private void PrepareShaderProgram()
{
if (program != null)
{
return;
}
// TODO: We need to tweak shadow quality settings
var lightSourceAvailable = lightSource != null;
var spec = new CommonMaterialProgramSpec {
SkinEnabled = skinEnabled,
DiffuseTextureEnabled = diffuseTexture != null,
FogMode = FogMode,
ProcessLightning = ProcessLightning,
RecieveShadows = RecieveShadows,
ShadowMapSize = lightSourceAvailable ? lightSource.ShadowMapSize : IntVector2.Zero,
SmoothShadows = true,
HighQualitySmoothShadows = lightSourceAvailable && lightSource.ShadowMapQuality > ShadowMapTextureQuality.Medium
};
if (programCache.TryGetValue(spec, out program))
{
return;
}
program = new CommonMaterialProgram(spec);
programCache[spec] = program;
}
private static Sampler[] GetSamplers(CommonMaterialProgramSpec spec)
{
return(new[] {
new Sampler {
Name = "u_DiffuseTexture", Stage = DiffuseTextureStage
}
});
}
private static Shader[] GetShaders(CommonMaterialProgramSpec spec)
{
var preamble = BuildPreamble(spec);
return(new Shader[] {
new VertexShader(preamble + VertexShader),
new FragmentShader(preamble + FragmentShader)
});
}
private static string BuildPreamble(CommonMaterialProgramSpec spec)
{
var preamble = "";
if (spec.ShadowRenderingMode)
{
preamble += "#define SHADOWS_RENDERING_MODE\n";
}
if (spec.SkinEnabled)
{
preamble += "#define SKIN_ENABLED\n";
}
if (spec.DiffuseTextureEnabled)
{
preamble += "#define DIFFUSE_TEXTURE_ENABLED\n";
}
switch (spec.SkinningMode)
{
case SkinningMode.Linear:
preamble += "#define LINEAR_SKINNING\n";
break;
case SkinningMode.DualQuaternion:
preamble += "#define DUAL_QUATERNION_SKINNING\n";
break;
}
if (spec.FogMode != FogMode.None)
{
preamble += "#define FOG_ENABLED\n";
if (spec.FogMode == FogMode.Linear)
{
preamble += "#define FOG_LINEAR\n";
}
else if (spec.FogMode == FogMode.Exp)
{
preamble += "#define FOG_EXP\n";
}
else if (spec.FogMode == FogMode.ExpSquared)
{
preamble += "#define FOG_EXP_SQUARED\n";
}
}
return(preamble);
}
private void PrepareShaderProgram()
{
if (program != null)
{
return;
}
var spec = new CommonMaterialProgramSpec {
SkinEnabled = skinEnabled,
DiffuseTextureEnabled = diffuseTexture != null,
FogMode = FogMode
};
if (programCache.TryGetValue(spec, out program))
{
return;
}
program = new CommonMaterialProgram(spec);
programCache[spec] = program;
}
public CommonMaterialProgram(CommonMaterialProgramSpec spec)
: base(GetShaders(spec), GetAttribLocations(), GetSamplers(spec))
{
}