mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 07:38:42 +02:00
176 lines
4.8 KiB
C#
176 lines
4.8 KiB
C#
using Ryujinx.Graphics.GAL;
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using Ryujinx.Graphics.Shader;
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using OpenTK.Graphics.OpenGL;
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namespace Ryujinx.Graphics.OpenGL
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{
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class Program : IProgram
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{
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private const int StageShift = 5;
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private const int SbStageShift = 4;
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public int Handle { get; private set; }
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public bool IsLinked { get; private set; }
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private int[] _ubBindingPoints;
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private int[] _sbBindingPoints;
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private int[] _textureUnits;
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public Program(IShader[] shaders)
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{
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_ubBindingPoints = new int[32 * 6];
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_sbBindingPoints = new int[16 * 6];
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_textureUnits = new int[32 * 6];
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for (int index = 0; index < _ubBindingPoints.Length; index++)
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{
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_ubBindingPoints[index] = -1;
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}
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for (int index = 0; index < _sbBindingPoints.Length; index++)
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{
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_sbBindingPoints[index] = -1;
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}
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for (int index = 0; index < _textureUnits.Length; index++)
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{
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_textureUnits[index] = -1;
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}
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Handle = GL.CreateProgram();
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for (int index = 0; index < shaders.Length; index++)
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{
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int shaderHandle = ((Shader)shaders[index]).Handle;
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GL.AttachShader(Handle, shaderHandle);
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}
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GL.LinkProgram(Handle);
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CheckProgramLink();
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Bind();
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int extraBlockindex = GL.GetUniformBlockIndex(Handle, "Extra");
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if (extraBlockindex >= 0)
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{
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GL.UniformBlockBinding(Handle, extraBlockindex, 0);
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}
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int ubBindingPoint = 1;
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int sbBindingPoint = 0;
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int textureUnit = 0;
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for (int index = 0; index < shaders.Length; index++)
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{
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Shader shader = (Shader)shaders[index];
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foreach (BufferDescriptor descriptor in shader.Info.CBuffers)
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{
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int location = GL.GetUniformBlockIndex(Handle, descriptor.Name);
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if (location < 0)
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{
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continue;
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}
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GL.UniformBlockBinding(Handle, location, ubBindingPoint);
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int bpIndex = (int)shader.Stage << StageShift | descriptor.Slot;
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_ubBindingPoints[bpIndex] = ubBindingPoint;
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ubBindingPoint++;
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}
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foreach (BufferDescriptor descriptor in shader.Info.SBuffers)
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{
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int location = GL.GetProgramResourceIndex(Handle, ProgramInterface.ShaderStorageBlock, descriptor.Name);
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if (location < 0)
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{
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continue;
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}
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GL.ShaderStorageBlockBinding(Handle, location, sbBindingPoint);
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int bpIndex = (int)shader.Stage << SbStageShift | descriptor.Slot;
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_sbBindingPoints[bpIndex] = sbBindingPoint;
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sbBindingPoint++;
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}
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int samplerIndex = 0;
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foreach (TextureDescriptor descriptor in shader.Info.Textures)
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{
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int location = GL.GetUniformLocation(Handle, descriptor.Name);
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if (location < 0)
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{
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continue;
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}
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GL.Uniform1(location, textureUnit);
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int uIndex = (int)shader.Stage << StageShift | samplerIndex++;
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_textureUnits[uIndex] = textureUnit;
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textureUnit++;
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}
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}
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}
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public void Bind()
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{
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GL.UseProgram(Handle);
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}
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public int GetUniformBufferBindingPoint(ShaderStage stage, int index)
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{
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return _ubBindingPoints[(int)stage << StageShift | index];
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}
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public int GetStorageBufferBindingPoint(ShaderStage stage, int index)
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{
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return _sbBindingPoints[(int)stage << SbStageShift | index];
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}
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public int GetTextureUnit(ShaderStage stage, int index)
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{
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return _textureUnits[(int)stage << StageShift | index];
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}
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private void CheckProgramLink()
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{
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int status = 0;
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GL.GetProgram(Handle, GetProgramParameterName.LinkStatus, out status);
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if (status == 0)
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{
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// throw new System.Exception(GL.GetProgramInfoLog(Handle));
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}
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else
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{
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IsLinked = true;
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}
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}
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public void Dispose()
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{
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if (Handle != 0)
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{
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GL.DeleteProgram(Handle);
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Handle = 0;
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}
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}
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}
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}
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