kc3-lang/angle

2023-03-02T10:24:14

Add vulkan format image fallback for R16G16B16 This change adds a vulkan format image mapping fallback from R16G16B16 to R16G16B16A16, R32G32B32_FLOAT and R32G32B32A32_FLOAT for both UNORM and SNORM variants. This is done because in Chrome we want to use R16/RG16 formats which are exposed to Skia over the EXT_texture_norm16. Currently, EXT_texture_norm16 requires RGB16_EXT which if not present is not supported even if R16_EXT and RG16_EXT are supported. This fallback helps us support R16/RG16 as well over RGBA16. It also updates validationES checks for GL_RGBA signed and unsigned normalized checking if type is GL_SHORT or GL_UNSIGNED_SHORT. It adds a method LoadToFloat that allows a type (GLushort or GLshort) to be loaded into float format types. This is then used as part of fallbacks for load_functions_data.json. Bug: None Change-Id: I5c6879cd2ed5dd6e3440877f4891f269d96d88a1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4294694 Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>