From ab4867505ec0d3f5a9ec4f042ccd6f7890e3632e Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 29 Mar 2020 00:02:58 -0300
Subject: Implement GPU scissors (#1058)

* Implement GPU scissors

* Remove unused using

* Add missing changes for Clear
---
 Ryujinx.Graphics.OpenGL/Pipeline.cs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'Ryujinx.Graphics.OpenGL/Pipeline.cs')

diff --git a/Ryujinx.Graphics.OpenGL/Pipeline.cs b/Ryujinx.Graphics.OpenGL/Pipeline.cs
index c2a42370..f01e7c7a 100644
--- a/Ryujinx.Graphics.OpenGL/Pipeline.cs
+++ b/Ryujinx.Graphics.OpenGL/Pipeline.cs
@@ -31,10 +31,14 @@ namespace Ryujinx.Graphics.OpenGL
 
         private uint[] _componentMasks;
 
+        private readonly bool[] _scissorEnable;
+
         internal Pipeline()
         {
             _clipOrigin    = ClipOrigin.LowerLeft;
             _clipDepthMode = ClipDepthMode.NegativeOneToOne;
+
+            _scissorEnable = new bool[8];
         }
 
         public void Barrier()
@@ -674,6 +678,25 @@ namespace Ryujinx.Graphics.OpenGL
             }
         }
 
+        public void SetScissorEnable(int index, bool enable)
+        {
+            if (enable)
+            {
+                GL.Enable(IndexedEnableCap.ScissorTest, index);
+            }
+            else
+            {
+                GL.Disable(IndexedEnableCap.ScissorTest, index);
+            }
+
+            _scissorEnable[index] = enable;
+        }
+
+        public void SetScissor(int index, int x, int y, int width, int height)
+        {
+            GL.ScissorIndexed(index, x, y, width, height);
+        }
+
         public void SetStencilTest(StencilTestDescriptor stencilTest)
         {
             if (!stencilTest.TestEnable)
@@ -928,6 +951,17 @@ namespace Ryujinx.Graphics.OpenGL
             }
         }
 
+        public void RestoreScissorEnable()
+        {
+            for (int index = 0; index < 8; index++)
+            {
+                if (_scissorEnable[index])
+                {
+                    GL.Enable(IndexedEnableCap.ScissorTest, index);
+                }
+            }
+        }
+
         public void Dispose()
         {
             _framebuffer?.Dispose();
-- 
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