Render

Render Process

1. Normal object

2. Skybox

3. Particle

4. PostProcess

1. HDR

2. Bloom

3. FXAA

5. Box(ui) draw

6. Text Draw

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1. Normal Object Draw

• Object draw to G-Buffer(4 texture : position, color, normal, depth)

• Objects depth draw per Object -> create shadow mapping texture

• Use 1 texture (8192 x 6144)

Light	Size	Num Limit
Directional Light	1024 x 1024	8
Spot Light	512 x 512	32
Point Light	128 x 128	32
Deferred Light	None	INF

* Draw screen with above 5 textures
> Position Texture     ──┐
> Color Texture        ──┤
> Depth Texture        ──┤
> Shadow Texture       ──┤       ┌── Bloom Texture
> Deferred Light Info  ──┴───────┴── Screen Texture

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2. Skybox Draw

• draw skybox with 6 texture

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3. Particle draw

• Draw particles in premade updated particles with instancing

• Instancing (Use same model & different color, pos, size)

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4. PostProcess

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4.1 HDR (mipmap)

• Genereate Mipmap of screen

• Get Pixel(float color) from 1x1 Mipmap ans use it(Exposure) for HDR

• Reference : https://learnopengl.com/Advanced-Lighting/HDR

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4.2 Bloom (do blooming)

• blooming bloom texture n(9) times

• Use Bloom Texture created after light pass

• And Combine screen & bloom result

• Reference : https://learnopengl.com/Advanced-Lighting/Bloom

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4.3 FXAA (Anti-aliasing)

Reference :

https://github.com/McNopper/OpenGL/blob/master/Example42

https://www.geeks3d.com/20110405/fxaa-fast-approximate-anti-aliasing-demo-glsl-opengl-test-radeon-geforce/3/

http://developer.download.nvidia.com/assets/gamedev/files/sdk/11/FXAA_WhitePaper.pdf

http://iryoku.com/aacourse/downloads/09-FXAA-3.11-in-15-Slides.pdf

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5. box(ui) draw

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6. Text Draw

Use text Texture

Reference : http://www.opengl-tutorial.org/kr/intermediate-tutorials/tutorial-11-2d-text/