/// <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();
}
}
}
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);
}
