PrimeWorldEditor/resources/shaders/LightBillboardShader.ps

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#version 330 core
// Input
in vec2 TexCoord;
// Output
out vec4 PixelColor;
// Uniforms
uniform sampler2D Texture;
uniform sampler2D LightMask;
uniform vec4 LightColor;
uniform vec4 TintColor;
// Main
void main()
{
vec4 TextureColor = texture(Texture, TexCoord);
if (TextureColor.a < 0.25) discard;
vec4 MaskColor = texture(LightMask, TexCoord);
float MaskValue = (MaskColor.r + MaskColor.g + MaskColor.b) / 3;
vec4 MaskedColor = mix(vec4(1,1,1,1), LightColor, MaskValue);
PixelColor = TextureColor * MaskedColor * TintColor;
PixelColor.a = 0;
}