mirror of https://github.com/axmolengine/axmol.git
704 lines
26 KiB
JSON
704 lines
26 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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"gl_features.json: angle::Features and workarounds for GL driver bugs and other issues."
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],
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"features": [
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{
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"name": "avoid_1_bit_alpha_texture_formats",
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"category": "Workarounds",
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"description": [
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"Issue with 1-bit alpha framebuffer formats"
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]
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},
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{
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"name": "RGBA4_is_not_supported_for_color_rendering",
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"category": "Workarounds",
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"description": [
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"GL_RGBA4 is not color renderable"
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]
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},
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{
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"name": "allow_ETC_formats",
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"category": "Workarounds",
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"description": [
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"Enable ETC2/EAC on desktop OpenGL"
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]
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},
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{
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"name": "allow_astc_formats",
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"category": "Workarounds",
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"description": [
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"Enable ASTC on desktop OpenGL"
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]
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},
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{
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"name": "does_SRGB_clears_on_linear_framebuffer_attachments",
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"category": "Workarounds",
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"description": [
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"Issue clearing framebuffers with linear attachments when GL_FRAMEBUFFER_SRGB is enabled"
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]
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},
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{
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"name": "do_while_GLSL_causes_GPU_hang",
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"category": "Workarounds",
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"description": [
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"Some GLSL constructs involving do-while loops cause GPU hangs"
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],
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"issue": "http://crbug.com/644669"
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},
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{
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"name": "vertex_ID_does_not_include_base_vertex",
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"category": "Workarounds",
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"description": [
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"gl_VertexID in GLSL vertex shader doesn't include base vertex value"
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]
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},
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{
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"name": "finish_does_not_cause_queries_to_be_available",
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"category": "Workarounds",
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"description": [
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"glFinish doesn't cause all queries to report available result"
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]
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},
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{
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"name": "always_call_use_program_after_link",
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"category": "Workarounds",
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"description": [
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"Always call useProgram after a successful link to avoid a driver bug"
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],
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"issue": "http://crbug.com/110263"
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},
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{
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"name": "unpack_overlapping_rows_separately_unpack_buffer",
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"category": "Workarounds",
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"description": [
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"In the case of unpacking from a pixel unpack buffer, unpack overlapping rows row by row"
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]
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},
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{
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"name": "pack_overlapping_rows_separately_pack_buffer",
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"category": "Workarounds",
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"description": [
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"In the case of packing to a pixel pack buffer, pack overlapping rows row by row"
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]
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},
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{
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"name": "initialize_current_vertex_attributes",
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"category": "Workarounds",
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"description": [
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"During initialization, assign the current vertex attributes to the spec-mandated defaults"
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]
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},
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{
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"name": "emulate_abs_int_function",
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"category": "Workarounds",
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"description": [
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"abs(i) where i is an integer returns unexpected result"
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],
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"issue": "http://crbug.com/642227"
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},
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{
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"name": "add_and_true_to_loop_condition",
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"category": "Workarounds",
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"description": [
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"Calculation of loop conditions in for and while loop has bug"
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]
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},
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{
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"name": "unpack_last_row_separately_for_padding_inclusion",
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"category": "Workarounds",
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"description": [
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"When uploading textures from an unpack buffer, some drivers count an extra row padding"
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],
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"issue": "http://anglebug.com/1512"
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},
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{
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"name": "pack_last_row_separately_for_padding_inclusion",
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"category": "Workarounds",
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"description": [
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"When uploading textures from an pack buffer, some drivers count an extra row padding"
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],
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"issue": "http://anglebug.com/1512"
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},
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{
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"name": "emulate_isnan_float",
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"category": "Workarounds",
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"description": [
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"Using isnan() on highp float will get wrong answer"
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],
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"issue": "http://crbug.com/650547"
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},
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{
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"name": "use_unused_blocks_with_standard_or_shared_layout",
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"category": "Workarounds",
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"description": [
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"Unused std140 or shared uniform blocks will be treated as inactive"
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]
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},
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{
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"name": "remove_invariant_and_centroid_for_ESSL3",
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"category": "Workarounds",
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"description": [
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"Fix spec difference between GLSL 4.1 or lower and ESSL3"
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]
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},
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{
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"name": "rewrite_float_unary_minus_operator",
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"category": "Workarounds",
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"description": [
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"Using '-<float>' will get wrong answer"
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],
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"issue": "http://crbug.com/308366"
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},
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{
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"name": "emulate_atan_2_float",
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"category": "Workarounds",
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"description": [
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"atan(y, x) may return a wrong answer"
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],
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"issue": "http://crbug.com/672380"
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},
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{
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"name": "reapply_UBO_bindings_after_using_binary_program",
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"category": "Workarounds",
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"description": [
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"Some drivers forget about UBO bindings when using program binaries"
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],
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"issue": "http://anglebug.com/1637"
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},
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{
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"name": "emulate_max_vertex_attrib_stride",
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"category": "Workarounds",
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"description": [
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"Some drivers return 0 when MAX_VERTEX_ATTRIB_STRIED queried"
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],
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"issue": "http://anglebug.com/1936"
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},
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{
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"name": "dont_initialize_uninitialized_locals",
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"category": "Workarounds",
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"description": [
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"Initializing uninitialized locals caused odd behavior in a few WebGL 2 tests"
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],
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"issue": "http://anglebug.com/2046"
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},
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{
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"name": "clamp_point_size",
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"category": "Workarounds",
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"description": [
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"The point size range reported from the API is inconsistent with the actual behavior"
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]
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},
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{
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"name": "dont_use_loops_to_initialize_variables",
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"category": "Workarounds",
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"description": [
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"For loops used to initialize variables hit native GLSL compiler bugs"
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],
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"issue": "http://crbug.com/809422"
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},
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{
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"name": "clamp_frag_depth",
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"category": "Workarounds",
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"description": [
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"gl_FragDepth is not clamped correctly when rendering to a floating point depth buffer"
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]
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},
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{
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"name": "rewrite_repeated_assign_to_swizzled",
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"category": "Workarounds",
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"description": [
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"Repeated assignment to swizzled values inside a ",
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"GLSL user-defined function have incorrect results"
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]
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},
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{
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"name": "disable_blend_func_extended",
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"category": "Workarounds",
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"description": [
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"ARB_blend_func_extended does not pass the tests"
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],
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"issue": "http://anglebug.com/1085"
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},
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{
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"name": "unsized_SRGB_read_pixels_doesnt_transform",
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"category": "Workarounds",
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"description": [
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"Drivers returning raw sRGB values instead of linearized values when calling glReadPixels ",
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"on unsized sRGB texture formats"
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],
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"issue": "http://crbug.com/550292 http://crbug.com/565179"
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},
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{
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"name": "query_counter_bits_generates_errors",
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"category": "Workarounds",
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"description": [
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"Drivers generate errors when querying the number of bits in timer queries"
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],
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"issue": "http://anglebug.com/3027"
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},
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{
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"name": "dont_relink_programs_in_parallel",
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"category": "Workarounds",
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"description": [
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"Relinking a program in parallel is buggy"
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],
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"issue": "http://anglebug.com/3045"
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},
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{
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"name": "disable_worker_contexts",
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"category": "Workarounds",
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"description": [
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"Some tests have been seen to fail using worker contexts"
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],
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"issue": "http://crbug.com/849576"
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},
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{
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"name": "limit_webgl_max_texture_size_to_4096",
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"category": "Workarounds",
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"description": [
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"Limit webgl max texture size to 4096 to avoid frequent ",
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"out-of-memory errors"
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],
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"issue": "http://crbug.com/927470"
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},
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{
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"name": "limit_max_MSAA_samples_to_4",
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"category": "Workarounds",
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"description": [
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"Various rendering bugs have been observed when using higher MSAA counts"
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],
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"issue": "http://crbug.com/797243"
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},
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{
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"name": "allow_clear_for_robust_resource_init",
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"category": "Workarounds",
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"description": [
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"Using glClear for robust resource initialization is buggy on some drivers and leads to ",
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"texture corruption. Default to data uploads except on MacOS where it is very slow."
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],
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"issue": "https://crbug.com/848952 http://crbug.com/883276"
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},
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{
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"name": "clamp_array_access",
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"category": "Workarounds",
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"description": [
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"Clamp uniform array access to avoid reading invalid memory."
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],
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"issue": "http://anglebug.com/2978"
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},
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{
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"name": "reset_TexImage2D_base_level",
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"category": "Workarounds",
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"description": [
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"Reset texture base level before calling glTexImage2D to ",
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"work around pixel comparison failure."
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],
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"issue": "https://crbug.com/705865"
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},
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{
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"name": "clear_to_zero_or_one_broken",
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"category": "Workarounds",
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"description": [
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"Clears when the clear color is all zeros or ones do not work."
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],
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"issue": "https://crbug.com/710443"
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},
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{
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"name": "limit_max_3d_array_texture_size_to_1024",
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"category": "Workarounds",
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"description": [
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"Limit max 3d texture size and max array texture layers to 1024 to avoid system hang"
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],
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"issue": "http://crbug.com/927470"
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},
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{
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"name": "adjust_src_dst_region_for_BlitFramebuffer",
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"category": "Workarounds",
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"description": [
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"Many platforms have issues with blitFramebuffer when the parameters are large."
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],
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"issue": "http://crbug.com/830046"
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},
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{
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"name": "clip_src_region_for_BlitFramebuffer",
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"category": "Workarounds",
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"description": [
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"Issues with blitFramebuffer when the parameters don't match the framebuffer size."
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],
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"issue": "http://crbug.com/830046"
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},
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{
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"name": "RGB_DXT1_textures_sample_zero_alpha",
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"category": "Workarounds",
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"description": [
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"Sampling BLACK texels from RGB DXT1 textures returns transparent black on Mac."
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],
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"issue": "http://anglebug.com/3729"
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},
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{
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"name": "unfold_short_circuits",
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"category": "Workarounds",
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"description": [
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"Mac incorrectly executes both sides of && and || expressions when they should ",
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"short-circuit."
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],
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"issue": "http://anglebug.com/482"
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},
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{
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"name": "emulate_primitive_restart_fixed_index",
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"category": "Workarounds",
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"description": [
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"When GL_PRIMITIVE_RESTART_FIXED_INDEX is not available, emulate it with ",
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"GL_PRIMITIVE_RESTART and glPrimitiveRestartIndex."
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],
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"issue": "http://anglebug.com/3997"
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},
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{
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"name": "set_primitive_restart_fixed_index_for_draw_arrays",
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"category": "Workarounds",
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"description": [
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"Some drivers discard vertex data in DrawArrays calls when the fixed primitive restart ",
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"index is within the number of primitives being drawn."
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],
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"issue": "http://anglebug.com/3997"
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},
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{
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"name": "remove_dynamic_indexing_of_swizzled_vector",
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"category": "Workarounds",
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"description": [
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"Dynamic indexing of swizzled l-values doesn't work correctly on various platforms."
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],
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"issue": "http://crbug.com/709351"
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},
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{
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"name": "pre_add_texel_fetch_offsets",
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"category": "Workarounds",
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"description": [
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"Intel Mac drivers mistakenly consider the parameter position of nagative vaule as invalid ",
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"even if the sum of position and offset is in range, so we need to add workarounds by ",
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"rewriting texelFetchOffset(sampler, position, lod, offset) into texelFetch(sampler, ",
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"position + offset, lod)."
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],
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"issue": "http://crbug.com/642605"
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},
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{
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"name": "regenerate_struct_names",
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"category": "Workarounds",
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"description": [
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"All Mac drivers do not handle struct scopes correctly. This workaround overwrites a struct",
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"name with a unique prefix."
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],
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"issue": "http://crbug.com/403957"
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},
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{
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"name": "read_pixels_using_implementation_color_read_format_for_norm16",
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"category": "Workarounds",
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"description": [
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"Quite some OpenGL ES drivers don't implement readPixels for RGBA/UNSIGNED_SHORT from ",
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"EXT_texture_norm16 correctly"
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],
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"issue": "http://anglebug.com/4214"
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},
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{
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"name": "flush_before_delete_texture_if_copied_to",
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"category": "Workarounds",
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"description": [
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"Some drivers track CopyTex{Sub}Image texture dependencies incorrectly. Flush",
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" before glDeleteTextures in this case"
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],
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"issue": "http://anglebug.com/4267"
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},
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{
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"name": "rewrite_row_major_matrices",
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"category": "Workarounds",
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"description": [
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"Rewrite row major matrices in shaders as column major as a driver bug workaround"
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],
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"issue": "http://anglebug.com/2273"
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},
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{
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"name": "disable_draw_buffers_indexed",
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"category": "Workarounds",
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"description": [
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"Disable OES_draw_buffers_indexed extension."
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]
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},
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{
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"name": "disable_semaphore_fd",
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"category": "Workarounds",
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"description": [
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"Disable GL_EXT_semaphore_fd extension"
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],
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"issue": "https://crbug.com/1046462"
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},
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{
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"name": "disable_timestamp_queries",
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"category": "Workarounds",
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"description": [
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"Disable GL_EXT_disjoint_timer_query extension"
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],
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"issue": "https://crbug.com/811661"
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},
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{
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"name": "decode_encode_SRGB_for_GenerateMipmap",
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"category": "Workarounds",
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"description": [
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"Decode and encode before generateMipmap for srgb format textures."
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],
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"issue": "http://anglebug.com/4646"
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},
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{
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"name": "emulate_CopyTexImage2D",
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"category": "Workarounds",
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"description": [
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"Replace CopyTexImage2D with TexImage2D + CopyTexSubImage2D."
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]
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},
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{
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"name": "emulate_CopyTexImage2D_from_renderbuffers",
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"category": "Workarounds",
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"description": [
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"CopyTexImage2D spuriously returns errors on iOS when copying from renderbuffers."
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],
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"issue": "https://anglebug.com/4674"
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},
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{
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"name": "disable_GPU_switching_support",
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"category": "Workarounds",
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"description": [
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"Disable GPU switching support (use only the low-power GPU) on older MacBook Pros."
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],
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"issue": "https://crbug.com/1091824"
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},
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{
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"name": "disable_native_parallel_compile",
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"category": "Workarounds",
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"description": [
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"Do not use native KHR_parallel_shader_compile even when available."
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],
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"issue": "http://crbug.com/1094869"
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},
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{
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"name": "emulate_pack_skip_rows_and_pack_skip_pixels",
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"category": "Workarounds",
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"description": [
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"GL_PACK_SKIP_ROWS and GL_PACK_SKIP_PIXELS are ignored in Apple's OpenGL driver."
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],
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"issue": "https://anglebug.com/4849"
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},
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{
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"name": "clamp_msc_rate",
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"category": "Workarounds",
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"description": [
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"Some drivers return bogus values for GetMscRate, so we clamp it to 30Hz"
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],
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"issue": "https://crbug.com/1042393"
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},
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{
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"name": "bind_transform_feedback_buffer_before_bind_buffer_range",
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"category": "Workarounds",
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"description": [
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"Bind transform feedback buffers to the generic binding point before calling ",
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"glBindBufferBase or glBindBufferRange."
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],
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"issue": "https://anglebug.com/5140"
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},
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{
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"name": "disable_sync_control_support",
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"category": "Workarounds",
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"description": [
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"Speculative fix for issues on Linux/Wayland where exposing GLX_OML_sync_control renders ",
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"Chrome unusable"
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],
|
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"issue": "https://crbug.com/1137851"
|
|
},
|
|
{
|
|
"name": "keep_buffer_shadow_copy",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Maintain a shadow copy of buffer data when the GL API does not permit reading data back."
|
|
]
|
|
},
|
|
{
|
|
"name": "set_zero_level_before_GenerateMipmap",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"glGenerateMipmap fails if the zero texture level is not set on some Mac drivers."
|
|
]
|
|
},
|
|
{
|
|
"name": "promote_packed_formats_to_8_bit_per_channel",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Packed color formats are buggy on Macs with AMD GPUs"
|
|
],
|
|
"issue": "http://anglebug.com/5469"
|
|
},
|
|
{
|
|
"name": "init_fragment_output_variables",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"No init gl_FragColor causes context lost"
|
|
],
|
|
"issue": "http://crbug.com/1171371"
|
|
},
|
|
{
|
|
"name": "shift_instanced_array_data_with_offset",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"glDrawArraysInstanced is buggy on certain new Mac Intel GPUs"
|
|
],
|
|
"issue": "http://crbug.com/1144207"
|
|
},
|
|
{
|
|
"name": "sync_vertex_arrays_to_default",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Only use the default VAO because of missing support or driver bugs"
|
|
],
|
|
"issue": "http://anglebug.com/5577"
|
|
},
|
|
{
|
|
"name": "sanitize_AMDGPU_renderer_string",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Strip precise kernel and DRM version information from amdgpu renderer strings."
|
|
],
|
|
"issue": "http://crbug.com/1181193"
|
|
},
|
|
{
|
|
"name": "unbind_FBO_before_switching_context",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Imagination GL drivers are buggy with context switching."
|
|
],
|
|
"issue": "http://crbug.com/1181193"
|
|
},
|
|
{
|
|
"name": "flush_on_framebuffer_change",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Switching framebuffers without a flush can lead to ",
|
|
"crashes on Intel 9th Generation GPU Macs."
|
|
],
|
|
"issue": "http://crbug.com/1181068"
|
|
},
|
|
{
|
|
"name": "disable_multisampled_render_to_texture",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Many drivers have bugs when using GL_EXT_multisampled_render_to_texture"
|
|
],
|
|
"issue": "http://anglebug.com/2894"
|
|
},
|
|
{
|
|
"name": "upload_texture_data_in_chunks",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Upload texture data in <120kb chunks to work around Mac driver hangs and crashes."
|
|
],
|
|
"issue": "http://crbug.com/1181068"
|
|
},
|
|
{
|
|
"name": "emulate_immutable_compressed_texture_3D",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Use non-immutable texture allocation to work around a driver bug."
|
|
],
|
|
"issue": "https://crbug.com/1060012"
|
|
},
|
|
{
|
|
"name": "emulate_RGB10",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Emulate RGB10 support using RGB10_A2."
|
|
],
|
|
"issue": "https://crbug.com/1300575"
|
|
},
|
|
{
|
|
"name": "always_unbind_framebuffer_texture_2D",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Force unbind framebufferTexture2D before binding renderbuffer to work around driver bug."
|
|
],
|
|
"issue": "https://anglebug.com/5536"
|
|
},
|
|
{
|
|
"name": "disable_texture_clamp_to_border",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Imagination devices generate INVALID_ENUM when setting the texture border color."
|
|
],
|
|
"issue": "https://anglebug.com/7405"
|
|
},
|
|
{
|
|
"name": "pass_highp_to_pack_unorm_snorm_builtins",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"packUnorm4x8 fails on Pixel 4 if it is not passed a highp vec4."
|
|
],
|
|
"issue": "http://anglebug.com/7527"
|
|
},
|
|
{
|
|
"name": "emulate_clip_distance_state",
|
|
"category": "Workarounds",
|
|
"description": [
|
|
"Some drivers ignore GL_CLIP_DISTANCEi_EXT state."
|
|
]
|
|
},
|
|
{
|
|
"name": "supports_fragment_shader_interlock_NV",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports NV_fragment_shader_interlock extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
},
|
|
{
|
|
"name": "supports_fragment_shader_ordering_INTEL",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports GL_INTEL_fragment_shader_ordering extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
},
|
|
{
|
|
"name": "supports_fragment_shader_interlock_ARB",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports ARB_fragment_shader_interlock extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
},
|
|
{
|
|
"name": "supports_shader_framebuffer_fetch_EXT",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports EXT_shader_framebuffer_fetch extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
},
|
|
{
|
|
"name": "supports_shader_framebuffer_fetch_non_coherent_EXT",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports EXT_shader_framebuffer_fetch_non_coherent extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
},
|
|
{
|
|
"name": "supports_shader_pixel_local_storage_EXT",
|
|
"category": "Features",
|
|
"description": [
|
|
"Backend GL context supports EXT_shader_pixel_local_storage extension"
|
|
],
|
|
"issue": "http://anglebug.com/7279"
|
|
}
|
|
]
|
|
}
|