Move curve softening math for feathers to the GPU

We still segment the feathered curves on the CPU, which is super slow, but this is step 1 toward having all this work on the GPU. This PR also fixes cracks in the feather join tessellation!!! CPU benchmark results: DrawCustomFeathers: 906.9 => 226.1 ms (4x) DrawFeatheredPaths_paper: 246.5 => 81.2 ms (3x) Diffs= 82449bcb3f Move curve softening math for feathers to the GPU (#9064)
rive-app · Feb 27, 2025 · 5601f68 · 5601f68
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diff --git a/.rive_head b/.rive_head
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diff --git a/wasm/submodules/rive-runtime b/wasm/submodules/rive-runtime
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+1 −1		.rive_head
+0 −22		include/rive/math/bezier_utils.hpp
+3 −24		renderer/include/rive/renderer/gpu.hpp
+2 −0		renderer/include/rive/renderer/vulkan/render_context_vulkan_impl.hpp
+13 −9		renderer/src/d3d/render_context_d3d_impl.cpp
+7 −2		renderer/src/gl/render_context_gl_impl.cpp
+66 −95		renderer/src/gpu.cpp
+3 −1		renderer/src/metal/render_context_metal_impl.mm
+1 −3		renderer/src/render_context.cpp
+122 −116		renderer/src/rive_render_path.cpp
+245 −0		renderer/src/shaders/bezier_utils.glsl
+27 −6		renderer/src/shaders/common.glsl
+3 −0		renderer/src/shaders/constants.glsl
+7 −28		renderer/src/shaders/draw_path_common.glsl
+10 −15		renderer/src/shaders/hlsl.glsl
+2 −0		renderer/src/shaders/metal.glsl
+1 −0		renderer/src/shaders/metal/tessellate.metal
+1 −0		renderer/src/shaders/spirv/tessellate.main
+79 −32		renderer/src/shaders/tessellate.glsl
+34 −4		renderer/src/vulkan/render_context_vulkan_impl.cpp
+2 −0		renderer/src/webgpu/render_context_webgpu_impl.cpp
+0 −112		src/math/bezier_utils.cpp
+94 −31		tests/bench/draw_pls_path.cpp
+13 −5		tests/deploy_tests.py
+50 −0		tests/unit_tests/renderer/cpp.glsl
+73 −75		tests/unit_tests/renderer/gpu_namespace_test.cpp
+121 −24		tests/unit_tests/runtime/bezier_utils_test.cpp