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gtk/gdk/gdkdmabufprivate.h

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dmabuf: Split out GdkDmabuf and GdkDmabufDownloader GdkDmabuf is a struct encapsulating all the values of a dmabuf, so nothing to see here. GdkDmabufDownloader is a vtable for a thing that can download dmabufs. For now only one implementation exists, so this just looks like a ton of work for no benefit. The only neat thing is that gdkdmabuftexture.c got a whole lot tidier.
2023-10-15 03:21:23 +00:00
#pragma once
#include "gdkdmabufformatsbuilderprivate.h"
dmabuf: Add Vulkan formats to the large table This is done without testing, just doing my best to map all the DRM formats to VkFormats. Once people start using them, they'll figure it out when it's wrong. (Somebody needs to write a testsuite.)
2023-12-16 17:59:13 +00:00
#ifdef GDK_RENDERING_VULKAN
#include <vulkan/vulkan.h>
#endif
dmabuf: Split out GdkDmabuf and GdkDmabufDownloader GdkDmabuf is a struct encapsulating all the values of a dmabuf, so nothing to see here. GdkDmabufDownloader is a vtable for a thing that can download dmabufs. For now only one implementation exists, so this just looks like a ton of work for no benefit. The only neat thing is that gdkdmabuftexture.c got a whole lot tidier.
2023-10-15 03:21:23 +00:00
#define GDK_DMABUF_MAX_PLANES 4
typedef struct _GdkDmabuf GdkDmabuf;
struct _GdkDmabuf
{
guint32 fourcc;
guint64 modifier;
unsigned int n_planes;
struct {
int fd;
unsigned int stride;
unsigned int offset;
} planes[GDK_DMABUF_MAX_PLANES];
};
build: Check for drm/drm_fourcc.h too It's part of the kernel headers package so I did not check for libdrm. As a side effect I checked the #define to HAVE_DMABUF.
2023-10-22 15:23:37 +00:00
#ifdef HAVE_DMABUF
dmabuf: Add gdk_dmabuf_sanitize() Tries to sanitize the dmabuf to conform to the values expected by Vulkan/EGL which should also be the values expected by Wayland compositors We put these sanitized values into the GdkDmabufTexture, by sanitizing the input from GdkDmabufTextureBuilder, which are controlled by the callers. Things we do here: 1. Disallow any dmabuf format that we do not know. 1. Treat the INVALID modifier the same as LINEAR. 2. Ignore all other modifiers. 3. Try and fix various inconsistencies between V4L and Mesa, like NV12. *** WARNING *** This function is not absolutely perfect, you do not have a perfect dmabuf afterwards. In particular, it doesn't check sizes.
2023-10-20 10:08:18 +00:00
dmabuf: Don't use a downloader for builtin downloads When we use the builtin downloads via mmap(), it's a special case where we don't need to initialize subsystems and query them for support. We know what we can and can't do. Also, we want to use these formats with the lowest priority but pick the downloader first for supported formats, and queueing it in the downloaders list doesn't reflect that. So don't do it.
2023-12-13 06:27:43 +00:00
GdkDmabufFormats * gdk_dmabuf_get_mmap_formats (void) G_GNUC_CONST;
void gdk_dmabuf_download_mmap (GdkTexture *texture,
GdkMemoryFormat format,
guchar *data,
gsize stride);
dmabuf: Add gdk_dmabuf_ioctl() The function is a copy of libdrm's drmIoctl() and handles EINTR and EAGAIN error.s Use it for the sync ioctls in the dmabuf mmaping calls.
2023-11-26 04:28:34 +00:00
int gdk_dmabuf_ioctl (int fd,
unsigned long request,
void *arg);
dmabuf: Add gdk_dmabuf_import/export_sync_fd() Vulkan needs this. This code is following the code that compositors with Wayland support - like wlroots - are doing. The code was introduced to Linux in https://lore.kernel.org/dri-devel/20220506180216.2095060-1-jason@jlekstrand.net/
2023-11-26 04:58:57 +00:00
gboolean gdk_dmabuf_import_sync_file (int dmabuf_fd,
guint32 flags,
int sync_file_fd);
int gdk_dmabuf_export_sync_file (int dmabuf_fd,
guint32 flags);
dmabuf: Add gdk_dmabuf_ioctl() The function is a copy of libdrm's drmIoctl() and handles EINTR and EAGAIN error.s Use it for the sync ioctls in the dmabuf mmaping calls.
2023-11-26 04:28:34 +00:00
dmabuf: Add an EGL downloader Add an implementation of GdkDmabufDownloader that uses gsk_renderer_render_texture + GL texture download. Since gsk isn't threadsafe, we do the download in the main thread, taking care to not disturb the current GL context of whatever is going on there at the time. And since gsk renderers are expensive to create, we cache it in the display. Note that gsk does not yet have any special support for dmabuf textures, so for now, they will always get downloaded and then reuploaded as GL textures.
2023-10-21 20:31:10 +00:00
gboolean gdk_dmabuf_sanitize (GdkDmabuf *dest,
dmabuf: Add gdk_dmabuf_sanitize() Tries to sanitize the dmabuf to conform to the values expected by Vulkan/EGL which should also be the values expected by Wayland compositors We put these sanitized values into the GdkDmabufTexture, by sanitizing the input from GdkDmabufTextureBuilder, which are controlled by the callers. Things we do here: 1. Disallow any dmabuf format that we do not know. 1. Treat the INVALID modifier the same as LINEAR. 2. Ignore all other modifiers. 3. Try and fix various inconsistencies between V4L and Mesa, like NV12. *** WARNING *** This function is not absolutely perfect, you do not have a perfect dmabuf afterwards. In particular, it doesn't check sizes.
2023-10-20 10:08:18 +00:00
gsize width,
gsize height,
const GdkDmabuf *src,
GError **error);
dmabuf: Add an EGL downloader Add an implementation of GdkDmabufDownloader that uses gsk_renderer_render_texture + GL texture download. Since gsk isn't threadsafe, we do the download in the main thread, taking care to not disturb the current GL context of whatever is going on there at the time. And since gsk renderers are expensive to create, we cache it in the display. Note that gsk does not yet have any special support for dmabuf textures, so for now, they will always get downloaded and then reuploaded as GL textures.
2023-10-21 20:31:10 +00:00
gboolean gdk_dmabuf_is_disjoint (const GdkDmabuf *dmabuf);
dmabuf: Add gdk_dmabuf_is_disjoint() No users yet, but Vulkan will use this later. So have it available already.
2023-10-21 19:23:11 +00:00
dmabuf: Add gdk_dmabuf_fourcc_is_yuv() In the future, we want to be using GdkColorState instead, but for now, let's use this. Also remove a duplicate entry in the list of formats.
2023-12-12 05:48:06 +00:00
gboolean gdk_dmabuf_fourcc_is_yuv (guint32 fourcc,
gboolean *is_yuv);
dmabuf: Refactor function 1. Don't require passing in a GdkDisplay 2. return TRUE/FALSE if a format was found, so calling code can decide how to handle failure itself
2023-11-23 01:00:30 +00:00
gboolean gdk_dmabuf_get_memory_format (guint32 fourcc,
gboolean premultiplied,
GdkMemoryFormat *out_format);
dmabuf: Add Vulkan formats to the large table This is done without testing, just doing my best to map all the DRM formats to VkFormats. Once people start using them, they'll figure it out when it's wrong. (Somebody needs to write a testsuite.)
2023-12-16 17:59:13 +00:00
#ifdef GDK_RENDERING_VULKAN
vulkan: Add support for enumerating dmabuf formats This code does not add a downloader, so we do not claim support for all the new formats. It just queries the formats. But this can be used to import dmabufs directly into the Vulkaan renderer.
2023-10-19 11:34:40 +00:00
gboolean gdk_dmabuf_vk_get_nth (gsize n,
guint32 *fourcc,
VkFormat *vk_format);
dmabuf: Add Vulkan formats to the large table This is done without testing, just doing my best to map all the DRM formats to VkFormats. Once people start using them, they'll figure it out when it's wrong. (Somebody needs to write a testsuite.)
2023-12-16 17:59:13 +00:00
VkFormat gdk_dmabuf_get_vk_format (guint32 fourcc,
VkComponentMapping *out_components);
#endif
dmabuf: NV12 is opaque Getting this wrong matters, since we won't offload textures in non-opaque formats. Found by Robert Mader. At the same time, unify the two places we have for mapping from fourcc to memory format.
2023-11-11 22:56:01 +00:00
dmabuf: Split out GdkDmabuf and GdkDmabufDownloader GdkDmabuf is a struct encapsulating all the values of a dmabuf, so nothing to see here. GdkDmabufDownloader is a vtable for a thing that can download dmabufs. For now only one implementation exists, so this just looks like a ton of work for no benefit. The only neat thing is that gdkdmabuftexture.c got a whole lot tidier.
2023-10-15 03:21:23 +00:00
#endif
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