Rendertarget attachments, texture and image changes (#358)

* Add multiple color outputs for fragment shaders

* Add registers and gal enums

* Use textures for framebuffers and split color and zeta framebuffers

* Abstract texture and framebuffer targets as an image

* Share images between framebuffers and textures

* Unstub formats

* Add some formats

* Disable multiple attachments

* Cache framebuffer attachments

* Handle format types

* Add some rendertarget formats

* Code cleanup

* Fixup half float types

* Address feedback

* Disable multiple attachments in shaders

* Add A4B4G4R4 image format

* Add reversed section for image enums

1 files changed, 6 insertions, 13 deletions

diff --git a/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs b/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
index b6e97454..45106692 100644
--- a/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
+++ b/Ryujinx.Graphics/Gal/OpenGL/OGLRasterizer.cs
@@ -3,7 +3,7 @@ using System;
 
 namespace Ryujinx.Graphics.Gal.OpenGL
 {
-    public class OGLRasterizer : IGalRasterizer
+    class OGLRasterizer : IGalRasterizer
     {
         private int[] VertexBuffers;
 
@@ -44,36 +44,29 @@ namespace Ryujinx.Graphics.Gal.OpenGL
 
         public void ClearBuffers(
             GalClearBufferFlags Flags,
+            int Attachment,
             float Red, float Green, float Blue, float Alpha,
             float Depth,
             int Stencil)
         {
-            ClearBufferMask Mask = ClearBufferMask.ColorBufferBit;
-
             GL.ColorMask(
                 Flags.HasFlag(GalClearBufferFlags.ColorRed),
                 Flags.HasFlag(GalClearBufferFlags.ColorGreen),
                 Flags.HasFlag(GalClearBufferFlags.ColorBlue),
                 Flags.HasFlag(GalClearBufferFlags.ColorAlpha));
 
+            GL.ClearBuffer(ClearBuffer.Color, Attachment, new float[] { Red, Green, Blue, Alpha });
+
             if (Flags.HasFlag(GalClearBufferFlags.Depth))
             {
-                Mask |= ClearBufferMask.DepthBufferBit;
+                GL.ClearBuffer(ClearBuffer.Depth, 0, ref Depth);
             }
 
             if (Flags.HasFlag(GalClearBufferFlags.Stencil))
             {
-                Mask |= ClearBufferMask.StencilBufferBit;
+                GL.ClearBuffer(ClearBuffer.Stencil, 0, ref Stencil);
             }
 
-            GL.ClearColor(Red, Green, Blue, Alpha);
-
-            GL.ClearDepth(Depth);
-
-            GL.ClearStencil(Stencil);
-
-            GL.Clear(Mask);
-
             GL.ColorMask(true, true, true, true);
         }