Crate webgl2 

WebGL2 Shader Compiler and Emulator

A complete toolchain for compiling GLSL shaders to WebAssembly with DWARF debugging, including a software rasterizer for shader emulation and TypeScript harness generation.

Modules

• naga_wasm_backend - Compile Naga IR to WASM with DWARF debug information
• wasm_gl_emu - Software rasterizer and WASM shader runtime
• glsl_introspection - GLSL parser with annotation extraction
• js_codegen - TypeScript harness code generator

Re-exports

pub use glsl_introspection::ResourceManifest;

pub use js_codegen::generate_harness;

pub use naga_wasm_backend::BackendError;

pub use naga_wasm_backend::WasmBackend;

pub use naga_wasm_backend::WasmBackendConfig;

pub use naga_wasm_backend::WasmModule;

pub use wasm_gl_emu::RuntimeError;

Modules

glsl_introspection

GLSL Annotation Parser and Resource Manifest Generator

js_codegen

TypeScript/JavaScript Harness Code Generator

naga_wasm_backend

Naga IR to WebAssembly Backend with DWARF Debug Information

wasm_gl_emu

WebGL2 Software Rasterizer and WASM Shader Runtime

webgl2_context

Functions

js_execute_shader

js_log

js_print

wasm_alloc

Allocate memory from WASM linear memory. Returns pointer (0 on failure; sets last_error).

wasm_create_context

Create a new WebGL2 context. Returns context handle (0 on failure; sets last_error).

wasm_ctx_active_texture

Set the active texture unit.

wasm_ctx_attach_shader

Attach a shader to a program.

wasm_ctx_bind_attrib_location

Bind attribute location.

wasm_ctx_bind_buffer

Bind a buffer.

wasm_ctx_bind_framebuffer

Bind a framebuffer. Returns errno.

wasm_ctx_bind_renderbuffer

wasm_ctx_bind_texture

Bind a texture. Returns errno.

wasm_ctx_bind_vertex_array

wasm_ctx_buffer_data

Upload data to the bound buffer.

wasm_ctx_buffer_sub_data

Update a subset of the bound buffer’s data.

wasm_ctx_clear

Clear buffers.

wasm_ctx_clear_color

Set the clear color.

wasm_ctx_compile_shader

Compile a shader.

wasm_ctx_create_buffer

Create a buffer.

wasm_ctx_create_framebuffer

Create a framebuffer in the given context. Returns framebuffer handle (0 on failure).

wasm_ctx_create_program

Create a program.

wasm_ctx_create_renderbuffer

wasm_ctx_create_shader

Create a shader.

wasm_ctx_create_texture

Create a texture in the given context. Returns texture handle (0 on failure).

wasm_ctx_create_vertex_array

wasm_ctx_delete_buffer

Delete a buffer.

wasm_ctx_delete_framebuffer

Delete a framebuffer. Returns errno.

wasm_ctx_delete_program

Delete a program.

wasm_ctx_delete_renderbuffer

wasm_ctx_delete_shader

Delete a shader.

wasm_ctx_delete_texture

Delete a texture. Returns errno.

wasm_ctx_delete_vertex_array

wasm_ctx_depth_func

Set the depth function.

wasm_ctx_disable

Disable a capability.

wasm_ctx_disable_vertex_attrib_array

Disable vertex attribute array.

wasm_ctx_draw_arrays

Draw arrays.

wasm_ctx_draw_arrays_instanced

Draw arrays instanced.

wasm_ctx_draw_elements

Draw elements.

wasm_ctx_draw_elements_instanced

Draw elements instanced.

wasm_ctx_enable

Enable a capability.

wasm_ctx_enable_vertex_attrib_array

Enable vertex attribute array.

wasm_ctx_framebuffer_renderbuffer

wasm_ctx_framebuffer_texture2d

Attach a texture to the bound framebuffer. Returns errno.

wasm_ctx_get_attrib_location

Get attribute location.

wasm_ctx_get_buffer_parameter

Get buffer parameter.

wasm_ctx_get_error

Get the last GL error.

wasm_ctx_get_parameter_v

Get a parameter (vector version).

wasm_ctx_get_program_info_log

Get program info log.

wasm_ctx_get_program_parameter

Get program parameter.

wasm_ctx_get_program_wasm

Get the generated WASM for a program’s shader.

wasm_ctx_get_program_wasm_len

Get the length of the generated WASM for a program’s shader.

wasm_ctx_get_shader_info_log

Get shader info log.

wasm_ctx_get_shader_parameter

Get shader parameter.

wasm_ctx_get_uniform_location

Get uniform location.

wasm_ctx_is_vertex_array

wasm_ctx_link_program

Link a program.

wasm_ctx_read_pixels

Read pixels from the bound framebuffer into dest_ptr. dest_ptr/dest_len point to RGBA u8 buffer in WASM linear memory. Returns errno.

wasm_ctx_renderbuffer_storage

wasm_ctx_scissor

Set the scissor box.

wasm_ctx_set_verbosity

Set verbosity level.

wasm_ctx_shader_source

Set shader source.

wasm_ctx_tex_image_2d

Upload pixel data to a texture. ptr/len point to RGBA u8 pixel data in WASM linear memory. Returns errno.

wasm_ctx_tex_parameter_i

Set texture parameters. Returns errno.

wasm_ctx_uniform1f

Set uniform 1f.

wasm_ctx_uniform1i

Set uniform 1i.

wasm_ctx_uniform2f

Set uniform 2f.

wasm_ctx_uniform3f

Set uniform 3f.

wasm_ctx_uniform4f

Set uniform 4f.

wasm_ctx_uniform_matrix_4fv

Set uniform matrix 4fv.

wasm_ctx_use_program

Use a program.

wasm_ctx_vertex_attrib1f

Set vertex attribute default value (1f).

wasm_ctx_vertex_attrib2f

Set vertex attribute default value (2f).

wasm_ctx_vertex_attrib3f

Set vertex attribute default value (3f).

wasm_ctx_vertex_attrib4f

Set vertex attribute default value (4f).

wasm_ctx_vertex_attrib_divisor

Vertex attribute divisor.

wasm_ctx_vertex_attrib_pointer

Vertex attribute pointer.

wasm_ctx_viewport

Set the viewport.

wasm_destroy_context

Destroy a WebGL2 context by handle. Returns errno (0 on success).

wasm_free

Free memory allocated by wasm_alloc. Returns errno (0 on success).

wasm_last_error_len

Get length of last error message in bytes.

wasm_last_error_ptr

Get pointer to last error message (UTF-8).