mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-08 17:50:10 +00:00
348 lines
12 KiB
C
348 lines
12 KiB
C
/* gdkdmabufegl.c
|
|
*
|
|
* Copyright 2023 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#if defined(HAVE_DMABUF) && defined (HAVE_EGL)
|
|
#include "gdkdmabufeglprivate.h"
|
|
|
|
#include "gdkdmabufformatsbuilderprivate.h"
|
|
#include "gdkdebugprivate.h"
|
|
#include "gdkdmabuffourccprivate.h"
|
|
#include "gdkdmabuftextureprivate.h"
|
|
#include "gdkmemoryformatprivate.h"
|
|
#include "gdkdisplayprivate.h"
|
|
#include "gdkglcontextprivate.h"
|
|
#include "gdktexturedownloader.h"
|
|
|
|
#include <graphene.h>
|
|
|
|
/* A dmabuf downloader implementation that downloads buffers via
|
|
* gsk_renderer_render_texture + GL texture download.
|
|
*/
|
|
|
|
static gboolean
|
|
gdk_dmabuf_egl_downloader_collect_formats (GdkDisplay *display,
|
|
GdkDmabufFormatsBuilder *formats,
|
|
GdkDmabufFormatsBuilder *external)
|
|
{
|
|
GdkGLContext *context = gdk_display_get_gl_context (display);
|
|
EGLDisplay egl_display = gdk_display_get_egl_display (display);
|
|
int num_fourccs;
|
|
int *fourccs;
|
|
guint64 *modifiers;
|
|
unsigned int *external_only;
|
|
int n_mods;
|
|
|
|
if (egl_display == EGL_NO_DISPLAY ||
|
|
!display->have_egl_dma_buf_import)
|
|
return FALSE;
|
|
|
|
gdk_gl_context_make_current (context);
|
|
|
|
eglQueryDmaBufFormatsEXT (egl_display, 0, NULL, &num_fourccs);
|
|
fourccs = g_new (int, num_fourccs);
|
|
eglQueryDmaBufFormatsEXT (egl_display, num_fourccs, fourccs, &num_fourccs);
|
|
|
|
n_mods = 80;
|
|
modifiers = g_new (guint64, n_mods);
|
|
external_only = g_new (unsigned int, n_mods);
|
|
|
|
for (int i = 0; i < num_fourccs; i++)
|
|
{
|
|
int num_modifiers;
|
|
gboolean all_external;
|
|
|
|
eglQueryDmaBufModifiersEXT (egl_display,
|
|
fourccs[i],
|
|
0,
|
|
NULL,
|
|
NULL,
|
|
&num_modifiers);
|
|
|
|
if (num_modifiers > n_mods)
|
|
{
|
|
n_mods = num_modifiers;
|
|
modifiers = g_renew (guint64, modifiers, n_mods);
|
|
external_only = g_renew (unsigned int, external_only, n_mods);
|
|
}
|
|
|
|
eglQueryDmaBufModifiersEXT (egl_display,
|
|
fourccs[i],
|
|
num_modifiers,
|
|
modifiers,
|
|
external_only,
|
|
&num_modifiers);
|
|
|
|
all_external = TRUE;
|
|
|
|
for (int j = 0; j < num_modifiers; j++)
|
|
{
|
|
/* All linear formats we support are already added my the mmap downloader.
|
|
* We don't add external formats, unless we can use them (via GLES)
|
|
*/
|
|
if (modifiers[j] != DRM_FORMAT_MOD_LINEAR &&
|
|
(!external_only[j] || gdk_gl_context_get_use_es (context)))
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, DMABUF,
|
|
"%s EGL dmabuf format %.4s:%#" G_GINT64_MODIFIER "x",
|
|
external_only[j] ? "external " : "",
|
|
(char *) &fourccs[i],
|
|
modifiers[j]);
|
|
|
|
gdk_dmabuf_formats_builder_add_format (formats, fourccs[i], modifiers[j]);
|
|
}
|
|
if (external_only[j])
|
|
gdk_dmabuf_formats_builder_add_format (external, fourccs[i], modifiers[j]);
|
|
else
|
|
all_external = FALSE;
|
|
}
|
|
|
|
/* Accept implicit modifiers as long as we accept the format at all.
|
|
* This is a bit of a crapshot, but unfortunately needed for a bunch
|
|
* of drivers.
|
|
*
|
|
* As an extra wrinkle, treat the implicit modifier as 'external only'
|
|
* if all formats with the same fourcc are 'external only'.
|
|
*/
|
|
if (!all_external || gdk_gl_context_get_use_es (context))
|
|
gdk_dmabuf_formats_builder_add_format (formats, fourccs[i], DRM_FORMAT_MOD_INVALID);
|
|
if (all_external)
|
|
gdk_dmabuf_formats_builder_add_format (external, fourccs[i], DRM_FORMAT_MOD_INVALID);
|
|
}
|
|
|
|
g_free (modifiers);
|
|
g_free (external_only);
|
|
g_free (fourccs);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_dmabuf_egl_downloader_supports (const GdkDmabufDownloader *downloader,
|
|
GdkDmabufTexture *texture,
|
|
GError **error)
|
|
{
|
|
GdkDisplay *display = gdk_dmabuf_texture_get_display (texture);
|
|
const GdkDmabuf *dmabuf = gdk_dmabuf_texture_get_dmabuf (texture);
|
|
|
|
if (!gdk_dmabuf_formats_contains (display->egl_dmabuf_formats, dmabuf->fourcc, dmabuf->modifier))
|
|
{
|
|
g_set_error (error,
|
|
GDK_DMABUF_ERROR, GDK_DMABUF_ERROR_UNSUPPORTED_FORMAT,
|
|
"Unsupported dmabuf format: %.4s:%#" G_GINT64_MODIFIER "x",
|
|
(char *) &dmabuf->fourcc, dmabuf->modifier);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Hack. We don't include gsk/gsk.h here to avoid a build order problem
|
|
* with the generated header gskenumtypes.h, so we need to hack around
|
|
* a bit to access the gsk api we need.
|
|
*/
|
|
|
|
typedef gpointer GskRenderer;
|
|
|
|
extern GskRenderer * gsk_gl_renderer_new (void);
|
|
extern gboolean gsk_renderer_realize (GskRenderer *renderer,
|
|
GdkSurface *surface,
|
|
GError **error);
|
|
extern GdkTexture * gsk_renderer_convert_texture (GskRenderer *renderer,
|
|
GdkTexture *texture);
|
|
|
|
static GskRenderer *
|
|
get_gsk_renderer (GdkDisplay *display)
|
|
{
|
|
if (!display->egl_gsk_renderer)
|
|
{
|
|
GskRenderer *renderer;
|
|
GError *error = NULL;
|
|
|
|
renderer = gsk_gl_renderer_new ();
|
|
|
|
if (!gsk_renderer_realize (renderer, NULL, &error))
|
|
{
|
|
g_warning ("Failed to realize GL renderer: %s", error->message);
|
|
g_error_free (error);
|
|
g_object_unref (renderer);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
display->egl_gsk_renderer = renderer;
|
|
}
|
|
|
|
return display->egl_gsk_renderer;
|
|
}
|
|
|
|
static void
|
|
gdk_dmabuf_egl_downloader_download (const GdkDmabufDownloader *downloader_,
|
|
GdkDmabufTexture *texture,
|
|
GdkMemoryFormat format,
|
|
guchar *data,
|
|
gsize stride)
|
|
{
|
|
GdkGLContext *previous;
|
|
GdkDisplay *display;
|
|
GskRenderer *renderer;
|
|
GdkTexture *native;
|
|
GdkTextureDownloader *downloader;
|
|
|
|
previous = gdk_gl_context_get_current ();
|
|
|
|
display = gdk_dmabuf_texture_get_display (texture);
|
|
renderer = get_gsk_renderer (display);
|
|
|
|
native = gsk_renderer_convert_texture (renderer, GDK_TEXTURE (texture));
|
|
|
|
downloader = gdk_texture_downloader_new (native);
|
|
gdk_texture_downloader_set_format (downloader, format);
|
|
gdk_texture_downloader_download_into (downloader, data, stride);
|
|
gdk_texture_downloader_free (downloader);
|
|
|
|
g_object_unref (native);
|
|
|
|
if (previous)
|
|
gdk_gl_context_make_current (previous);
|
|
else
|
|
gdk_gl_context_clear_current ();
|
|
}
|
|
|
|
const GdkDmabufDownloader *
|
|
gdk_dmabuf_get_egl_downloader (GdkDisplay *display,
|
|
GdkDmabufFormatsBuilder *builder)
|
|
{
|
|
static const GdkDmabufDownloader downloader = {
|
|
"egl",
|
|
gdk_dmabuf_egl_downloader_supports,
|
|
gdk_dmabuf_egl_downloader_download,
|
|
};
|
|
GdkDmabufFormatsBuilder *formats;
|
|
GdkDmabufFormatsBuilder *external;
|
|
gboolean retval = FALSE;
|
|
|
|
g_assert (display->egl_dmabuf_formats == NULL);
|
|
g_assert (display->egl_external_formats == NULL);
|
|
|
|
if (!gdk_display_prepare_gl (display, NULL))
|
|
return NULL;
|
|
|
|
formats = gdk_dmabuf_formats_builder_new ();
|
|
external = gdk_dmabuf_formats_builder_new ();
|
|
|
|
retval = gdk_dmabuf_egl_downloader_collect_formats (display, formats, external);
|
|
|
|
display->egl_dmabuf_formats = gdk_dmabuf_formats_builder_free_to_formats (formats);
|
|
display->egl_external_formats = gdk_dmabuf_formats_builder_free_to_formats (external);
|
|
|
|
gdk_dmabuf_formats_builder_add_formats (builder, display->egl_dmabuf_formats);
|
|
|
|
if (retval)
|
|
return &downloader;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
EGLImage
|
|
gdk_dmabuf_egl_create_image (GdkDisplay *display,
|
|
int width,
|
|
int height,
|
|
const GdkDmabuf *dmabuf,
|
|
int target)
|
|
{
|
|
EGLDisplay egl_display = gdk_display_get_egl_display (display);
|
|
EGLint attribs[64];
|
|
int i;
|
|
EGLImage image;
|
|
|
|
g_return_val_if_fail (width > 0, 0);
|
|
g_return_val_if_fail (height > 0, 0);
|
|
g_return_val_if_fail (1 <= dmabuf->n_planes && dmabuf->n_planes <= 4, 0);
|
|
g_return_val_if_fail (target == GL_TEXTURE_2D || target == GL_TEXTURE_EXTERNAL_OES, 0);
|
|
|
|
if (egl_display == EGL_NO_DISPLAY || !display->have_egl_dma_buf_import)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, DMABUF,
|
|
"Can't import dmabufs into GL, missing EGL or EGL_EXT_image_dma_buf_import_modifiers");
|
|
return EGL_NO_IMAGE;
|
|
}
|
|
|
|
GDK_DISPLAY_DEBUG (display, DMABUF,
|
|
"Importing dmabuf (format: %.4s:%#" G_GINT64_MODIFIER "x, planes: %u) into GL",
|
|
(char *) &dmabuf->fourcc, dmabuf->modifier, dmabuf->n_planes);
|
|
|
|
i = 0;
|
|
attribs[i++] = EGL_IMAGE_PRESERVED_KHR;
|
|
attribs[i++] = EGL_TRUE;
|
|
attribs[i++] = EGL_WIDTH;
|
|
attribs[i++] = width;
|
|
attribs[i++] = EGL_HEIGHT;
|
|
attribs[i++] = height;
|
|
attribs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
|
|
attribs[i++] = dmabuf->fourcc;
|
|
attribs[i++] = EGL_YUV_COLOR_SPACE_HINT_EXT;
|
|
attribs[i++] = EGL_ITU_REC601_EXT;
|
|
attribs[i++] = EGL_SAMPLE_RANGE_HINT_EXT;
|
|
attribs[i++] = EGL_YUV_FULL_RANGE_EXT;
|
|
|
|
#define ADD_PLANE(plane) \
|
|
{ \
|
|
if (dmabuf->modifier != DRM_FORMAT_MOD_INVALID) \
|
|
{ \
|
|
attribs[i++] = EGL_DMA_BUF_PLANE## plane ##_MODIFIER_LO_EXT; \
|
|
attribs[i++] = dmabuf->modifier & 0xFFFFFFFF; \
|
|
attribs[i++] = EGL_DMA_BUF_PLANE## plane ## _MODIFIER_HI_EXT; \
|
|
attribs[i++] = dmabuf->modifier >> 32; \
|
|
} \
|
|
attribs[i++] = EGL_DMA_BUF_PLANE## plane ##_FD_EXT; \
|
|
attribs[i++] = dmabuf->planes[plane].fd; \
|
|
attribs[i++] = EGL_DMA_BUF_PLANE## plane ##_PITCH_EXT; \
|
|
attribs[i++] = dmabuf->planes[plane].stride; \
|
|
attribs[i++] = EGL_DMA_BUF_PLANE## plane ##_OFFSET_EXT; \
|
|
attribs[i++] = dmabuf->planes[plane].offset; \
|
|
}
|
|
|
|
ADD_PLANE (0);
|
|
|
|
if (dmabuf->n_planes > 1) ADD_PLANE (1);
|
|
if (dmabuf->n_planes > 2) ADD_PLANE (2);
|
|
if (dmabuf->n_planes > 3) ADD_PLANE (3);
|
|
|
|
attribs[i++] = EGL_NONE;
|
|
|
|
image = eglCreateImageKHR (egl_display,
|
|
EGL_NO_CONTEXT,
|
|
EGL_LINUX_DMA_BUF_EXT,
|
|
(EGLClientBuffer)NULL,
|
|
attribs);
|
|
|
|
if (image == EGL_NO_IMAGE)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, DMABUF,
|
|
"Creating EGLImage for dmabuf failed: %#x",
|
|
eglGetError ());
|
|
return 0;
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
#endif /* HAVE_DMABUF && HAVE_EGL */
|