Color.

src/display/CMakeLists.txt

@@ -7,4 +7,8 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     Display.cpp
-)
+)
+
+# Subdirs
+add_subdirectory(color)
+add_subdirectory(mesh)

src/display/Display.cpp

@@ -8,12 +8,19 @@
 
 using namespace Dawn;
 
+MeshVertex vertices[3] = {
+  { Color4B::RED, glm::vec2(0.0f, 0.0f), glm::vec3(-0.5f, -0.5f, 0.0f) },
+  { Color4B::GREEN, glm::vec2(1.0f, 0.0f), glm::vec3(0.5f, -0.5f, 0.0f) },
+  { Color4B::BLUE, glm::vec2(0.5f, 1.0f), glm::vec3(0.0f, 0.5f, 0.0f) }
+};
+
 Display::Display(Engine &engine) :
   #if DAWN_SDL2
     glContext(nullptr),
     window(nullptr),
   #endif
-  engine(engine)
+  engine(engine),
+  mesh(3, PrimitiveType::Triangles, vertices)
 {
   #if DAWN_SDL2
     uint32_t flags = SDL_INIT_VIDEO;
@@ -99,7 +106,17 @@ void Display::update(void) {
 
     SDL_GL_MakeCurrent(this->window, this->glContext);
 
-    glViewport(0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glClearColor(
+      Color4F::CORNFLOWER_BLUE.r,
+      Color4F::CORNFLOWER_BLUE.g,
+      Color4F::CORNFLOWER_BLUE.b,
+      Color4F::CORNFLOWER_BLUE.a
+    );
+
+    mesh.draw(0, -1);
+
+    // glViewport(0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 
     SDL_GL_SwapWindow(this->window);
   #endif

src/display/Display.hpp

@@ -6,6 +6,8 @@
 #pragma once
 #include "dawn.hpp"
 
+#include "display/mesh/Mesh.hpp"
+
 namespace Dawn {
   struct Engine;
 
@@ -20,6 +22,8 @@ namespace Dawn {
     public:
       static constexpr uint32_t DEFAULT_WIDTH = 800;
       static constexpr uint32_t DEFAULT_HEIGHT = 600;
+      
+      Mesh mesh;
 
       /**
        * Display constructor

src/display/color/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Color3B.cpp
+    Color4B.cpp
+    Color3F.cpp
+    Color4F.cpp
+)

src/display/color/Color.hpp

@@ -0,0 +1,11 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "IColor.hpp"
+#include "Color3B.hpp"
+#include "Color3F.hpp"
+#include "Color4B.hpp"
+#include "Color4F.hpp"

src/display/color/Color3B.cpp

@@ -0,0 +1,32 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Color.hpp"
+
+using namespace Dawn;
+
+Color3B::Color3B(
+  const uint8_t r,
+  const uint8_t g,
+  const uint8_t b
+) : r(r), g(g), b(b) {
+  // Constructor body (if needed)
+}
+
+Color3B Color3B::toColor3B(void) const {
+  return Color3B(r, g, b);
+}
+
+Color4B Color3B::toColor4B(void) const {
+  return Color4B(r, g, b, 255);
+}
+
+Color3F Color3B::toColor3F(void) const {
+  return Color3F(r / 255.0f, g / 255.0f, b / 255.0f);
+}
+
+Color4F Color3B::toColor4F(void) const {
+  return Color4F(r / 255.0f, g / 255.0f, b / 255.0f, 1.0f);
+}

src/display/color/Color3B.hpp

@@ -0,0 +1,46 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "IColor.hpp"
+
+namespace Dawn {
+  struct Color3B : public Color {
+    public:
+      const uint8_t r;
+      const uint8_t g;
+      const uint8_t b;
+
+      /**
+       * Color (RGB, byte) constructor
+       * 
+       * @param r Red channel (0-255)
+       * @param g Green channel (0-255)
+       * @param b Blue channel (0-255)
+       */
+      Color3B(const uint8_t r, const uint8_t g, const uint8_t b);
+
+      /**
+       * Gets this color as a 3-channel byte color.
+       */
+      Color3B toColor3B(void) const override;
+
+      /**
+       * Gets this color as a 4-channel byte color. Alpha is set to 255.
+       */
+      Color4B toColor4B(void) const override;
+
+      /**
+       * Gets this color as a 3-channel float color. (0-1 range)
+       */
+      Color3F toColor3F(void) const override;
+
+      /**
+       * Gets this color as a 4-channel float color. (0-1 range), Alpha is set
+       * to 1.0f
+       */
+      Color4F toColor4F(void) const override;
+  };
+}

src/display/color/Color3F.cpp

@@ -0,0 +1,41 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Color.hpp"
+
+using namespace Dawn;
+
+Color3F::Color3F(
+  const float_t r,
+  const float_t g,
+  const float_t b
+) : r(r), g(g), b(b) {
+}
+
+Color3B Color3F::toColor3B(void) const {
+  return Color3B(
+    static_cast<uint8_t>(r * 255.0f),
+    static_cast<uint8_t>(g * 255.0f),
+    static_cast<uint8_t>(b * 255.0f)
+  );
+}
+
+Color4B Color3F::toColor4B(void) const {
+  return Color4B(
+    static_cast<uint8_t>(r * 255.0f),
+    static_cast<uint8_t>(g * 255.0f),
+    static_cast<uint8_t>(b * 255.0f),
+    255
+  );
+}
+
+Color3F Color3F::toColor3F(void) const {
+  return Color3F(r, g, b);
+}
+
+Color4F Color3F::toColor4F(void) const {
+  return Color4F(r, g, b, 1.0f);
+}
+

src/display/color/Color3F.hpp

@@ -0,0 +1,45 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "IColor.hpp"
+
+namespace Dawn {
+  struct Color3F : public Color {
+    public:
+      const float_t r;
+      const float_t g;
+      const float_t b;
+
+      /**
+       * Color (RGB, float) constructor
+       * 
+       * @param r Red channel (0.0-1.0)
+       * @param g Green channel (0.0-1.0)
+       * @param b Blue channel (0.0-1.0)
+       */
+      Color3F(const float_t r, const float_t g, const float_t b);
+
+      /**
+       * Gets this color as a 3-channel byte color.
+       */
+      Color3B toColor3B(void) const override;
+
+      /**
+       * Gets this color as a 4-channel byte color. Alpha is set to 255.
+       */
+      Color4B toColor4B(void) const override;
+
+      /**
+       * Gets this color as a 3-channel float_t color.
+       */
+      Color3F toColor3F(void) const override;
+
+      /**
+       * Gets this color as a 4-channel float_t color. Alpha is set to 1.0f
+       */
+      Color4F toColor4F(void) const override;
+  };
+}

src/display/color/Color4B.cpp

@@ -0,0 +1,36 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Color.hpp"
+
+using namespace Dawn;
+
+const Color4B Color4B::WHITE        = Color4B(255, 255, 255, 255);
+const Color4B Color4B::BLACK        = Color4B(0, 0, 0, 255);
+const Color4B Color4B::RED          = Color4B(255, 0, 0, 255);
+const Color4B Color4B::GREEN        = Color4B(0, 255, 0, 255);
+const Color4B Color4B::BLUE         = Color4B(0, 0, 255, 255);
+const Color4B Color4B::YELLOW       = Color4B(255, 255, 0, 255);
+const Color4B Color4B::CYAN         = Color4B(0, 255, 255, 255);
+const Color4B Color4B::MAGENTA      = Color4B(255, 0, 255, 255);
+const Color4B Color4B::TRANSPARENT  = Color4B(0, 0, 0, 0);
+const Color4B Color4B::CORNFLOWER_BLUE = Color4B(100, 149, 237, 255);
+
+Color4B::Color4B(
+  const uint8_t r,
+  const uint8_t g,
+  const uint8_t b,
+  const uint8_t a
+) : Color3B(r, g, b), a(a) {
+  // Constructor body (if needed)
+}
+
+Color4B Color4B::toColor4B(void) const {
+  return Color4B(r, g, b, a);
+}
+
+Color4F Color4B::toColor4F(void) const {
+  return Color4F(r / 255.0f, g / 255.0f, b / 255.0f, a / 255.0f);
+}

src/display/color/Color4B.hpp

@@ -0,0 +1,50 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "Color3B.hpp"
+
+namespace Dawn {
+  struct Color4B : public Color3B {
+    public:
+      static const Color4B WHITE;
+      static const Color4B BLACK;
+      static const Color4B RED;
+      static const Color4B GREEN;
+      static const Color4B BLUE;
+      static const Color4B YELLOW;
+      static const Color4B CYAN;
+      static const Color4B MAGENTA;
+      static const Color4B TRANSPARENT;
+      static const Color4B CORNFLOWER_BLUE;
+
+      const uint8_t a;
+
+      /**
+       * Color (RGBA, byte) constructor
+       * 
+       * @param r Red channel (0-255)
+       * @param g Green channel (0-255)
+       * @param b Blue channel (0-255)
+       * @param a Alpha channel (0-255)
+       */
+      Color4B(
+        const uint8_t r,
+        const uint8_t g,
+        const uint8_t b,
+        const uint8_t a
+      );
+
+      /**
+       * Gets this color as a 4-channel byte color.
+       */
+      Color4B toColor4B(void) const override;
+
+      /**
+       * Gets this color as a 4-channel float color. (0-1 range)
+       */
+      Color4F toColor4F(void) const override;
+  };
+}

src/display/color/Color4F.cpp

@@ -0,0 +1,40 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Color.hpp"
+
+using namespace Dawn;
+
+const Color4F Color4F::WHITE        = Color4F(1.0f, 1.0f, 1.0f, 1.0f);
+const Color4F Color4F::BLACK        = Color4F(0.0f, 0.0f, 0.0f, 1.0f);
+const Color4F Color4F::RED          = Color4F(1.0f, 0.0f, 0.0f, 1.0f);
+const Color4F Color4F::GREEN        = Color4F(0.0f, 1.0f, 0.0f, 1.0f);
+const Color4F Color4F::BLUE         = Color4F(0.0f, 0.0f, 1.0f, 1.0f);
+const Color4F Color4F::YELLOW       = Color4F(1.0f, 1.0f, 0.0f, 1.0f);
+const Color4F Color4F::CYAN         = Color4F(0.0f, 1.0f, 1.0f, 1.0f);
+const Color4F Color4F::MAGENTA      = Color4F(1.0f, 0.0f, 1.0f, 1.0f);
+const Color4F Color4F::TRANSPARENT  = Color4F(0.0f, 0.0f, 0.0f, 0.0f);
+const Color4F Color4F::CORNFLOWER_BLUE = Color4F(0.39f, 0.58f, 0.93f, 1.0f);
+
+Color4F::Color4F(
+  const float_t r,
+  const float_t g,
+  const float_t b,
+  const float_t a
+) : Color3F(r, g, b), a(a) {
+}
+
+Color4B Color4F::toColor4B(void) const {
+  return Color4B(
+    static_cast<uint8_t>(r * 255.0f),
+    static_cast<uint8_t>(g * 255.0f),
+    static_cast<uint8_t>(b * 255.0f),
+    static_cast<uint8_t>(a * 255.0f)
+  );
+}
+
+Color4F Color4F::toColor4F(void) const {
+  return Color4F(r, g, b, a);
+}

src/display/color/Color4F.hpp

@@ -0,0 +1,50 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "Color3F.hpp"
+
+namespace Dawn {
+  struct Color4F : public Color3F {
+    public:
+      static const Color4F WHITE;
+      static const Color4F BLACK;
+      static const Color4F RED;
+      static const Color4F GREEN;
+      static const Color4F BLUE;
+      static const Color4F YELLOW;
+      static const Color4F CYAN;
+      static const Color4F MAGENTA;
+      static const Color4F TRANSPARENT;
+      static const Color4F CORNFLOWER_BLUE;
+
+      const float_t a;
+
+      /**
+       * Color (RGBA, float) constructor
+       * 
+       * @param r Red channel (0.0-1.0)
+       * @param g Green channel (0.0-1.0)
+       * @param b Blue channel (0.0-1.0)
+       * @param a Alpha channel (0.0-1.0)
+       */
+      Color4F(
+        const float_t r,
+        const float_t g,
+        const float_t b,
+        const float_t a
+      );
+
+      /**
+       * Gets this color as a 4-channel byte color.
+       */
+      Color4B toColor4B(void) const override;
+
+      /**
+       * Gets this color as a 4-channel float_t color.
+       */
+      Color4F toColor4F(void) const override;
+  };
+}

src/display/color/IColor.hpp

@@ -0,0 +1,37 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawn.hpp"
+
+namespace Dawn {
+  struct Color3B;
+  struct Color4B;
+  struct Color3F;
+  struct Color4F;
+
+  struct Color {
+    public:
+      /**
+       * Gets this color as a 3-channel byte color.
+       */
+      virtual Color3B toColor3B(void) const = 0;
+
+      /**
+       * Gets this color as a 4-channel byte color.
+       */
+      virtual Color4B toColor4B(void) const = 0;
+
+      /**
+       * Gets this color as a 3-channel float color. (0-1 range)
+       */
+      virtual Color3F toColor3F(void) const = 0;
+
+      /**
+       * Gets this color as a 4-channel float color. (0-1 range)
+       */
+      virtual Color4F toColor4F(void) const = 0;
+  };
+}

src/display/mesh/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Mesh.cpp
+)

src/display/mesh/Mesh.cpp

@@ -0,0 +1,73 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Mesh.hpp"
+#include "assert/Assert.hpp"
+
+using namespace Dawn;
+
+Mesh::Mesh(
+  const int32_t vertexCount,
+  const PrimitiveType primitiveType,
+  const MeshVertex *vertices
+) :
+  vertexCount(vertexCount),
+  primitiveType(primitiveType),
+  vertices(vertices)
+{
+
+}
+
+void Mesh::draw(
+  int32_t vertexOffset,
+  int32_t vertexCount
+) const {
+  const int32_t offset = vertexOffset == -1 ? 0 : vertexOffset;
+  const int32_t count = vertexCount == -1 ? this->vertexCount : vertexCount;
+
+  assertNotNull(this->vertices, "Mesh cannot be NULL");
+  assertTrue(offset >= 0, "Vertex offset must be non-negative");
+  assertTrue(count >= 0, "Vertex count must be non-negative");
+  assertTrue(
+    offset + count <= this->vertexCount, 
+    "Vertex offset + count must not exceed vertex count"
+  );
+
+  #if DISPLAY_SDL2
+    // PSP style pointer legacy OpenGL
+    const GLsizei stride = sizeof(MeshVertex);
+
+    glColorPointer(
+      MESH_VERTEX_COLOR_SIZE,
+      GL_UNSIGNED_BYTE,
+      stride,
+      (const GLvoid*)&this->vertices[offset].color[0]
+    );
+
+    glTexCoordPointer(
+      MESH_VERTEX_UV_SIZE,
+      GL_FLOAT,
+      stride,
+      (const GLvoid*)&this->vertices[offset].uv[0]
+    );
+
+    glVertexPointer(
+      MESH_VERTEX_POS_SIZE,
+      GL_FLOAT,
+      stride,
+      (const GLvoid*)&this->vertices[offset].pos[0]
+    );
+    
+    glDrawArrays(
+      this->primitiveType,
+      0,
+      count
+    );
+  #endif
+}
+
+Mesh::~Mesh() {
+
+}

src/display/mesh/Mesh.hpp

@@ -0,0 +1,56 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "PrimitiveType.hpp"
+#include "display/color/Color.hpp"
+
+namespace Dawn {
+  struct MeshVertex {
+    public:
+      #if DAWN_SDL2
+        Color4B color;
+        glm::vec2 uv;
+        glm::vec3 position;
+      #endif
+  };
+
+  struct Mesh {
+    private:
+      const int32_t vertexCount;
+      const PrimitiveType primitiveType;
+      const MeshVertex *vertices;
+
+    public:
+      /**
+       * Mesh constructor
+       * 
+       * @param vertexCount The number of vertices in the mesh
+       * @param primitiveType The type of primitive to render
+       * @param vertices The vertex data
+       */
+      Mesh(
+        const int32_t vertexCount,
+        const PrimitiveType primitiveType,
+        const MeshVertex *vertices
+      );
+      
+      /**
+       * Draw this mesh.
+       * 
+       * @param vertexOffset The offset to start drawing from (default: 0)
+       * @param vertexCount The number of vertices to draw (default: all)
+       */
+      void draw(
+        int32_t vertexOffset = 0,
+        int32_t vertexCount = -1
+      ) const;
+
+      /**
+       * Destructs the mesh.
+       */
+      ~Mesh();
+  };
+}

src/display/mesh/PrimitiveType.hpp

@@ -0,0 +1,17 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawn.hpp"
+
+namespace Dawn {
+  enum class PrimitiveType {
+    #if DAWN_SDL2
+      Triangles = GL_TRIANGLES,
+      Lines = GL_LINES,
+      Points = GL_POINTS,
+    #endif
+  };
+}