forked from 12to11/12to11
f2e3baad45
* 12to11.c (HandleCmdline): Handle `-xrm'. (XLMain): Initialize single pixel buffers. * 12to11.man: Improve documentation. * Imakefile (SRCS): Add single_pixel_buffer.c. (OBJS): Add single_pixel_buffer.o. (single-pixel-buffer-v1): Add new scanner target. * README: Document new supported protocol. * compositor.h (struct _BufferFuncs): Add single pixel buffer functions. * egl.c (enum _EglBufferType): New buffer type. (struct _EglSinglePixelBuffer): New struct. (struct _EglBuffr): Add EglSinglePixelBuffer. (struct _CompositeProgram): Add source_color uniform. (EglCompileCompositeProgram): Look for both uniforms. (EglCompileShaders): Compile single pixel shader. (FindProgram, GetTextureTarget, Composite, UpdateTexture) (EnsureTexture, UpdateBuffer): Handle single pixel buffers. (BufferFromSinglePixel, FreeSinglePixelBuffer): New functions. (egl_buffer_funcs): Add new buffer functions. * picture_renderer.c (BufferFromSinglePixel, FreeSinglePixelBuffer): New functions. (picture_buffer_funcs): Add new buffer functions. * renderer.c (RenderBufferFromSinglePixel) (RenderUpdateBufferForDamage): New functions. (ReadRendererResource, PickRenderer): Read resource if no environment variable was specified. * shaders.txt (Composite Rectangle Fragment Shader Single Pixel): New shader. * text_input.c (struct _TextInput, UpdatePreedit) (PreeditStartCallback, PreeditCaretCallback): Correctly handle caret types and style. (XLInitTextInput): Fix failure message.
108 lines
4.2 KiB
Text
108 lines
4.2 KiB
Text
This is a tool for running Wayland applications on an X server,
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preferably with a compositing manager running.
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It is not yet complete. What is not yet implemented includes support
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for touchscreens, input methods, device switching in dmabuf feedback,
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and the single-pixel buffer protocol extension.
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There are also problems with output reporting in subsurfaces.
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It is not portable to systems other than recent versions of GNU/Linux
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running the X.Org server 1.20 or later, and has not been tested on
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window (and compositing) managers other than GNOME Shell.
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It will not work very well unless the compositing manager supports the
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EWMH frame synchronization protocol.
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Building and running this tool requires the following X protocol
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extensions:
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Nonrectangular Window Shape Extension, version 1.1 or later
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MIT Shared Memory Extension, version 1.2 or later
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X Resize, Rotate and Reflect Extension, version 1.3 or later
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(this will soon be 1.4, once support for multiple GPU
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systems is fully implemented)
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X Synchronization Extension, version 1.0 or later
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X Rendering Extension, version 1.2 or later
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X Input Extension, version 2.3 or later
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Direct Rendering Interface 3, version 1.2 or later
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X Fixes Extension, version 1 or later
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In addition, it requires Xlib to be built with the XCB transport, and
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the XCB bindings for MIT-SHM and DRI3 to be available.
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Sometimes, it might be desirable to build with EGL, and use OpenGL ES
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2.0 for i.e. YUV video format support. To do so, uncomment the block
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of code for EGL support in libraries.def before running `xmkmf'. This
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will additionally require the EGL and GLESv2 development files, and
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for the following EGL and GLES extensions to be present at runtime:
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EGL_EXT_platform_base
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EGL_EXT_device_query
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EGL_KHR_image_base
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EGL_EXT_image_dma_buf_import_modifiers
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EGL_EXT_image_dma_buf_import
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EGL_EXT_buffer_age
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GL_OES_EGL_image
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GL_OES_EGL_image_external
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GL_EXT_read_format_bgra
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GL_EXT_unpack_subimage
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After building with EGL support, the renderer must be enabled by
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setting the environment variable "RENDERER" to "egl", or by setting
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the "renderer" resource (class "Renderer") to "egl".
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The following Wayland protocols are implemented to a more-or-less
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complete degree:
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'wl_output', version: 2
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'wl_compositor', version: 5
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'wl_shm', version: 1
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'xdg_wm_base', version: 5
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'wl_subcompositor', version: 1
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'wl_seat', version: 7
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'wl_data_device_manager', version: 3
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'zwp_linux_dmabuf_v1', version: 4
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'zwp_primary_selection_device_manager_v1', version: 1
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'wp_viewporter', version: 1
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'zxdg_decoration_manager_v1', version: 1
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'zwp_text_input_manager_v3', version: 1
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'wp_single_pixel_buffer_manager_v1', version: 1
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When built with EGL, the following Wayland protocol is also supported:
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'zwp_linux_explicit_synchronization_v1', version: 2
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With the main caveat being that zwp_linux_dmabuf_v1 has no real
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support for multiple-provider setups (help wanted).
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Window decorations are also not supported, even though they fit in
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nicely with X window management.
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It would also be nice to have pinch gesture support.
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This directory is organized as follows:
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Imakefile - the top level Makefile template
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libraries.def - files for libraries that don't provide Imakefiles
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*.xml - Wayland protocol definition source
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*.c, *.h - C source code
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*.awk - scripts used to generate headers
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*.txt - text data used to generate some headers, i.e.
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those containing MIME types or shaders
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Building the source code is simple, provided that you have the
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necessary libwayland-server library, pixman, XCB, and X extension
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libraries installed:
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xmkmf # to generate the Makefile
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make # to build the binary
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wayland-scanner is also required when building from the repository.
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Running the binary should be simple as well:
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./12to11
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Wayland programs will then run as regular X windows.
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