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 -------|-------|-------- render<em>coordinates | depth</em>coordinates | texture_coordinates

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