GPU States: Implement Polygon Offset. This is used in SMO all the time. (#1784)

* GPU States: Implement Polygon Offset. This is used in SMO all the time.

* Clang Format fixes.

* Initialize polygon_offset in the constructor.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 630a58e49..2d5e65f41 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -620,7 +620,7 @@ void RasterizerOpenGL::DrawArrays() {
     SyncTransformFeedback();
     SyncPointState();
     CheckAlphaTests();
-
+    SyncPolygonOffset();
     // TODO(bunnei): Sync framebuffer_scale uniform here
     // TODO(bunnei): Sync scissorbox uniform(s) here
 
@@ -1179,6 +1179,16 @@ void RasterizerOpenGL::SyncPointState() {
     state.point.size = regs.point_size;
 }
 
+void RasterizerOpenGL::SyncPolygonOffset() {
+    const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
+    state.polygon_offset.fill_enable = regs.polygon_offset_fill_enable != 0;
+    state.polygon_offset.line_enable = regs.polygon_offset_line_enable != 0;
+    state.polygon_offset.point_enable = regs.polygon_offset_point_enable != 0;
+    state.polygon_offset.units = regs.polygon_offset_units;
+    state.polygon_offset.factor = regs.polygon_offset_factor;
+    state.polygon_offset.clamp = regs.polygon_offset_clamp;
+}
+
 void RasterizerOpenGL::CheckAlphaTests() {
     const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;