blankie
/
wlroots
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge pull request #698 from agx/linux-dmabuf 

Add initial linux_dmabuf protocol support
This commit is contained in:
emersion 2018-03-15 12:45:07 +01:00 committed by GitHub
parent 85da9df807 653bc282a7
commit de0e40d621
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
16 changed files with 829 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/rootston/desktop.h
View File

@ -7,6 +7,7 @@
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_gamma_control.h>
#include <wlr/types/wlr_idle.h>
#include <wlr/types/wlr_linux_dmabuf.h>
#include <wlr/types/wlr_list.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output.h>
@ -46,6 +47,7 @@ struct roots_desktop {
struct wlr_primary_selection_device_manager *primary_selection_device_manager;
struct wlr_idle *idle;
struct wlr_idle_inhibit_manager_v1 *idle_inhibit;
struct wlr_linux_dmabuf *linux_dmabuf;
struct wl_listener new_output;
struct wl_listener layout_change;

3
include/wlr/render.h
View File

@ -85,6 +85,7 @@ struct wlr_texture {
bool valid;
uint32_t format;
int width, height;
bool inverted_y;
struct wl_signal destroy_signal;
struct wl_resource *resource;
};
@ -122,6 +123,8 @@ bool wlr_texture_upload_drm(struct wlr_texture *tex,
bool wlr_texture_upload_eglimage(struct wlr_texture *tex,
EGLImageKHR image, uint32_t width, uint32_t height);
bool wlr_texture_upload_dmabuf(struct wlr_texture *tex,
struct wl_resource *dmabuf_resource);
/**
* Copies a rectangle of pixels from a wl_shm_buffer onto the texture. The
* buffer is not accessed after this function returns. Under some circumstances,

28
include/wlr/render/egl.h
View File

@ -6,6 +6,7 @@
#include <pixman.h>
#include <stdbool.h>
#include <wayland-server.h>
#include <wlr/types/wlr_linux_dmabuf.h>
struct wlr_egl {
EGLDisplay display;
@ -18,6 +19,8 @@ struct wlr_egl {
struct {
bool buffer_age;
bool swap_buffers_with_damage;
bool dmabuf_import;
bool dmabuf_import_modifiers;
} egl_exts;
struct wl_display *wl_display;
@ -61,6 +64,31 @@ EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window);
EGLImageKHR wlr_egl_create_image(struct wlr_egl *egl,
EGLenum target, EGLClientBuffer buffer, const EGLint *attribs);
/**
* Creates an egl image from the given dmabuf attributes. Check usability
* of the dmabuf with wlr_egl_check_import_dmabuf once first.
*/
EGLImageKHR wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_buffer_attribs *attributes);
/**
* Try to import the given dmabuf. On success return true false otherwise.
* If this succeeds the dmabuf can be used for rendering on a texture
*/
bool wlr_egl_check_import_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_buffer *dmabuf);
/**
* Get the available dmabuf formats
*/
int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl, int **formats);
/**
* Get the available dmabuf modifiers for a given format
*/
int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl, int format,
uint64_t **modifiers);
/**
* Destroys an egl image created with the given wlr_egl.
*/

3
include/wlr/render/interface.h
View File

@ -8,6 +8,7 @@
#include <wlr/render.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_linux_dmabuf.h>
struct wlr_renderer_impl;
@ -58,6 +59,8 @@ struct wlr_texture_impl {
struct wl_resource *drm_buf);
bool (*upload_eglimage)(struct wlr_texture *texture, EGLImageKHR image,
uint32_t width, uint32_t height);
bool (*upload_dmabuf)(struct wlr_texture *texture,
struct wl_resource *dmabuf_resource);
void (*get_matrix)(struct wlr_texture *state,
float (*matrix)[16], const float (*projection)[16], int x, int y);
void (*get_buffer_size)(struct wlr_texture *texture,

84
include/wlr/types/wlr_linux_dmabuf.h Normal file
View File

@ -0,0 +1,84 @@
#ifndef WLR_TYPES_WLR_LINUX_DMABUF_H
#define WLR_TYPES_WLR_LINUX_DMABUF_H
#define WLR_LINUX_DMABUF_MAX_PLANES 4
#include <stdint.h>
#include <wayland-server-protocol.h>
/* So we don't have to pull in linux specific drm headers */
#ifndef DRM_FORMAT_MOD_INVALID
#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
#endif
struct wlr_dmabuf_buffer_attribs {
/* set via params_add */
int n_planes;
uint32_t offset[WLR_LINUX_DMABUF_MAX_PLANES];
uint32_t stride[WLR_LINUX_DMABUF_MAX_PLANES];
uint64_t modifier[WLR_LINUX_DMABUF_MAX_PLANES];
int fd[WLR_LINUX_DMABUF_MAX_PLANES];
/* set via params_create */
int32_t width;
int32_t height;
uint32_t format;
uint32_t flags; /* enum zlinux_buffer_params_flags */
};
struct wlr_dmabuf_buffer {
struct wlr_egl *egl;
struct wl_resource *buffer_resource;
struct wl_resource *params_resource;
struct wlr_dmabuf_buffer_attribs attributes;
};
/**
* Returns true if the given resource was created via the linux-dmabuf
* buffer protocol, false otherwise
*/
bool wlr_dmabuf_resource_is_buffer(struct wl_resource *buffer_resource);
/**
* Returns the wlr_dmabuf_buffer if the given resource was created
* via the linux-dmabuf buffer protocol
*/
struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_buffer_resource(
struct wl_resource *buffer_resource);
/**
* Returns the wlr_dmabuf_buffer if the given resource was created
* via the linux-dmabuf params protocol
*/
struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_params_resource(
struct wl_resource *params_resource);
/**
* Returns true if the given dmabuf has y-axis inverted, false otherwise
*/
bool wlr_dmabuf_buffer_has_inverted_y(struct wlr_dmabuf_buffer *dmabuf);
/* the protocol interface */
struct wlr_linux_dmabuf {
struct wl_global *wl_global;
struct wl_listener display_destroy;
struct wlr_egl *egl;
};
/**
* Create linux-dmabuf interface
*/
struct wlr_linux_dmabuf *wlr_linux_dmabuf_create(struct wl_display *display,
struct wlr_egl *egl);
/**
* Destroy the linux-dmabuf interface
*/
void wlr_linux_dmabuf_destroy(struct wlr_linux_dmabuf *linux_dmabuf);
/**
* Returns the wlr_linux_dmabuf if the given resource was created
* via the linux_dmabuf protocol
*/
struct wlr_linux_dmabuf *wlr_linux_dmabuf_from_resource(
struct wl_resource *resource);
#endif

3
protocol/meson.build
View File

@ -21,9 +21,10 @@ wayland_scanner_client = generator(
)
protocols = [
[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
[wl_protocol_dir, 'stable/xdg-shell/xdg-shell.xml'],
[wl_protocol_dir, 'unstable/idle-inhibit/idle-inhibit-unstable-v1.xml'],
[wl_protocol_dir, 'unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml'],
[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
'gamma-control.xml',
'gtk-primary-selection.xml',
'idle.xml',

135
render/egl.c
View File

@ -167,6 +167,12 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
check_egl_ext(egl->egl_exts_str, "EGL_EXT_swap_buffers_with_damage") ||
check_egl_ext(egl->egl_exts_str, "EGL_KHR_swap_buffers_with_damage");
egl->egl_exts.dmabuf_import =
check_egl_ext(egl->egl_exts_str, "EGL_EXT_image_dma_buf_import");
egl->egl_exts.dmabuf_import_modifiers =
check_egl_ext(egl->egl_exts_str, "EGL_EXT_image_dma_buf_import_modifiers")
&& eglQueryDmaBufFormatsEXT && eglQueryDmaBufModifiersEXT;
return true;
error:
@ -299,3 +305,132 @@ bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
}
return true;
}
EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_buffer_attribs *attributes) {
int atti = 0;
EGLint attribs[20];
attribs[atti++] = EGL_WIDTH;
attribs[atti++] = attributes->width;
attribs[atti++] = EGL_HEIGHT;
attribs[atti++] = attributes->height;
attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
attribs[atti++] = attributes->format;
bool has_modifier = false;
if (attributes->modifier[0] != DRM_FORMAT_MOD_INVALID) {
if (!egl->egl_exts.dmabuf_import_modifiers) {
return NULL;
}
has_modifier = true;
}
/* TODO: YUV planes have up four planes but we only support a
single EGLImage for now */
if (attributes->n_planes > 1) {
return NULL;
}
attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
attribs[atti++] = attributes->fd[0];
attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
attribs[atti++] = attributes->offset[0];
attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
attribs[atti++] = attributes->stride[0];
if (has_modifier) {
attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
attribs[atti++] = attributes->modifier[0] & 0xFFFFFFFF;
attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
attribs[atti++] = attributes->modifier[0] >> 32;
}
attribs[atti++] = EGL_NONE;
return eglCreateImageKHR(egl->display, EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
}
#ifndef DRM_FORMAT_BIG_ENDIAN
# define DRM_FORMAT_BIG_ENDIAN 0x80000000
#endif
bool wlr_egl_check_import_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_buffer *dmabuf) {
switch (dmabuf->attributes.format & ~DRM_FORMAT_BIG_ENDIAN) {
/* YUV based formats not yet supported */
case WL_SHM_FORMAT_YUYV:
case WL_SHM_FORMAT_YVYU:
case WL_SHM_FORMAT_UYVY:
case WL_SHM_FORMAT_VYUY:
case WL_SHM_FORMAT_AYUV:
return false;
default:
break;
}
EGLImage egl_image = wlr_egl_create_image_from_dmabuf(egl,
&dmabuf->attributes);
if (egl_image) {
/* We can import the image, good. No need to keep it
since wlr_texture_upload_dmabuf will import it again */
wlr_egl_destroy_image(egl, egl_image);
return true;
}
/* TODO: import yuv dmabufs */
return false;
}
int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl,
int **formats) {
if (!egl->egl_exts.dmabuf_import ||
!egl->egl_exts.dmabuf_import_modifiers) {
wlr_log(L_ERROR, "dmabuf extension not present");
return -1;
}
EGLint num;
if (!eglQueryDmaBufFormatsEXT(egl->display, 0, NULL, &num)) {
wlr_log(L_ERROR, "failed to query number of dmabuf formats");
return -1;
}
*formats = calloc(num, sizeof(int));
if (*formats == NULL) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return -1;
}
if (!eglQueryDmaBufFormatsEXT(egl->display, num, *formats, &num)) {
wlr_log(L_ERROR, "failed to query dmabuf format");
free(*formats);
return -1;
}
return num;
}
int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl,
int format, uint64_t **modifiers) {
if (!egl->egl_exts.dmabuf_import ||
!egl->egl_exts.dmabuf_import_modifiers) {
wlr_log(L_ERROR, "dmabuf extension not present");
return -1;
}
EGLint num;
if (!eglQueryDmaBufModifiersEXT(egl->display, format, 0,
NULL, NULL, &num)) {
wlr_log(L_ERROR, "failed to query dmabuf number of modifiers");
return -1;
}
*modifiers = calloc(num, sizeof(uint64_t));
if (*modifiers == NULL) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return -1;
}
if (!eglQueryDmaBufModifiersEXT(egl->display, format, num,
*modifiers, NULL, &num)) {
wlr_log(L_ERROR, "failed to query dmabuf modifiers");
free(*modifiers);
return -1;
}
return num;
}

2
render/glapi.txt
View File

@ -8,3 +8,5 @@ eglCreatePlatformWindowSurfaceEXT
-glEGLImageTargetTexture2DOES
-eglSwapBuffersWithDamageEXT
-eglSwapBuffersWithDamageKHR
-eglQueryDmaBufFormatsEXT
-eglQueryDmaBufModifiersEXT

3
render/gles2/renderer.c
View File

@ -179,7 +179,8 @@ static bool wlr_gles2_render_texture(struct wlr_renderer *wlr_renderer,
wlr_texture_bind(texture);
GL_CALL(glUniformMatrix4fv(0, 1, GL_FALSE, *matrix));
GL_CALL(glUniform1f(2, alpha));
GL_CALL(glUniform1i(1, texture->inverted_y));
GL_CALL(glUniform1f(3, alpha));
draw_quad();
return true;
}

60
render/gles2/shaders.c
View File

@ -10,17 +10,17 @@ const GLchar quad_vertex_src[] =
"varying vec4 v_color;"
"varying vec2 v_texcoord;"
"mat4 transpose(in mat4 inMatrix) {"
" vec4 i0 = inMatrix[0];"
" vec4 i1 = inMatrix[1];"
" vec4 i2 = inMatrix[2];"
" vec4 i3 = inMatrix[3];"
" mat4 outMatrix = mat4("
" vec4(i0.x, i1.x, i2.x, i3.x),"
" vec4(i0.y, i1.y, i2.y, i3.y),"
" vec4(i0.z, i1.z, i2.z, i3.z),"
" vec4(i0.w, i1.w, i2.w, i3.w)"
" );"
" return outMatrix;"
" vec4 i0 = inMatrix[0];"
" vec4 i1 = inMatrix[1];"
" vec4 i2 = inMatrix[2];"
" vec4 i3 = inMatrix[3];"
" mat4 outMatrix = mat4("
" vec4(i0.x, i1.x, i2.x, i3.x),"
" vec4(i0.y, i1.y, i2.y, i3.y),"
" vec4(i0.z, i1.z, i2.z, i3.z),"
" vec4(i0.w, i1.w, i2.w, i3.w)"
" );"
" return outMatrix;"
"}"
"void main() {"
" gl_Position = transpose(proj) * vec4(pos, 0.0, 1.0);"
@ -50,26 +50,30 @@ const GLchar ellipse_fragment_src[] =
// Textured quads
const GLchar vertex_src[] =
"uniform mat4 proj;"
"uniform bool invert_y;"
"attribute vec2 pos;"
"attribute vec2 texcoord;"
"varying vec2 v_texcoord;"
"mat4 transpose(in mat4 inMatrix) {"
" vec4 i0 = inMatrix[0];"
" vec4 i1 = inMatrix[1];"
" vec4 i2 = inMatrix[2];"
" vec4 i3 = inMatrix[3];"
" mat4 outMatrix = mat4("
" vec4(i0.x, i1.x, i2.x, i3.x),"
" vec4(i0.y, i1.y, i2.y, i3.y),"
" vec4(i0.z, i1.z, i2.z, i3.z),"
" vec4(i0.w, i1.w, i2.w, i3.w)"
" );"
""
" return outMatrix;"
" vec4 i0 = inMatrix[0];"
" vec4 i1 = inMatrix[1];"
" vec4 i2 = inMatrix[2];"
" vec4 i3 = inMatrix[3];"
" mat4 outMatrix = mat4("
" vec4(i0.x, i1.x, i2.x, i3.x),"
" vec4(i0.y, i1.y, i2.y, i3.y),"
" vec4(i0.z, i1.z, i2.z, i3.z),"
" vec4(i0.w, i1.w, i2.w, i3.w)"
" );"
" return outMatrix;"
"}"
"void main() {"
" gl_Position = transpose(proj) * vec4(pos, 0.0, 1.0);"
" v_texcoord = texcoord;"
" gl_Position = transpose(proj) * vec4(pos, 0.0, 1.0);"
" if (invert_y) {"
" v_texcoord = vec2(texcoord.s, 1.0 - texcoord.t);"
" } else {"
" v_texcoord = texcoord;"
" }"
"}";
const GLchar fragment_src_rgba[] =
@ -78,7 +82,7 @@ const GLchar fragment_src_rgba[] =
"uniform sampler2D tex;"
"uniform float alpha;"
"void main() {"
" gl_FragColor = alpha * texture2D(tex, v_texcoord);"
" gl_FragColor = alpha * texture2D(tex, v_texcoord);"
"}";
const GLchar fragment_src_rgbx[] =
@ -87,8 +91,8 @@ const GLchar fragment_src_rgbx[] =
"uniform sampler2D tex;"
"uniform float alpha;"
"void main() {"
" gl_FragColor.rgb = alpha * texture2D(tex, v_texcoord).rgb;"
" gl_FragColor.a = alpha;"
" gl_FragColor.rgb = alpha * texture2D(tex, v_texcoord).rgb;"
" gl_FragColor.a = alpha;"
"}";
const GLchar fragment_src_external[] =

63
render/gles2/texture.c
View File

@ -164,6 +164,7 @@ static bool gles2_texture_upload_drm(struct wlr_texture *_tex,
EGLint inverted_y;
wlr_egl_query_buffer(tex->egl, buf, EGL_WAYLAND_Y_INVERTED_WL, &inverted_y);
tex->wlr_texture.inverted_y = !!inverted_y;
GLenum target;
const struct pixel_format *pf;
@ -226,6 +227,42 @@ static bool gles2_texture_upload_eglimage(struct wlr_texture *wlr_tex,
return true;
}
static bool gles2_texture_upload_dmabuf(struct wlr_texture *_tex,
struct wl_resource *dmabuf_resource) {
struct wlr_gles2_texture *tex = (struct wlr_gles2_texture *)_tex;
struct wlr_dmabuf_buffer *dmabuf = wlr_dmabuf_buffer_from_buffer_resource(
dmabuf_resource);
if (!tex->egl->egl_exts.dmabuf_import) {
wlr_log(L_ERROR, "Want dmabuf but extension not present");
return false;
}
tex->wlr_texture.width = dmabuf->attributes.width;
tex->wlr_texture.height = dmabuf->attributes.height;
if (tex->image) {
wlr_egl_destroy_image(tex->egl, tex->image);
}
if (wlr_dmabuf_buffer_has_inverted_y(dmabuf)) {
_tex->inverted_y = true;
}
GLenum target = GL_TEXTURE_2D;
const struct pixel_format *pf =
gl_format_for_wl_format(WL_SHM_FORMAT_ARGB8888);
gles2_texture_ensure_texture(tex);
GL_CALL(glBindTexture(target, tex->tex_id));
tex->image = wlr_egl_create_image_from_dmabuf(tex->egl, &dmabuf->attributes);
GL_CALL(glActiveTexture(GL_TEXTURE0));
GL_CALL(glEGLImageTargetTexture2DOES(target, tex->image));
tex->pixel_format = pf;
tex->wlr_texture.valid = true;
return true;
}
static void gles2_texture_get_matrix(struct wlr_texture *_texture,
float (*matrix)[16], const float (*projection)[16], int x, int y) {
struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
@ -239,6 +276,21 @@ static void gles2_texture_get_matrix(struct wlr_texture *_texture,
wlr_matrix_mul(projection, matrix, matrix);
}
static bool gles2_texture_get_dmabuf_size(struct wlr_texture *texture, struct
wl_resource *resource, int *width, int *height) {
if (!wlr_dmabuf_resource_is_buffer(resource)) {
return false;
}
struct wlr_dmabuf_buffer *dmabuf = wlr_dmabuf_buffer_from_buffer_resource(
resource);
*width = dmabuf->attributes.width;
*height = dmabuf->attributes.height;
return true;
}
static void gles2_texture_get_buffer_size(struct wlr_texture *texture, struct
wl_resource *resource, int *width, int *height) {
struct wl_shm_buffer *buffer = wl_shm_buffer_get(resource);
@ -249,10 +301,12 @@ static void gles2_texture_get_buffer_size(struct wlr_texture *texture, struct
}
if (!wlr_egl_query_buffer(tex->egl, resource, EGL_WIDTH,
(EGLint*)width)) {
wlr_log(L_ERROR, "could not get size of the buffer "
"(no buffer found)");
return;
};
if (!gles2_texture_get_dmabuf_size(texture, resource,
width, height)) {
wlr_log(L_ERROR, "could not get size of the buffer");
return;
}
}
wlr_egl_query_buffer(tex->egl, resource, EGL_HEIGHT,
(EGLint*)height);
@ -291,6 +345,7 @@ static struct wlr_texture_impl wlr_texture_impl = {
.upload_shm = gles2_texture_upload_shm,
.update_shm = gles2_texture_update_shm,
.upload_drm = gles2_texture_upload_drm,
.upload_dmabuf = gles2_texture_upload_dmabuf,
.upload_eglimage = gles2_texture_upload_eglimage,
.get_matrix = gles2_texture_get_matrix,
.get_buffer_size = gles2_texture_get_buffer_size,

5
render/wlr_texture.c
View File

@ -53,6 +53,11 @@ bool wlr_texture_upload_eglimage(struct wlr_texture *texture,
return texture->impl->upload_eglimage(texture, image, width, height);
}
bool wlr_texture_upload_dmabuf(struct wlr_texture *texture,
struct wl_resource *dmabuf_resource) {
return texture->impl->upload_dmabuf(texture, dmabuf_resource);
}
void wlr_texture_get_matrix(struct wlr_texture *texture,
float (*matrix)[16], const float (*projection)[16], int x, int y) {
texture->impl->get_matrix(texture, matrix, projection, x, y);

3
rootston/desktop.c
View File

@ -9,6 +9,7 @@
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_gamma_control.h>
#include <wlr/types/wlr_idle.h>
#include <wlr/types/wlr_linux_dmabuf.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_idle_inhibit_v1.h>
#include <wlr/types/wlr_primary_selection.h>
@ -729,6 +730,8 @@ struct roots_desktop *desktop_create(struct roots_server *server,
desktop->idle = wlr_idle_create(server->wl_display);
desktop->idle_inhibit = wlr_idle_inhibit_v1_create(server->wl_display);
struct wlr_egl *egl = wlr_backend_get_egl(server->backend);
desktop->linux_dmabuf = wlr_linux_dmabuf_create(server->wl_display, egl);
return desktop;
}

1
types/meson.build
View File

@ -9,6 +9,7 @@ lib_wlr_types = static_library(
'wlr_idle.c',
'wlr_input_device.c',
'wlr_keyboard.c',
'wlr_linux_dmabuf.c',
'wlr_list.c',
'wlr_output_damage.c',
'wlr_output_layout.c',

464
types/wlr_linux_dmabuf.c Normal file
View File

@ -0,0 +1,464 @@
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#endif
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <wayland-server.h>
#include <wlr/render.h>
#include <wlr/render/egl.h>
#include <wlr/types/wlr_linux_dmabuf.h>
#include <wlr/util/log.h>
#include "linux-dmabuf-unstable-v1-protocol.h"
static void wl_buffer_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static const struct wl_buffer_interface wl_buffer_impl = {
wl_buffer_destroy,
};
bool wlr_dmabuf_buffer_has_inverted_y(struct wlr_dmabuf_buffer *dmabuf) {
return dmabuf->attributes.flags
& ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
}
bool wlr_dmabuf_resource_is_buffer(struct wl_resource *buffer_resource) {
if (!wl_resource_instance_of(buffer_resource, &wl_buffer_interface,
&wl_buffer_impl)) {
return false;
}
struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(buffer_resource);
if (buffer && buffer->buffer_resource && !buffer->params_resource &&
buffer->buffer_resource == buffer_resource) {
return true;
}
return false;
}
struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_buffer_resource(
struct wl_resource *buffer_resource) {
assert(wl_resource_instance_of(buffer_resource, &wl_buffer_interface,
&wl_buffer_impl));
struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(buffer_resource);
assert(buffer);
assert(buffer->buffer_resource);
assert(!buffer->params_resource);
assert(buffer->buffer_resource == buffer_resource);
return buffer;
}
static void linux_dmabuf_buffer_destroy(struct wlr_dmabuf_buffer *buffer) {
for (int i = 0; i < buffer->attributes.n_planes; i++) {
close(buffer->attributes.fd[i]);
buffer->attributes.fd[i] = -1;
}
buffer->attributes.n_planes = 0;
free(buffer);
}
static void params_destroy(struct wl_client *client, struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static void params_add(struct wl_client *client,
struct wl_resource *params_resource, int32_t name_fd,
uint32_t plane_idx, uint32_t offset, uint32_t stride,
uint32_t modifier_hi, uint32_t modifier_lo) {
struct wlr_dmabuf_buffer *buffer = wlr_dmabuf_buffer_from_params_resource(
params_resource);
if (!buffer) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ALREADY_USED,
"params was already used to create a wl_buffer");
close(name_fd);
return;
}
if (plane_idx >= WLR_LINUX_DMABUF_MAX_PLANES) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_IDX,
"plane index %u > %u", plane_idx, WLR_LINUX_DMABUF_MAX_PLANES);
close(name_fd);
return;
}
if (buffer->attributes.fd[plane_idx] != -1) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_SET,
"a dmabuf with id %d has already been added for plane %u",
buffer->attributes.fd[plane_idx],
plane_idx);
close(name_fd);
return;
}
buffer->attributes.fd[plane_idx] = name_fd;
buffer->attributes.offset[plane_idx] = offset;
buffer->attributes.stride[plane_idx] = stride;
buffer->attributes.modifier[plane_idx] = ((uint64_t)modifier_hi << 32) |
modifier_lo;
buffer->attributes.n_planes++;
}
static void handle_buffer_destroy(struct wl_resource *buffer_resource)
{
struct wlr_dmabuf_buffer *buffer = wlr_dmabuf_buffer_from_buffer_resource(
buffer_resource);
linux_dmabuf_buffer_destroy(buffer);
}
static void params_create_common(struct wl_client *client,
struct wl_resource *params_resource, uint32_t buffer_id, int32_t width,
int32_t height, uint32_t format, uint32_t flags) {
if (!wl_resource_get_user_data(params_resource)) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ALREADY_USED,
"params was already used to create a wl_buffer");
return;
}
struct wlr_dmabuf_buffer *buffer = wlr_dmabuf_buffer_from_params_resource(
params_resource);
/* Switch the linux_dmabuf_buffer object from params resource to
* eventually wl_buffer resource. */
wl_resource_set_user_data(buffer->params_resource, NULL);
buffer->params_resource = NULL;
if (!buffer->attributes.n_planes) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
"no dmabuf has been added to the params");
goto err_out;
}
/* TODO: support more planes */
if (buffer->attributes.n_planes != 1) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
"only single plane buffers supported not %d",
buffer->attributes.n_planes);
goto err_out;
}
if (buffer->attributes.fd[0] == -1) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
"no dmabuf has been added for plane");
goto err_out;
}
buffer->attributes.width = width;
buffer->attributes.height = height;
buffer->attributes.format = format;
buffer->attributes.flags = flags;
if (width < 1 || height < 1) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_DIMENSIONS,
"invalid width %d or height %d", width, height);
goto err_out;
}
if ((uint64_t)buffer->attributes.offset[0] + buffer->attributes.stride[0] > UINT32_MAX) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
"size overflow for plane");
goto err_out;
}
if ((uint64_t)buffer->attributes.offset[0] +
(uint64_t)buffer->attributes.stride[0] * height > UINT32_MAX) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
"size overflow for plane");
goto err_out;
}
off_t size = lseek(buffer->attributes.fd[0], 0, SEEK_END);
if (size != -1) { /* Skip checks if kernel does no support seek on buffer */
if (buffer->attributes.offset[0] >= size) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
"invalid offset %i for plane",
buffer->attributes.offset[0]);
goto err_out;
}
if (buffer->attributes.offset[0] + buffer->attributes.stride[0] > size) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
"invalid stride %i for plane",
buffer->attributes.stride[0]);
goto err_out;
}
if (buffer->attributes.offset[0] + buffer->attributes.stride[0] * height > size) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
"invalid buffer stride or height for plane");
goto err_out;
}
}
/* reject unknown flags */
if (buffer->attributes.flags & ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT,
"Unknown dmabuf flags %"PRIu32, buffer->attributes.flags);
goto err_out;
}
/* Check if dmabuf is usable */
if (!wlr_egl_check_import_dmabuf(buffer->egl, buffer)) {
goto err_failed;
}
buffer->buffer_resource = wl_resource_create(client, &wl_buffer_interface,
1, buffer_id);
if (!buffer->buffer_resource) {
wl_resource_post_no_memory(params_resource);
goto err_failed;
}
wl_resource_set_implementation(buffer->buffer_resource,
&wl_buffer_impl, buffer, handle_buffer_destroy);
/* send 'created' event when the request is not for an immediate
* import, that is buffer_id is zero */
if (buffer_id == 0) {
zwp_linux_buffer_params_v1_send_created(params_resource,
buffer->buffer_resource);
}
return;
err_failed:
if (buffer_id == 0) {
zwp_linux_buffer_params_v1_send_failed(params_resource);
} else {
/* since the behavior is left implementation defined by the
* protocol in case of create_immed failure due to an unknown cause,
* we choose to treat it as a fatal error and immediately kill the
* client instead of creating an invalid handle and waiting for it
* to be used.
*/
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_WL_BUFFER,
"importing the supplied dmabufs failed");
}
err_out:
linux_dmabuf_buffer_destroy(buffer);
return;
}
static void params_create(struct wl_client *client,
struct wl_resource *params_resource,
int32_t width, int32_t height,uint32_t format, uint32_t flags) {
params_create_common(client, params_resource, 0, width, height, format, flags);
}
static void params_create_immed(struct wl_client *client,
struct wl_resource *params_resource, uint32_t buffer_id,
int32_t width, int32_t height,uint32_t format, uint32_t flags) {
params_create_common(client, params_resource, buffer_id, width, height, format, flags);
}
static const struct zwp_linux_buffer_params_v1_interface linux_buffer_params_impl = {
params_destroy,
params_add,
params_create,
params_create_immed,
};
struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_params_resource(
struct wl_resource *params_resource) {
assert(wl_resource_instance_of(params_resource,
&zwp_linux_buffer_params_v1_interface,
&linux_buffer_params_impl));
struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(params_resource);
assert(buffer);
assert(buffer->params_resource);
assert(!buffer->buffer_resource);
assert(buffer->params_resource == params_resource);
return buffer;
}
static void handle_params_destroy(struct wl_resource *params_resource) {
/* Check for NULL since wlr_dmabuf_buffer_from_params_resource will choke */
if (!wl_resource_get_user_data(params_resource)) {
return;
}
struct wlr_dmabuf_buffer *buffer =
wlr_dmabuf_buffer_from_params_resource(params_resource);
linux_dmabuf_buffer_destroy(buffer);
}
static void linux_dmabuf_create_params(struct wl_client *client,
struct wl_resource *linux_dmabuf_resource,
uint32_t params_id) {
struct wlr_linux_dmabuf *linux_dmabuf = wlr_linux_dmabuf_from_resource(
linux_dmabuf_resource);
uint32_t version = wl_resource_get_version(linux_dmabuf_resource);
struct wlr_dmabuf_buffer *buffer = calloc(1, sizeof *buffer);
if (!buffer) {
goto err;
}
for (int i = 0; i < WLR_LINUX_DMABUF_MAX_PLANES; i++) {
buffer->attributes.fd[i] = -1;
}
buffer->egl = linux_dmabuf->egl;
buffer->params_resource = wl_resource_create(client,
&zwp_linux_buffer_params_v1_interface,
version, params_id);
if (!buffer->params_resource) {
goto err_free;
}
wl_resource_set_implementation(buffer->params_resource,
&linux_buffer_params_impl,buffer, handle_params_destroy);
return;
err_free:
free(buffer);
err:
wl_resource_post_no_memory(linux_dmabuf_resource);
}
static void linux_dmabuf_destroy(struct wl_client *client, struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static const struct zwp_linux_dmabuf_v1_interface linux_dmabuf_impl = {
linux_dmabuf_destroy,
linux_dmabuf_create_params
};
struct wlr_linux_dmabuf *wlr_linux_dmabuf_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource, &zwp_linux_dmabuf_v1_interface,
&linux_dmabuf_impl));
struct wlr_linux_dmabuf *dmabuf = wl_resource_get_user_data(resource);
assert(dmabuf);
return dmabuf;
}
static void linux_dmabuf_send_modifiers(struct wlr_linux_dmabuf *linux_dmabuf,
struct wl_resource *resource) {
struct wlr_egl *egl = linux_dmabuf->egl;
/*
* Use EGL_EXT_image_dma_buf_import_modifiers to query and advertise
* format/modifier codes.
*/
uint64_t modifier_invalid = DRM_FORMAT_MOD_INVALID;
int *formats = NULL;
int num_formats = wlr_egl_get_dmabuf_formats(egl, &formats);
if (num_formats < 0) {
return;
}
for (int i = 0; i < num_formats; i++) {
int num_modifiers;
uint64_t *modifiers = NULL;
num_modifiers = wlr_egl_get_dmabuf_modifiers(egl, formats[i],
&modifiers);
if (num_modifiers < 0) {
return;
}
/* send DRM_FORMAT_MOD_INVALID token when no modifiers are supported
* for this format */
if (num_modifiers == 0) {
num_modifiers = 1;
modifiers = &modifier_invalid;
}
for (int j = 0; j < num_modifiers; j++) {
uint32_t modifier_lo = modifiers[j] & 0xFFFFFFFF;
uint32_t modifier_hi = modifiers[j] >> 32;
zwp_linux_dmabuf_v1_send_modifier(resource, formats[i],
modifier_hi,
modifier_lo);
}
if (modifiers != &modifier_invalid) {
free(modifiers);
}
}
free(formats);
}
static void linux_dmabuf_bind(struct wl_client *client,
void *data, uint32_t version, uint32_t id) {
struct wlr_linux_dmabuf *linux_dmabuf = data;
struct wl_resource *resource = wl_resource_create(client,
&zwp_linux_dmabuf_v1_interface,
version, id);
if (resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource, &linux_dmabuf_impl,
linux_dmabuf, NULL);
if (version < ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION) {
return;
}
linux_dmabuf_send_modifiers(linux_dmabuf, resource);
}
void wlr_linux_dmabuf_destroy(struct wlr_linux_dmabuf *linux_dmabuf) {
if (!linux_dmabuf) {
return;
}
wl_list_remove(&linux_dmabuf->display_destroy.link);
wl_global_destroy(linux_dmabuf->wl_global);
free(linux_dmabuf);
}
static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_linux_dmabuf *linux_dmabuf = wl_container_of(listener, linux_dmabuf, display_destroy);
wlr_linux_dmabuf_destroy(linux_dmabuf);
}
struct wlr_linux_dmabuf *wlr_linux_dmabuf_create(struct wl_display *display,
struct wlr_egl *egl) {
struct wlr_linux_dmabuf *linux_dmabuf =
calloc(1, sizeof(struct wlr_linux_dmabuf));
if (linux_dmabuf == NULL) {
wlr_log(L_ERROR, "could not create simple dmabuf manager");
return NULL;
}
linux_dmabuf->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &linux_dmabuf->display_destroy);
linux_dmabuf->wl_global =
wl_global_create(display, &zwp_linux_dmabuf_v1_interface,
3, linux_dmabuf, linux_dmabuf_bind);
linux_dmabuf->egl = egl;
if (!linux_dmabuf->wl_global) {
wlr_log(L_ERROR, "could not create linux dmabuf v1 wl global");
free(linux_dmabuf);
return NULL;
}
return linux_dmabuf;
}

4
types/wlr_surface.c
View File

@ -325,6 +325,10 @@ static void wlr_surface_apply_damage(struct wlr_surface *surface,
surface->current->buffer)) {
wlr_texture_upload_drm(surface->texture, surface->current->buffer);
goto release;
} else if (wlr_dmabuf_resource_is_buffer(
surface->current->buffer)) {
wlr_texture_upload_dmabuf(surface->texture, surface->current->buffer);
goto release;
} else {
wlr_log(L_INFO, "Unknown buffer handle attached");
return;