Annika/UwUGL
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created buffer shader and added shader logic to rectangle

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Annika
2026-07-08 16:50:17 -07:00
parent 43c893984f
commit 89afdfce9b
9 changed files with 73 additions and 50 deletions
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shader.cpp
+18 -7
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@@ -35,11 +35,12 @@ namespace UwU {
}
// BUFFER shader
// Shader(uint16_t u, uint16_t v, Buffer buffer) {
// this->shaderType = BUFFER;
// this->u0 = u;
// this->v0 = v;
// }
Shader(uint16_t u, uint16_t v, Buffer buffer) {
this->shaderType = BUFFER;
this->u0 = u;
this->v0 = v;
this->buffer = buffer;
}
ShaderType shaderType;
uint16_t u0;
@@ -47,13 +48,23 @@ namespace UwU {
Color c0;
Color c1;
uint32_t scale;
Buffer buffer;
};
class ShaderMethods {
public:
static Color gradient(uint16_t uv0, uint32_t scale, Color c0, Color c1, uint16_t uv) {
uint32_t t = (((uint32_t)uv - (uint32_t)uv0) * scale) / 0x01000000;
static Color gradient(uint16_t uv0, uint32_t scale, Color c0, Color c1, uint16_t xy) {
uint32_t t = (((uint32_t)xy - (uint32_t)uv0) * scale) / 0x01000000;
return Helpers::lerpColor(c0, c1, (uint8_t)t);
}
static Color buffer(uint16_t u0, uint16_t v0, Buffer buffer, uint16_t x, uint16_t y) {
size_t i = ((size_t)y - (size_t)v0) * buffer.stride + ((size_t)x - (size_t)u0) * 4;
uint8_t b = buffer.pixels[i + 0];
uint8_t g = buffer.pixels[i + 1];
uint8_t r = buffer.pixels[i + 2];
uint8_t a = buffer.pixels[i + 3];
return Color(r, g, b, a);
}
};
}