src/compiler/translator/builtin_variables.json

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Shahbaz Youssefi ded8ecc0 2025-10-15T15:26:23 Translator: Handle GS and TES output gl_Position like VS The spec declares these special shader variables identically as: ``` out gl_PerVertex { highp vec4 gl_Position; }; ``` Between vertex, geometry and tessellation evaluation shaders. Since the output is nameless, vertex shaders have always treated `gl_Position` as if it's a variable on its own. In this change, TES and GS treat that variable the same way. Additionally, this change removes `gl_Position` as a standalone variable from tessellation _control_ shaders, which must always use `gl_out` instead. Bug: angleproject:349994211 Change-Id: Ib33592fb62af31021a99f76f77c27da214425826 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/7042770 Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 97b93617 2025-10-15T15:17:15 Translator: Remove gl_out from TES built-ins Tessellation evaluation shaders don't have such a built-in. Like geometry shaders, they only have an `out gl_PerVertex` that is not an array. Bug: angleproject:349994211 Change-Id: I6b333a223b721ca5ceb2d6c5658d802cb66769ad Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/7042769 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi eec95a6b 2025-10-02T17:02:14 Translator: Remove NV_shader_framebuffer_fetch This extension is never exposed by ANGLE. AFAICT, it was removed in https://chromium-review.googlesource.com/c/angle/angle/+/688099 and never added again. The current implementation is incorrect even if the extension is exposed; we assume gl_LastFragColorARM is the name, while this extension uses gl_LastFragColor. This change removes mentions of this extension instead of trying to fix it. Bug: angleproject:349994211 Change-Id: I2391a225db95d73579fd71cf261360973e5935f7 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/7004390 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 074eec2f 2025-10-02T15:31:19 Translator: remove angle_BaseVertex/Instance from built-ins These aren't built-ins, they are just used for emulation. Instead of listing them in the built-in variables, they are now created as uniforms during emulation. This change also gives gl_BaseVertex/Instance their own qualifiers so they aren't considered uniforms. The emulation pass is also optimized to do fewer passes. Bug: angleproject:349994211 Change-Id: I44fd345fd4a2dc4a001eb294952a984ae710d606 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/7004388 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>
Shahbaz Youssefi ae02c329 2025-09-30T00:04:58 Translator: Give gl_DepthRange its own qualifier gl_DepthRange and gl_NumSamples are considered "uniform" by the GLSL spec, but gl_NumSamples gets its own qualifier in the translator. This left gl_DepthRange as the only built-in that had to be detected by its name instead of qualifier. This change adds a qualifier for gl_DepthRange to remove this special-ness. Bug: angleproject:349994211 Change-Id: I2b7b0acf3dcaef22bb4a98e4d35fd2cdfd5c825a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6998990 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com>
Shahbaz Youssefi 4eb8604f 2025-09-24T00:13:51 Translator: Use EvqNumSamples for gl_NumSamples This qualifier was seemingly intended for this built-in, but EvqUniform was used for it instead; presumably following gl_DepthRange. Bug: angleproject:349994211 Change-Id: I1ec7f76195d790ac2a53c4f2b0f9a136976480d5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6977986 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com>
Panfeng Hou 25f5e2cf 2025-08-13T17:03:19 Vulkan: Add support for built-in gl_PrimitiveShadingRateEXT Add support for built-in gl_PrimitiveShadingRateEXT and relative const value. Bug: angleproject:397255625 Change-Id: I25d51f5805697e137b232175ee790808c45850b7 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6845515 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Panfeng Hou 251ffe62 2025-07-15T17:37:30 Vulkan: Add support for built-in gl_ShadingRateEXT Add support for built-in gl_ShadingRateEXT of GL_EXT_fragment_shading_rate Bug: angleproject:420310117 Change-Id: Ie11b139a0371b5995f1533a85e02c590cd36109c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6733750 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi ae5c3b96 2024-10-08T17:02:21 Boilerplate for GL_ARM_shader_framebuffer_fetch_depth_stencil Bug: angleproject:352364582 Change-Id: I94c670db5546564a6f60bb513a6d7f3f5bd5778c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5916771 Reviewed-by: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Charlie Lao <cclao@google.com>
Shahbaz Youssefi b16d105f 2024-10-03T10:25:32 Remove Desktop GL front-end support For Desktop GL applications, please use Zink! Bug: angleproject:370937467 Change-Id: Ie734634bb62a2e98c80e1b32d8b3d34624da3c04 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5905428 Reviewed-by: Geoff Lang <geofflang@chromium.org>
Amirali Abdolrashidi ebb56cee 2024-05-31T15:10:37 Implement OES_tessellation_shader Based on the specs, there are no functional differences between OES and EXT. * Added validation for glPatchParameteriOES() and the core glPatchParameteri(). * Added the extension support for GLSL. * EXT_shader_io_blocks is implicitly enabled for the EXT geometry and tessellation shader extensions. * OES_shader_io_blocks is implicitly enabled for the OES versions of said extensions. * Added a test to make sure using this extension works instead of EXT. * Turned the repeated test code into a function: * testTessellationTextureBufferAccess * Skipped the tests that fail on various platforms. * It seems that these tests were being skipped before enabling this extension ("Not supported"). Bug: b/344030760 Bug: angleproject:345306326 Bug: angleproject:345304850 Bug: angleproject:345312771 Change-Id: I905da0132bf6525cb453dcaa613e4deb3155c4dd Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5595611 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com>
Sean Risser 0133b6f1 2023-01-20T16:02:27 Add GL_ARM_shader_framebuffer_fetch builtins Bug: b/242419750 Bug: angleproject:7882 Change-Id: I85582ad21e58e448b740789ec88f783c8b95ee01 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4189028 Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Sean Risser <srisser@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Alexey Knyazev 067ace47 2022-12-21T00:00:00 Add ANGLE_clip_cull_distance extension Added an extension spec. Trivially exposed it on GL, Vulkan, and D3D11. Adjusted tests and validation to allow no cull distance support for this extension string. Removed extra built-in variable definitions. Bug: angleproject:7904 Change-Id: Ic60772dfe28132c316eaa29aadc1afd66e3b0fa7 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4114290 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com>
Alexey Knyazev 7fefd230 2022-10-20T00:00:00 GL: Adjust APPLE_clip_distance exposure Partial revert of I458cad29c10b9d9193c5233e24bac53361ba104e APPLE_clip_distance cannot be implemented on top of EXT_clip_cull_distance because the former is defined both for ES 2.0 and ES 3.0 while the latter is defined only for ES 3.0. Although some ES 3.0+ drivers allow gl_ClipDistance built-in in ESSL 1.00 shaders, this behavior is not specified so ANGLE should not allow it. Added independent ESSL 3.00 gl_ClipDistance and gl_MaxClipDistances definitions. Adjusted translator unit tests. Bug: angleproject:4452 Change-Id: Ib582ce0ac7ccb65f0200ef1d17eaab0c83b228cf Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3963745 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>
Shahbaz Youssefi 87ea0c7d 2022-05-17T22:33:57 Vulkan: SPIR-V Gen: Apply Flat to gl_Layer in FS Not directly specified by the spec on gl_Layer itself, but required according to this more generic statement: > Fragment shader inputs that are, or contain, integral types must be > qualified with the interpolation qualifier flat. Bug: angleproject:7332 Change-Id: Ieaa389e9b1318d3f13147cba7949cff6491c4b61 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3652746 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Brandon Schade <b.schade@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 72529c19 2022-01-31T14:37:42 Vulkan: Fix a few framebuffer fetch bugs A few fixes to framebuffer fetch: - The built-in symbol for coherent and non-coherent are now the same for gl_LastFragData, so extension check can choose one or the other. - The temporary variable used in a transformation is renamed to not be gl_LastFragData. - inout usage is now validated correctly for shader type and version. Bug: angleproject:6951 Bug: angleproject:6905 Bug: angleproject:6907 Change-Id: I9af341a3e8e01ed375a8230618184494813d3ece Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3427577 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Brandon Schade 38fada35 2022-01-27T18:16:18 Vulkan: Add support for OES_primitive_bounding_box Add OES version of the primitive bound box extension Bug: angleproject:3576 Test: dEQP-GLES31.functional.primitive_bounding_box.* Change-Id: Ie44d952992a68dfffd5c124dda8dd11069f0c1e1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3425086 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Brandon Schade <b.schade@samsung.com>
Jamie Madill cb96c236 2022-01-26T18:53:55 Revert "Vulkan: Enable framebuffer fetch on SwiftShader." This reverts commit 5107231939b5e04d3d5e4376176db42c3ae60193. Reason for revert: Fails new code paths in Chrome+Skia. Bug: angleproject:6947 Original change's description: > Vulkan: Enable framebuffer fetch on SwiftShader. > > This also fixes a bug with non-coherent fetch in the symbol table. > > Bug: angleproject:6947 > Bug: angleproject:6948 > Change-Id: I190b2e0cddf1bc1b53a79079d3e2f79ccbb40d15 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3412998 > Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> > Reviewed-by: Cody Northrop <cnorthrop@google.com> > Commit-Queue: Jamie Madill <jmadill@chromium.org> Bug: angleproject:6947 Bug: angleproject:6948 Change-Id: I8bd6c55598552b733547e45c854f6d55768d2b65 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3417503 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>
Jamie Madill 51072319 2022-01-25T10:41:25 Vulkan: Enable framebuffer fetch on SwiftShader. This also fixes a bug with non-coherent fetch in the symbol table. Bug: angleproject:6947 Bug: angleproject:6948 Change-Id: I190b2e0cddf1bc1b53a79079d3e2f79ccbb40d15 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3412998 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>
Yuly Novikov f64f9546 2021-12-07T20:17:32 Reland "Decouple gl_BaseVertex/gl_BaseInstance uniforms" This reverts commit 10e5f34d1439f0bcd5b30bea5bfbf6bdaafd4935. Reason for revert: exonerated from flaky crash suspect Original change's description: > Revert "Decouple gl_BaseVertex/gl_BaseInstance uniforms" > > This reverts commit 36bf1ebe5e9500704dd235254bd22a1f2bbd7059. > > Reason for revert: suspect causing flaky crashes > > Bug: angleproject:6763 > > Original change's description: > > Decouple gl_BaseVertex/gl_BaseInstance uniforms > > > > These are builtin uniforms removed in > > https://github.com/KhronosGroup/WebGL/pull/3278 > > > > Decouple them from the original ANGLE_base_vertex_base_instance > > extension. > > > > Make a new ANGLE_base_vertex_base_instance_shader_builtin > > extension for these builtin uniforms. > > > > Bug: angleproject:3402 > > Change-Id: I77b93917976ce435db9c578c0ade37bff18a42b0 > > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3290304 > > Commit-Queue: Shrek Shao <shrekshao@google.com> > > Reviewed-by: Geoff Lang <geofflang@chromium.org> > > Reviewed-by: Kenneth Russell <kbr@chromium.org> > > Bug: angleproject:3402 > Change-Id: I75830baa14cf4e7c53750fd14ff76501145b4823 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3315610 > Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> > Reviewed-by: Yuly Novikov <ynovikov@chromium.org> > Reviewed-by: Kenneth Russell <kbr@chromium.org> > Commit-Queue: Shrek Shao <shrekshao@google.com> Bug: angleproject:6763 Bug: angleproject:3402 Change-Id: Ie436dc5d55364e464897d407a53b793941cd5d0b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3321703 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Shrek Shao 10e5f34d 2021-12-04T00:10:21 Revert "Decouple gl_BaseVertex/gl_BaseInstance uniforms" This reverts commit 36bf1ebe5e9500704dd235254bd22a1f2bbd7059. Reason for revert: suspect causing flaky crashes Bug: angleproject:6763 Original change's description: > Decouple gl_BaseVertex/gl_BaseInstance uniforms > > These are builtin uniforms removed in > https://github.com/KhronosGroup/WebGL/pull/3278 > > Decouple them from the original ANGLE_base_vertex_base_instance > extension. > > Make a new ANGLE_base_vertex_base_instance_shader_builtin > extension for these builtin uniforms. > > Bug: angleproject:3402 > Change-Id: I77b93917976ce435db9c578c0ade37bff18a42b0 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3290304 > Commit-Queue: Shrek Shao <shrekshao@google.com> > Reviewed-by: Geoff Lang <geofflang@chromium.org> > Reviewed-by: Kenneth Russell <kbr@chromium.org> Bug: angleproject:3402 Change-Id: I75830baa14cf4e7c53750fd14ff76501145b4823 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3315610 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Commit-Queue: Shrek Shao <shrekshao@google.com>
Shrek Shao 36bf1ebe 2021-11-17T13:31:17 Decouple gl_BaseVertex/gl_BaseInstance uniforms These are builtin uniforms removed in https://github.com/KhronosGroup/WebGL/pull/3278 Decouple them from the original ANGLE_base_vertex_base_instance extension. Make a new ANGLE_base_vertex_base_instance_shader_builtin extension for these builtin uniforms. Bug: angleproject:3402 Change-Id: I77b93917976ce435db9c578c0ade37bff18a42b0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3290304 Commit-Queue: Shrek Shao <shrekshao@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org>
Shahbaz Youssefi 0bb3fcbb 2021-09-07T14:28:09 Translator: Fix precision of gl_PointSize on ES3+ In ESSL100, gl_PointSize is declared as mediump. In ESSL300+, it's declared as highp. Bug: angleproject:4889 Bug: angleproject:6132 Change-Id: Ie904a12fdaaca04e2507f1796d9d0fe34b154eab Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3145615 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 3408ea3e 2021-08-24T11:41:42 Translator: Fix precision of gl_FragCoord on ES3+ In ESSL100, gl_FragCoord is declared as mediump. In ESSL300+, it's declared as highp. Bug: angleproject:4889 Bug: angleproject:6132 Change-Id: I42583d07fb745421f195be95fa404c617227b02e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3116307 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Brandon Schade 217acac2 2021-07-21T12:42:56 Vulkan: Add support for EXT_primitive_bounding_box 1. Added support for EXT_primitive_bounding_box extension 2. Renamed shader variable gl_BoundingBoxEXT[] to ANGLEBoundingBox[] Bug: angleproject:3576 Test: dEQP-GLES31.functional.primitive_bounding_box.* Change-Id: I15fa9af50c6fd8e86d225670ddd8eb39f6e65d35 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3053618 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 96ccf3f4 2021-07-29T12:38:21 Translator: Consolidate EvqFragDepth and EvqFragDepthEXT They were the same thing. Fixes SPIR-V generation which only handled EvqFragDepth. Bug: angleproject:4889 Change-Id: Id2c35f4c5a26e43ad16a420cc0306756a1add082 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3059922 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 45d4641a 2021-07-21T10:58:29 Vulkan: SPIR-V Gen: Support tessellation shaders Bug: angleproject:4889 Change-Id: I7370e037a82689260e27bfd5e72c5c8c982efa58 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3041624 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
Brandon Schade 69f2fb00 2021-03-08T10:49:31 Vulkan: Expose OES_geometry_shader extension Modify the symbol table generation script to accept a list of supported extensions. This allows for the EXT and OES versions of the geometry shader extension to be exposed. Test: angle_deqp_khr_gles31_tests --deqp-case=*geometry_shader* Bug: angleproject:3571 Change-Id: Ia7127a03dbd3fce78957f0505d3ce0c9bab6cb15 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2765011 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Shahbaz Youssefi 1f8e35b5 2021-04-09T12:29:22 Remove EvqBaseVertex and EvqBaseInstance qualifiers They are only used to mark angle_BaseVertex and angle_BaseInstance uniforms, but they make it complicated for the rest of the code to identify them as uniforms. Bug: angleproject:4889 Change-Id: I0c632bb595dc9a7fcda19db11ecb27539b1c33e6 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2818144 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Mohan Maiya 550f2a3e 2021-02-24T09:49:42 Vulkan: Shader support for EXT_shader_framebuffer_fetch_non_coherent Translator can accept gl_LastFragData and 'inout' variable to gain access to framebuffer attachment data. The Vulkan translator replaces it with the SubpassInput type variable. Note that this works only for the noncoherent version of the extension. Bug: angleproject:5454 Test: *EXTShaderFramebufferFetchNoncoherent*.* Change-Id: I392f84ee3ad3eb9fbd09d0b7ff83731a9a3f33f6 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2598060 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Shahbaz Youssefi 5e0a8f9b 2021-01-27T13:46:08 Translator: Enable geometry and tessellation in ES3.2 Symbols that these extensions introduced were only accepted if the extension directive was present. This is not necessary for es 320 shaders. This change adds a new tag to builtin variable and function declarations in the translator, namely "essl_extension_becomes_core_in" which makes gen_builtin_symbols.py automatically create two entries for the builtin; one with the specified level and extension, one with the core level and without extension. Entries in builtin_function_declarations.txt can potentially be deduplicated as a follow up to take advantage of this tag, though likely an anologous "glsl_extension_becomes_core_in" needs to be introduced. Bug: angleproject:5557 Bug: angleproject:5579 Change-Id: I84c19f48a3ccc89d82d80a4f35f7833205bbc88f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2649449 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Mohan Maiya 8f9e17d5 2020-12-14T14:11:11 Add EXT_clip_cull_distance extension autogen code Addition of shader autogen code for EXT_clip_cull_distance extension. Bug: angleproject:5458 Change-Id: I299528957c0e747fd84987c420588c314f54aae0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2590989 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Mohan Maiya 8a401051 2020-11-19T07:58:05 Vulkan: Support OES_sample_variables extension Enable OES_sample_variables extension on Vulkan backend. Add support for built-in variables, uniform state and constants - gl_SampleId, gl_SamplePosition, gl_SampleMask, gl_SampleMaskIn - gl_NumSamples - gl_MaxSamples Bug: angleproject:3588 Tests: dEQP-GLES31.functional.shaders.sample_variables.* KHR-GLES31.core.sample_variables.* Change-Id: Idf37c7b4ccb0331dbda7acd6389ff4e1022ba959 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2477907 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Mohan Maiya 738092ae 2020-11-18T07:58:53 Add auto generated code for GL_EXT_tessellation_shader To support tessellation, code and auto generated code are added. Entry points function, ShaderTypes, built in variables and constants, builtin function barrier and patch keyword are added. Bug: angleproject:3572 Change-Id: Ia5fe473e884466cb88cea7138e13377a1d7b4fa0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2538393 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Le Hoang Quyen dadd1986 2020-04-21T01:50:00 Implement GL_APPLE_clip_distance - Built-in variable gl_ClipDistance has been added to compiler. - Desktop GL: gl_ClipDistance is supported since GL 3.0. Enable/Disable each gl_ClipDistances[i] works out of the box via glEnable(). - Vulkan/Metal: Use uniform variable to control writing to each gl_ClipDistance. One bit flag controls one element in the gl_ClipDistance array. The writing to the disabled element in vertex shader will be ignored, and turned into zero assignment instead. - Direct3D/Mobile GL: Not implemented yet. - Added ClipDistanceTest to gl_tests and compiler unittests. - GL_APPLE_clip_distance is a subset of GL_EXT_clip_cull_distance, so GL_EXT_clip_cull_distance could be implemented in future if needed. Bug: angleproject:4452 Change-Id: I571ac8b56826989808a680226a04bec4cf59988e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2084324 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tobin Ehlis 240befe5 2019-11-15T14:40:31 Add support for gl_HelperInvocation Added HelperInvocation to builtin_variables.json, regenerate the codegen portions of compiler, and plumb support for HelperInvocation through the rest of the compiler. Skipping some fails on Android and Swiftshader for this initial change and will debug/fix those issues in a follow-on. Bug: angleproject:4110 Change-Id: I781a2782ace84200bc615a2cc26b908a62e2aa26 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1922061 Commit-Queue: Tobin Ehlis <tobine@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
shrekshao cd31f286 2019-06-25T14:22:41 Implement Draw base vertex and base instance functions This patch implements functionality of glDrawArraysInstancedBaseInstanceANGLE, glDrawElementsInstancedBaseVertexBaseInstanceANGLE, glMultiDrawArraysInstancedBaseInstanceANGLE, and glMultiDrawElementsInstancedBaseVertexBaseInstanceANGLE Workaround for OpenGL driver on Mac: gl_VertexID on Mac with AMD GPU doesn't include baseVertex value. So replace gl_VertexID with (gl_VertexID + angle_BaseVertex) if any. Workaround for Vulkan GLSL: gl_InstanceIndex on Vulkan includes baseInstance. So replace gl_InstanceIndex with (gl_InstanceIndex - angle_BaseInstance) when angle_BaseInstance is declared. Bug: chromium:891861, angleproject:3402 Change-Id: Ia1d94b5d4d7da7e635468c05c962c4f7eb1b1919 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1750126 Commit-Queue: Shrek Shao <shrekshao@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
Clemen Deng 56db3789 2019-08-01T17:09:53 Use flat arrays instead of switches for function lookups Current implementation of built in function lookup uses autogenerated switch statements. Instead, use the perfect hash mapping to have the lookup use arrays instead. This will improve runtime performance. Bug: angleproject:3805 Change-Id: I6d0ba62d79abd53a7fe818fe675282800781f256 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1756883 Commit-Queue: Clemen Deng <clemendeng@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>
Clemen Deng 05744c23 2019-08-21T16:21:30 Change gl_DrawID from level = ESSL1+ESSL3 to COMMON Built in variable gl_DrawID is exposed to ESSL1 with a suffix, when the variable is the exact same. No need to do this. Bug: angleproject:3805 Change-Id: I63c71791bb6a0e8aa7b644171a3f5a81099eddc0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1762359 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Clemen Deng <clemendeng@google.com>
Clemen Deng 213ad6bd 2019-08-16T16:31:32 Get rid of gl_ViewID_OVR for ESSL1 Only use UInt gl_ViewID_OVR from ESSL3 OVR multiview should not be exposed in ESSL1 Bug: angleproject:3822 Change-Id: Ia9d6247e3a717b06db26f1d436e2b33336b12a7d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1759143 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Clemen Deng <clemendeng@google.com>
Clemen Deng 1d742ce8 2019-08-13T10:33:36 Deleted unnecessary built-in conditions A few built-in variables are checking against overly complicated extension conditions, deleting these will make the array lookup easier to implement. Also changed functionality to always enable GL_OVR_multiview when GL_OVR_multiview2 is enabled Bug: angleproject:3805 Change-Id: I10fc7db0fa8b496fbba8b2c27a7311ac3c24dbe4 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1752082 Commit-Queue: Clemen Deng <clemendeng@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>
shrekshao cdab03aa 2019-06-18T17:24:54 Add flags to shader translator to emulate gl_BaseVertex and gl_BaseInstance Adds support for translating gl_BaseVertex and gl_BaseInstance for implementation of GL_ANGLE_base_vertex_base_instance. They will only be available in WebGL 2. Since there's no gl_VertexID and gl_InstanceID in WebGL 1. It won't be very useful to add them to WebGL 1. Mostly follow pattern of gl_DrawID of GL_multi_draw BUG=angleproject:3402,chromium:891861 Change-Id: Ifcd990c52d12f6814127b904e61a779b8d382e0c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1666361 Commit-Queue: Shrek Shao <shrekshao@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
Mingyu Hu ebab670c 2019-04-19T14:36:45 Adding new extension GL_OVR_multiview GL_OVR_multiview functions exactly the same as GL_OVR_multiview2. All GL_OVR_multiview2 tests now also repeat the same test using GL_OVR_multiview Bug: angleproject:3341 Change-Id: I7e5294fb6bbf7692535174a15da6a42e1b5fc4e2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1575904 Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>
Mingyu Hu 7d64c486 2019-03-12T14:27:40 GL_ANGLE_multiview has been renamed to GL_OVR_multiview2. changes include: 1) GL_OVR_multiview to GL_OVR_multiview2 extension directive change 2) Removal of all references to side by side. We no longer support multiple views in a single 2DTexture. Only 2DTextureArray's are supported 3) WebGL 2 (ES3) is required for multiview Bug: angleproject:3341 Change-Id: Ie0c1d21d7610f8feebdb2e4d01c6947f57e69328 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552023 Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>
Austin Eng 153e0224 2018-12-07T13:31:31 Add gl_DrawID emulation for ESSL3 with ANGLE_multi_draw Bug: chromium:890539 Change-Id: I3d9a9429608afb454f076013f3ed844e115c56cc Reviewed-on: https://chromium-review.googlesource.com/c/1368784 Reviewed-by: Kai Ninomiya <kainino@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Austin Eng <enga@chromium.org>
Austin Eng 7cf9cd24 2018-10-09T15:27:32 Add flags to shader translator to emulate gl_DrawID Adds support for translating gl_DrawID for implementation of GL_ANGLE_multi_draw. Currently the change only supports and allows emulation of the draw id using a uniform variable named `gl_DrawID`. This uniform is mapped in the translated shader to a hashed name that does not use the gl_ namespace Bug: chromium:890539 Change-Id: I08a246ca911e88e733ccdf22f1ed69dcae948e05 Reviewed-on: https://chromium-review.googlesource.com/c/1271957 Commit-Queue: Austin Eng <enga@chromium.org> Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Jamie Madill 4da0d315 2018-06-20T11:46:38 Vulkan: Handle embedded struct uniforms. Also known as nameless structs. Uniform structs without a struct name would not be parsed correctly. This fixes the bug by adding a tree transformation. The transformation gives an internally scoped name to the embedded struct. Bug: angleproject:2665 Change-Id: I43e4dad7d9ad64a40e382066bb136e4f8f719797 Reviewed-on: https://chromium-review.googlesource.com/1101566 Reviewed-by: Olli Etuaho <oetuaho@nvidia.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>
Olli Etuaho b391ec40 2018-03-12T17:04:59 Generate code for looking up built-ins Instead of storing built-ins in a std::unordered_map, we now generate a series of switch statements using the hash value of the look-up string. This works similarly to earlier implementation of looking up unmangled built-ins. Those built-ins that need to be initialized at run-time are stored as member variables of TSymbolTable. This increases compiler init performance significantly, as well as increasing compiler perf test scores around 1-2%. Binary size is larger than before though. BUG=angleproject:2267 TEST=angle_unittests Change-Id: If1dcd36f0d2b30c2ed315cdcf6e831ae9fe70c94 Reviewed-on: https://chromium-review.googlesource.com/960031 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Olli Etuaho 391bda23 2018-02-23T11:43:14 Generate code for initializing built-in variables gen_builtin_symbols.py now generates code for initializing built-in variable symbols as well. Some of the variable symbols are static, but some of them also get initialized dynamically based on values in ShBuiltInResources. The static symbols have get functions in a header file so they can be referenced from AST traversers as well without doing a lookup. BUG=angleproject:2267 TEST=angle_unittests, angle_end2end_tests Change-Id: Ida7f3aeb06d2bce0f737f1483b1bd5833aeddd2e Reviewed-on: https://chromium-review.googlesource.com/911768 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>