Renderer

The Renderer is the main rendering interface exposed to the game. It does not issue immediate draw calls itself — instead it forwards geometry to the Batch Renderer, which is the heart of the graphics pipeline.

Responsibilities: scene management, camera handling, quad submission, text rendering, particle rendering, tilemap rendering, and runtime statistics.

Batch renderer

Rather than drawing every sprite immediately, geometry is accumulated into large GPU buffers and flushed automatically when necessary.

Resource	Limit
Quads	100,000
Vertices	400,000
Indices	600,000
Texture Slots	32*

* Hardware dependent.

Scenes

Renderer::BeginScene(camera);
// ... draw calls ...
Renderer::EndScene();

Drawing textured quads

Renderer::DrawQuad(texture, {100, 100}, {64, 64});

With rotation:

Renderer::DrawQuad(texture, {100, 100}, {64, 64}, 45.0f);

With color tint:

Renderer::DrawQuad(texture, {100, 100}, {64, 64}, 0.0f, {1, 0, 0, 1});

With a custom pivot:

Renderer::DrawQuad(texture, position, size, rotation, color, {0.5f, 0.5f});

With flipping:

Renderer::DrawQuad(
    texture, position, size, 0.0f,
    {1, 1, 1, 1}, {0.5f, 0.5f},
    true, false
);

Drawing colored quads

Solid rectangles can be drawn without creating a texture — internally the renderer uses a built-in 1x1 white texture.

Renderer::DrawColorQuad({200, 100}, {80, 80}, {0, 1, 0, 1});

With rotation:

Renderer::DrawColorQuad(position, size, color, 30.0f);

Statistics

RendererStats stats = Renderer::GetStats();

std::cout << stats.DrawCalls << std::endl;
std::cout << stats.QuadCount << std::endl;