public static void Bind(NativeTexture tex, int texUnit = 0)
{
if (!texInit)
{
InitTextureFields();
}
if (curBound[texUnit] == tex)
{
return;
}
if (activeTexUnit != texUnit)
{
GL.ActiveTexture(texUnits[texUnit]);
}
activeTexUnit = texUnit;
if (tex == null)
{
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.Disable(EnableCap.Texture2D);
curBound[texUnit] = null;
}
else
{
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, tex.Handle);
curBound[texUnit] = tex;
}
}
private void SetupNonMultisampled()
{
// Generate FBO
if (this.handleMainFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMainFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
GL.Ext.FramebufferTexture2D(
FramebufferTarget.FramebufferExt,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Generate or delete depth renderbuffer
if (this.depthBuffer)
{
if (this.handleDepthRBO == 0)
{
GL.Ext.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.RenderbufferStorage(RenderbufferTarget.RenderbufferExt, RenderbufferStorage.DepthComponent24, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
}
else
{
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, 0);
if (this.handleDepthRBO != 0)
{
GL.Ext.DeleteRenderbuffers(1, ref this.handleDepthRBO);
}
this.handleDepthRBO = 0;
}
// Check status
FramebufferErrorCode status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, 0);
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
}
private void FinishMaterial(BatchInfo material)
{
DrawTechnique tech = material.Technique.Res;
this.SetupBlendType(BlendMode.Reset);
NativeShaderProgram.Bind(null as NativeShaderProgram);
NativeTexture.ResetBinding();
}
private void FinishMaterial(BatchInfo material)
{
DrawTechnique tech = material.Technique.Res;
this.FinishBlendState();
NativeShaderProgram.Bind(null);
NativeTexture.ResetBinding(this.sharedSamplerBindings);
}
private void FinishSharedParameters()
{
NativeTexture.ResetBinding();
this.sharedSamplerBindings = 0;
this.sharedShaderParameters.Clear();
this.activeShaders.Clear();
}
/// <summary>
/// Applies the specified parameter values to all currently active shaders.
/// </summary>
/// <param name="sharedParams"></param>
/// <seealso cref="RetrieveActiveShaders"/>
private void SetupSharedParameters(ShaderParameterCollection sharedParams)
{
this.sharedSamplerBindings = 0;
this.sharedShaderParameters.Clear();
if (sharedParams == null)
{
return;
}
foreach (NativeShaderProgram shader in this.activeShaders)
{
NativeShaderProgram.Bind(shader);
ShaderFieldInfo[] varInfo = shader.Fields;
int[] locations = shader.FieldLocations;
// Setup shared sampler bindings and uniform data
for (int i = 0; i < varInfo.Length; i++)
{
ShaderFieldInfo field = varInfo[i];
int location = locations[i];
if (field.Scope == ShaderFieldScope.Attribute)
{
continue;
}
if (field.Type == ShaderFieldType.Sampler2D)
{
ContentRef <Texture> texRef;
if (!sharedParams.TryGetInternal(field.Name, out texRef))
{
continue;
}
NativeTexture.Bind(texRef, this.sharedSamplerBindings);
GL.Uniform1(location, this.sharedSamplerBindings);
this.sharedSamplerBindings++;
}
else
{
float[] data;
if (!sharedParams.TryGetInternal(field.Name, out data))
{
continue;
}
NativeShaderProgram.SetUniform(field, location, data);
}
this.sharedShaderParameters.Add(field.Name);
}
}
NativeShaderProgram.Bind(null);
}
private void SetupMaterial(BatchInfo material, BatchInfo lastMaterial)
{
if (material == lastMaterial)
{
return;
}
DrawTechnique tech = material.Technique.Res ?? DrawTechnique.Solid.Res;
DrawTechnique lastTech = lastMaterial != null ? lastMaterial.Technique.Res : null;
// Prepare Rendering
if (tech.NeedsPreparation)
{
material = new BatchInfo(material);
tech.PrepareRendering(this.currentDevice, material);
}
// Setup BlendType
if (lastTech == null || tech.Blending != lastTech.Blending)
{
this.SetupBlendType(tech.Blending, this.currentDevice.DepthWrite);
}
// Bind Shader
NativeShaderProgram shader = (tech.Shader.Res != null ? tech.Shader.Res.Native : null) as NativeShaderProgram;
NativeShaderProgram.Bind(shader);
// Setup shader data
if (shader != null)
{
ShaderFieldInfo[] varInfo = shader.Fields;
int[] locations = shader.FieldLocations;
int[] builtinIndices = shader.BuiltinVariableIndex;
// Setup sampler bindings automatically
int curSamplerIndex = 0;
if (material.Textures != null)
{
for (int i = 0; i < varInfo.Length; i++)
{
if (locations[i] == -1)
{
continue;
}
if (varInfo[i].Type != ShaderFieldType.Sampler2D)
{
continue;
}
// Bind Texture
ContentRef <Texture> texRef = material.GetTexture(varInfo[i].Name);
NativeTexture.Bind(texRef, curSamplerIndex);
GL.Uniform1(locations[i], curSamplerIndex);
curSamplerIndex++;
}
}
NativeTexture.ResetBinding(curSamplerIndex);
// Transfer uniform data from material to actual shader
if (material.Uniforms != null)
{
for (int i = 0; i < varInfo.Length; i++)
{
if (locations[i] == -1)
{
continue;
}
float[] data = material.GetUniform(varInfo[i].Name);
if (data == null)
{
continue;
}
NativeShaderProgram.SetUniform(ref varInfo[i], locations[i], data);
}
}
// Specify builtin shader variables, if requested
float[] fieldValue = null;
for (int i = 0; i < builtinIndices.Length; i++)
{
if (BuiltinShaderFields.TryGetValue(this.currentDevice, builtinIndices[i], ref fieldValue))
{
NativeShaderProgram.SetUniform(ref varInfo[i], locations[i], fieldValue);
}
}
}
// Setup fixed function data
else
{
// Fixed function texture binding
if (material.Textures != null)
{
int samplerIndex = 0;
foreach (var pair in material.Textures)
{
NativeTexture.Bind(pair.Value, samplerIndex);
samplerIndex++;
}
NativeTexture.ResetBinding(samplerIndex);
}
else
{
NativeTexture.ResetBinding();
}
}
}
void INativeRenderTarget.Setup(IReadOnlyList <INativeTexture> targets, AAQuality multisample)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (targets == null)
{
return;
}
if (targets.Count == 0)
{
return;
}
if (targets.All(i => i == null))
{
return;
}
int highestAALevel = MathF.RoundToInt(MathF.Log(MathF.Max(MaxRenderTargetSamples, 1.0f), 2.0f));
int targetAALevel = highestAALevel;
switch (multisample)
{
case AAQuality.High: targetAALevel = highestAALevel; break;
case AAQuality.Medium: targetAALevel = highestAALevel / 2; break;
case AAQuality.Low: targetAALevel = highestAALevel / 4; break;
case AAQuality.Off: targetAALevel = 0; break;
}
int targetSampleCount = MathF.RoundToInt(MathF.Pow(2.0f, targetAALevel));
GraphicsMode sampleMode =
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.LastOrDefault(m => m.Samples <= targetSampleCount) ??
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.Last();
this.samples = sampleMode.Samples;
// Synchronize target information
{
this.targetInfos.Reserve(targets.Count);
int localIndex = 0;
for (int i = 0; i < targets.Count; i++)
{
if (targets[i] == null)
{
continue;
}
this.targetInfos.Count = Math.Max(this.targetInfos.Count, localIndex + 1);
this.targetInfos.Data[localIndex].Target = targets[i] as NativeTexture;
localIndex++;
}
}
#region Setup FBO & RBO: Non-multisampled
if (this.samples == 0)
{
// Generate FBO
if (this.handleMainFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMainFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
GL.Ext.FramebufferTexture2D(
FramebufferTarget.FramebufferExt,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Generate Depth Renderbuffer
if (this.handleDepthRBO == 0)
{
GL.Ext.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.RenderbufferStorage(RenderbufferTarget.RenderbufferExt, RenderbufferStorage.DepthComponent24, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
// Check status
FramebufferErrorCode status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, 0);
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
}
#endregion
#region Setup FBO & RBO: Multisampled
if (this.samples > 0)
{
// Generate texture target FBO
if (this.handleMainFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMainFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
GL.Ext.FramebufferTexture2D(
FramebufferTarget.FramebufferExt,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Check status
FramebufferErrorCode status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
// Generate rendering FBO
if (this.handleMsaaFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMsaaFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMsaaFBO);
// Attach color renderbuffers
for (int i = 0; i < this.targetInfos.Count; i++)
{
TargetInfo info = this.targetInfos.Data[i];
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
RenderbufferStorage rbColorFormat = TexFormatToRboFormat(info.Target.Format);
if (info.HandleMsaaColorRBO == 0)
{
GL.GenRenderbuffers(1, out info.HandleMsaaColorRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, info.HandleMsaaColorRBO);
GL.Ext.RenderbufferStorageMultisample(RenderbufferTarget.RenderbufferExt, this.samples, rbColorFormat, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, attachment, RenderbufferTarget.RenderbufferExt, info.HandleMsaaColorRBO);
this.targetInfos.Data[i] = info;
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
// Attach depth renderbuffer
if (this.handleDepthRBO == 0)
{
GL.Ext.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.RenderbufferStorageMultisample(RenderbufferTarget.RenderbufferExt, this.samples, RenderbufferStorage.DepthComponent24, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, 0);
// Check status
status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Multisample Framebuffer: {0}", status));
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
}
#endregion
}
private void SetupMaterial(BatchInfo material, BatchInfo lastMaterial)
{
DrawTechnique tech = material.Technique.Res ?? DrawTechnique.Solid.Res;
DrawTechnique lastTech = lastMaterial != null ? lastMaterial.Technique.Res : null;
// Setup BlendType
if (lastTech == null || tech.Blending != lastTech.Blending)
{
this.SetupBlendState(tech.Blending);
}
// Bind Shader
NativeShaderProgram nativeShader = tech.NativeShader as NativeShaderProgram;
NativeShaderProgram.Bind(nativeShader);
// Setup shader data
ShaderFieldInfo[] varInfo = nativeShader.Fields;
int[] locations = nativeShader.FieldLocations;
// Setup sampler bindings and uniform data
int curSamplerIndex = this.sharedSamplerBindings;
for (int i = 0; i < varInfo.Length; i++)
{
ShaderFieldInfo field = varInfo[i];
int location = locations[i];
if (field.Scope == ShaderFieldScope.Attribute)
{
continue;
}
if (this.sharedShaderParameters.Contains(field.Name))
{
continue;
}
if (field.Type == ShaderFieldType.Sampler2D)
{
ContentRef <Texture> texRef = material.GetInternalTexture(field.Name);
if (texRef == null)
{
this.internalShaderState.TryGetInternal(field.Name, out texRef);
}
NativeTexture.Bind(texRef, curSamplerIndex);
GL.Uniform1(location, curSamplerIndex);
curSamplerIndex++;
}
else
{
float[] data = material.GetInternalData(field.Name);
if (data == null && !this.internalShaderState.TryGetInternal(field.Name, out data))
{
continue;
}
NativeShaderProgram.SetUniform(field, location, data);
}
}
NativeTexture.ResetBinding(curSamplerIndex);
}