created buffer shader and added shader logic to rectangle

buffer.cpp

@@ -4,7 +4,7 @@
 
 #include "datatypes.cpp"
 #include "helpers.cpp"
-#include "shader.cpp"
+// #include "shader.cpp"
 
 namespace UwU {
       // Buffer object - can be a wayland surface or a virtual buffer

datatypes.cpp

@@ -26,41 +26,41 @@ namespace UwU {
   };
 
   // Coord2 datatype for xy coordinates, from top-left of surface
-  struct Coord2 {
+  // struct Coord2 {
-    Coord2(uint16_t x, uint16_t y) {
+  //   Coord2(uint16_t x, uint16_t y) {
-      this->x = x;
+  //     this->x = x;
-      this->y = y;
+  //     this->y = y;
-    }
+  //   }
-    Coord2() {}
+  //   Coord2() {}
-    uint16_t x;
+  //   uint16_t x;
-    uint16_t y;
+  //   uint16_t y;
-  };
+  // };
 
   // Vec2 datatype for signed x, y coordinates
-  struct Vec2 {
+  // struct Vec2 {
-    Vec2(int16_t x, int16_t y) {
+  //   Vec2(int16_t x, int16_t y) {
-      this->x = x;
+  //     this->x = x;
-      this->y = y;
+  //     this->y = y;
-    }
+  //   }
-    Vec2() {}
+  //   Vec2() {}
-    int16_t x;
+  //   int16_t x;
-    int16_t y;
+  //   int16_t y;
-  };
+  // };
 
-  // 2x2 matrix, Q15.16 signed fixed point
+  // // 2x2 matrix, Q15.16 signed fixed point
-  struct Matrix4 {
+  // struct Matrix4 {
-    Matrix4(int32_t xx, int32_t xy, int32_t yx, int32_t yy) {
+  //   Matrix4(int32_t xx, int32_t xy, int32_t yx, int32_t yy) {
-      this->xx = xx;
+  //     this->xx = xx;
-      this->xy = xy;
+  //     this->xy = xy;
-      this->yx = yx;
+  //     this->yx = yx;
-      this->yy = yy;
+  //     this->yy = yy;
-    }
+  //   }
-    Matrix4() {}
+  //   Matrix4() {}
-    int32_t xx;  // x' = x*xx + y*xy
+  //   int32_t xx;  // x' = x*xx + y*xy
-    int32_t xy;
+  //   int32_t xy;
-    int32_t yx;  // y' = x*yx + y*yy
+  //   int32_t yx;  // y' = x*yx + y*yy
-    int32_t yy;
+  //   int32_t yy;
-  };
+  // };
 
   // class Mapper {
   //   public:
@@ -74,7 +74,8 @@ namespace UwU {
   enum ShaderType {
     COLOR,
     HGRADIENT,
-    VGRADIENT
+    VGRADIENT,
+    BUFFER
   };
 
   enum Direction {

example.cpp

@@ -32,7 +32,7 @@ static void onKey(void *user, uint32_t keycode, uint32_t state) {
 
 int main(void) {
   uint16_t w = 800, h = 480;
-  UwU::Shader fuchsia = UwU::Shader(UwU::Direction::H, 360, 600, UwU::Color(0xb00b69ff), UwU::Color(0x00000000));
+  UwU::Shader fuchsia = UwU::Shader(UwU::Direction::V, 100, 300, UwU::Color(0xb00b69ff), UwU::Color(0x00000000));
   UwU::Shader red = UwU::Shader(UwU::Direction::V, 69, 420, UwU::Color(0xff0000ff), UwU::Color(0x00000000));
   UwU::Shader warmup = UwU::Shader(UwU::Color(0xb00b69ff));
   UwU::Color green = UwU::Color(0x00ff00ff);
@@ -40,14 +40,17 @@ int main(void) {
   // UwU::Color alpha = UwU::Color(0x00000000);
   
   UwU::Surface surface = UwU::Surface(w, h, onKey);
-  // UwU::Buffer buffer = UwU::Buffer(surface.getWidth(), surface.getHeight());
+  UwU::Buffer buffer = UwU::Buffer(800, 480);
+  UwU::Shader triangleBuffer = UwU::Shader(69, 69, buffer);
   
   UwU::Rectangle rectangle = UwU::Rectangle(69, 69, 420, 420);
   UwU::Trapezoid trapezoid = UwU::Trapezoid(300, 400, 360, 380, 600, 480);
   UwU::Triangle triangle = UwU::Triangle(280, 100, 240, 290, 320, 300);
   UwU::Point point = UwU::Point(387, 43);
 
-  rectangle.draw(surface.buffer, red);
+
+  triangle.draw(buffer, fuchsia);
+  rectangle.draw(surface.buffer, triangleBuffer);
 
   // Benchmarking
   struct timespec start, end;
@@ -75,7 +78,6 @@ int main(void) {
   timeAvg /= BATCH;
   printf("Elapsed: %ld ns\n", timeAvg);
   
-  triangle.draw(surface.buffer, fuchsia);
   
   point.draw(surface.buffer, green);
   

primatives/line.cpp

@@ -5,6 +5,7 @@
 #include "../datatypes.cpp"
 #include "../helpers.cpp"
 #include "../buffer.cpp"
+#include "../shader.cpp"
 
 namespace UwU {
   // line

primatives/point.cpp

@@ -5,6 +5,7 @@
 #include "../datatypes.cpp"
 #include "../helpers.cpp"
 #include "../buffer.cpp"
+#include "../shader.cpp"
 
 namespace UwU {
   // point

primatives/rectangle.cpp

@@ -25,8 +25,8 @@ namespace UwU {
       
       // Draw a rectangle
       void draw (Buffer buffer, Shader shader) {
-        if (shader.shaderType == COLOR) {
         if (x0 > buffer.width || y0 > buffer.height || x1 > buffer.width || y1 > buffer.height) {return;};
+        if (shader.shaderType == COLOR) {
           for (uint16_t y = y0; y < y1; y++) {
             for (uint16_t x = x0; x < x1; x++) {
               buffer.drawPixel(x, y, shader.c0);
@@ -35,7 +35,6 @@ namespace UwU {
           return;
 
         } else if (shader.shaderType == HGRADIENT) {
-          if (x0 > buffer.width || y0 > buffer.height || x1 > buffer.width || y1 > buffer.height) {return;};
 
           // Precompute gradient LUT
           Color cols[x1 - x0];
@@ -51,7 +50,6 @@ namespace UwU {
           return;
           
         } else if (shader.shaderType == VGRADIENT) {
-          if (x0 > buffer.width || y0 > buffer.height || x1 > buffer.width || y1 > buffer.height) {return;};
           for (uint16_t y = y0; y < y1; y++) {
             Color c = ShaderMethods::gradient(shader.v0, shader.scale, shader.c0, shader.c1, y);
             for (uint16_t x = x0; x < x1; x++) {
@@ -59,8 +57,16 @@ namespace UwU {
             }
           }
           return;
-        }
 
+        } else if (shader.shaderType == BUFFER) {
+          for (uint16_t y = y0; y < y1; y++) {
+            for (uint16_t x = x0; x < x1; x++) {
+              buffer.drawPixel(x, y, ShaderMethods::buffer(shader.u0, shader.v0, shader.buffer, x, y));
+            }
+          }
+          return;
+        }
+        return;
       }
   };
 }

primatives/triangle.cpp

@@ -6,6 +6,7 @@
 #include "../datatypes.cpp"
 #include "../helpers.cpp"
 #include "../buffer.cpp"
+#include "../shader.cpp"
 
 namespace UwU {
   class Triangle {

shader.cpp

@@ -35,11 +35,12 @@ namespace UwU {
       }
 
       // BUFFER shader
-      // Shader(uint16_t u, uint16_t v, Buffer buffer) {
+      Shader(uint16_t u, uint16_t v, Buffer buffer) {
-      //   this->shaderType = BUFFER;
+        this->shaderType = BUFFER;
-      //   this->u0 = u;
+        this->u0 = u;
-      //   this->v0 = v;
+        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) {
+      static Color gradient(uint16_t uv0, uint32_t scale, Color c0, Color c1, uint16_t xy) {
-        uint32_t t = (((uint32_t)uv - (uint32_t)uv0) * scale) / 0x01000000;
+        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);
+      }
   };
 }