murray2k6/gldirect

How murray2k6/gldirect works

GLDirect is a Windows OpenGL DLL wrapper whose normal workflow accepts an application's WGL context and OpenGL calls, translates supported work into a D3D9 command stream, and submits it to the active D3D9 implementation. OpenGL stages D3D9 cannot represent run in a private Mesa worker; their results are synchronized into the D3D9 stream. The graph preserves the documented fixed-function, shader, resource, advanced-stage, and Remix paths. Most links rely on README statements; sampled source excerpts establish context management and Mesa pipeline behavior, but do not expose the complete runtime call graph.

Main entry points: gld5_driver.c D3D9 Driver · gl_impl.c GL API Dispatch · mesa_proxy.c Mesa Worker · gld_wgl.c WGL Context

Components 19

Windows Entry

OpenGL DLL src/dll_main.c
WGL Context src/gld_wgl.c
Context State src/gld_context.c
GL API Dispatch src/gl46/gl_impl.c

GL Translation

Fixed Function src/gl46/fixed_function_emulator.c
Shader Translation src/gl46/glsl_to_hlsl.c
State Translation src/gl46/state_translator.c
Buffer Manager src/gl46/buffer_manager.c
Texture Manager src/gl46/texture_manager.c
Render Targets src/gl46/render_target_manager.c

Execution Paths

Advanced Emulation src/gl46/advanced_emulation.c
Compute Emulation src/gl46/compute_emulator.c
Mesa Worker src/mesa_proxy.c
Mesa TNL Pipeline mesa/src/mesa/tnl/t_pipeline.c

D3D9 Integration

D3D9 Driver src/dx9/gld5_driver.c
Swap Chain src/gl46/swap_chain.c

Diagnostics

Tracy Client src/tracy_client.cpp

Other components

GL Application
D3D9 Runtime

Connections 25

GL Application → OpenGL DLL: calls OpenGL
OpenGL DLL → WGL Context: exports WGL
WGL Context → Context State: creates and binds
GL Application → GL API Dispatch: issues GL calls
GL API Dispatch → Fixed Function: translates fixed state
GL API Dispatch → Shader Translation: translates GLSL
GL API Dispatch → State Translation: translates state
GL API Dispatch → Buffer Manager: manages buffers
GL API Dispatch → Texture Manager: manages textures
GL API Dispatch → Render Targets: manages targets
Fixed Function → D3D9 Driver: emits D3D9 draws
Shader Translation → D3D9 Driver: emits shaders
State Translation → D3D9 Driver: sets D3D9 state
Buffer Manager → D3D9 Driver: submits geometry
Texture Manager → D3D9 Driver: submits resources
Render Targets → D3D9 Driver: binds render targets
GL API Dispatch → Advanced Emulation: dispatches unsupported stages
Advanced Emulation → Mesa Worker: executes post-vertex work
Compute Emulation → Mesa Worker: executes compute
Mesa Worker → Mesa TNL Pipeline: runs Mesa pipeline
Mesa Worker → D3D9 Driver: submits results
Compute Emulation → D3D9 Driver: syncs writable resources
D3D9 Driver → D3D9 Runtime: sends D3D9 stream
D3D9 Driver → Swap Chain: presents frames
WGL Context → Tracy Client: starts profiling

Drawn by GitDiagram on November 14, 2026 from the repository's file tree, README and source files. Read as Markdown ·