kc3-lang/angle

2025-04-28T16:45:56

WGPU: upload texture bind groups and configured samplers GLSL samplers are split into separate sampler/texture variables in WGSL. Before this CL, the WGSL translator generated shaders that look like: @group(1) @binding(@@@@@@) var ANGLE_sampler_samp2D : sampler; @group(1) @binding(@@@@@@) var ANGLE_texture_samp2D : texture_2d<f32>; @group(1) @binding(@@@@@@) var ANGLE_sampler_sampCube : sampler; @group(1) @binding(@@@@@@) var ANGLE_texture_sampCube : texture_cube<f32>; This CL replaces those with actual binding numbers @group(1) @binding(0) var ANGLE_sampler_samp2D : sampler; @group(1) @binding(1) var ANGLE_texture_samp2D : texture_2d<f32>; ... Such that @binding(n*2) is the WGSL sampler variable corresponding to the n-th GLSL sampler and @binding(n*2+1) is the WGSL texture variable corresponding to the n-th GLSL sampler. This CL then generates binding group layouts matching the above, and uploads textures and configured samplers in bind groups. This makes some of the deqp_gles2 tests 2d texture tests pass, though some fail because they need a flipped y coordinate. Not yet supported: 1. arrays of samplers 2. shadow samplers 3. cube textures Bug: angleproject:389145696 Change-Id: I2ab18ae5ebb4d1289101266bd9451576aa04ce2a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6382272 Reviewed-by: Liza Burakova <liza@chromium.org> Auto-Submit: Matthew Denton <mpdenton@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>