329 lines
11 KiB
JSON
329 lines
11 KiB
JSON
{
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"description": [
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"Copyright 2022 The ANGLE Project Authors. All rights reserved.",
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"Use of this source code is governed by a BSD-style license that can be",
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"found in the LICENSE file.",
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"",
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"mtl_features.json: Optional features for the Metal renderer."
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],
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"features": [
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{
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"name": "has_base_vertex_instanced_draw",
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"category": "Features",
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"description": [
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"The renderer supports base vertex instanced draw"
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]
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},
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{
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"name": "has_explicit_mem_barrier",
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"category": "Features",
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"description": [
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"The renderer supports explicit memory barrier"
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]
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},
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{
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"name": "has_cheap_render_pass",
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"category": "Features",
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"description": [
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"The renderer can cheaply break a render pass."
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]
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},
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{
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"name": "has_non_uniform_dispatch",
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"category": "Features",
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"description": [
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"The renderer supports non uniform compute shader dispatch's group size"
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]
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},
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{
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"name": "has_shader_stencil_output",
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"category": "Features",
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"description": [
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"The renderer supports stencil output from fragment shader"
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]
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},
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{
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"name": "has_texture_swizzle",
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"category": "Features",
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"description": [
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"The renderer supports texture swizzle"
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]
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},
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{
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"name": "has_depth_auto_resolve",
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"category": "Features",
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"description": [
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"The renderer supports MSAA depth auto resolve at the end of render pass"
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]
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},
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{
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"name": "has_stencil_auto_resolve",
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"category": "Features",
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"description": [
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"The renderer supports MSAA stencil auto resolve at the end of render pass"
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]
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},
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{
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"name": "has_events",
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"category": "Features",
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"description": [
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"The renderer supports MTL(Shared)Event"
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]
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},
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{
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"name": "allow_inline_const_vertex_data",
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"category": "Features",
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"description": [
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"The renderer supports using inline constant data for small client vertex data"
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]
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},
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{
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"name": "allow_separate_depth_stencil_buffers",
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"category": "Features",
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"description": [
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"Some Apple platforms such as iOS allows separate depth and stencil buffers, ",
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"whereas others such as macOS don't"
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]
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},
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{
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"name": "allow_runtime_sampler_compare_mode",
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"category": "Features",
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"description": [
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"The renderer supports changing sampler's compare mode outside shaders"
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]
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},
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{
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"name": "allow_sampler_compare_gradient",
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"category": "Features",
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"description": [
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"The renderer supports sample_compare with gradients"
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]
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},
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{
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"name": "allow_sampler_compare_lod",
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"category": "Features",
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"description": [
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"The renderer supports sample_compare with lod"
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]
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},
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{
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"name": "allow_buffer_read_write",
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"category": "Features",
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"description": [
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"The renderer supports buffer read and write in the same shader"
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]
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},
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{
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"name": "allow_multisample_store_and_resolve",
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"category": "Features",
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"description": [
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"The renderer supports MSAA store and resolve in the same pass"
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]
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},
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{
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"name": "allow_gen_multiple_mips_per_pass",
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"category": "Features",
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"description": [
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"The renderer supports generating multiple mipmaps per pass"
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]
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},
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{
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"name": "force_D24S8_as_unsupported",
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"category": "Features",
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"description": [
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"Force Depth24Stencil8 format as unsupported."
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]
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},
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{
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"name": "force_buffer_GPU_storage",
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"category": "Features",
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"description": [
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"On systems that support both buffer' memory allocation on GPU and shared memory (such as ",
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"macOS), force using GPU memory allocation for buffers everytime or not."
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]
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},
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{
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"name": "force_non_CS_base_mipmap_generation",
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"category": "Features",
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"description": [
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"Turn this feature on to disallow Compute Shader based mipmap generation. Compute Shader ",
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"based mipmap generation might cause GPU hang on some older iOS devices."
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]
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},
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{
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"name": "emulate_transform_feedback",
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"category": "Features",
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"description": [
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"Turn this on to allow transform feedback in Metal using a 2-pass VS for GLES3."
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]
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},
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{
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"name": "intel_explicit_bool_cast_workaround",
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"category": "Workarounds",
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"description": [
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"Insert explicit casts for float/double/unsigned/signed int on macOS 10.15 with Intel ",
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"driver"
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]
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},
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{
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"name": "intel_disable_fast_math",
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"category": "Workarounds",
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"description": [
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"Disable fast math in atan and invariance cases when running below macOS 12.0"
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]
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},
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{
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"name": "allow_renderpass_without_attachment",
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"category": "Features",
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"description": [
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"Allow creation of render passes without any attachments"
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]
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},
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{
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"name": "avoid_stencil_texture_swizzle",
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"category": "Features",
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"description": [
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"Do not create swizzled views of stencil textures"
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]
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},
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{
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"name": "emulate_alpha_to_coverage",
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"category": "Workarounds",
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"description": [
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"Some GPUs ignore alpha-to-coverage when [[sample_mask]] is written"
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]
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},
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{
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"name": "multisample_color_format_shader_read_workaround",
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"category": "Workarounds",
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"description": [
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"Add shaderRead usage to some multisampled texture formats"
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],
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"issue": "http://anglebug.com/7049"
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},
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{
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"name": "copy_IOSurface_to_non_IOSurface_for_read_optimization",
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"category": "Workarounds",
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"description": [
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"some GPUs are faster to read an IOSurface texture by first copying the texture to a ",
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"non-IOSurface texture"
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],
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"issue": "http://anglebug.com/7117 http://anglebug.com/7573"
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},
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{
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"name": "copy_texture_to_buffer_for_read_optimization",
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"category": "Workarounds",
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"description": [
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"some GPUs are faster to read a texture by first copying the texture to a buffer"
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],
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"issue": "http://anglebug.com/7117"
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},
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{
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"name": "limit_max_draw_buffers_for_testing",
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"category": "Features",
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"description": [
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"Used to check the backend works when the device's advertized limit is less than the code's limit"
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],
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"issue": "http://anglebug.com/7280"
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},
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{
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"name": "limit_max_color_target_bits_for_testing",
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"category": "Features",
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"description": [
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"Metal iOS has a limit on the number of color target bits per pixel."
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],
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"issue": "http://anglebug.com/7280"
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},
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{
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"name": "preemptively_start_provoking_vertex_command_buffer",
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"category": "Features",
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"description": [
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"AMD Metal Drivers appear to have a bug this works around"
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],
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"issue": "http://anglebug.com/7635"
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},
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{
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"name": "upload_data_to_iosurfaces_with_staging_buffers",
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"category": "Workarounds",
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"description": [
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"When uploading data to IOSurface-backed textures, use a staging buffer."
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],
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"issue": "http://anglebug.com/7573"
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},
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{
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"name": "disable_programmable_blending",
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"category": "Features",
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"description": [
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"Disable programmable blending in order to test read_write pixel local storage textures"
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],
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"issue": "http://anglebug.com/7279"
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},
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{
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"name": "disable_r_w_texture_tier2_support",
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"category": "Features",
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"description": [
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"Disable tier2 read_write textures in order to test tier1 support"
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],
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"issue": "http://anglebug.com/7279"
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},
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{
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"name": "disable_raster_order_groups",
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"category": "Features",
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"description": [
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"Disable raster order groups in order to test pixel local storage memory barriers"
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],
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"issue": "http://anglebug.com/7279"
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},
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{
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"name": "enable_in_memory_mtl_library_cache",
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"category": "Features",
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"description": [
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"Cache MTLLibrary objects in memory."
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],
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"issue": "http://crbug.com/1385510"
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},
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{
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"name": "enable_parallel_mtl_library_compilation",
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"category": "Features",
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"description": [
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"Compile MTLLibrary in multiple threads."
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],
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"issue": "http://crbug.com/1385510"
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},
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{
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"name": "always_prefer_staged_texture_uploads",
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"category": "Features",
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"description": [
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"Always prefer to upload texture data via a staging buffer and avoid MTLTexture::replaceRegion."
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],
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"issue": "http://crbug.com/1380790"
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},
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{
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"name": "disable_staged_initialization_of_packed_texture_formats",
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"category": "Features",
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"description": [
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"Staged GPU upload of some packed texture formats such as RGB9_E5 fail on Intel GPUs."
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],
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"issue": "http://anglebug.com/8092"
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},
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{
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"name": "compile_metal_shaders",
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"category": "Features",
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"description": [
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"Compiles metal shaders using command line tools and saves to BlobCache. ",
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"Requires using --no-sandbox and disabling enableParallelMtlLibraryCompilation."
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],
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"issue": "http://crbug.com/1423136"
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},
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{
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"name": "load_metal_shaders_from_blob_cache",
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"category": "Features",
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"description": [
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"Loads metal shaders from blob cache. Useful if compile_metal_shaders was used to ",
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"generate shaders."
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],
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"issue": "http://crbug.com/1423136"
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}
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]
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}
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