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using OpenTK.Graphics.OpenGL;
using System;
using System.Collections.Generic;
namespace Ryujinx.Graphics.Gal.OpenGL
{
public class OpenGLRenderer : IGalRenderer
{
private struct VertexBuffer
{
public int VaoHandle;
public int VboHandle;
public int PrimCount;
}
private struct Texture
{
public int Handle;
}
private List<VertexBuffer> VertexBuffers;
private Texture[] Textures;
private Queue<Action> ActionsQueue;
public long FrameBufferPtr { get; set; }
public OpenGLRenderer()
{
VertexBuffers = new List<VertexBuffer>();
Textures = new Texture[8];
ActionsQueue = new Queue<Action>();
}
public void QueueAction(Action ActionMthd)
{
ActionsQueue.Enqueue(ActionMthd);
}
public void RunActions()
{
while (ActionsQueue.Count > 0)
{
ActionsQueue.Dequeue()();
}
}
public void Render()
{
for (int Index = 0; Index < VertexBuffers.Count; Index++)
{
VertexBuffer Vb = VertexBuffers[Index];
if (Vb.VaoHandle != 0 &&
Vb.PrimCount != 0)
{
GL.BindVertexArray(Vb.VaoHandle);
GL.DrawArrays(PrimitiveType.TriangleStrip, 0, Vb.PrimCount);
}
}
}
public void SendVertexBuffer(int Index, byte[] Buffer, int Stride, GalVertexAttrib[] Attribs)
{
if (Index < 0)
{
throw new ArgumentOutOfRangeException(nameof(Index));
}
if (Buffer.Length == 0 || Stride == 0)
{
return;
}
EnsureVbInitialized(Index);
VertexBuffer Vb = VertexBuffers[Index];
Vb.PrimCount = Buffer.Length / Stride;
VertexBuffers[Index] = Vb;
IntPtr Length = new IntPtr(Buffer.Length);
GL.BindBuffer(BufferTarget.ArrayBuffer, Vb.VboHandle);
GL.BufferData(BufferTarget.ArrayBuffer, Length, Buffer, BufferUsageHint.StreamDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.BindVertexArray(Vb.VaoHandle);
for (int Attr = 0; Attr < 16; Attr++)
{
GL.DisableVertexAttribArray(Attr);
}
foreach (GalVertexAttrib Attrib in Attribs)
{
if (Attrib.Index >= 3) break;
GL.EnableVertexAttribArray(Attrib.Index);
GL.BindBuffer(BufferTarget.ArrayBuffer, Vb.VboHandle);
int Size = 0;
switch (Attrib.Size)
{
case GalVertexAttribSize._8:
case GalVertexAttribSize._16:
case GalVertexAttribSize._32:
Size = 1;
break;
case GalVertexAttribSize._8_8:
case GalVertexAttribSize._16_16:
case GalVertexAttribSize._32_32:
Size = 2;
break;
case GalVertexAttribSize._8_8_8:
case GalVertexAttribSize._11_11_10:
case GalVertexAttribSize._16_16_16:
case GalVertexAttribSize._32_32_32:
Size = 3;
break;
case GalVertexAttribSize._8_8_8_8:
case GalVertexAttribSize._10_10_10_2:
case GalVertexAttribSize._16_16_16_16:
case GalVertexAttribSize._32_32_32_32:
Size = 4;
break;
}
bool Signed =
Attrib.Type == GalVertexAttribType.Snorm ||
Attrib.Type == GalVertexAttribType.Sint ||
Attrib.Type == GalVertexAttribType.Sscaled;
bool Normalize =
Attrib.Type == GalVertexAttribType.Snorm ||
Attrib.Type == GalVertexAttribType.Unorm;
VertexAttribPointerType Type = 0;
switch (Attrib.Type)
{
case GalVertexAttribType.Snorm:
case GalVertexAttribType.Unorm:
case GalVertexAttribType.Sint:
case GalVertexAttribType.Uint:
case GalVertexAttribType.Uscaled:
case GalVertexAttribType.Sscaled:
{
switch (Attrib.Size)
{
case GalVertexAttribSize._8:
case GalVertexAttribSize._8_8:
case GalVertexAttribSize._8_8_8:
case GalVertexAttribSize._8_8_8_8:
{
Type = Signed
? VertexAttribPointerType.Byte
: VertexAttribPointerType.UnsignedByte;
break;
}
case GalVertexAttribSize._16:
case GalVertexAttribSize._16_16:
case GalVertexAttribSize._16_16_16:
case GalVertexAttribSize._16_16_16_16:
{
Type = Signed
? VertexAttribPointerType.Short
: VertexAttribPointerType.UnsignedShort;
break;
}
case GalVertexAttribSize._10_10_10_2:
case GalVertexAttribSize._11_11_10:
case GalVertexAttribSize._32:
case GalVertexAttribSize._32_32:
case GalVertexAttribSize._32_32_32:
case GalVertexAttribSize._32_32_32_32:
{
Type = Signed
? VertexAttribPointerType.Int
: VertexAttribPointerType.UnsignedInt;
break;
}
}
break;
}
case GalVertexAttribType.Float:
{
Type = VertexAttribPointerType.Float;
break;
}
}
GL.VertexAttribPointer(
Attrib.Index,
Size,
Type,
Normalize,
Stride,
Attrib.Offset);
}
GL.BindVertexArray(0);
}
public void SendR8G8B8A8Texture(int Index, byte[] Buffer, int Width, int Height)
{
EnsureTexInitialized(Index);
GL.BindTexture(TextureTarget.Texture2D, Textures[Index].Handle);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexImage2D(TextureTarget.Texture2D,
0,
PixelInternalFormat.Rgba,
Width,
Height,
0,
PixelFormat.Rgba,
PixelType.UnsignedByte,
Buffer);
}
public void BindTexture(int Index)
{
GL.ActiveTexture(TextureUnit.Texture0 + Index);
GL.BindTexture(TextureTarget.Texture2D, Textures[Index].Handle);
}
private void EnsureVbInitialized(int VbIndex)
{
while (VbIndex >= VertexBuffers.Count)
{
VertexBuffers.Add(new VertexBuffer());
}
VertexBuffer Vb = VertexBuffers[VbIndex];
if (Vb.VaoHandle == 0)
{
Vb.VaoHandle = GL.GenVertexArray();
}
if (Vb.VboHandle == 0)
{
Vb.VboHandle = GL.GenBuffer();
}
VertexBuffers[VbIndex] = Vb;
}
private void EnsureTexInitialized(int TexIndex)
{
Texture Tex = Textures[TexIndex];
if (Tex.Handle == 0)
{
Tex.Handle = GL.GenTexture();
}
Textures[TexIndex] = Tex;
}
}
}
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