extensions/ANGLE_shader_pixel_local_storage.txt


Log

Author Commit Date CI Message
Chris Dalton 7822c9df 2022-09-10T14:17:21 Delete FramebufferPixelLocalClearValue{f,i,ui}vANGLE Instead, BeginPixelLocalStorageANGLE just accepts a buffer containing clear values. In WebGL, the clear data can be an array of Numbers. This makes the API smaller, simpler, and less stateful and bug-prone. Bug: angleproject:7279 Change-Id: I8b3fa4ae7f20ba3ad72beb01f275acf50eee803c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3888960 Commit-Queue: Chris Dalton <chris@rive.app> Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Chris Dalton 6fde3568 2022-08-09T16:42:17 Spec out the PLS client API Drafts the additions to the OpenGL ES 3.0 spec for pixel local storage. Bug: angleproject:7279 Change-Id: Ibc0d227142ac51f5d3820f27c9114779d846ffc2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3824171 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>
Chris Dalton 4a636cdd 2022-07-20T22:44:30 Require all PLS formats to consume exactly 4 bytes of storage D3D 11.0 UAVs only support R32_FLOAT, R32_UINT, R32_SINT formats. EXT_shader_pixel_local_storage explicitly states that all PLS variables consume exactly 4 bytes. ESSL images can only have both read and write access if their format is r32f, r32i, r32ui. (We were able to circumvent this via aliasing, but it was a huge source of bugs.) There is a large precedent for only supporting 4 bytes of storage in the capabilities we use for PLS, so this CL removes support for all PLS storage formats that are not 4 bytes. It also implements an "R32" mode for PLS, that does manual packing and unpacking of r32* image formats. If the application wants larger formats, it can always define multiple PLS planes and piece them together. Next up we ought to be able to support rg16* types with more packing/unpacking. With aliasing gone, and with a bit of tweaking, the PLS tests now pass on the Pixel 4 GLES bot. Bug: angleproject:7279 Bug: angleproject:7388 Bug: angleproject:7524 Bug: angleproject:7527 Change-Id: I6b8f62c2428ade6cb5413e33360d734e55dda0eb Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3782579 Reviewed-by: Stephen White <senorblanco@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Chris Dalton <chris@rive.app>
Chris Dalton aa7e6751 2022-07-15T23:33:30 Automatically enable early_fragment_tests when PLS is declared When PLS is polyfilled by shader images, we need early_fragment_tests in order to match the same depth/stencil behavior as when it is implemented as framebuffer fetch. Bug: angleproject:7279 Change-Id: I37f5a8682cc96a14ef247d53ed243e4aceb15f39 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3767535 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Chris Dalton <chris@rive.app>
Chris Dalton c460c299 2022-06-21T11:20:45 Implement GLSL additions for ANGLE_shader_pixel_local_storage Specs out, implements, and thoroughly tests the GLSL additions for ANGLE_shader_pixel_local_storage. Adds a simple transformation that rewrites PLS directly into shader images. Updates the existing PLS tests to use the newly built-in PLS features and ensures they continue passing. For now, applications call glBindImageTexture to configure their pixel local storage. The OpenGL ES API side of this extension will follow shortly. Bug: angleproject:7279 Change-Id: I141183069b5cbfcca01cbb77b5b36d3e5f834bf5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3761876 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Chris Dalton <chris@rive.app> Reviewed-by: Kenneth Russell <kbr@chromium.org>
Chris Dalton 15cc0013 2022-07-14T23:32:05 Add a GL_ANGLE_shader_pixel_local_storage extension Plumbs through "GL_ANGLE_shader_pixel_local_storage" and "GL_ANGLE_shader_pixel_local_storage_coherent" extension strings advertised by ANGLE and stubs out an initial spec document. This change doesn't add any new procedures or shader constructs, but it does allow the PLS tests to start checking for the real extension strings and requiring the GL_ANGLE_shader_pixel_local_storage extension. Bug: angleproject:7279 Change-Id: I36877fe4117185a2121f803288123cd69a447cf3 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3739590 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Commit-Queue: Chris Dalton <chris@rive.app>