Examples

Most of the examples require shader/texture/mesh data to be loaded. When running examples your current directory should be examples/runtime.

<bgfx_path>/examples/runtime $ ../../.build/<config>/bin/example-00-helloworldDebug

00-helloworld

Initialization and debug text.

01-cubes

Rendering simple static mesh.

02-metaballs

Rendering with transient buffers and embedding shaders.

Downloading...

03-raymarch

Updating shader uniforms.

04-mesh

Loading meshes.

05-instancing

Geometry instancing.

06-bump

Loading textures.

07-callback

Implementing application specific callbacks for taking screen shots, caching OpenGL binary shaders, and video capture.

08-update

Updating textures.

09-hdr

Using multiple views with frame buffers, and view order remapping.

10-font

Use the font system to display text and styled text.

11-fontsdf

Use a single distance field font to render text of various size.

12-lod

Mesh LOD transitions.

13-stencil

Stencil reflections and shadows.

14-shadowvolumes

Shadow volumes.

15-shadowmaps-simple

16-shadowmaps

17-drawstress

60Hz

Draw stress is CPU stress test to show what is the maximum number of draw calls while maintaining 60Hz frame rate. bgfx currently has default limit of 64K draw calls per frame. You can increase this limit by changing BGFX_CONFIG_MAX_DRAW_CALLS.

CPU	Renderer	GPU	Arch/Compiler/OS	Dim	Calls
i7-4770K 4.2	GL2.1	2xGTX780	x64/VS2013/Win 8.1	51	132651
i7-4770K 4.2	DX11	2xGTX780	x64/VS2013/Win 8.1	50	125000
i7-4790K 4.0	GL2.1	GTX970	x64/VS2015/Win 10	47	103823
i7-4790K 4.0	DX11	GTX970	x64/VS2015/Win 10	45	91125
i7-4790K 4.0	DX9	GTX970	x64/VS2013/Win 10	40	64000
i5-3570 3.8	NV 331.49	GTX560Ti	x64/GCC/Linux	40	64000+
i7-920 2.66	GL2.1	GTX650Ti	x64/VS2008/Win 7	38	54872
i7-920 2.66	GL2.1	GTX650Ti	x86/VS2008/Win 7	38	54872
i7-6700K 4.0	GL2.1	Skylake GT2	x64/GCC/Win 10	38	54872
i7-4790K 4.0	DX11	R7 240	x64/VS2015/Win 10	36	46656
i7-920 2.66	NV 331.113	GTX650Ti	x64/GCC/Linux	34	39304
i7-6700K 4.0	DX11	Skylake GT2	x64/GCC/Win 10	34	39304
i7-4790K 4.0	DX9	R7 240	x64/VS2015/Win 10	32	32768
i7-920 2.66	DX9	GTX650Ti	x64/GCC/Win 7	32	32768
i7-920 2.66	DX9	GTX650Ti	x64/VS2008/Win 7	32	32768
i7-920 2.66	DX9	GTX650Ti	x86/GCC/Win 7	30	27000
i7-920 2.66	DX9	GTX650Ti	x86/VS2008/Win 7	30	27000
i5-6200U 2.3	DX11	Intel 520	x64/GCC/Win 10	30	27000
i5-4250U 1.3	GL2.1	HD5000	x64/Clang/OSX 10.9	28	21852
Q8200 2.33	NV 319.32	GTX260	x64/GCC/Linux	27	19683
i7-6700K 4.0	GL2.1	Skylake GT2	x64/GCC/Linux	27	19683
i7-2600K 3.4	DX9	AMD6800	x64/VS2012/Win 7	27	19683
i7-2600K 3.4	GL2.1	AMD6800	x64/VS2012/Win 7	26	17576
i7-4770R 3.2	Mesa 10.5.9	HD5200	x64/GCC/Linux	26	17576
i5-6200U 2.3	GL	Intel 520	x64/GCC/Win 10	26	17576
i7-920 2.66	DX9-Wine	GTX650Ti	x64/GCC/Linux	24	13824
i5-6200U 2.3	Mesa 10.5.9	Intel 520	x64/GCC/Linux	23	12167
i7-4750HQ 2.0	Mesa 10.0.1	HD5200	x64/GCC/Linux	22	10648
i7-4750HQ 2.0	Mesa 10.1.3	HD5200	x64/GCC/Linux	21	9261
i7-920 2.66	ES2-ANGLE	GTX650Ti	x86/VS2008/Win 7	21	9261
Q8200 2.33	Gallium 0.4	AMD5770	x64/GCC/Linux	21	9261
i5-4250U 1.3	ES2	HD5000	JIT/Clang/PNaCl 31	21	9261
i5-4250U 1.3	ES2	HD5000	x86/GCC/NaCl 31	20	8000
Q8200 2.33	Gallium 0.4	GTX260	x64/GCC/Linux	19	6859
i5-2450M 2.5	Mesa 10.2.0	HD3000	x64/GCC/Linux	19	6859
i7-920 2.66	ES2-PowerVR	GTX650Ti	x86/VS2008/Win 7	18	5832
i7-920 2.66	FF27-GL	GTX650Ti	JIT/Clang/W7-asm.js	17	4913
i7-6700K 4.0	DX9	Skylake GT2	x64/GCC/Win 10	16	4096
i7-4750HQ 2.0	Mesa 8.0.5	LLVMPIPE	x64/GCC/Linux	16	4096
i5-6200U 2.3	DX9	Intel 520	x64/GCC/Win 10	16	4096
i7-920 2.66	ES2-Qualcomm	GTX650Ti	x86/VS2008/Win 7	15	3375
i7-920 2.66	ES2	GTX650Ti	x64/GCC/NaCl 31	15	3375
i7-920 2.66	ES2	GTX650Ti	JIT/Clang/PNaCl 31	15	3375
Q8200 2.33	NV 319.32	GTX260	x64/GCC/NaCl 31	15	3375
Q8200 2.33	NV 319.32	GTX260	x64/GCC/PNaCl 31	15	3375
‘12 Nexus 7	ES2	Tegra3	ARM/GCC/Android	15	3375
i5-4250U 1.3	ES2-FF27	HD5000	JIT/Clang/OSX-asm.js	15	3375
i5-4250U 1.3	Chrome33	HD5000	JIT/Clang/OSX-asm.js	15	3375
iPad mini 2	ES2	PVR G6430	ARM64/Clang/iOS7	15	3375
i7-920 2.66	Chrome33	GTX650Ti	JIT/Clang/W7-asm.js	14	2744
i7-920 2.66	FF27-ANGLE	GTX650Ti	JIT/Clang/W7-asm.js	14	2744
‘13 Nexus 10	ES2	Mali T604	ARM/GCC/Android	13	2197
iPhone 5	ES2	PVR SGX543	ARM/Clang/iOS7	13	2197
‘13 Nexus 7	ES2	S4 Pro	ARM/GCC/Android	12	1728
iPad 2	ES2	PVR SGX543	ARM/Clang/iOS6	12	1728
AMD A4-5000	Gallium 0.4	HD8330/Kabini	x64/GCC/Linux	12	1728
Xperia Z	ES2	Adreno320	ARM/GCC/Android	11	1331
iPod 4	ES2	PVR SGX535	ARM/Clang/iOS6	7	343
i7-920 2.66	ES2-Mali	GTX650Ti	x86/VS2008/Windows7	6	216
Creator CI20	ES2	PVR SGX540	MIPS/GCC/Debian8	7	343
i5-6200U 2.3	ES2	SwiftShader	x64/GCC/Linux	6	216
RaspberryPi	ES2	VC IV	ARM/GCC/Raspbian	6	216

To test browsers in 60Hz mode following changes were made:

• Firefox 27 about:config adjustments: webgl.prefer-native-gl true (on Windows), and layout.frame_rate 500.

• Chrome 33 command line option: --disable-gpu-vsync.

30Hz (test for browsers)

By default browsers are using vsync, and don’t have option to turn it off programmatically.

CPU	Renderer	GPU	Arch/Compiler/OS	Dim	Calls
i7-920 2.66	GL2.1	GTX650Ti	x64/VS2008/Win7	38	64000+
i5-4250U 1.3	GL2.1	HD5000	x64/Clang/OSX 10.9	36	46656
i5-4250U 1.3	Chrome34	HD5000	JIT/Clang/OSX-PNaCl 31	28	21952
i5-4250U 1.3	Chrome33	HD5000	JIT/Clang/OSX-PNaCl 31	27	19683
i5-4250U 1.3	FF28	HD5000	JIT/Clang/OSX-asm.js	25	15625
i5-4250U 1.3	FF36	HD5000	JIT/Clang/OSX-asm.js	25	15625
i5-4250U 1.3	Chrome41	HD5000	x64/GCC/OSX-NaCl 41	24	13824
i5-4250U 1.3	FF37	HD5000	JIT/Clang/OSX-asm.js	23	12167
i5-4250U 1.3	FF27	HD5000	JIT/Clang/OSX-asm.js	20	8000
i7-920 2.66	Chrome33	GTX650Ti	JIT/Clang/W7-PNaCl 31	20	8000
i7-920 2.66	Chrome34	GTX650Ti	JIT/Clang/W7-asm.js	18	5832
i7-920 2.66	Chrome33	GTX650Ti	JIT/Clang/W7-asm.js	18	5832
i7-920 2.66	FF28	GTX650Ti	JIT/Clang/W7-asm.js	18	5832
i7-920 2.66	FF27	GTX650Ti	JIT/Clang/W7-asm.js	18	5832
i5-4250U 1.3	Safari7	HD5000	JIT/Clang/OSX-asm.js	15	3375

18-ibl

Image-based lighting.

19-oit

Weighted, Blended Order-Independent Transparency

20-nanovg

NanoVG is small antialiased vector graphics rendering library.

21-deferred

MRT rendering and deferred shading.

22-windows

Rendering into multiple windows.

23-vectordisplay

Rendering lines as oldschool vectors.

24-nbody

N-body simulation with compute shaders using buffers.

25-c99

Initialization and debug text with C99 API.

26-occlusion

Using occlusion query for conditional rendering.

27-terrain

Terrain painting example.

28-wireframe

Drawing wireframe mesh.

29-debugdraw

Debug draw.

30-picking

Mouse picking via GPU readback.

31-rsm

Global Illumination with Reflective Shadow Map.

32-particles

Particles.

33-pom

Parallax occlusion mapping.

Reference(s):

• Exploring bump mapping with WebGL

34-mvs

Multiple vertex streams.

35-dynamic

Dynamic buffers update.

36-sky

Perez dynamic sky model.

37-gpudrivenrendering

GPU-Driven Rendering.

Reference(s):

• Experiments in GPU-based occlusion culling,

• Experiments in GPU-based occlusion culling part 2: MultiDrawIndirect and mesh lodding,

• Porting GPU driven occlusion culling to bgfx.

38-bloom

Bloom.

Reference(s):

• Next Generation Post Processing in Call of Duty: Advanced Warfare.

39-assao

Adaptive Screen Space Ambient Occlusion.

Reference(s):

• Adaptive Screen Space Ambient Occlusion.

40-svt

Sparse Virtual Textures.

41-tess

Adaptive GPU Tessellation with Compute Shaders

Reference(s):

• Adaptive GPU Tessellation with Compute Shaders by Jad Khoury, Jonathan Dupuy, and Christophe Riccio.

42-bunnylod

Simple Polygon Reduction

Reference(s):

• Simple Polygon Reduction.

• A Simple, Fast,and Effective Polygon Reduction Algorithm.

43-denoise

Denoise

Reference(s):

• Spatiotemporal Variance-Guided Filtering: Real-Time Reconstruction for Path-Traced Global Illumination..

• Streaming G-Buffer Compression for Multi-Sample Anti-Aliasing.

• Edge-Avoiding À-Trous Wavelet Transform for fast Global Illumination Filtering.

44-sss

Screen-Space Shadows

45-bokeh

Bokeh Depth of Field

Reference(s):

• Bokeh depth of field in a single pass.

46-fsr

AMD FidelityFX Super Resolution - high-quality solution for producing high resolution frames from lower resolution inputs.

47-pixelformats

Pixel Formats

View and test texture formats

48-drawindirect

Draw Indirect

Simple example of indirect rendering + an implementation of multidraw indirect

Reference(s):

• OpenGL MultiDrawIndirect with per-instance textures.

• Indirect Rendering - A way to a million draw calls.

49-hextile

Realtime Hex-Tiling

Simple example of how to use Hex-tiling in real time, ported from https://github.com/mmikk/hextile-demo

Reference(s):

• Hex-Tiling demo.

• Paper explaining concepts -.