private void OnPostUseShader(ShaderProgramBase shader)
{
if (!_enabled)
{
return;
}
if (!shader.includes.Contains("shadowcoords.vsh"))
{
return;
}
shader.Uniform("cameraWorldPosition", _mod.Uniforms.CameraWorldPosition);
}
// ReSharper disable once InconsistentNaming
public static void UsePostfix(ShaderProgramBase __instance)
{
VolumetricShadingMod.Instance.Events.EmitPostUseShader(__instance);
}
private void OnUseShader(ShaderProgramBase shader)
{
if (!_softShadowsEnabled)
{
return;
}
if (!shader.includes.Contains("fogandlight.fsh"))
{
return;
}
if (ExcludedShaders.Contains(shader.PassName))
{
return;
}
if (ShaderProgramBase.shadowmapQuality <= 0)
{
return;
}
const string uniformFar = "shadowMapFarTex";
const string uniformNear = "shadowMapNearTex";
const string uniformShadowFar = "shadowMapFar";
const string uniformShadowNear = "shadowMapNear";
if (!shader.customSamplers.ContainsKey(uniformFar))
{
var lookupSamplers = new int[2];
for (var i = 0; i < lookupSamplers.Length; i++)
{
var s = lookupSamplers[i] = GL.GenSampler();
GL.SamplerParameter(s, SamplerParameterName.TextureCompareMode, (int)TextureCompareMode.None);
GL.SamplerParameter(s, SamplerParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.SamplerParameter(s, SamplerParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.SamplerParameter(s, SamplerParameterName.TextureBorderColor, new [] { 1f, 1f, 1f, 1f });
GL.SamplerParameter(s, SamplerParameterName.TextureWrapS, (int)TextureWrapMode.ClampToBorder);
GL.SamplerParameter(s, SamplerParameterName.TextureWrapT, (int)TextureWrapMode.ClampToBorder);
}
// emulate old texture lookup, because new lookup disables internal sampler parameters
var oldSamplers = new int[2];
for (var i = 0; i < oldSamplers.Length; ++i)
{
var s = oldSamplers[i] = GL.GenSampler();
GL.SamplerParameter(s, SamplerParameterName.TextureCompareMode, (int)TextureCompareMode.CompareRToTexture);
GL.SamplerParameter(s, SamplerParameterName.TextureCompareFunc, (int)DepthFunction.Lequal);
GL.SamplerParameter(s, SamplerParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.SamplerParameter(s, SamplerParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.SamplerParameter(s, SamplerParameterName.TextureBorderColor, new [] { 1f, 1f, 1f, 1f });
GL.SamplerParameter(s, SamplerParameterName.TextureWrapS, (int)TextureWrapMode.ClampToBorder);
GL.SamplerParameter(s, SamplerParameterName.TextureWrapT, (int)TextureWrapMode.ClampToBorder);
}
shader.customSamplers[uniformFar] = lookupSamplers[0];
shader.customSamplers[uniformNear] = lookupSamplers[1];
shader.customSamplers[uniformShadowFar] = oldSamplers[0];
shader.customSamplers[uniformShadowNear] = oldSamplers[1];
}
var fbs = _mod.CApi.Render.FrameBuffers;
var fbFar = fbs[(int)EnumFrameBuffer.ShadowmapFar];
var fbNear = fbs[(int)EnumFrameBuffer.ShadowmapNear];
shader.BindTexture2D(uniformFar, fbFar.DepthTextureId);
shader.BindTexture2D(uniformNear, fbNear.DepthTextureId);
shader.BindTexture2D(uniformShadowFar, fbFar.DepthTextureId);
shader.BindTexture2D(uniformShadowNear, fbNear.DepthTextureId);
}
public void EmitPostUseShader(ShaderProgramBase shader)
{
PostUseShader?.Invoke(shader);
}
