{
    "description": [
        "Copyright 2022 The ANGLE Project Authors. All rights reserved.",
        "Use of this source code is governed by a BSD-style license that can be",
        "found in the LICENSE file.",
        "",
        "gl_features.json: angle::Features and workarounds for GL driver bugs and other issues."
    ],
    "features": [
        {
            "name": "avoid_1_bit_alpha_texture_formats",
            "category": "Workarounds",
            "description": [
                "Issue with 1-bit alpha framebuffer formats"
            ]
        },
        {
            "name": "RGBA4_is_not_supported_for_color_rendering",
            "category": "Workarounds",
            "description": [
                "GL_RGBA4 is not color renderable"
            ]
        },
        {
            "name": "allow_ETC_formats",
            "category": "Workarounds",
            "description": [
                "Enable ETC2/EAC on desktop OpenGL"
            ]
        },
        {
            "name": "allow_astc_formats",
            "category": "Workarounds",
            "description": [
                "Enable ASTC on desktop OpenGL"
            ]
        },
        {
            "name": "clears_with_gaps_need_flush",
            "category": "Workarounds",
            "description": [
                "Clearing an FBO with multiple attachments may need a flush to avoid race conditions"
            ]
        },
        {
            "name": "does_SRGB_clears_on_linear_framebuffer_attachments",
            "category": "Workarounds",
            "description": [
                "Issue clearing framebuffers with linear attachments when GL_FRAMEBUFFER_SRGB is enabled"
            ]
        },
        {
            "name": "vertex_ID_does_not_include_base_vertex",
            "category": "Workarounds",
            "description": [
                "gl_VertexID in GLSL vertex shader doesn't include base vertex value"
            ]
        },
        {
            "name": "finish_does_not_cause_queries_to_be_available",
            "category": "Workarounds",
            "description": [
                "glFinish doesn't cause all queries to report available result"
            ]
        },
        {
            "name": "always_call_use_program_after_link",
            "category": "Workarounds",
            "description": [
                "Always call useProgram after a successful link to avoid a driver bug"
            ],
            "issue": "http://crbug.com/110263"
        },
        {
            "name": "unpack_overlapping_rows_separately_unpack_buffer",
            "category": "Workarounds",
            "description": [
                "In the case of unpacking from a pixel unpack buffer, unpack overlapping rows row by row"
            ]
        },
        {
            "name": "pack_overlapping_rows_separately_pack_buffer",
            "category": "Workarounds",
            "description": [
                "In the case of packing to a pixel pack buffer, pack overlapping rows row by row"
            ]
        },
        {
            "name": "pack_large_row_length_separately_pack_buffer",
            "category": "Workarounds",
            "description": [
                "When packing to a pixel pack buffer with a row pitch >= 256MiB, pack row by row.",
                "Mali GLES computes stride in bits as int32; row_length*bpp*8 wraps at 0x10000000."
            ],
            "issue": "http://crbug.com/529867799"
        },
        {
            "name": "initialize_current_vertex_attributes",
            "category": "Workarounds",
            "description": [
                "During initialization, assign the current vertex attributes to the spec-mandated defaults"
            ]
        },
        {
            "name": "emulate_abs_int_function",
            "category": "Workarounds",
            "description": [
                "abs(i) where i is an integer returns unexpected result"
            ],
            "issue": "http://crbug.com/642227"
        },
        {
            "name": "add_and_true_to_loop_condition",
            "category": "Workarounds",
            "description": [
                "Calculation of loop conditions in for and while loop has bug"
            ]
        },
        {
            "name": "unpack_last_row_separately_for_padding_inclusion",
            "category": "Workarounds",
            "description": [
                "When uploading textures from an unpack buffer, some drivers count an extra row padding"
            ],
            "issue": "http://anglebug.com/42260492"
        },
        {
            "name": "pack_last_row_separately_for_padding_inclusion",
            "category": "Workarounds",
            "description": [
                "When uploading textures from an pack buffer, some drivers count an extra row padding"
            ],
            "issue": "http://anglebug.com/42260492"
        },
        {
            "name": "use_unused_blocks_with_standard_or_shared_layout",
            "category": "Workarounds",
            "description": [
                "Unused std140 or shared uniform blocks will be treated as inactive"
            ]
        },
        {
            "name": "remove_invariant_and_centroid_for_ESSL3",
            "category": "Workarounds",
            "description": [
                "Fix spec difference between GLSL 4.1 or lower and ESSL3"
            ]
        },
        {
            "name": "emulate_atan_2_float",
            "category": "Workarounds",
            "description": [
                "atan(y, x) may return a wrong answer"
            ],
            "issue": "http://crbug.com/672380"
        },
        {
            "name": "reapply_UBO_bindings_after_using_binary_program",
            "category": "Workarounds",
            "description": [
                "Some drivers forget about UBO bindings when using program binaries"
            ],
            "issue": "http://anglebug.com/42260591"
        },
        {
            "name": "emulate_max_vertex_attrib_stride",
            "category": "Workarounds",
            "description": [
                "Some drivers return 0 when MAX_VERTEX_ATTRIB_STRIED queried"
            ],
            "issue": "http://anglebug.com/42260722"
        },
        {
            "name": "dont_initialize_uninitialized_locals",
            "category": "Workarounds",
            "description": [
                "Initializing uninitialized locals caused odd behavior in a few WebGL 2 tests"
            ],
            "issue": "http://anglebug.com/40096454"
        },
        {
            "name": "clamp_point_size",
            "category": "Workarounds",
            "description": [
                "The point size range reported from the API is inconsistent with the actual behavior"
            ]
        },
        {
            "name": "force_max_combined_shader_output_resources",
            "category": "Features",
            "description": [
                "Force GL_MAX_COMBINED_SHADER_OUTPUT_RESOURCES to be the sum of GL_MAX_COMBINED_IMAGE_UNIFORMS, GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS, and GL_MAX_COLOR_ATTACHMENTS"
            ],
            "issue": ""
        },
        {
            "name": "dont_invalidate_incomplete_FBOs",
            "category": "Workarounds",
            "description": [
                "Skip invalidation calls if the framebuffer is incomplete."
            ],
            "issue": "http://crbug.com/507508103"
        },
        {
            "name": "dont_use_loops_to_initialize_variables",
            "category": "Workarounds",
            "description": [
                "For loops used to initialize variables hit native GLSL compiler bugs"
            ],
            "issue": "http://crbug.com/809422"
        },
        {
            "name": "clamp_frag_depth",
            "category": "Workarounds",
            "description": [
                "gl_FragDepth is not clamped correctly when rendering to a floating point depth buffer"
            ]
        },
        {
            "name": "rewrite_repeated_assign_to_swizzled",
            "category": "Workarounds",
            "description": [
                "Repeated assignment to swizzled values inside a ",
                "GLSL user-defined function have incorrect results"
            ]
        },
        {
            "name": "pre_transform_texture_cube_grad_derivatives",
            "category": "Workarounds",
            "description": [
                "Apply a vendor-specific transformation to explicit cubemap derivatives"
            ]
        },
        {
            "name": "unsized_SRGB_read_pixels_doesnt_transform",
            "category": "Workarounds",
            "description": [
                "Drivers returning raw sRGB values instead of linearized values when calling glReadPixels ",
                "on unsized sRGB texture formats"
            ],
            "issue": "http://crbug.com/550292 http://crbug.com/565179"
        },
        {
            "name": "query_counter_bits_generates_errors",
            "category": "Workarounds",
            "description": [
                "Drivers generate errors when querying the number of bits in timer queries"
            ],
            "issue": "http://anglebug.com/42261713"
        },
        {
            "name": "limit_webgl_max_texture_size_to_4096",
            "category": "Workarounds",
            "description": [
                "Limit webgl max texture size to 4096 to avoid frequent ",
                "out-of-memory errors"
            ],
            "issue": "http://crbug.com/927470"
        },
        {
            "name": "limit_webgl_max_texture_size_to_8192",
            "category": "Workarounds",
            "description": [
                "Limit webgl max texture size to 8192 to avoid frequent ",
                "out-of-memory errors"
            ],
            "issue": "http://anglebug.com/42267045"
        },
        {
            "name": "limit_max_MSAA_samples_to_4",
            "category": "Workarounds",
            "description": [
                "Various rendering bugs have been observed when using higher MSAA counts"
            ],
            "issue": "http://crbug.com/797243"
        },
        {
            "name": "disable_MSAA_sample_count_1",
            "category": "Workarounds",
            "description": [
                "Do not expose multisample sample count 1 to avoid driver bugs"
            ],
            "issue": "http://anglebug.com/467164245"
        },
        {
            "name": "allow_clear_for_robust_resource_init",
            "category": "Workarounds",
            "description": [
                "Using glClear for robust resource initialization is buggy on some drivers and leads to ",
                "texture corruption. Default to data uploads except on MacOS where it is very slow."
            ],
            "issue": "https://crbug.com/848952 http://crbug.com/883276"
        },
        {
            "name": "clamp_array_access",
            "category": "Workarounds",
            "description": [
                "Clamp uniform array access to avoid reading invalid memory."
            ],
            "issue": "http://anglebug.com/40096539"
        },
        {
            "name": "reset_TexImage2D_base_level",
            "category": "Workarounds",
            "description": [
                "Reset texture base level before calling glTexImage2D to ",
                "work around pixel comparison failure."
            ],
            "issue": "https://crbug.com/705865"
        },
        {
            "name": "reset_base_level_for_ASTC_image",
            "category": "Workarounds",
            "description": [
                "Reset texture base level before calling glCompressedTexImage2D or glCompressedTexSubImage2D for ASTC textures to ",
                "work around PowerVR driver bug."
            ],
            "issue": "https://crbug.com/551708184"
        },
        {
            "name": "recreate_immutable_texture_on_base_level_increase",
            "category": "Workarounds",
            "description": [
                "Recreate native storage for immutable textures when TEXTURE_BASE_LEVEL is increased to ",
                "work around PowerVR sparse page map OOB driver bug."
            ],
            "issue": "https://crbug.com/528131119"
        },
        {
            "name": "reset_TexStorage2D_base_level",
            "category": "Workarounds",
            "description": [
                "Reset texture base level before calling glTexStorage2D to ",
                "work around PowerVR driver bug."
            ],
            "issue": "https://crbug.com/551573368"
        },
        {
            "name": "use_temp_for_non_zero_base_level_GenMipmap_using_CopyImageSubData",
            "category": "Workarounds",
            "description": [
                "Allocate a temporary texture when generating mipmaps on an immutable texture with a ",
                "non-zero base level to avoid driver bugs."
            ],
            "issue": "https://crbug.com/534923522"
        },
        {
            "name": "recreate_texture_on_tex_image_3d_depth_increase",
            "category": "Workarounds",
            "description": [
                "Recreate texture and copy existing levels when glTexImage3D is called on a mutable ",
                "TEXTURE_3D texture with an increased depth to work around Qualcomm driver bug."
            ],
            "issue": "http://anglebug.com/530045332"
        },
        {
            "name": "limit_max_3d_array_texture_size_to_1024",
            "category": "Workarounds",
            "description": [
                "Limit max 3d texture size and max array texture layers to 1024 to avoid system hang"
            ],
            "issue": "http://crbug.com/927470"
        },
        {
            "name": "round_up_3d_texture_size_to_POT_for_limit",
            "category": "Workarounds",
            "description": [
                "Round up 3D texture dimensions to nearest power of two before checking image allocation ",
                "size limits to prevent mishandling of large 3D textures on older PowerVR drivers."
            ],
            "issue": "http://crbug.com/551673541"
        },
        {
            "name": "adjust_src_dst_region_for_BlitFramebuffer",
            "category": "Workarounds",
            "description": [
                "Many platforms have issues with blitFramebuffer when the parameters are large."
            ],
            "issue": "http://crbug.com/830046"
        },
        {
            "name": "clip_src_region_for_BlitFramebuffer",
            "category": "Workarounds",
            "description": [
                "Issues with blitFramebuffer when the parameters don't match the framebuffer size."
            ],
            "issue": "http://crbug.com/830046"
        },
        {
            "name": "RGB_DXT1_textures_sample_zero_alpha",
            "category": "Workarounds",
            "description": [
                "Sampling BLACK texels from RGB DXT1 textures returns transparent black on Mac."
            ],
            "issue": "http://anglebug.com/42262386"
        },
        {
            "name": "unfold_short_circuits",
            "category": "Workarounds",
            "description": [
                "Mac incorrectly executes both sides of && and || expressions when they should ",
                "short-circuit."
            ],
            "issue": "http://anglebug.com/42263407"
        },
        {
            "name": "emulate_primitive_restart_fixed_index",
            "category": "Workarounds",
            "description": [
                "When GL_PRIMITIVE_RESTART_FIXED_INDEX is not available, emulate it with ",
                "GL_PRIMITIVE_RESTART and glPrimitiveRestartIndex."
            ],
            "issue": "http://anglebug.com/40096648"
        },
        {
            "name": "set_primitive_restart_fixed_index_for_draw_arrays",
            "category": "Workarounds",
            "description": [
                "Some drivers discard vertex data in DrawArrays calls when the fixed primitive restart ",
                "index is within the number of primitives being drawn."
            ],
            "issue": "http://anglebug.com/40096648"
        },
        {
            "name": "remove_dynamic_indexing_of_swizzled_vector",
            "category": "Workarounds",
            "description": [
                "Dynamic indexing of swizzled l-values doesn't work correctly on various platforms."
            ],
            "issue": "http://crbug.com/709351"
        },
        {
            "name": "pre_add_texel_fetch_offsets",
            "category": "Workarounds",
            "description": [
                "Intel Mac drivers mistakenly consider the parameter position of nagative vaule as invalid ",
                "even if the sum of position and offset is in range, so we need to add workarounds by ",
                "rewriting texelFetchOffset(sampler, position, lod, offset) into texelFetch(sampler, ",
                "position + offset, lod)."
            ],
            "issue": "http://crbug.com/642605"
        },
        {
            "name": "read_pixels_using_implementation_color_read_format_for_norm16",
            "category": "Workarounds",
            "description": [
                "Quite some OpenGL ES drivers don't implement readPixels for RGBA/UNSIGNED_SHORT from ",
                "EXT_texture_norm16 correctly"
            ],
            "issue": "http://anglebug.com/40096661"
        },
        {
            "name": "flush_before_delete_texture_if_copied_to",
            "category": "Workarounds",
            "description": [
                "Some drivers track CopyTex{Sub}Image texture dependencies incorrectly. Flush",
                " before glDeleteTextures in this case"
            ],
            "issue": "http://anglebug.com/40644715"
        },
        {
            "name": "rewrite_row_major_matrices",
            "category": "Workarounds",
            "description": [
                "Rewrite row major matrices in shaders as column major as a driver bug workaround"
            ],
            "issue": "http://anglebug.com/40096480"
        },
        {
            "name": "disable_draw_buffers_indexed",
            "category": "Workarounds",
            "description": [
                "Disable OES_draw_buffers_indexed extension."
            ]
        },
        {
            "name": "disable_semaphore_fd",
            "category": "Workarounds",
            "description": [
                "Disable GL_EXT_semaphore_fd extension"
            ],
            "issue": "https://crbug.com/1046462"
        },
        {
            "name": "disable_timestamp_queries",
            "category": "Workarounds",
            "description": [
                "Disable GL_EXT_disjoint_timer_query extension"
            ],
            "issue": "https://crbug.com/811661"
        },
        {
            "name": "decode_encode_SRGB_for_GenerateMipmap",
            "category": "Workarounds",
            "description": [
                "Decode and encode before generateMipmap for srgb format textures."
            ],
            "issue": "http://anglebug.com/40644730"
        },
        {
            "name": "emulate_CopyTexImage2D",
            "category": "Workarounds",
            "description": [
                "Replace CopyTexImage2D with TexImage2D + CopyTexSubImage2D."
            ]
        },
        {
            "name": "emulate_CopyTexImage2D_from_renderbuffers",
            "category": "Workarounds",
            "description": [
                "CopyTexImage2D spuriously returns errors on iOS when copying from renderbuffers."
            ],
            "issue": "https://anglebug.com/42263273"
        },
        {
            "name": "force_luma_workaround_for_same_texture_CopyTexImage2D",
            "category": "Workarounds",
            "description": [
                "Work around incorrect channel results in same-texture LUMA CopyTexImage2D."
            ],
            "issue": "https://anglebug.com/486067696"
        },
        {
            "name": "disable_GPU_switching_support",
            "category": "Workarounds",
            "description": [
                "Disable GPU switching support (use only the low-power GPU) on older MacBook Pros."
            ],
            "issue": "https://crbug.com/1091824"
        },
        {
            "name": "disable_native_parallel_compile",
            "category": "Workarounds",
            "description": [
                "Do not use native KHR_parallel_shader_compile even when available."
            ],
            "issue": "http://crbug.com/1094869"
        },
        {
            "name": "emulate_pack_skip_rows_and_pack_skip_pixels",
            "category": "Workarounds",
            "description": [
                "GL_PACK_SKIP_ROWS and GL_PACK_SKIP_PIXELS are ignored in Apple's OpenGL driver."
            ],
            "issue": "https://anglebug.com/40096712"
        },
        {
            "name": "clamp_msc_rate",
            "category": "Workarounds",
            "description": [
                "Some drivers return bogus values for GetMscRate, so we clamp it to 30Hz"
            ],
            "issue": "https://crbug.com/1042393"
        },
        {
            "name": "bind_transform_feedback_buffer_before_bind_buffer_range",
            "category": "Workarounds",
            "description": [
                "Bind transform feedback buffers to the generic binding point before calling ",
                "glBindBufferBase or glBindBufferRange."
            ],
            "issue": "https://anglebug.com/42263702"
        },
        {
            "name": "disable_sync_control_support",
            "category": "Workarounds",
            "description": [
                "Speculative fix for issues on Linux/Wayland where exposing GLX_OML_sync_control renders ",
                "Chrome unusable"
            ],
            "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/42264008"
        },
        {
            "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_all_vertex_arrays_to_default",
            "category": "Workarounds",
            "description": [
                "Only use the default VAO because of missing support or driver bugs"
            ],
            "issue": "http://anglebug.com/40096758"
        },
        {
            "name": "sync_default_vertex_arrays_to_default",
            "category": "Workarounds",
            "description": [
                "Sync all frontend vertex array objects to the driver default vertex array"
            ],
            "issue": "http://anglebug.com/355034686"
        },
        {
            "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/40096530"
        },
        {
            "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/42264072"
        },
        {
            "name": "disable_texture_clamp_to_border",
            "category": "Workarounds",
            "description": [
                "Imagination devices generate INVALID_ENUM when setting the texture border color."
            ],
            "issue": "https://anglebug.com/42265877"
        },
        {
            "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/42265995"
        },
        {
            "name": "emulate_clip_distance_state",
            "category": "Workarounds",
            "description": [
                "Some drivers ignore GL_CLIP_DISTANCEi_EXT state."
            ]
        },
        {
            "name": "emulate_clip_origin",
            "category": "Workarounds",
            "description": [
                "Some drivers incorrectly apply GL_CLIP_ORIGIN_EXT state."
            ]
        },
        {
            "name": "bind_complete_framebuffer_for_timer_queries",
            "category": "Workarounds",
            "description": [
                "Some drivers require a complete framebuffer when beginQuery for TimeElapsed or",
                "Timestampis called."
            ],
            "issue": "https://crbug.com/1356053"
        },
        {
            "name": "disable_base_instance_vertex",
            "category": "Workarounds",
            "description": [
                "Some drivers have buggy implementations of glDraw*BaseVertex*."
            ],
            "issue": "http://anglebug.com/42266610"
        },
        {
            "name": "supports_fragment_shader_interlock_NV",
            "category": "Features",
            "description": [
                "Backend GL context supports NV_fragment_shader_interlock extension"
            ],
            "issue": "http://anglebug.com/40096838"
        },
        {
            "name": "supports_fragment_shader_ordering_INTEL",
            "category": "Features",
            "description": [
                "Backend GL context supports GL_INTEL_fragment_shader_ordering extension"
            ],
            "issue": "http://anglebug.com/40096838"
        },
        {
            "name": "supports_fragment_shader_interlock_ARB",
            "category": "Features",
            "description": [
                "Backend GL context supports ARB_fragment_shader_interlock extension"
            ],
            "issue": "http://anglebug.com/40096838"
        },
        {
            "name": "supports_shader_framebuffer_fetch_EXT",
            "category": "Features",
            "description": [
                "Backend GL context supports EXT_shader_framebuffer_fetch extension"
            ],
            "issue": "http://anglebug.com/40096838"
        },
        {
            "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/40096838"
        },
        {
            "name": "disable_clip_control",
            "category": "Features",
            "description": [
                "Some devices genenerate errors when querying the clip control state"
            ],
            "issue": "http://crbug.com/1434317"
        },
        {
            "name": "scalarize_vec_and_mat_constructor_args",
            "category": "Workarounds",
            "description": [
                "Rewrite vec/mat constructors to work around driver bugs"
            ],
            "issue": "http://crbug.com/1420130"
        },
        {
            "name": "ensure_non_empty_buffer_is_bound_for_draw",
            "category": "Features",
            "description": [
                "Apple OpenGL drivers crash when drawing with a zero-sized buffer bound using a non-zero divisor."
            ],
            "issue": "http://crbug.com/1456243"
        },
        {
            "name": "explicit_fragment_locations",
            "category": "Workarounds",
            "description": [
                "Always write explicit location layout qualifiers for fragment outputs."
            ],
            "issue": "https://anglebug.com/42266740"
        },
        {
            "name": "disable_render_snorm",
            "category": "Workarounds",
            "description": [
                "Disable EXT_render_snorm extension."
            ],
            "issue": "https://anglebug.com/42266745"
        },
        {
            "name": "disable_texture_mirror_clamp_to_edge",
            "category": "Workarounds",
            "description": [
                "Disable EXT_texture_mirror_clamp_to_edge extension."
            ],
            "issue": "https://anglebug.com/42266748"
        },
        {
            "name": "resync_depth_range_on_clip_control",
            "category": "Workarounds",
            "description": [
                "Resync depth range to apply clip control updates."
            ],
            "issue": "https://anglebug.com/42266811"
        },
        {
            "name": "corrupt_program_binary_for_testing",
            "category": "Workarounds",
            "description": [
                "Corrupt the program binary retrieved from the driver for testing purposes."
            ],
            "issue": "https://anglebug.com/41488638"
        },
        {
            "name": "emit_max_glsl_400_for_testing",
            "category": "Workarounds",
            "description": [
                "Avoid GLSL versions above 4.0 for testing purposes."
            ],
            "issue": "https://anglebug.com/42267207"
        },
        {
            "name": "use_intermediate_texture_for_generate_mipmap",
            "category": "Workarounds",
            "description": [
                "Some drivers lose context when repeatedly generating mipmaps on textures that were used as framebuffers."
            ],
            "issue": "https://crbug.com/40279678"
        },
        {
            "name": "avoid_bind_frag_data_location",
            "category": "Workarounds",
            "description": [
                "Qualcomm drivers fail to link after binding fragment data locations."
            ],
            "issue": "https://anglebug.com/8646"
        },
        {
            "name": "srgb_blending_broken",
            "category": "Workarounds",
            "description": [
                "SRGB blending does not appear to work correctly on the some Qualcomm devices. ",
                "Writing to an SRGB framebuffer with GL_FRAMEBUFFER_SRGB enabled and ",
                "then reading back returns the same value. Disabling GL_FRAMEBUFFER_SRGB ",
                "will then convert in the wrong direction."
            ],
            "issue": "https://crbug.com/40488750"
        },
        {
            "name": "bgra_tex_image_formats_broken",
            "category": "Workarounds",
            "description": [
                "BGRA formats do not appear to be accepted by some qualcomm despite the extension being exposed."
            ],
            "issue": "https://anglebug.com/40096376"
        },
        {
            "name": "disable_tiled_rendering",
            "category": "Workarounds",
            "description": [
                "Disable QCOM_tiled_rendering on devices with rendering artifacts or which improperly expose the extension."
            ],
            "issue": "http://skbug.com/9491 https://github.com/flutter/flutter/issues/47164 https://github.com/flutter/flutter/issues/47804"
        },
        {
            "name": "disable_blend_equation_advanced",
            "category": "Workarounds",
            "description": [
                "Disable GL_KHR_blend_equation_advanced due to various driver issues."
            ],
            "issue": "https://anglebug.com/42267098"
        },
        {
            "name": "reset_sample_coverage_on_FBO_change",
            "category": "Workarounds",
            "description": [
                "Some Adreno drivers assume incorrect glSampleCoverage if new FBO is bound with different sample count"
            ],
            "issue": "https://crbug.com/408364831"
        },
        {
            "name": "disable_passthrough_shaders",
            "category": "Workarounds",
            "description": [
                "Some ES2 Mali drivers are unable to query enough information from a linked program to use passthrough shaders."
            ],
            "issue": "https://crbug.com/451796659"
        },
        {
            "name": "disable_clear_tex_image_for_robust_init",
            "category": "Workarounds",
            "description": [
                "IMG drivers are unable to handle glClearTexImage with various format combinations."
            ],
            "issue": "https://crbug.com/465918231"
        },
        {
            "name": "multiview_via_viewport_array",
            "category": "Features",
            "description": [
                "Use ARB_shader_viewport_layer_array or NV_viewport_array2 to implement multiview"
            ],
            "issue": "http://anglebug.com/42260809"
        },
        {
            "name": "validate_max_per_stage_uniform_blocks_at_compile_time",
            "category": "Workarounds",
            "description": [
                "Validate GL_MAX_*_UNIFORM_BLOCKS at compile time instead of link time to work around compiler bugs."
            ],
            "issue": "http://crbug.com/475877320"
        },
        {
            "name": "recreate_mipmap_levels_before_generate",
            "category": "Workarounds",
            "description": [
                "Before calling glGenerateMipmap on a mutable texture, recreate levels that the driver is ",
                "supposed to recreate to work around driver bugs."
            ],
            "issue": "http://crbug.com/491732188"
        },
        {
            "name": "limit_max_buffer_size_to_1gb",
            "category": "Workarounds",
            "description": [
                "Some drivers have internal failures when attempting to allocate and initialize buffers larger than 1gb."
            ],
            "issue": "http://crbug.com/475877320"
        },
        {
            "name": "reattach_fbo_depth_stencil_on_reallocation",
            "category": "Workarounds",
            "description": [
                "Reattach FBO depth and stencil attachments when they are reallocated."
            ],
            "issue": "http://crbug.com/520656244"
        },
        {
            "name": "disable_clear_texture",
            "category": "Workarounds",
            "description": [
                "Disable the EXT_clear_texture extension due to driver bugs."
            ],
            "issue": "http://crbug.com/475877320"
        },
        {
            "name": "flush_before_generate_mipmap",
            "category": "Workarounds",
            "description": [
                "Force a flush before calling generateMipmap to work around driver bugs."
            ],
            "issue": "http://crbug.com/549350408 https://crbug.com/549995090"
        },
        {
            "name": "split_level_0_pbo_full_sub_image_2D",
            "category": "Workarounds",
            "description": [
                "Split full-image level 0 PBO uploads via TexSubImage2D into two calls to work around driver bugs."
            ],
            "issue": "http://crbug.com/496807874"
        },
        {
            "name": "limit_output_varyings_to_256_at_compile_time",
            "category": "Workarounds",
            "description": [
                "Limit the number of declared varying components at compile time to work around a PowerVR driver bug."
            ],
            "issue": "http://crbug.com/529991907"
        },
        {
            "name": "avoid_complex_expressions_in_struct_constructor",
            "category": "Workarounds",
            "description": [
                "Remove complex expressions from struct constructors."
            ],
            "issue": "http://crbug.com/529509587"
        },
        {
            "name": "flush_queries_before_deleting_or_unbinding_fbo",
            "category": "Workarounds",
            "description": [
                "Flush pending GPU jobs/queries before unbinding or deleting a user framebuffer ",
                "object on ARM Mali Valhall/Avalon GPUs to avoid driver crash."
            ],
            "issue": "http://crbug.com/534468209"
        },
        {
            "name": "reattach_texture_to_fbo_after_layer_increase",
            "category": "Workarounds",
            "description": [
                "Reattach texture layer to framebuffer after calling TexImage3D to increase layer count on PowerVR Android."
            ],
            "issue": "http://crbug.com/499602793"
        },
        {
            "name": "upload_oversized_mip_levels_via_unpack_buffer",
            "category": "Workarounds",
            "description": [
                "Stage oversized nonzero-level texture definitions through a scratch pixel unpack buffer ",
                "to work around driver bugs."
            ],
            "issue": "http://crbug.com/548127218"
        },
        {
            "name": "validate_state",
            "category": "Features",
            "description": [
                "Validate applied driver state frequently."
            ],
            "issue": "http://anglebug.com/532176406"
        },
        {
            "name": "finish_before_blit_framebuffer_multi_attachment",
            "category": "Workarounds",
            "description": [
                "Issue a glFinish before calling glBlitFramebuffer if the draw framebuffer has ",
                "multiple color attachments or any color attachment's texture has base_level > 0."
            ],
            "issue": "http://crbug.com/546252753"
        },
        {
            "name": "use_tex_sub_image_for_client_data_npot_uploads",
            "category": "Workarounds",
            "description": [
                "For non-power-of-two textures, upload via TexSubImage2D instead of TexImage2D when uploading client-side data."
            ],
            "issue": "http://crbug.com/553172761"
        }
    ]
}