/// <summary>
///Called by the SceneVisitor in the pre-pass to create the correct fragment shader, whether we render forward or deferred.
/// </summary>
public void CreateFragmentShader(bool doRenderForward)
{
if (doRenderForward)
{
for (int i = 0; i < _effectPasses.Length; i++)
{
var pxBody = new List <string>()
{
LightingShard.LightStructDeclaration,
FragPropertiesShard.FixedNumberLightArray,
FragPropertiesShard.ColorOut(),
LightingShard.AssembleLightingMethods(EffectProps),
FragMainShard.ForwardLighting(EffectProps)
};
PixelShaderSrc[i] = _effectPasses[i].ProtoPS + string.Join("\n", pxBody);
}
}
else
{
for (int i = 0; i < _effectPasses.Length; i++)
{
var pxBody = new List <string>()
{
FragPropertiesShard.GBufferOut(),
FragMainShard.RenderToGBuffer(EffectProps)
};
PixelShaderSrc[i] = _effectPasses[i].ProtoPS + string.Join("\n", pxBody);
States[i].AlphaBlendEnable = false;
States[i].ZEnable = true;
}
}
}
private static string CreateDeferredLightingPixelShader(Light lc, bool isCascaded = false, int numberOfCascades = 0, bool debugCascades = false)
{
var frag = new StringBuilder();
frag.Append(HeaderShard.Version300Es);
frag.Append("#extension GL_ARB_explicit_uniform_location : enable\n");
frag.Append("#extension GL_ARB_gpu_shader5 : enable\n");
frag.Append(HeaderShard.EsPrecisionHighpFloat);
frag.Append(FragPropertiesShard.DeferredTextureUniforms());
frag.Append(FragPropertiesShard.FuseeMatrixUniforms());
frag.Append(LightingShard.LightStructDeclaration);
frag.Append(FragPropertiesShard.DeferredLightAndShadowUniforms(lc, isCascaded, numberOfCascades));
frag.Append(GLSL.CreateIn(GLSL.Type.Vec2, VaryingNameDeclarations.TextureCoordinates));
frag.Append(FragPropertiesShard.ColorOut());
//Shadow calculation methods
//--------------------------------------
if (lc.Type != LightType.Point)
{
frag.Append(LightingShard.ShadowCalculation());
}
else
{
frag.Append(LightingShard.ShadowCalculationCubeMap());
}
//Lighting methods
//------------------------------------------
frag.Append(LightingShard.AmbientComponent());
frag.Append(LightingShard.SpecularComponent());
frag.Append(LightingShard.DiffuseComponent());
frag.Append(LightingShard.AttenuationPointComponent());
frag.Append(LightingShard.AttenuationConeComponent());
frag.Append(LightingShard.ApplyLightDeferred(lc, isCascaded, numberOfCascades, debugCascades));
return(frag.ToString());
}
private static string CreatePixelShader(ShaderEffectProps effectProps)
{
var pixelShader = new List <string>
{
HeaderShard.Version300Es,
HeaderShard.EsPrecisionHighpFloat,
LightingShard.LightStructDeclaration,
FragPropertiesShard.InParams(effectProps),
FragPropertiesShard.FuseeMatrixUniforms(),
FragPropertiesShard.MaterialPropsUniforms(effectProps),
FragPropertiesShard.FixedNumberLightArray,
FragPropertiesShard.ColorOut(),
LightingShard.AssembleLightingMethods(effectProps)
};
//Calculates the lighting for all lights by using the above method
pixelShader.Add(FragMainShard.ForwardLighting(effectProps));
return(string.Join("\n", pixelShader));
}