gfx-backend-gl

OpenGL backend for gfx.

Can only be used on non-Apple Unix systems. The WSI is hard-coded to EGL.

Note: the Instance, Surface, PhysicalDevice, Device, and Queue can only have their methods called on the thread where Instance was created(!). Recording command buffers is free-threaded.

Normalized Coordinates

Render	Depth	Texture

Binding Model

Dimensions of the model:

1. Register type: uniform buffers, storage buffers, and combined texture-samplers
2. Binding slot (0 .. MAX_COMBINED_TEXTURE_IMAGE_UNITS for textures)

GLSL Mirroring

Texture Kind	GLSL sampler
D1	gsampler1D, sampler1DShadow
D1Array	gsampler1DArray, sampler1DArrayShadow
D2	gsampler2D, gsampler2DMS, sampler2DShadow
D2Array	gsampler2DArray, gsampler2DMSArray, sampler2DArrayShadow
D3	gsampler3D
Cube	gsamplerCube, samplerCubeShadow
CubeArray	gsamplerCubeArray, samplerCubeArrayShadow

Buffer resource views are seen as gsamplerBuffer.

Rust basic type	GLSL (1.3 and above)
i32	int
u32	uint
f32	float
f64	double