70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#pragma once
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#include <stdint.h>
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#include "datatypes.cpp"
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#include "helpers.cpp"
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#include "buffer.cpp"
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namespace UwU {
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// shader prototype
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class Shader {
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public:
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//COLOR Shader
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Shader(Color color) {
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this->shaderType = COLOR;
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this->c0 = color;
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}
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//HGRADIENT or VGRADIENT shader
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Shader(Direction direction, uint16_t uv0, uint16_t uv1, Color c0, Color c1) {
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this->c0 = c0;
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this->c1 = c1;
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switch (direction) {
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case H:
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shaderType = HGRADIENT;
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this->u0 = uv0;
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this->scale = 0xffffffff / (1 + (uint32_t)uv1 - (uint32_t)uv0);
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break;
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case V:
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shaderType = VGRADIENT;
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this->v0 = uv0;
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this->scale = 0xffffffff / (1 + (uint32_t)uv1 - (uint32_t)uv0);
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break;
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}
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}
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// BUFFER shader
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Shader(uint16_t u, uint16_t v, Buffer buffer) {
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this->shaderType = BUFFER;
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this->u0 = u;
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this->v0 = v;
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this->buffer = buffer;
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}
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ShaderType shaderType;
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uint16_t u0;
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uint16_t v0;
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Color c0;
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Color c1;
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uint32_t scale;
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Buffer buffer;
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};
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class ShaderMethods {
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public:
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static Color gradient(uint16_t uv0, uint32_t scale, Color c0, Color c1, uint16_t xy) {
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uint32_t t = (((uint32_t)xy - (uint32_t)uv0) * scale) / 0x01000000;
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return Helpers::lerpColor(c0, c1, (uint8_t)t);
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}
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static Color buffer(uint16_t u0, uint16_t v0, Buffer buffer, uint16_t x, uint16_t y) {
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size_t i = ((size_t)y - (size_t)v0) * buffer.stride + ((size_t)x - (size_t)u0) * 4;
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uint8_t b = buffer.pixels[i + 0];
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uint8_t g = buffer.pixels[i + 1];
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uint8_t r = buffer.pixels[i + 2];
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uint8_t a = buffer.pixels[i + 3];
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return Color(r, g, b, a);
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}
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};
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} |