Quads, QuadStrip, const attributes and half-float attributes support (#447)

* Quads, QuadStrip and const attributes support

* Add support for half float attributes and fix texture pitch alignment

* Throw when an unsupported float type is used as const attribute aswell

1 files changed, 32 insertions, 1 deletions

diff --git a/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs b/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
index a74aee07..7b435c45 100644
--- a/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
+++ b/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
@@ -119,6 +119,18 @@ namespace Ryujinx.Graphics.Gal.OpenGL
             GL.BufferData(BufferTarget.ElementArrayBuffer, Length, HostAddress, BufferUsageHint.StreamDraw);
         }
 
+        public void CreateIbo(long Key, int DataSize, byte[] Buffer)
+        {
+            int Handle = GL.GenBuffer();
+
+            IboCache.AddOrUpdate(Key, Handle, (uint)DataSize);
+
+            IntPtr Length = new IntPtr(Buffer.Length);
+
+            GL.BindBuffer(BufferTarget.ElementArrayBuffer, Handle);
+            GL.BufferData(BufferTarget.ElementArrayBuffer, Length, Buffer, BufferUsageHint.StreamDraw);
+        }
+
         public void SetIndexArray(int Size, GalIndexFormat Format)
         {
             IndexBuffer.Type = OGLEnumConverter.GetDrawElementsType(Format);
@@ -135,7 +147,26 @@ namespace Ryujinx.Graphics.Gal.OpenGL
                 return;
             }
 
-            GL.DrawArrays(OGLEnumConverter.GetPrimitiveType(PrimType), First, Count);
+            if (PrimType == GalPrimitiveType.Quads)
+            {
+                for (int Offset = 0; Offset < Count; Offset += 4)
+                {
+                    GL.DrawArrays(PrimitiveType.TriangleFan, First + Offset, 4);
+                }
+            }
+            else if (PrimType == GalPrimitiveType.QuadStrip)
+            {
+                GL.DrawArrays(PrimitiveType.TriangleFan, First, 4);
+
+                for (int Offset = 2; Offset < Count; Offset += 2)
+                {
+                    GL.DrawArrays(PrimitiveType.TriangleFan, First + Offset, 4);
+                }
+            }
+            else
+            {
+                GL.DrawArrays(OGLEnumConverter.GetPrimitiveType(PrimType), First, Count);
+            }
         }
 
         public void DrawElements(long IboKey, int First, int VertexBase, GalPrimitiveType PrimType)