3D().regs;
+    auto& gpu = system.GPU().Maxwell3D();
+    auto& flags = gpu.dirty.flags;
+    if (!flags[Dirty::PointSize]) {
+        return;
+    }
+    flags[Dirty::PointSize] = false;
+
+    oglEnable(GL_POINT_SPRITE, gpu.regs.point_sprite_enable);
+
+    if (gpu.regs.vp_point_size.enable) {
+        // By definition of GL_POINT_SIZE, it only matters if GL_PROGRAM_POINT_SIZE is disabled.
+        glEnable(GL_PROGRAM_POINT_SIZE);
+        return;
+    }
+
     // Limit the point size to 1 since nouveau sometimes sets a point size of 0 (and that's invalid
     // in OpenGL).
-    oglEnable(GL_PROGRAM_POINT_SIZE, regs.vp_point_size.enable);
-    oglEnable(GL_POINT_SPRITE, regs.point_sprite_enable);
-    glPointSize(std::max(1.0f, regs.point_size));
+    glPointSize(std::max(1.0f, gpu.regs.point_size));
+    glDisable(GL_PROGRAM_POINT_SIZE);
 }
 
 void RasterizerOpenGL::SyncPolygonOffset() {
diff --git a/src/video_core/renderer_opengl/gl_state_tracker.cpp b/src/video_core/renderer_opengl/gl_state_tracker.cpp
index 538ab97e0..8bb827ac5 100644
--- a/src/video_core/renderer_opengl/gl_state_tracker.cpp
+++ b/src/video_core/renderer_opengl/gl_state_tracker.cpp
@@ -205,6 +205,12 @@ void SetupDirtyFragmentClampColor(Tables& tables) {
     tables[0][OFF(frag_color_clamp)] = FragmentClampColor;
 }
 
+void SetupDirtyPointSize(Tables& tables) {
+    tables[0][OFF(vp_point_size)] = PointSize;
+    tables[0][OFF(point_size)] = PointSize;
+    tables[0][OFF(point_sprite_enable)] = PointSize;
+}
+
 void SetupDirtyMisc(Tables& tables) {
     auto& table = tables[0];
 
@@ -241,6 +247,7 @@ void StateTracker::Initialize() {
     SetupDirtyFramebufferSRGB(tables);
     SetupDirtyLogicOp(tables);
     SetupDirtyFragmentClampColor(tables);
+    SetupDirtyPointSize(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 db92a2e5c..90b17a7d6 100644
--- a/src/video_core/renderer_opengl/gl_state_tracker.h
+++ b/src/video_core/renderer_opengl/gl_state_tracker.h
@@ -70,6 +70,7 @@ enum : u8 {
     FramebufferSRGB,
     LogicOp,
     FragmentClampColor,
+    PointSize,
 
     Last
 };
-- 
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