public ExampleLayer()
{
//Create camera
cameraController = new OrthographicCameraController(1280.0f / 720.0f);
//Shader library
shaderLibrary = new ShaderLibrary();
// ----------
//Square
// ----------
squareVertexArray = IVertexArray.Create();
float[] squareVertices =
{
-0.5f, -0.5f, 0.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.0f, 1.0f, 1.0f,
-0.5f, 0.5f, 0.0f, 0.0f, 1.0f
};
IVertexBuffer squareVertexBuffer = IVertexBuffer.Create(squareVertices, squareVertices.GetBytes());
BufferLayout squareBufferLayout = new BufferLayout(new[]
{
new BufferElement("a_Position", ShaderDataType.Float3),
new BufferElement("a_TexCoord", ShaderDataType.Float2)
});
squareVertexBuffer.SetLayout(squareBufferLayout);
squareVertexArray.AddVertexBuffer(squareVertexBuffer);
uint[] squareIndices = { 0, 1, 2, 2, 3, 0 };
IIndexBuffer squareIndexBuffer =
IIndexBuffer.Create(squareIndices, squareIndices.GetBytes() / sizeof(uint));
squareVertexArray.SetIndexBuffer(squareIndexBuffer);
//Square shader
shaderLibrary.LoadAndAddShader("Shaders/Square.glsl");
//Texture shader
IShader textureShader = IShader.Create("Shaders/Texture.glsl");
shaderLibrary.AddShader(textureShader);
birdiTexture = I2DTexture.Create("Textures/Birdi.png");
faceTexture = I2DTexture.Create("Textures/Face.png");
textureShader.Bind();
textureShader.SetInt("u_Texture", 0);
}
/// <summary>
/// Draws a quad using a texture
/// </summary>
/// <param name="transform"></param>
/// <param name="texture"></param>
/// <param name="tintColor"></param>
/// <param name="tillingFactor"></param>
public static void DrawQuad(Transform transform, I2DTexture texture, Vector4 tintColor, float tillingFactor = 1.0f)
{
rendererData.TextureShader.SetVec4("u_Color", tintColor);
rendererData.TextureShader.SetFloat("u_TilingFactor", tillingFactor);
texture.Bind();
Matrix4x4 shaderTransform = Matrix4x4.CreateTranslation(transform.Position) * Matrix4x4.CreateScale(transform.Scale.X, transform.Scale.Y, 1.0f);
rendererData.TextureShader.SetMat4("u_Transform", shaderTransform);
rendererData.QuadVertexArray.Bind();
RenderingAPI.DrawIndexed(rendererData.QuadVertexArray);
}
/// <summary>
/// Initializes the 2D rendering system
/// </summary>
internal static void Init()
{
ProfilerTimer.Profile(() =>
{
rendererData = new Renderer2DStorage
{
QuadVertexArray = IVertexArray.Create()
};
float[] squareVertices =
{
-0.5f, -0.5f, 0.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.0f, 1.0f, 1.0f,
-0.5f, 0.5f, 0.0f, 0.0f, 1.0f
};
IVertexBuffer squareVertexBuffer = IVertexBuffer.Create(squareVertices, squareVertices.GetBytes());
BufferLayout squareBufferLayout = new BufferLayout(new[]
{
new BufferElement("a_Position", ShaderDataType.Float3),
new BufferElement("a_TexCoord", ShaderDataType.Float2)
});
squareVertexBuffer.SetLayout(squareBufferLayout);
rendererData.QuadVertexArray.AddVertexBuffer(squareVertexBuffer);
uint[] squareIndices = { 0, 1, 2, 2, 3, 0 };
IIndexBuffer squareIndexBuffer =
IIndexBuffer.Create(squareIndices, squareIndices.GetBytes() / sizeof(uint));
rendererData.QuadVertexArray.SetIndexBuffer(squareIndexBuffer);
rendererData.WhiteTexture = I2DTexture.Create(1, 1);
uint whiteTextureData = 0xffffffff;
rendererData.WhiteTexture.SetData(whiteTextureData, sizeof(uint));
rendererData.TextureShader = IShader.Create("Shaders/Texture.glsl");
rendererData.TextureShader.Bind();
rendererData.TextureShader.SetInt("u_Texture", 0);
});
}
/// <summary>
/// Draws a quad rotated
/// </summary>
/// <param name="transform"></param>
/// <param name="tintColor"></param>
/// <param name="texture"></param>
/// <param name="tillingFactor"></param>
public static void DrawRotatedQuad(Transform transform, Vector4 tintColor, I2DTexture texture, float tillingFactor = 1.0f)
{
//If the rotation is only 0, we will call the regular draw quad, to save performance on the rotation calculations
if (transform.Rotation == 0.0f)
{
DrawQuad(transform, texture, tintColor, tillingFactor);
return;
}
rendererData.TextureShader.SetVec4("u_Color", tintColor);
rendererData.TextureShader.SetFloat("u_TilingFactor", tillingFactor);
texture.Bind();
Matrix4x4 shaderTransform = Matrix4x4.CreateTranslation(transform.Position)
* Matrix4x4.CreateRotationZ(transform.Rotation.ToRadian())
* Matrix4x4.CreateScale(transform.Scale.X, transform.Scale.Y, 1.0f);
rendererData.TextureShader.SetMat4("u_Transform", shaderTransform);
rendererData.QuadVertexArray.Bind();
RenderingAPI.DrawIndexed(rendererData.QuadVertexArray);
}
public void OnAttach()
{
cameraController = new OrthographicCameraController(1280.0f / 720.0f);
birdiTexture = I2DTexture.Create("Textures/Birdi.png");
}