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skia2/tools/gpu/gl/interface
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Chris Dalton 661abd0f8d Reland "Use GL_ANGLE_instanced_arrays" 
This is a reland of 76b80eca64

Original change's description:
> Use GL_ANGLE_instanced_arrays
>
> It turns out the es2 command buffer has supported instanced rendering
> all along. We just weren't using it! This CL starts using
> GL_ANGLE_instanced_arrays, after which point chrome es2 will start
> taking many of our instanced codepaths. It can even use tessellation if
> we update the shaders to not rely on gl_VertexID.
>
> Bug: chromium:1220246
> Change-Id: I173f4c07771691143d2540ecb9c3f8222ed8e4b3
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/422379
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

Bug: chromium:1220246
Change-Id: I4d6f74adff4e2eda4b55a459faf16b5f5a230d06
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/422616
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2021-06-28 21:49:46 +00:00
..
gen_interface.go Reland "Get EGLimage functions out of GrGLInterface." 2019-05-15 19:58:45 +00:00
interface.json5 Reland "Use GL_ANGLE_instanced_arrays" 2021-06-28 21:49:46 +00:00
Makefile Reland "Generate GrGLInterface and GrGlAssembleInterface* from table" 2019-03-26 10:55:00 +00:00
README.md Reland "Generate GrGLInterface and GrGlAssembleInterface* from table" 2019-03-26 10:55:00 +00:00
templates.go Don't cast emscripten pointers when assembling WebGL interface 2020-09-30 14:31:07 +00:00

README.md

GrGlInterface Autogeneration

Background

At a high level, the first three steps of making a GrGLInterface (a generic way to interact with a GL-like GPU) are:

  • Assemble: Copy a set of function pointers into the struct
  • Validate: Make sure the function pointers advertised actually exist.
  • Capabilities: Compute what fast/slow paths are enabled based on the functions in the struct (GrGLCaps, for short)

Autogeneration

The first two steps have been automated with a table-based generation script located in this folder. The table is in JSON5 format (like JSON, but with comments). O

Once edited, the Assemble/Validate code can be re-generated by running make generate in this folder.