wlroots.git/render/gles2/shaders, branch master fork of wlroots with action binder support https://git.vlhl.dev/navi/wayland/wlroots.git/atom?h=master 2023-05-28T18:53:34+00:00 renderer/gles2: Compute texture coordinates based off of vertex positions 2023-05-28T18:53:34+00:00 Alexander Orzechowski alex@ozal.ski 2023-05-23T06:16:29+00:00 urn:sha1:b1d26ed47bfd3725100bde10c20b6ee9b1045e65 renderer/gles2: Interpret matrix as column major in shader 2023-05-28T18:53:34+00:00 Alexander Orzechowski alex@ozal.ski 2023-05-22T18:26:53+00:00 urn:sha1:6f67bfe5ab111881f2c066502b845d35c0c24a30 Avoids us needing to transpose. render/gles2: default to highp if available 2023-02-02T21:54:13+00:00 Simon Ser contact@emersion.fr 2023-02-02T21:43:31+00:00 urn:sha1:677a3f2f8847ed2de49dd60868f9d9487a546f58 The spec [1] says that the maximum value for a mediump float is at least 2¹⁴ in section 4.5.2. However, when using a 4k resolution texture coordinates will exceed this value. This causes issues on drivers which implement mediump as a 16-bit [2]. Switch to highp. There's a twist: on GLES2, support for highp is optional. So we need to guard it with cute GL_FRAGMENT_PRECISION_HIGH ifdefs. [1]: https://registry.khronos.org/OpenGL/specs/es/2.0/GLSL_ES_Specification_1.00.pdf [2]: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21082 render/gles2: de-duplicate vertex shaders 2022-10-28T11:49:03+00:00 Simon Ser contact@emersion.fr 2022-10-27T14:05:50+00:00 urn:sha1:4d04144b9254335c74f54c6e282904ec0c54c9dd The vertex shaders for quads and textures are identical. render/gles2: move color uniform from quad.vert to quad.frag 2022-10-28T11:49:03+00:00 Simon Ser contact@emersion.fr 2022-10-27T13:58:34+00:00 urn:sha1:d69018c195d1bb8e6919e73a1709d03a9ae98f38 We have no use for a v_color varying. We can use the uniform directly from the fragment shader without getting the vertex shader involved. render/gles2: move shaders to individual files 2022-10-28T11:46:06+00:00 Simon Ser contact@emersion.fr 2022-10-26T10:03:50+00:00 urn:sha1:a75f9be2e8c63608ab64b9b93a10fdc25600501b Instead of having a C file with strings for each shader, move each shader into its own file. Use a small POSIX shell script to convert the files into C strings (can't wait for C23 #embed...). The benefits from this are: - Improved readability and syntax highlighting. - Line numbers in shader compiler errors are easier to make sense of. - Consistency with the Vulkan renderer. - Shaders will become more complicated as we add color management features.