kc3-lang/angle

2018-04-27T11:45:03

Vulkan: Add framework for internal shaders. Vulkan intenal shaders are stored in a ShaderLibrary, and this is owned by the RendererVk. This way the shaders are reused between all the different Contexts. They are initialized lazily to keep init time low. They also have an associated Serial (called a ProgramSerial) so they can be identified in a PipelineDesc (used by the Pipeline cache). We use a python script to build and invoke the glslang validator, that also produces SPIR-V binary code snippets. These snippets are gathered into an auto-generated file that is exposed via an auto-generated header file. The InternalShaderID enum class gives access to the internal shaders that are shared through the Vulkan back-end. This also adds simple clear shaders to be used in masked color clears. The patch doesn't add any functionality but it is split off from the color clear functionality to keep the code size down. Bug: angleproject:2339 Bug: angleproject:2455 Change-Id: Ie83043eda217c9f013817b198c92a3b7ba0878b4 Reviewed-on: https://chromium-review.googlesource.com/1031372 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>