void IEffect::UseCustomTexture(Texture* texture)
{
Uniform CustomTexture;
std::ostringstream toSTR; toSTR << "uTex" << TextureUnits;
CustomTexture.Name = toSTR.str();
CustomTexture.Type = DataType::Int;
CustomTexture.Usage = PostEffects::Other;
CustomTexture.SetValue(&TextureUnits);
AddUniform(CustomTexture);
// Set RTT Order
RTTOrder.push_back(RTT::Info(texture, RTT::CustomTexture, TextureUnits));
TextureUnits++;
}
void IEffect::UseLastRTT()
{
Uniform RTT;
std::ostringstream toSTR; toSTR << "uTex" << TextureUnits;
RTT.Name = toSTR.str();
RTT.Type = DataType::Int;
RTT.Usage = PostEffects::Other;
RTT.SetValue(&TextureUnits);
AddUniform(RTT);
// Set RTT Order
RTTOrder.push_back(RTT::Info(RTT::LastRTT, TextureUnits));
TextureUnits++;
}
void IEffect::UseColor()
{
Uniform Color;
std::ostringstream toSTR; toSTR << "uTex" << TextureUnits;
Color.Name = toSTR.str();
Color.Type = DataType::Int;
Color.Usage = PostEffects::Other;
Color.SetValue(&TextureUnits);
AddUniform(Color);
// Set RTT Order
RTTOrder.push_back(RTT::Info(RTT::Color, TextureUnits));
TextureUnits++;
}
void IEffect::UseDepth()
{
Uniform Depth;
std::ostringstream toSTR; toSTR << "uTex" << TextureUnits;
Depth.Name = toSTR.str();
Depth.Type = DataType::Int;
Depth.Usage = PostEffects::Other;
Depth.SetValue(&TextureUnits);
AddUniform(Depth);
// Set RTT Order
RTTOrder.push_back(RTT::Info(RTT::Depth, TextureUnits));
TextureUnits++;
}
DepthOfFieldEffect::DepthOfFieldEffect(Texture* texture1, Texture* texture2, const uint32 Width, const uint32 Height) : IEffect(Width, Height)
{
// Set RTT
UseCustomTexture(texture1);
UseCustomTexture(texture2);
UseRTT(RTT::Color);
UseRTT(RTT::Depth);
// Create Fragment Shader
FragmentShaderString =
"float DecodeNativeDepth(float native_z, vec4 z_info_local)\n"
"{\n"
"return z_info_local.z / (native_z * z_info_local.w + z_info_local.y);\n"
"}\n"
"uniform sampler2D uTex0, uTex1, uTex2, uTex3;\n"
"uniform float uFocalPosition, uFocalRange, uRatioL, uRatioH;\n"
"uniform vec2 uNearFar;\n"
"varying vec2 vTexcoord;\n"
"void main() {\n"
"float ratioL = uRatioL;\n"
"float ratioH = uRatioH;\n"
"float focalPosition = uFocalPosition;\n"
"float focalRange = uFocalRange;\n"
"vec4 z_info_local = vec4(uNearFar.x,uNearFar.y,uNearFar.x*uNearFar.y,uNearFar.x-uNearFar.y);\n"
"float depth = texture2D(uTex3, vTexcoord).x;\n"
"float linearDepth = DecodeNativeDepth(depth, z_info_local);\n"
"float ratio = clamp(abs(focalPosition-linearDepth)-focalRange, 0.0, ratioL);\n"
"if (ratio < 0.4) gl_FragColor = mix(texture2D(uTex2, vTexcoord), texture2D(uTex1, vTexcoord), ratio / (ratioL - ratioH));\n"
"else gl_FragColor = mix(texture2D(uTex1, vTexcoord), texture2D(uTex0, vTexcoord), (ratio-ratioH) / (ratioL - ratioH));\n"
"}";
CompileShaders();
Uniform nearFarPlane;
nearFarPlane.Name = "uNearFar";
nearFarPlane.Type = DataType::Vec2;
nearFarPlane.Usage = PostEffects::NearFarPlane;
AddUniform(nearFarPlane);
f32 fPosition = 20.f;
f32 fRange = 2.f;
f32 rL = 3.1f;
f32 rH = 1.0f;
Uniform focalPosition;
Uniform focalRange;
Uniform ratioL;
Uniform ratioH;
focalPosition.Name = "uFocalPosition";
focalPosition.Type = DataType::Float;
focalPosition.Usage = PostEffects::Other;
focalPosition.SetValue(&fPosition);
focalRange.Name = "uFocalRange";
focalRange.Type = DataType::Float;
focalRange.Usage = PostEffects::Other;
focalRange.SetValue(&fRange);
ratioL.Name = "uRatioL";
ratioL.Type = DataType::Float;
ratioL.Usage = PostEffects::Other;
ratioL.SetValue(&rL);
ratioH.Name = "uRatioH";
ratioH.Type = DataType::Float;
ratioH.Usage = PostEffects::Other;
ratioH.SetValue(&rH);
AddUniform(focalPosition);
AddUniform(focalRange);
AddUniform(ratioL);
AddUniform(ratioH);
}
