implemented shaders, gradients, and uv mapping

buffer.cpp

@@ -5,6 +5,8 @@
 #include "datatypes.cpp"
 #include "helpers.cpp"
 #include "shaders/shader.cpp"
+#include "shaders/colorshader.cpp"
+#include "shaders/gradientshader.cpp"
 
 namespace UwU {
       // Buffer object - can be a wayland surface or a virtual buffer
@@ -44,12 +46,12 @@ namespace UwU {
             return;
         }
 
-        void drawPixelShader(Coord2 coord, Shader shader) {
-            size_t i = (size_t)coord.y * stride + (size_t)coord.x * 4;
+        void drawPixelShader(uint16_t x, uint16_t y, uint16_t u, uint16_t v, Shader& shader) {
+            size_t i = (size_t)y * stride + (size_t)x * 4;
             uint8_t b0 = pixels[i + 0];
             uint8_t g0 = pixels[i + 1];
             uint8_t r0 = pixels[i + 2];
-            Color newColor = shader.color();
+            Color newColor = shader.color(u, v);
             uint8_t b = Helpers::lerp8(b0, newColor.b, newColor.a);
             uint8_t g = Helpers::lerp8(g0, newColor.g, newColor.a);
             uint8_t r = Helpers::lerp8(r0, newColor.r, newColor.a);