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weston/libweston/renderer-gl/gl-renderer.c
Pekka Paalanen 88e5fcb55a gl-renderer: pbuffer config for non-surfaceless 
If we don't have the surfaceless_context extension, we create a pbuffer as a
dummy surface to work with. If we also don't have configless_context, then it
is possible the config used for creating the context does not support pbuffers.
Therefore, if both conditions apply, we need to pick a config that supports
both window and pbuffer surfaces.

This makes the "base" config compatible, but it does not yet guarantee that we
actually pick it again when creating the pbuffer surface. Fixing that is
another patch.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2019-10-04 12:17:18 +03:00

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/*
* Copyright © 2012 Intel Corporation
* Copyright © 2015,2019 Collabora, Ltd.
* Copyright © 2016 NVIDIA Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <float.h>
#include <assert.h>
#include <linux/input.h>
#include <drm_fourcc.h>
#include <unistd.h>
#include "linux-sync-file.h"
#include "timeline.h"
#include "gl-renderer.h"
#include "gl-renderer-internal.h"
#include "vertex-clipping.h"
#include "linux-dmabuf.h"
#include "linux-dmabuf-unstable-v1-server-protocol.h"
#include "linux-explicit-synchronization.h"
#include "pixel-formats.h"
#include "shared/fd-util.h"
#include "shared/helpers.h"
#include "shared/platform.h"
#include "shared/timespec-util.h"
#include "weston-egl-ext.h"
#define GR_GL_VERSION(major, minor) \
(((uint32_t)(major) << 16) | (uint32_t)(minor))
#define GR_GL_VERSION_INVALID \
GR_GL_VERSION(0, 0)
#define BUFFER_DAMAGE_COUNT 2
enum gl_border_status {
BORDER_STATUS_CLEAN = 0,
BORDER_TOP_DIRTY = 1 << GL_RENDERER_BORDER_TOP,
BORDER_LEFT_DIRTY = 1 << GL_RENDERER_BORDER_LEFT,
BORDER_RIGHT_DIRTY = 1 << GL_RENDERER_BORDER_RIGHT,
BORDER_BOTTOM_DIRTY = 1 << GL_RENDERER_BORDER_BOTTOM,
BORDER_ALL_DIRTY = 0xf,
BORDER_SIZE_CHANGED = 0x10
};
struct gl_border_image {
GLuint tex;
int32_t width, height;
int32_t tex_width;
void *data;
};
struct gl_output_state {
EGLSurface egl_surface;
pixman_region32_t buffer_damage[BUFFER_DAMAGE_COUNT];
int buffer_damage_index;
enum gl_border_status border_damage[BUFFER_DAMAGE_COUNT];
struct gl_border_image borders[4];
enum gl_border_status border_status;
struct weston_matrix output_matrix;
EGLSyncKHR begin_render_sync, end_render_sync;
/* struct timeline_render_point::link */
struct wl_list timeline_render_point_list;
};
enum buffer_type {
BUFFER_TYPE_NULL,
BUFFER_TYPE_SOLID, /* internal solid color surfaces without a buffer */
BUFFER_TYPE_SHM,
BUFFER_TYPE_EGL
};
struct gl_renderer;
struct egl_image {
struct gl_renderer *renderer;
EGLImageKHR image;
int refcount;
};
enum import_type {
IMPORT_TYPE_INVALID,
IMPORT_TYPE_DIRECT,
IMPORT_TYPE_GL_CONVERSION
};
struct dmabuf_image {
struct linux_dmabuf_buffer *dmabuf;
int num_images;
struct egl_image *images[3];
struct wl_list link;
enum import_type import_type;
GLenum target;
struct gl_shader *shader;
};
struct yuv_plane_descriptor {
int width_divisor;
int height_divisor;
uint32_t format;
int plane_index;
};
struct yuv_format_descriptor {
uint32_t format;
int input_planes;
int output_planes;
int texture_type;
struct yuv_plane_descriptor plane[4];
};
struct gl_surface_state {
GLfloat color[4];
struct gl_shader *shader;
GLuint textures[3];
int num_textures;
bool needs_full_upload;
pixman_region32_t texture_damage;
/* These are only used by SHM surfaces to detect when we need
* to do a full upload to specify a new internal texture
* format */
GLenum gl_format[3];
GLenum gl_pixel_type;
struct egl_image* images[3];
GLenum target;
int num_images;
struct weston_buffer_reference buffer_ref;
struct weston_buffer_release_reference buffer_release_ref;
enum buffer_type buffer_type;
int pitch; /* in pixels */
int height; /* in pixels */
bool y_inverted;
/* Extension needed for SHM YUV texture */
int offset[3]; /* offset per plane */
int hsub[3]; /* horizontal subsampling per plane */
int vsub[3]; /* vertical subsampling per plane */
struct weston_surface *surface;
/* Whether this surface was used in the current output repaint.
Used only in the context of a gl_renderer_repaint_output call. */
bool used_in_output_repaint;
struct wl_listener surface_destroy_listener;
struct wl_listener renderer_destroy_listener;
};
enum timeline_render_point_type {
TIMELINE_RENDER_POINT_TYPE_BEGIN,
TIMELINE_RENDER_POINT_TYPE_END
};
struct timeline_render_point {
struct wl_list link; /* gl_output_state::timeline_render_point_list */
enum timeline_render_point_type type;
int fd;
struct weston_output *output;
struct wl_event_source *event_source;
};
static PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display = NULL;
static inline const char *
dump_format(uint32_t format, char out[4])
{
#if BYTE_ORDER == BIG_ENDIAN
format = __builtin_bswap32(format);
#endif
memcpy(out, &format, 4);
return out;
}
static inline struct gl_output_state *
get_output_state(struct weston_output *output)
{
return (struct gl_output_state *)output->renderer_state;
}
static int
gl_renderer_create_surface(struct weston_surface *surface);
static inline struct gl_surface_state *
get_surface_state(struct weston_surface *surface)
{
if (!surface->renderer_state)
gl_renderer_create_surface(surface);
return (struct gl_surface_state *)surface->renderer_state;
}
static void
timeline_render_point_destroy(struct timeline_render_point *trp)
{
wl_list_remove(&trp->link);
wl_event_source_remove(trp->event_source);
close(trp->fd);
free(trp);
}
static int
timeline_render_point_handler(int fd, uint32_t mask, void *data)
{
struct timeline_render_point *trp = data;
const char *tp_name = trp->type == TIMELINE_RENDER_POINT_TYPE_BEGIN ?
"renderer_gpu_begin" : "renderer_gpu_end";
if (mask & WL_EVENT_READABLE) {
struct timespec tspec = { 0 };
if (weston_linux_sync_file_read_timestamp(trp->fd,
&tspec) == 0) {
TL_POINT(tp_name, TLP_GPU(&tspec),
TLP_OUTPUT(trp->output), TLP_END);
}
}
timeline_render_point_destroy(trp);
return 0;
}
static EGLSyncKHR
create_render_sync(struct gl_renderer *gr)
{
static const EGLint attribs[] = { EGL_NONE };
if (!gr->has_native_fence_sync)
return EGL_NO_SYNC_KHR;
return gr->create_sync(gr->egl_display, EGL_SYNC_NATIVE_FENCE_ANDROID,
attribs);
}
static void
timeline_submit_render_sync(struct gl_renderer *gr,
struct weston_compositor *ec,
struct weston_output *output,
EGLSyncKHR sync,
enum timeline_render_point_type type)
{
struct gl_output_state *go;
struct wl_event_loop *loop;
int fd;
struct timeline_render_point *trp;
if (!weston_timeline_enabled_ ||
!gr->has_native_fence_sync ||
sync == EGL_NO_SYNC_KHR)
return;
go = get_output_state(output);
loop = wl_display_get_event_loop(ec->wl_display);
fd = gr->dup_native_fence_fd(gr->egl_display, sync);
if (fd == EGL_NO_NATIVE_FENCE_FD_ANDROID)
return;
trp = zalloc(sizeof *trp);
if (trp == NULL) {
close(fd);
return;
}
trp->type = type;
trp->fd = fd;
trp->output = output;
trp->event_source = wl_event_loop_add_fd(loop, fd,
WL_EVENT_READABLE,
timeline_render_point_handler,
trp);
wl_list_insert(&go->timeline_render_point_list, &trp->link);
}
static struct egl_image*
egl_image_create(struct gl_renderer *gr, EGLenum target,
EGLClientBuffer buffer, const EGLint *attribs)
{
struct egl_image *img;
img = zalloc(sizeof *img);
img->renderer = gr;
img->refcount = 1;
img->image = gr->create_image(gr->egl_display, EGL_NO_CONTEXT,
target, buffer, attribs);
if (img->image == EGL_NO_IMAGE_KHR) {
free(img);
return NULL;
}
return img;
}
static struct egl_image*
egl_image_ref(struct egl_image *image)
{
image->refcount++;
return image;
}
static int
egl_image_unref(struct egl_image *image)
{
struct gl_renderer *gr = image->renderer;
assert(image->refcount > 0);
image->refcount--;
if (image->refcount > 0)
return image->refcount;
gr->destroy_image(gr->egl_display, image->image);
free(image);
return 0;
}
static struct dmabuf_image*
dmabuf_image_create(void)
{
struct dmabuf_image *img;
img = zalloc(sizeof *img);
wl_list_init(&img->link);
return img;
}
static void
dmabuf_image_destroy(struct dmabuf_image *image)
{
int i;
for (i = 0; i < image->num_images; ++i)
egl_image_unref(image->images[i]);
if (image->dmabuf)
linux_dmabuf_buffer_set_user_data(image->dmabuf, NULL, NULL);
wl_list_remove(&image->link);
free(image);
}
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) > (b)) ? (b) : (a))
/*
* Compute the boundary vertices of the intersection of the global coordinate
* aligned rectangle 'rect', and an arbitrary quadrilateral produced from
* 'surf_rect' when transformed from surface coordinates into global coordinates.
* The vertices are written to 'ex' and 'ey', and the return value is the
* number of vertices. Vertices are produced in clockwise winding order.
* Guarantees to produce either zero vertices, or 3-8 vertices with non-zero
* polygon area.
*/
static int
calculate_edges(struct weston_view *ev, pixman_box32_t *rect,
pixman_box32_t *surf_rect, GLfloat *ex, GLfloat *ey)
{
struct clip_context ctx;
int i, n;
GLfloat min_x, max_x, min_y, max_y;
struct polygon8 surf = {
{ surf_rect->x1, surf_rect->x2, surf_rect->x2, surf_rect->x1 },
{ surf_rect->y1, surf_rect->y1, surf_rect->y2, surf_rect->y2 },
4
};
ctx.clip.x1 = rect->x1;
ctx.clip.y1 = rect->y1;
ctx.clip.x2 = rect->x2;
ctx.clip.y2 = rect->y2;
/* transform surface to screen space: */
for (i = 0; i < surf.n; i++)
weston_view_to_global_float(ev, surf.x[i], surf.y[i],
&surf.x[i], &surf.y[i]);
/* find bounding box: */
min_x = max_x = surf.x[0];
min_y = max_y = surf.y[0];
for (i = 1; i < surf.n; i++) {
min_x = min(min_x, surf.x[i]);
max_x = max(max_x, surf.x[i]);
min_y = min(min_y, surf.y[i]);
max_y = max(max_y, surf.y[i]);
}
/* First, simple bounding box check to discard early transformed
* surface rects that do not intersect with the clip region:
*/
if ((min_x >= ctx.clip.x2) || (max_x <= ctx.clip.x1) ||
(min_y >= ctx.clip.y2) || (max_y <= ctx.clip.y1))
return 0;
/* Simple case, bounding box edges are parallel to surface edges,
* there will be only four edges. We just need to clip the surface
* vertices to the clip rect bounds:
*/
if (!ev->transform.enabled)
return clip_simple(&ctx, &surf, ex, ey);
/* Transformed case: use a general polygon clipping algorithm to
* clip the surface rectangle with each side of 'rect'.
* The algorithm is Sutherland-Hodgman, as explained in
* http://www.codeguru.com/cpp/misc/misc/graphics/article.php/c8965/Polygon-Clipping.htm
* but without looking at any of that code.
*/
n = clip_transformed(&ctx, &surf, ex, ey);
if (n < 3)
return 0;
return n;
}
static bool
merge_down(pixman_box32_t *a, pixman_box32_t *b, pixman_box32_t *merge)
{
if (a->x1 == b->x1 && a->x2 == b->x2 && a->y1 == b->y2) {
merge->x1 = a->x1;
merge->x2 = a->x2;
merge->y1 = b->y1;
merge->y2 = a->y2;
return true;
}
return false;
}
static int
compress_bands(pixman_box32_t *inrects, int nrects,
pixman_box32_t **outrects)
{
bool merged = false;
pixman_box32_t *out, merge_rect;
int i, j, nout;
if (!nrects) {
*outrects = NULL;
return 0;
}
/* nrects is an upper bound - we're not too worried about
* allocating a little extra
*/
out = malloc(sizeof(pixman_box32_t) * nrects);
out[0] = inrects[0];
nout = 1;
for (i = 1; i < nrects; i++) {
for (j = 0; j < nout; j++) {
merged = merge_down(&inrects[i], &out[j], &merge_rect);
if (merged) {
out[j] = merge_rect;
break;
}
}
if (!merged) {
out[nout] = inrects[i];
nout++;
}
}
*outrects = out;
return nout;
}
static int
texture_region(struct weston_view *ev, pixman_region32_t *region,
pixman_region32_t *surf_region)
{
struct gl_surface_state *gs = get_surface_state(ev->surface);
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
GLfloat *v, inv_width, inv_height;
unsigned int *vtxcnt, nvtx = 0;
pixman_box32_t *rects, *surf_rects;
pixman_box32_t *raw_rects;
int i, j, k, nrects, nsurf, raw_nrects;
bool used_band_compression;
raw_rects = pixman_region32_rectangles(region, &raw_nrects);
surf_rects = pixman_region32_rectangles(surf_region, &nsurf);
if (raw_nrects < 4) {
used_band_compression = false;
nrects = raw_nrects;
rects = raw_rects;
} else {
nrects = compress_bands(raw_rects, raw_nrects, &rects);
used_band_compression = true;
}
/* worst case we can have 8 vertices per rect (ie. clipped into
* an octagon):
*/
v = wl_array_add(&gr->vertices, nrects * nsurf * 8 * 4 * sizeof *v);
vtxcnt = wl_array_add(&gr->vtxcnt, nrects * nsurf * sizeof *vtxcnt);
inv_width = 1.0 / gs->pitch;
inv_height = 1.0 / gs->height;
for (i = 0; i < nrects; i++) {
pixman_box32_t *rect = &rects[i];
for (j = 0; j < nsurf; j++) {
pixman_box32_t *surf_rect = &surf_rects[j];
GLfloat sx, sy, bx, by;
GLfloat ex[8], ey[8]; /* edge points in screen space */
int n;
/* The transformed surface, after clipping to the clip region,
* can have as many as eight sides, emitted as a triangle-fan.
* The first vertex in the triangle fan can be chosen arbitrarily,
* since the area is guaranteed to be convex.
*
* If a corner of the transformed surface falls outside of the
* clip region, instead of emitting one vertex for the corner
* of the surface, up to two are emitted for two corresponding
* intersection point(s) between the surface and the clip region.
*
* To do this, we first calculate the (up to eight) points that
* form the intersection of the clip rect and the transformed
* surface.
*/
n = calculate_edges(ev, rect, surf_rect, ex, ey);
if (n < 3)
continue;
/* emit edge points: */
for (k = 0; k < n; k++) {
weston_view_from_global_float(ev, ex[k], ey[k],
&sx, &sy);
/* position: */
*(v++) = ex[k];
*(v++) = ey[k];
/* texcoord: */
weston_surface_to_buffer_float(ev->surface,
sx, sy,
&bx, &by);
*(v++) = bx * inv_width;
if (gs->y_inverted) {
*(v++) = by * inv_height;
} else {
*(v++) = (gs->height - by) * inv_height;
}
}
vtxcnt[nvtx++] = n;
}
}
if (used_band_compression)
free(rects);
return nvtx;
}
static void
triangle_fan_debug(struct weston_view *view, int first, int count)
{
struct weston_compositor *compositor = view->surface->compositor;
struct gl_renderer *gr = get_renderer(compositor);
int i;
GLushort *buffer;
GLushort *index;
int nelems;
static int color_idx = 0;
static const GLfloat color[][4] = {
{ 1.0, 0.0, 0.0, 1.0 },
{ 0.0, 1.0, 0.0, 1.0 },
{ 0.0, 0.0, 1.0, 1.0 },
{ 1.0, 1.0, 1.0, 1.0 },
};
nelems = (count - 1 + count - 2) * 2;
buffer = malloc(sizeof(GLushort) * nelems);
index = buffer;
for (i = 1; i < count; i++) {
*index++ = first;
*index++ = first + i;
}
for (i = 2; i < count; i++) {
*index++ = first + i - 1;
*index++ = first + i;
}
glUseProgram(gr->solid_shader.program);
glUniform4fv(gr->solid_shader.color_uniform, 1,
color[color_idx++ % ARRAY_LENGTH(color)]);
glDrawElements(GL_LINES, nelems, GL_UNSIGNED_SHORT, buffer);
glUseProgram(gr->current_shader->program);
free(buffer);
}
static void
repaint_region(struct weston_view *ev, pixman_region32_t *region,
pixman_region32_t *surf_region)
{
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
GLfloat *v;
unsigned int *vtxcnt;
int i, first, nfans;
/* The final region to be painted is the intersection of
* 'region' and 'surf_region'. However, 'region' is in the global
* coordinates, and 'surf_region' is in the surface-local
* coordinates. texture_region() will iterate over all pairs of
* rectangles from both regions, compute the intersection
* polygon for each pair, and store it as a triangle fan if
* it has a non-zero area (at least 3 vertices, actually).
*/
nfans = texture_region(ev, region, surf_region);
v = gr->vertices.data;
vtxcnt = gr->vtxcnt.data;
/* position: */
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
glEnableVertexAttribArray(0);
/* texcoord: */
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
glEnableVertexAttribArray(1);
for (i = 0, first = 0; i < nfans; i++) {
glDrawArrays(GL_TRIANGLE_FAN, first, vtxcnt[i]);
if (gr->fan_debug)
triangle_fan_debug(ev, first, vtxcnt[i]);
first += vtxcnt[i];
}
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
gr->vertices.size = 0;
gr->vtxcnt.size = 0;
}
static int
use_output(struct weston_output *output)
{
static int errored;
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
EGLBoolean ret;
ret = eglMakeCurrent(gr->egl_display, go->egl_surface,
go->egl_surface, gr->egl_context);
if (ret == EGL_FALSE) {
if (errored)
return -1;
errored = 1;
weston_log("Failed to make EGL context current.\n");
gl_renderer_print_egl_error_state();
return -1;
}
return 0;
}
static int
shader_init(struct gl_shader *shader, struct gl_renderer *gr,
const char *vertex_source, const char *fragment_source);
static void
use_shader(struct gl_renderer *gr, struct gl_shader *shader)
{
if (!shader->program) {
int ret;
ret = shader_init(shader, gr,
shader->vertex_source,
shader->fragment_source);
if (ret < 0)
weston_log("warning: failed to compile shader\n");
}
if (gr->current_shader == shader)
return;
glUseProgram(shader->program);
gr->current_shader = shader;
}
static void
shader_uniforms(struct gl_shader *shader,
struct weston_view *view,
struct weston_output *output)
{
int i;
struct gl_surface_state *gs = get_surface_state(view->surface);
struct gl_output_state *go = get_output_state(output);
glUniformMatrix4fv(shader->proj_uniform,
1, GL_FALSE, go->output_matrix.d);
glUniform4fv(shader->color_uniform, 1, gs->color);
glUniform1f(shader->alpha_uniform, view->alpha);
for (i = 0; i < gs->num_textures; i++)
glUniform1i(shader->tex_uniforms[i], i);
}
static int
ensure_surface_buffer_is_ready(struct gl_renderer *gr,
struct gl_surface_state *gs)
{
EGLint attribs[] = {
EGL_SYNC_NATIVE_FENCE_FD_ANDROID,
-1,
EGL_NONE
};
struct weston_surface *surface = gs->surface;
struct weston_buffer *buffer = gs->buffer_ref.buffer;
EGLSyncKHR sync;
EGLint wait_ret;
EGLint destroy_ret;
if (!buffer)
return 0;
if (surface->acquire_fence_fd < 0)
return 0;
/* We should only get a fence if we support EGLSyncKHR, since
* we don't advertise the explicit sync protocol otherwise. */
assert(gr->has_native_fence_sync);
/* We should only get a fence for non-SHM buffers, since surface
* commit would have failed otherwise. */
assert(wl_shm_buffer_get(buffer->resource) == NULL);
attribs[1] = dup(surface->acquire_fence_fd);
if (attribs[1] == -1) {
linux_explicit_synchronization_send_server_error(
gs->surface->synchronization_resource,
"Failed to dup acquire fence");
return -1;
}
sync = gr->create_sync(gr->egl_display,
EGL_SYNC_NATIVE_FENCE_ANDROID,
attribs);
if (sync == EGL_NO_SYNC_KHR) {
linux_explicit_synchronization_send_server_error(
gs->surface->synchronization_resource,
"Failed to create EGLSyncKHR object");
close(attribs[1]);
return -1;
}
wait_ret = gr->wait_sync(gr->egl_display, sync, 0);
if (wait_ret == EGL_FALSE) {
linux_explicit_synchronization_send_server_error(
gs->surface->synchronization_resource,
"Failed to wait on EGLSyncKHR object");
/* Continue to try to destroy the sync object. */
}
destroy_ret = gr->destroy_sync(gr->egl_display, sync);
if (destroy_ret == EGL_FALSE) {
linux_explicit_synchronization_send_server_error(
gs->surface->synchronization_resource,
"Failed to destroy on EGLSyncKHR object");
}
return (wait_ret == EGL_TRUE && destroy_ret == EGL_TRUE) ? 0 : -1;
}
/* Checks if a view needs to be censored on an output
* Checks for 2 types of censor requirements
* - recording_censor: Censor protected view when a
* protected view is captured.
* - unprotected_censor: Censor regions of protected views
* when displayed on an output which has lower protection capability.
* Returns the originally stored gl_shader if content censoring is required,
* NULL otherwise.
*/
static struct gl_shader *
setup_censor_overrides(struct weston_output *output,
struct weston_view *ev)
{
struct gl_shader *replaced_shader = NULL;
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(ev->surface);
bool recording_censor =
(output->disable_planes > 0) &&
(ev->surface->desired_protection > WESTON_HDCP_DISABLE);
bool unprotected_censor =
(ev->surface->desired_protection > output->current_protection);
/* When not in enforced mode, the client is notified of the protection */
/* change, so content censoring is not required */
if (ev->surface->protection_mode !=
WESTON_SURFACE_PROTECTION_MODE_ENFORCED)
return NULL;
if (recording_censor || unprotected_censor) {
replaced_shader = gs->shader;
gs->color[0] = 0.40;
gs->color[1] = 0.0;
gs->color[2] = 0.0;
gs->color[3] = 1.0;
gs->shader = &gr->solid_shader;
}
return replaced_shader;
}
static void
draw_view(struct weston_view *ev, struct weston_output *output,
pixman_region32_t *damage) /* in global coordinates */
{
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(ev->surface);
/* repaint bounding region in global coordinates: */
pixman_region32_t repaint;
/* opaque region in surface coordinates: */
pixman_region32_t surface_opaque;
/* non-opaque region in surface coordinates: */
pixman_region32_t surface_blend;
GLint filter;
int i;
struct gl_shader *replaced_shader = NULL;
/* In case of a runtime switch of renderers, we may not have received
* an attach for this surface since the switch. In that case we don't
* have a valid buffer or a proper shader set up so skip rendering. */
if (!gs->shader)
return;
pixman_region32_init(&repaint);
pixman_region32_intersect(&repaint,
&ev->transform.boundingbox, damage);
pixman_region32_subtract(&repaint, &repaint, &ev->clip);
if (!pixman_region32_not_empty(&repaint))
goto out;
if (ensure_surface_buffer_is_ready(gr, gs) < 0)
goto out;
replaced_shader = setup_censor_overrides(output, ev);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
if (gr->fan_debug) {
use_shader(gr, &gr->solid_shader);
shader_uniforms(&gr->solid_shader, ev, output);
}
use_shader(gr, gs->shader);
shader_uniforms(gs->shader, ev, output);
if (ev->transform.enabled || output->zoom.active ||
output->current_scale != ev->surface->buffer_viewport.buffer.scale)
filter = GL_LINEAR;
else
filter = GL_NEAREST;
for (i = 0; i < gs->num_textures; i++) {
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(gs->target, GL_TEXTURE_MAG_FILTER, filter);
}
/* blended region is whole surface minus opaque region: */
pixman_region32_init_rect(&surface_blend, 0, 0,
ev->surface->width, ev->surface->height);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_blend, &surface_blend,
&ev->geometry.scissor);
pixman_region32_subtract(&surface_blend, &surface_blend,
&ev->surface->opaque);
/* XXX: Should we be using ev->transform.opaque here? */
pixman_region32_init(&surface_opaque);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_opaque,
&ev->surface->opaque,
&ev->geometry.scissor);
else
pixman_region32_copy(&surface_opaque, &ev->surface->opaque);
if (pixman_region32_not_empty(&surface_opaque)) {
if (gs->shader == &gr->texture_shader_rgba) {
/* Special case for RGBA textures with possibly
* bad data in alpha channel: use the shader
* that forces texture alpha = 1.0.
* Xwayland surfaces need this.
*/
use_shader(gr, &gr->texture_shader_rgbx);
shader_uniforms(&gr->texture_shader_rgbx, ev, output);
}
if (ev->alpha < 1.0)
glEnable(GL_BLEND);
else
glDisable(GL_BLEND);
repaint_region(ev, &repaint, &surface_opaque);
gs->used_in_output_repaint = true;
}
if (pixman_region32_not_empty(&surface_blend)) {
use_shader(gr, gs->shader);
glEnable(GL_BLEND);
repaint_region(ev, &repaint, &surface_blend);
gs->used_in_output_repaint = true;
}
pixman_region32_fini(&surface_blend);
pixman_region32_fini(&surface_opaque);
out:
pixman_region32_fini(&repaint);
if (replaced_shader)
gs->shader = replaced_shader;
}
static void
repaint_views(struct weston_output *output, pixman_region32_t *damage)
{
struct weston_compositor *compositor = output->compositor;
struct weston_view *view;
wl_list_for_each_reverse(view, &compositor->view_list, link)
if (view->plane == &compositor->primary_plane)
draw_view(view, output, damage);
}
static int
gl_renderer_create_fence_fd(struct weston_output *output);
/* Updates the release fences of surfaces that were used in the current output
* repaint. Should only be used from gl_renderer_repaint_output, so that the
* information in gl_surface_state.used_in_output_repaint is accurate.
*/
static void
update_buffer_release_fences(struct weston_compositor *compositor,
struct weston_output *output)
{
struct weston_view *view;
wl_list_for_each_reverse(view, &compositor->view_list, link) {
struct gl_surface_state *gs;
struct weston_buffer_release *buffer_release;
int fence_fd;
if (view->plane != &compositor->primary_plane)
continue;
gs = get_surface_state(view->surface);
buffer_release = gs->buffer_release_ref.buffer_release;
if (!gs->used_in_output_repaint || !buffer_release)
continue;
fence_fd = gl_renderer_create_fence_fd(output);
/* If we have a buffer_release then it means we support fences,
* and we should be able to create the release fence. If we
* can't, something has gone horribly wrong, so disconnect the
* client.
*/
if (fence_fd == -1) {
linux_explicit_synchronization_send_server_error(
buffer_release->resource,
"Failed to create release fence");
fd_clear(&buffer_release->fence_fd);
continue;
}
/* At the moment it is safe to just replace the fence_fd,
* discarding the previous one:
*
* 1. If the previous fence fd represents a sync fence from
* a previous repaint cycle, that fence fd is now not
* sufficient to provide the release guarantee and should
* be replaced.
*
* 2. If the fence fd represents a sync fence from another
* output in the same repaint cycle, it's fine to replace
* it since we are rendering to all outputs using the same
* EGL context, so a fence issued for a later output rendering
* is guaranteed to signal after fences for previous output
* renderings.
*
* Note that the above is only valid if the buffer_release
* fences only originate from the GL renderer, which guarantees
* a total order of operations and fences. If we introduce
* fences from other sources (e.g., plane out-fences), we will
* need to merge fences instead.
*/
fd_update(&buffer_release->fence_fd, fence_fd);
}
}
static void
draw_output_border_texture(struct gl_output_state *go,
enum gl_renderer_border_side side,
int32_t x, int32_t y,
int32_t width, int32_t height)
{
struct gl_border_image *img = &go->borders[side];
static GLushort indices [] = { 0, 1, 3, 3, 1, 2 };
if (!img->data) {
if (img->tex) {
glDeleteTextures(1, &img->tex);
img->tex = 0;
}
return;
}
if (!img->tex) {
glGenTextures(1, &img->tex);
glBindTexture(GL_TEXTURE_2D, img->tex);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER, GL_NEAREST);
} else {
glBindTexture(GL_TEXTURE_2D, img->tex);
}
if (go->border_status & (1 << side)) {
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
img->tex_width, img->height, 0,
GL_BGRA_EXT, GL_UNSIGNED_BYTE, img->data);
}
GLfloat texcoord[] = {
0.0f, 0.0f,
(GLfloat)img->width / (GLfloat)img->tex_width, 0.0f,
(GLfloat)img->width / (GLfloat)img->tex_width, 1.0f,
0.0f, 1.0f,
};
GLfloat verts[] = {
x, y,
x + width, y,
x + width, y + height,
x, y + height
};
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, verts);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, texcoord);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
}
static int
output_has_borders(struct weston_output *output)
{
struct gl_output_state *go = get_output_state(output);
return go->borders[GL_RENDERER_BORDER_TOP].data ||
go->borders[GL_RENDERER_BORDER_RIGHT].data ||
go->borders[GL_RENDERER_BORDER_BOTTOM].data ||
go->borders[GL_RENDERER_BORDER_LEFT].data;
}
static void
draw_output_borders(struct weston_output *output,
enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_shader *shader = &gr->texture_shader_rgba;
struct gl_border_image *top, *bottom, *left, *right;
struct weston_matrix matrix;
int full_width, full_height;
if (border_status == BORDER_STATUS_CLEAN)
return; /* Clean. Nothing to do. */
top = &go->borders[GL_RENDERER_BORDER_TOP];
bottom = &go->borders[GL_RENDERER_BORDER_BOTTOM];
left = &go->borders[GL_RENDERER_BORDER_LEFT];
right = &go->borders[GL_RENDERER_BORDER_RIGHT];
full_width = output->current_mode->width + left->width + right->width;
full_height = output->current_mode->height + top->height + bottom->height;
glDisable(GL_BLEND);
use_shader(gr, shader);
glViewport(0, 0, full_width, full_height);
weston_matrix_init(&matrix);
weston_matrix_translate(&matrix, -full_width/2.0, -full_height/2.0, 0);
weston_matrix_scale(&matrix, 2.0/full_width, -2.0/full_height, 1);
glUniformMatrix4fv(shader->proj_uniform, 1, GL_FALSE, matrix.d);
glUniform1i(shader->tex_uniforms[0], 0);
glUniform1f(shader->alpha_uniform, 1);
glActiveTexture(GL_TEXTURE0);
if (border_status & BORDER_TOP_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_TOP,
0, 0,
full_width, top->height);
if (border_status & BORDER_LEFT_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_LEFT,
0, top->height,
left->width, output->current_mode->height);
if (border_status & BORDER_RIGHT_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_RIGHT,
full_width - right->width, top->height,
right->width, output->current_mode->height);
if (border_status & BORDER_BOTTOM_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_BOTTOM,
0, full_height - bottom->height,
full_width, bottom->height);
}
static void
output_get_border_damage(struct weston_output *output,
enum gl_border_status border_status,
pixman_region32_t *damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_border_image *top, *bottom, *left, *right;
int full_width, full_height;
if (border_status == BORDER_STATUS_CLEAN)
return; /* Clean. Nothing to do. */
top = &go->borders[GL_RENDERER_BORDER_TOP];
bottom = &go->borders[GL_RENDERER_BORDER_BOTTOM];
left = &go->borders[GL_RENDERER_BORDER_LEFT];
right = &go->borders[GL_RENDERER_BORDER_RIGHT];
full_width = output->current_mode->width + left->width + right->width;
full_height = output->current_mode->height + top->height + bottom->height;
if (border_status & BORDER_TOP_DIRTY)
pixman_region32_union_rect(damage, damage,
0, 0,
full_width, top->height);
if (border_status & BORDER_LEFT_DIRTY)
pixman_region32_union_rect(damage, damage,
0, top->height,
left->width, output->current_mode->height);
if (border_status & BORDER_RIGHT_DIRTY)
pixman_region32_union_rect(damage, damage,
full_width - right->width, top->height,
right->width, output->current_mode->height);
if (border_status & BORDER_BOTTOM_DIRTY)
pixman_region32_union_rect(damage, damage,
0, full_height - bottom->height,
full_width, bottom->height);
}
static void
output_get_damage(struct weston_output *output,
pixman_region32_t *buffer_damage, uint32_t *border_damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
EGLint buffer_age = 0;
EGLBoolean ret;
int i;
if (gr->has_egl_buffer_age) {
ret = eglQuerySurface(gr->egl_display, go->egl_surface,
EGL_BUFFER_AGE_EXT, &buffer_age);
if (ret == EGL_FALSE) {
weston_log("buffer age query failed.\n");
gl_renderer_print_egl_error_state();
}
}
if (buffer_age == 0 || buffer_age - 1 > BUFFER_DAMAGE_COUNT) {
pixman_region32_copy(buffer_damage, &output->region);
*border_damage = BORDER_ALL_DIRTY;
} else {
for (i = 0; i < buffer_age - 1; i++)
*border_damage |= go->border_damage[(go->buffer_damage_index + i) % BUFFER_DAMAGE_COUNT];
if (*border_damage & BORDER_SIZE_CHANGED) {
/* If we've had a resize, we have to do a full
* repaint. */
*border_damage |= BORDER_ALL_DIRTY;
pixman_region32_copy(buffer_damage, &output->region);
} else {
for (i = 0; i < buffer_age - 1; i++)
pixman_region32_union(buffer_damage,
buffer_damage,
&go->buffer_damage[(go->buffer_damage_index + i) % BUFFER_DAMAGE_COUNT]);
}
}
}
static void
output_rotate_damage(struct weston_output *output,
pixman_region32_t *output_damage,
enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
if (!gr->has_egl_buffer_age)
return;
go->buffer_damage_index += BUFFER_DAMAGE_COUNT - 1;
go->buffer_damage_index %= BUFFER_DAMAGE_COUNT;
pixman_region32_copy(&go->buffer_damage[go->buffer_damage_index], output_damage);
go->border_damage[go->buffer_damage_index] = border_status;
}
/**
* Given a region in Weston's (top-left-origin) global co-ordinate space,
* translate it to the co-ordinate space used by GL for our output
* rendering. This requires shifting it into output co-ordinate space:
* translating for output offset within the global co-ordinate space,
* multiplying by output scale to get buffer rather than logical size.
*
* Finally, if borders are drawn around the output, we translate the area
* to account for the border region around the outside, and add any
* damage if the borders have been redrawn.
*
* @param output The output whose co-ordinate space we are after
* @param global_region The affected region in global co-ordinate space
* @param[out] rects Y-inverted quads in {x,y,w,h} order; caller must free
* @param[out] nrects Number of quads (4x number of co-ordinates)
*/
static void
pixman_region_to_egl_y_invert(struct weston_output *output,
struct pixman_region32 *global_region,
EGLint **rects,
EGLint *nrects)
{
struct gl_output_state *go = get_output_state(output);
pixman_region32_t transformed;
struct pixman_box32 *box;
int buffer_height;
EGLint *d;
int i;
/* Translate from global to output co-ordinate space. */
pixman_region32_init(&transformed);
pixman_region32_copy(&transformed, global_region);
pixman_region32_translate(&transformed, -output->x, -output->y);
weston_transformed_region(output->width, output->height,
output->transform,
output->current_scale,
&transformed, &transformed);
/* If we have borders drawn around the output, shift our output damage
* to account for borders being drawn around the outside, adding any
* damage resulting from borders being redrawn. */
if (output_has_borders(output)) {
pixman_region32_translate(&transformed,
go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_TOP].height);
output_get_border_damage(output, go->border_status,
&transformed);
}
/* Convert from a Pixman region into {x,y,w,h} quads, flipping in the
* Y axis to account for GL's lower-left-origin co-ordinate space. */
box = pixman_region32_rectangles(&transformed, nrects);
*rects = malloc(*nrects * 4 * sizeof(EGLint));
buffer_height = go->borders[GL_RENDERER_BORDER_TOP].height +
output->current_mode->height +
go->borders[GL_RENDERER_BORDER_BOTTOM].height;
d = *rects;
for (i = 0; i < *nrects; ++i) {
*d++ = box[i].x1;
*d++ = buffer_height - box[i].y2;
*d++ = box[i].x2 - box[i].x1;
*d++ = box[i].y2 - box[i].y1;
}
pixman_region32_fini(&transformed);
}
/* NOTE: We now allow falling back to ARGB gl visuals when XRGB is
* unavailable, so we're assuming the background has no transparency
* and that everything with a blend, like drop shadows, will have something
* opaque (like the background) drawn underneath it.
*
* Depending on the underlying hardware, violating that assumption could
* result in seeing through to another display plane.
*/
static void
gl_renderer_repaint_output(struct weston_output *output,
pixman_region32_t *output_damage)
{
struct gl_output_state *go = get_output_state(output);
struct weston_compositor *compositor = output->compositor;
struct gl_renderer *gr = get_renderer(compositor);
EGLBoolean ret;
static int errored;
/* areas we've damaged since we last used this buffer */
pixman_region32_t previous_damage;
/* total area we need to repaint this time */
pixman_region32_t total_damage;
enum gl_border_status border_status = BORDER_STATUS_CLEAN;
struct weston_view *view;
if (use_output(output) < 0)
return;
/* Clear the used_in_output_repaint flag, so that we can properly track
* which surfaces were used in this output repaint. */
wl_list_for_each_reverse(view, &compositor->view_list, link) {
if (view->plane == &compositor->primary_plane) {
struct gl_surface_state *gs =
get_surface_state(view->surface);
gs->used_in_output_repaint = false;
}
}
if (go->begin_render_sync != EGL_NO_SYNC_KHR)
gr->destroy_sync(gr->egl_display, go->begin_render_sync);
if (go->end_render_sync != EGL_NO_SYNC_KHR)
gr->destroy_sync(gr->egl_display, go->end_render_sync);
go->begin_render_sync = create_render_sync(gr);
/* Calculate the viewport */
glViewport(go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_BOTTOM].height,
output->current_mode->width,
output->current_mode->height);
/* Calculate the global GL matrix */
go->output_matrix = output->matrix;
weston_matrix_translate(&go->output_matrix,
-(output->current_mode->width / 2.0),
-(output->current_mode->height / 2.0), 0);
weston_matrix_scale(&go->output_matrix,
2.0 / output->current_mode->width,
-2.0 / output->current_mode->height, 1);
/* In fan debug mode, redraw everything to make sure that we clear any
* fans left over from previous draws on this buffer.
* This precludes the use of EGL_EXT_swap_buffers_with_damage and
* EGL_KHR_partial_update, since we damage the whole area. */
if (gr->fan_debug) {
pixman_region32_t undamaged;
pixman_region32_init(&undamaged);
pixman_region32_subtract(&undamaged, &output->region,
output_damage);
gr->fan_debug = false;
repaint_views(output, &undamaged);
gr->fan_debug = true;
pixman_region32_fini(&undamaged);
}
/* previous_damage covers regions damaged in previous paints since we
* last used this buffer */
pixman_region32_init(&previous_damage);
pixman_region32_init(&total_damage); /* total area to redraw */
/* Update previous_damage using buffer_age (if available), and store
* current damaged region for future use. */
output_get_damage(output, &previous_damage, &border_status);
output_rotate_damage(output, output_damage, go->border_status);
/* Redraw both areas which have changed since we last used this buffer,
* as well as the areas we now want to repaint, to make sure the
* buffer is up to date. */
pixman_region32_union(&total_damage, &previous_damage, output_damage);
border_status |= go->border_status;
if (gr->has_egl_partial_update && !gr->fan_debug) {
int n_egl_rects;
EGLint *egl_rects;
/* For partial_update, we need to pass the region which has
* changed since we last rendered into this specific buffer;
* this is total_damage. */
pixman_region_to_egl_y_invert(output, &total_damage,
&egl_rects, &n_egl_rects);
gr->set_damage_region(gr->egl_display, go->egl_surface,
egl_rects, n_egl_rects);
free(egl_rects);
}
repaint_views(output, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&previous_damage);
draw_output_borders(output, border_status);
pixman_region32_copy(&output->previous_damage, output_damage);
wl_signal_emit(&output->frame_signal, output);
go->end_render_sync = create_render_sync(gr);
if (gr->swap_buffers_with_damage && !gr->fan_debug) {
int n_egl_rects;
EGLint *egl_rects;
/* For swap_buffers_with_damage, we need to pass the region
* which has changed since the previous SwapBuffers on this
* surface - this is output_damage. */
pixman_region_to_egl_y_invert(output, output_damage,
&egl_rects, &n_egl_rects);
ret = gr->swap_buffers_with_damage(gr->egl_display,
go->egl_surface,
egl_rects, n_egl_rects);
free(egl_rects);
} else {
ret = eglSwapBuffers(gr->egl_display, go->egl_surface);
}
if (ret == EGL_FALSE && !errored) {
errored = 1;
weston_log("Failed in eglSwapBuffers.\n");
gl_renderer_print_egl_error_state();
}
go->border_status = BORDER_STATUS_CLEAN;
/* We have to submit the render sync objects after swap buffers, since
* the objects get assigned a valid sync file fd only after a gl flush.
*/
timeline_submit_render_sync(gr, compositor, output,
go->begin_render_sync,
TIMELINE_RENDER_POINT_TYPE_BEGIN);
timeline_submit_render_sync(gr, compositor, output, go->end_render_sync,
TIMELINE_RENDER_POINT_TYPE_END);
update_buffer_release_fences(compositor, output);
}
static int
gl_renderer_read_pixels(struct weston_output *output,
pixman_format_code_t format, void *pixels,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height)
{
GLenum gl_format;
struct gl_output_state *go = get_output_state(output);
x += go->borders[GL_RENDERER_BORDER_LEFT].width;
y += go->borders[GL_RENDERER_BORDER_BOTTOM].height;
switch (format) {
case PIXMAN_a8r8g8b8:
gl_format = GL_BGRA_EXT;
break;
case PIXMAN_a8b8g8r8:
gl_format = GL_RGBA;
break;
default:
return -1;
}
if (use_output(output) < 0)
return -1;
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(x, y, width, height, gl_format,
GL_UNSIGNED_BYTE, pixels);
return 0;
}
static GLenum gl_format_from_internal(GLenum internal_format)
{
switch (internal_format) {
case GL_R8_EXT:
return GL_RED_EXT;
case GL_RG8_EXT:
return GL_RG_EXT;
default:
return internal_format;
}
}
static void
gl_renderer_flush_damage(struct weston_surface *surface)
{
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
struct weston_buffer *buffer = gs->buffer_ref.buffer;
struct weston_view *view;
bool texture_used;
pixman_box32_t *rectangles;
uint8_t *data;
int i, j, n;
pixman_region32_union(&gs->texture_damage,
&gs->texture_damage, &surface->damage);
if (!buffer)
return;
/* Avoid upload, if the texture won't be used this time.
* We still accumulate the damage in texture_damage, and
* hold the reference to the buffer, in case the surface
* migrates back to the primary plane.
*/
texture_used = false;
wl_list_for_each(view, &surface->views, surface_link) {
if (view->plane == &surface->compositor->primary_plane) {
texture_used = true;
break;
}
}
if (!texture_used)
return;
if (!pixman_region32_not_empty(&gs->texture_damage) &&
!gs->needs_full_upload)
goto done;
data = wl_shm_buffer_get_data(buffer->shm_buffer);
if (!gr->has_unpack_subimage) {
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glTexImage2D(GL_TEXTURE_2D, 0,
gs->gl_format[j],
gs->pitch / gs->hsub[j],
buffer->height / gs->vsub[j],
0,
gl_format_from_internal(gs->gl_format[j]),
gs->gl_pixel_type,
data + gs->offset[j]);
}
wl_shm_buffer_end_access(buffer->shm_buffer);
goto done;
}
if (gs->needs_full_upload) {
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
gs->pitch / gs->hsub[j]);
glTexImage2D(GL_TEXTURE_2D, 0,
gs->gl_format[j],
gs->pitch / gs->hsub[j],
buffer->height / gs->vsub[j],
0,
gl_format_from_internal(gs->gl_format[j]),
gs->gl_pixel_type,
data + gs->offset[j]);
}
wl_shm_buffer_end_access(buffer->shm_buffer);
goto done;
}
rectangles = pixman_region32_rectangles(&gs->texture_damage, &n);
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (i = 0; i < n; i++) {
pixman_box32_t r;
r = weston_surface_to_buffer_rect(surface, rectangles[i]);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
gs->pitch / gs->hsub[j]);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT,
r.x1 / gs->hsub[j]);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT,
r.y1 / gs->hsub[j]);
glTexSubImage2D(GL_TEXTURE_2D, 0,
r.x1 / gs->hsub[j],
r.y1 / gs->vsub[j],
(r.x2 - r.x1) / gs->hsub[j],
(r.y2 - r.y1) / gs->vsub[j],
gl_format_from_internal(gs->gl_format[j]),
gs->gl_pixel_type,
data + gs->offset[j]);
}
}
wl_shm_buffer_end_access(buffer->shm_buffer);
done:
pixman_region32_fini(&gs->texture_damage);
pixman_region32_init(&gs->texture_damage);
gs->needs_full_upload = false;
weston_buffer_reference(&gs->buffer_ref, NULL);
weston_buffer_release_reference(&gs->buffer_release_ref, NULL);
}
static void
ensure_textures(struct gl_surface_state *gs, int num_textures)
{
int i;
if (num_textures <= gs->num_textures)
return;
for (i = gs->num_textures; i < num_textures; i++) {
glGenTextures(1, &gs->textures[i]);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(gs->target,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
gs->num_textures = num_textures;
glBindTexture(gs->target, 0);
}
static void
gl_renderer_attach_shm(struct weston_surface *es, struct weston_buffer *buffer,
struct wl_shm_buffer *shm_buffer)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
GLenum gl_format[3] = {0, 0, 0};
GLenum gl_pixel_type;
int pitch;
int num_planes;
buffer->shm_buffer = shm_buffer;
buffer->width = wl_shm_buffer_get_width(shm_buffer);
buffer->height = wl_shm_buffer_get_height(shm_buffer);
num_planes = 1;
gs->offset[0] = 0;
gs->hsub[0] = 1;
gs->vsub[0] = 1;
switch (wl_shm_buffer_get_format(shm_buffer)) {
case WL_SHM_FORMAT_XRGB8888:
gs->shader = &gr->texture_shader_rgbx;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = GL_BGRA_EXT;
gl_pixel_type = GL_UNSIGNED_BYTE;
es->is_opaque = true;
break;
case WL_SHM_FORMAT_ARGB8888:
gs->shader = &gr->texture_shader_rgba;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = GL_BGRA_EXT;
gl_pixel_type = GL_UNSIGNED_BYTE;
es->is_opaque = false;
break;
case WL_SHM_FORMAT_RGB565:
gs->shader = &gr->texture_shader_rgbx;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 2;
gl_format[0] = GL_RGB;
gl_pixel_type = GL_UNSIGNED_SHORT_5_6_5;
es->is_opaque = true;
break;
case WL_SHM_FORMAT_YUV420:
gs->shader = &gr->texture_shader_y_u_v;
pitch = wl_shm_buffer_get_stride(shm_buffer);
gl_pixel_type = GL_UNSIGNED_BYTE;
num_planes = 3;
gs->offset[1] = gs->offset[0] + (pitch / gs->hsub[0]) *
(buffer->height / gs->vsub[0]);
gs->hsub[1] = 2;
gs->vsub[1] = 2;
gs->offset[2] = gs->offset[1] + (pitch / gs->hsub[1]) *
(buffer->height / gs->vsub[1]);
gs->hsub[2] = 2;
gs->vsub[2] = 2;
if (gr->has_gl_texture_rg) {
gl_format[0] = GL_R8_EXT;
gl_format[1] = GL_R8_EXT;
gl_format[2] = GL_R8_EXT;
} else {
gl_format[0] = GL_LUMINANCE;
gl_format[1] = GL_LUMINANCE;
gl_format[2] = GL_LUMINANCE;
}
es->is_opaque = true;
break;
case WL_SHM_FORMAT_NV12:
pitch = wl_shm_buffer_get_stride(shm_buffer);
gl_pixel_type = GL_UNSIGNED_BYTE;
num_planes = 2;
gs->offset[1] = gs->offset[0] + (pitch / gs->hsub[0]) *
(buffer->height / gs->vsub[0]);
gs->hsub[1] = 2;
gs->vsub[1] = 2;
if (gr->has_gl_texture_rg) {
gs->shader = &gr->texture_shader_y_uv;
gl_format[0] = GL_R8_EXT;
gl_format[1] = GL_RG8_EXT;
} else {
gs->shader = &gr->texture_shader_y_xuxv;
gl_format[0] = GL_LUMINANCE;
gl_format[1] = GL_LUMINANCE_ALPHA;
}
es->is_opaque = true;
break;
case WL_SHM_FORMAT_YUYV:
gs->shader = &gr->texture_shader_y_xuxv;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 2;
gl_pixel_type = GL_UNSIGNED_BYTE;
num_planes = 2;
gs->offset[1] = 0;
gs->hsub[1] = 2;
gs->vsub[1] = 1;
if (gr->has_gl_texture_rg)
gl_format[0] = GL_RG8_EXT;
else
gl_format[0] = GL_LUMINANCE_ALPHA;
gl_format[1] = GL_BGRA_EXT;
es->is_opaque = true;
break;
default:
weston_log("warning: unknown shm buffer format: %08x\n",
wl_shm_buffer_get_format(shm_buffer));
return;
}
/* Only allocate a texture if it doesn't match existing one.
* If a switch from DRM allocated buffer to a SHM buffer is
* happening, we need to allocate a new texture buffer. */
if (pitch != gs->pitch ||
buffer->height != gs->height ||
gl_format[0] != gs->gl_format[0] ||
gl_format[1] != gs->gl_format[1] ||
gl_format[2] != gs->gl_format[2] ||
gl_pixel_type != gs->gl_pixel_type ||
gs->buffer_type != BUFFER_TYPE_SHM) {
gs->pitch = pitch;
gs->height = buffer->height;
gs->target = GL_TEXTURE_2D;
gs->gl_format[0] = gl_format[0];
gs->gl_format[1] = gl_format[1];
gs->gl_format[2] = gl_format[2];
gs->gl_pixel_type = gl_pixel_type;
gs->buffer_type = BUFFER_TYPE_SHM;
gs->needs_full_upload = true;
gs->y_inverted = true;
gs->surface = es;
ensure_textures(gs, num_planes);
}
}
static void
gl_renderer_attach_egl(struct weston_surface *es, struct weston_buffer *buffer,
uint32_t format)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
EGLint attribs[3];
int i, num_planes;
buffer->legacy_buffer = (struct wl_buffer *)buffer->resource;
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_WIDTH, &buffer->width);
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_HEIGHT, &buffer->height);
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_WAYLAND_Y_INVERTED_WL, &buffer->y_inverted);
for (i = 0; i < gs->num_images; i++) {
egl_image_unref(gs->images[i]);
gs->images[i] = NULL;
}
gs->num_images = 0;
gs->target = GL_TEXTURE_2D;
es->is_opaque = false;
switch (format) {
case EGL_TEXTURE_RGB:
es->is_opaque = true;
/* fallthrough */
case EGL_TEXTURE_RGBA:
default:
num_planes = 1;
gs->shader = &gr->texture_shader_rgba;
break;
case EGL_TEXTURE_EXTERNAL_WL:
num_planes = 1;
gs->target = GL_TEXTURE_EXTERNAL_OES;
gs->shader = &gr->texture_shader_egl_external;
break;
case EGL_TEXTURE_Y_UV_WL:
num_planes = 2;
gs->shader = &gr->texture_shader_y_uv;
es->is_opaque = true;
break;
case EGL_TEXTURE_Y_U_V_WL:
num_planes = 3;
gs->shader = &gr->texture_shader_y_u_v;
es->is_opaque = true;
break;
case EGL_TEXTURE_Y_XUXV_WL:
num_planes = 2;
gs->shader = &gr->texture_shader_y_xuxv;
es->is_opaque = true;
break;
}
ensure_textures(gs, num_planes);
for (i = 0; i < num_planes; i++) {
attribs[0] = EGL_WAYLAND_PLANE_WL;
attribs[1] = i;
attribs[2] = EGL_NONE;
gs->images[i] = egl_image_create(gr,
EGL_WAYLAND_BUFFER_WL,
buffer->legacy_buffer,
attribs);
if (!gs->images[i]) {
weston_log("failed to create img for plane %d\n", i);
continue;
}
gs->num_images++;
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
gr->image_target_texture_2d(gs->target,
gs->images[i]->image);
}
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;
gs->y_inverted = buffer->y_inverted;
}
static void
gl_renderer_destroy_dmabuf(struct linux_dmabuf_buffer *dmabuf)
{
struct dmabuf_image *image = linux_dmabuf_buffer_get_user_data(dmabuf);
dmabuf_image_destroy(image);
}
static struct egl_image *
import_simple_dmabuf(struct gl_renderer *gr,
struct dmabuf_attributes *attributes)
{
struct egl_image *image;
EGLint attribs[50];
int atti = 0;
bool has_modifier;
/* This requires the Mesa commit in
* Mesa 10.3 (08264e5dad4df448e7718e782ad9077902089a07) or
* Mesa 10.2.7 (55d28925e6109a4afd61f109e845a8a51bd17652).
* Otherwise Mesa closes the fd behind our back and re-importing
* will fail.
* https://bugs.freedesktop.org/show_bug.cgi?id=76188
*/
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;
if (attributes->modifier[0] != DRM_FORMAT_MOD_INVALID) {
if (!gr->has_dmabuf_import_modifiers)
return NULL;
has_modifier = true;
} else {
has_modifier = false;
}
if (attributes->n_planes > 0) {
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;
}
}
if (attributes->n_planes > 1) {
attribs[atti++] = EGL_DMA_BUF_PLANE1_FD_EXT;
attribs[atti++] = attributes->fd[1];
attribs[atti++] = EGL_DMA_BUF_PLANE1_OFFSET_EXT;
attribs[atti++] = attributes->offset[1];
attribs[atti++] = EGL_DMA_BUF_PLANE1_PITCH_EXT;
attribs[atti++] = attributes->stride[1];
if (has_modifier) {
attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT;
attribs[atti++] = attributes->modifier[1] & 0xFFFFFFFF;
attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT;
attribs[atti++] = attributes->modifier[1] >> 32;
}
}
if (attributes->n_planes > 2) {
attribs[atti++] = EGL_DMA_BUF_PLANE2_FD_EXT;
attribs[atti++] = attributes->fd[2];
attribs[atti++] = EGL_DMA_BUF_PLANE2_OFFSET_EXT;
attribs[atti++] = attributes->offset[2];
attribs[atti++] = EGL_DMA_BUF_PLANE2_PITCH_EXT;
attribs[atti++] = attributes->stride[2];
if (has_modifier) {
attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT;
attribs[atti++] = attributes->modifier[2] & 0xFFFFFFFF;
attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT;
attribs[atti++] = attributes->modifier[2] >> 32;
}
}
if (gr->has_dmabuf_import_modifiers) {
if (attributes->n_planes > 3) {
attribs[atti++] = EGL_DMA_BUF_PLANE3_FD_EXT;
attribs[atti++] = attributes->fd[3];
attribs[atti++] = EGL_DMA_BUF_PLANE3_OFFSET_EXT;
attribs[atti++] = attributes->offset[3];
attribs[atti++] = EGL_DMA_BUF_PLANE3_PITCH_EXT;
attribs[atti++] = attributes->stride[3];
attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT;
attribs[atti++] = attributes->modifier[3] & 0xFFFFFFFF;
attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT;
attribs[atti++] = attributes->modifier[3] >> 32;
}
}
attribs[atti++] = EGL_NONE;
image = egl_image_create(gr, EGL_LINUX_DMA_BUF_EXT, NULL,
attribs);
return image;
}
/* The kernel header drm_fourcc.h defines the DRM formats below. We duplicate
* some of the definitions here so that building Weston won't require
* bleeding-edge kernel headers.
*/
#ifndef DRM_FORMAT_R8
#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
#endif
#ifndef DRM_FORMAT_GR88
#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
#endif
struct yuv_format_descriptor yuv_formats[] = {
{
.format = DRM_FORMAT_YUYV,
.input_planes = 1,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_XUXV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_GR88,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 1,
.format = DRM_FORMAT_ARGB8888,
.plane_index = 0
}}
}, {
.format = DRM_FORMAT_NV12,
.input_planes = 2,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_UV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_GR88,
.plane_index = 1
}}
}, {
.format = DRM_FORMAT_YUV420,
.input_planes = 3,
.output_planes = 3,
.texture_type = EGL_TEXTURE_Y_U_V_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 1
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 2
}}
}, {
.format = DRM_FORMAT_YUV444,
.input_planes = 3,
.output_planes = 3,
.texture_type = EGL_TEXTURE_Y_U_V_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 1
}, {
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 2
}}
}
};
static struct egl_image *
import_dmabuf_single_plane(struct gl_renderer *gr,
const struct dmabuf_attributes *attributes,
struct yuv_plane_descriptor *descriptor)
{
struct dmabuf_attributes plane;
struct egl_image *image;
char fmt[4];
plane.width = attributes->width / descriptor->width_divisor;
plane.height = attributes->height / descriptor->height_divisor;
plane.format = descriptor->format;
plane.n_planes = 1;
plane.fd[0] = attributes->fd[descriptor->plane_index];
plane.offset[0] = attributes->offset[descriptor->plane_index];
plane.stride[0] = attributes->stride[descriptor->plane_index];
plane.modifier[0] = attributes->modifier[descriptor->plane_index];
image = import_simple_dmabuf(gr, &plane);
if (!image) {
weston_log("Failed to import plane %d as %.4s\n",
descriptor->plane_index,
dump_format(descriptor->format, fmt));
return NULL;
}
return image;
}
static bool
import_yuv_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
unsigned i;
int j;
int ret;
struct yuv_format_descriptor *format = NULL;
struct dmabuf_attributes *attributes = &image->dmabuf->attributes;
char fmt[4];
for (i = 0; i < ARRAY_LENGTH(yuv_formats); ++i) {
if (yuv_formats[i].format == attributes->format) {
format = &yuv_formats[i];
break;
}
}
if (!format) {
weston_log("Error during import, and no known conversion for format "
"%.4s in the renderer\n",
dump_format(attributes->format, fmt));
return false;
}
if (attributes->n_planes != format->input_planes) {
weston_log("%.4s dmabuf must contain %d plane%s (%d provided)\n",
dump_format(format->format, fmt),
format->input_planes,
(format->input_planes > 1) ? "s" : "",
attributes->n_planes);
return false;
}
for (j = 0; j < format->output_planes; ++j) {
image->images[j] = import_dmabuf_single_plane(gr, attributes,
&format->plane[j]);
if (!image->images[j]) {
while (j) {
ret = egl_image_unref(image->images[--j]);
assert(ret == 0);
}
return false;
}
}
image->num_images = format->output_planes;
switch (format->texture_type) {
case EGL_TEXTURE_Y_XUXV_WL:
image->shader = &gr->texture_shader_y_xuxv;
break;
case EGL_TEXTURE_Y_UV_WL:
image->shader = &gr->texture_shader_y_uv;
break;
case EGL_TEXTURE_Y_U_V_WL:
image->shader = &gr->texture_shader_y_u_v;
break;
default:
assert(false);
}
return true;
}
static GLenum
choose_texture_target(struct dmabuf_attributes *attributes)
{
if (attributes->n_planes > 1)
return GL_TEXTURE_EXTERNAL_OES;
switch (attributes->format & ~DRM_FORMAT_BIG_ENDIAN) {
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
case DRM_FORMAT_AYUV:
return GL_TEXTURE_EXTERNAL_OES;
default:
return GL_TEXTURE_2D;
}
}
static struct dmabuf_image *
import_dmabuf(struct gl_renderer *gr,
struct linux_dmabuf_buffer *dmabuf)
{
struct egl_image *egl_image;
struct dmabuf_image *image;
image = dmabuf_image_create();
image->dmabuf = dmabuf;
egl_image = import_simple_dmabuf(gr, &dmabuf->attributes);
if (egl_image) {
image->num_images = 1;
image->images[0] = egl_image;
image->import_type = IMPORT_TYPE_DIRECT;
image->target = choose_texture_target(&dmabuf->attributes);
switch (image->target) {
case GL_TEXTURE_2D:
image->shader = &gr->texture_shader_rgba;
break;
default:
image->shader = &gr->texture_shader_egl_external;
}
} else {
if (!import_yuv_dmabuf(gr, image)) {
dmabuf_image_destroy(image);
return NULL;
}
image->import_type = IMPORT_TYPE_GL_CONVERSION;
image->target = GL_TEXTURE_2D;
}
return image;
}
static void
gl_renderer_query_dmabuf_formats(struct weston_compositor *wc,
int **formats, int *num_formats)
{
struct gl_renderer *gr = get_renderer(wc);
static const int fallback_formats[] = {
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_YUYV,
DRM_FORMAT_NV12,
DRM_FORMAT_YUV420,
DRM_FORMAT_YUV444,
};
bool fallback = false;
EGLint num;
assert(gr->has_dmabuf_import);
if (!gr->has_dmabuf_import_modifiers ||
!gr->query_dmabuf_formats(gr->egl_display, 0, NULL, &num)) {
num = gr->has_gl_texture_rg ? ARRAY_LENGTH(fallback_formats) : 2;
fallback = true;
}
*formats = calloc(num, sizeof(int));
if (*formats == NULL) {
*num_formats = 0;
return;
}
if (fallback) {
memcpy(*formats, fallback_formats, num * sizeof(int));
*num_formats = num;
return;
}
if (!gr->query_dmabuf_formats(gr->egl_display, num, *formats, &num)) {
*num_formats = 0;
free(*formats);
return;
}
*num_formats = num;
}
static void
gl_renderer_query_dmabuf_modifiers(struct weston_compositor *wc, int format,
uint64_t **modifiers,
int *num_modifiers)
{
struct gl_renderer *gr = get_renderer(wc);
int num;
assert(gr->has_dmabuf_import);
if (!gr->has_dmabuf_import_modifiers ||
!gr->query_dmabuf_modifiers(gr->egl_display, format, 0, NULL,
NULL, &num) ||
num == 0) {
*num_modifiers = 0;
return;
}
*modifiers = calloc(num, sizeof(uint64_t));
if (*modifiers == NULL) {
*num_modifiers = 0;
return;
}
if (!gr->query_dmabuf_modifiers(gr->egl_display, format,
num, *modifiers, NULL, &num)) {
*num_modifiers = 0;
free(*modifiers);
return;
}
*num_modifiers = num;
}
static bool
gl_renderer_import_dmabuf(struct weston_compositor *ec,
struct linux_dmabuf_buffer *dmabuf)
{
struct gl_renderer *gr = get_renderer(ec);
struct dmabuf_image *image;
int i;
assert(gr->has_dmabuf_import);
for (i = 0; i < dmabuf->attributes.n_planes; i++) {
/* return if EGL doesn't support import modifiers */
if (dmabuf->attributes.modifier[i] != DRM_FORMAT_MOD_INVALID)
if (!gr->has_dmabuf_import_modifiers)
return false;
/* return if modifiers passed are unequal */
if (dmabuf->attributes.modifier[i] !=
dmabuf->attributes.modifier[0])
return false;
}
/* reject all flags we do not recognize or handle */
if (dmabuf->attributes.flags & ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT)
return false;
image = import_dmabuf(gr, dmabuf);
if (!image)
return false;
wl_list_insert(&gr->dmabuf_images, &image->link);
linux_dmabuf_buffer_set_user_data(dmabuf, image,
gl_renderer_destroy_dmabuf);
return true;
}
static bool
import_known_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
switch (image->import_type) {
case IMPORT_TYPE_DIRECT:
image->images[0] = import_simple_dmabuf(gr, &image->dmabuf->attributes);
if (!image->images[0])
return false;
image->num_images = 1;
break;
case IMPORT_TYPE_GL_CONVERSION:
if (!import_yuv_dmabuf(gr, image))
return false;
break;
default:
weston_log("Invalid import type for dmabuf\n");
return false;
}
return true;
}
static bool
dmabuf_is_opaque(struct linux_dmabuf_buffer *dmabuf)
{
const struct pixel_format_info *info;
info = pixel_format_get_info(dmabuf->attributes.format &
~DRM_FORMAT_BIG_ENDIAN);
if (!info)
return false;
return pixel_format_is_opaque(info);
}
static void
gl_renderer_attach_dmabuf(struct weston_surface *surface,
struct weston_buffer *buffer,
struct linux_dmabuf_buffer *dmabuf)
{
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
struct dmabuf_image *image;
int i;
int ret;
if (!gr->has_dmabuf_import) {
linux_dmabuf_buffer_send_server_error(dmabuf,
"EGL dmabuf import not supported");
return;
}
buffer->width = dmabuf->attributes.width;
buffer->height = dmabuf->attributes.height;
/*
* GL-renderer uses the OpenGL convention of texture coordinates, where
* the origin is at bottom-left. Because dmabuf buffers have the origin
* at top-left, we must invert the Y_INVERT flag to get the image right.
*/
buffer->y_inverted =
!(dmabuf->attributes.flags & ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT);
for (i = 0; i < gs->num_images; i++)
egl_image_unref(gs->images[i]);
gs->num_images = 0;
/*
* We try to always hold an imported EGLImage from the dmabuf
* to prevent the client from preventing re-imports. But, we also
* need to re-import every time the contents may change because
* GL driver's caching may need flushing.
*
* Here we release the cache reference which has to be final.
*/
image = linux_dmabuf_buffer_get_user_data(dmabuf);
/* The dmabuf_image should have been created during the import */
assert(image != NULL);
for (i = 0; i < image->num_images; ++i) {
ret = egl_image_unref(image->images[i]);
assert(ret == 0);
}
if (!import_known_dmabuf(gr, image)) {
linux_dmabuf_buffer_send_server_error(dmabuf, "EGL dmabuf import failed");
return;
}
gs->num_images = image->num_images;
for (i = 0; i < gs->num_images; ++i)
gs->images[i] = egl_image_ref(image->images[i]);
gs->target = image->target;
ensure_textures(gs, gs->num_images);
for (i = 0; i < gs->num_images; ++i) {
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
gr->image_target_texture_2d(gs->target, gs->images[i]->image);
}
gs->shader = image->shader;
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;
gs->y_inverted = buffer->y_inverted;
surface->is_opaque = dmabuf_is_opaque(dmabuf);
}
static void
gl_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
struct wl_shm_buffer *shm_buffer;
struct linux_dmabuf_buffer *dmabuf;
EGLint format;
int i;
weston_buffer_reference(&gs->buffer_ref, buffer);
weston_buffer_release_reference(&gs->buffer_release_ref,
es->buffer_release_ref.buffer_release);
if (!buffer) {
for (i = 0; i < gs->num_images; i++) {
egl_image_unref(gs->images[i]);
gs->images[i] = NULL;
}
gs->num_images = 0;
glDeleteTextures(gs->num_textures, gs->textures);
gs->num_textures = 0;
gs->buffer_type = BUFFER_TYPE_NULL;
gs->y_inverted = true;
es->is_opaque = false;
return;
}
shm_buffer = wl_shm_buffer_get(buffer->resource);
if (shm_buffer)
gl_renderer_attach_shm(es, buffer, shm_buffer);
else if (gr->has_bind_display &&
gr->query_buffer(gr->egl_display, (void *)buffer->resource,
EGL_TEXTURE_FORMAT, &format))
gl_renderer_attach_egl(es, buffer, format);
else if ((dmabuf = linux_dmabuf_buffer_get(buffer->resource)))
gl_renderer_attach_dmabuf(es, buffer, dmabuf);
else {
weston_log("unhandled buffer type!\n");
if (gr->has_bind_display) {
weston_log("eglQueryWaylandBufferWL failed\n");
gl_renderer_print_egl_error_state();
}
weston_buffer_reference(&gs->buffer_ref, NULL);
weston_buffer_release_reference(&gs->buffer_release_ref, NULL);
gs->buffer_type = BUFFER_TYPE_NULL;
gs->y_inverted = true;
es->is_opaque = false;
weston_buffer_send_server_error(buffer,
"disconnecting due to unhandled buffer type");
}
}
static void
gl_renderer_surface_set_color(struct weston_surface *surface,
float red, float green, float blue, float alpha)
{
struct gl_surface_state *gs = get_surface_state(surface);
struct gl_renderer *gr = get_renderer(surface->compositor);
gs->color[0] = red;
gs->color[1] = green;
gs->color[2] = blue;
gs->color[3] = alpha;
gs->buffer_type = BUFFER_TYPE_SOLID;
gs->pitch = 1;
gs->height = 1;
gs->shader = &gr->solid_shader;
}
static void
gl_renderer_surface_get_content_size(struct weston_surface *surface,
int *width, int *height)
{
struct gl_surface_state *gs = get_surface_state(surface);
if (gs->buffer_type == BUFFER_TYPE_NULL) {
*width = 0;
*height = 0;
} else {
*width = gs->pitch;
*height = gs->height;
}
}
static uint32_t
pack_color(pixman_format_code_t format, float *c)
{
uint8_t r = round(c[0] * 255.0f);
uint8_t g = round(c[1] * 255.0f);
uint8_t b = round(c[2] * 255.0f);
uint8_t a = round(c[3] * 255.0f);
switch (format) {
case PIXMAN_a8b8g8r8:
return (a << 24) | (b << 16) | (g << 8) | r;
default:
assert(0);
return 0;
}
}
static int
gl_renderer_surface_copy_content(struct weston_surface *surface,
void *target, size_t size,
int src_x, int src_y,
int width, int height)
{
static const GLfloat verts[4 * 2] = {
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f
};
static const GLfloat projmat_normal[16] = { /* transpose */
2.0f, 0.0f, 0.0f, 0.0f,
0.0f, 2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
-1.0f, -1.0f, 0.0f, 1.0f
};
static const GLfloat projmat_yinvert[16] = { /* transpose */
2.0f, 0.0f, 0.0f, 0.0f,
0.0f, -2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f
};
const pixman_format_code_t format = PIXMAN_a8b8g8r8;
const size_t bytespp = 4; /* PIXMAN_a8b8g8r8 */
const GLenum gl_format = GL_RGBA; /* PIXMAN_a8b8g8r8 little-endian */
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
int cw, ch;
GLuint fbo;
GLuint tex;
GLenum status;
const GLfloat *proj;
int i;
gl_renderer_surface_get_content_size(surface, &cw, &ch);
switch (gs->buffer_type) {
case BUFFER_TYPE_NULL:
return -1;
case BUFFER_TYPE_SOLID:
*(uint32_t *)target = pack_color(format, gs->color);
return 0;
case BUFFER_TYPE_SHM:
gl_renderer_flush_damage(surface);
/* fall through */
case BUFFER_TYPE_EGL:
break;
}
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, cw, ch,
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, tex, 0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
weston_log("%s: fbo error: %#x\n", __func__, status);
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
return -1;
}
glViewport(0, 0, cw, ch);
glDisable(GL_BLEND);
use_shader(gr, gs->shader);
if (gs->y_inverted)
proj = projmat_normal;
else
proj = projmat_yinvert;
glUniformMatrix4fv(gs->shader->proj_uniform, 1, GL_FALSE, proj);
glUniform1f(gs->shader->alpha_uniform, 1.0f);
for (i = 0; i < gs->num_textures; i++) {
glUniform1i(gs->shader->tex_uniforms[i], i);
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(gs->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
/* position: */
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, verts);
glEnableVertexAttribArray(0);
/* texcoord: */
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, verts);
glEnableVertexAttribArray(1);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
glPixelStorei(GL_PACK_ALIGNMENT, bytespp);
glReadPixels(src_x, src_y, width, height, gl_format,
GL_UNSIGNED_BYTE, target);
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
return 0;
}
static void
surface_state_destroy(struct gl_surface_state *gs, struct gl_renderer *gr)
{
int i;
wl_list_remove(&gs->surface_destroy_listener.link);
wl_list_remove(&gs->renderer_destroy_listener.link);
gs->surface->renderer_state = NULL;
glDeleteTextures(gs->num_textures, gs->textures);
for (i = 0; i < gs->num_images; i++)
egl_image_unref(gs->images[i]);
weston_buffer_reference(&gs->buffer_ref, NULL);
weston_buffer_release_reference(&gs->buffer_release_ref, NULL);
pixman_region32_fini(&gs->texture_damage);
free(gs);
}
static void
surface_state_handle_surface_destroy(struct wl_listener *listener, void *data)
{
struct gl_surface_state *gs;
struct gl_renderer *gr;
gs = container_of(listener, struct gl_surface_state,
surface_destroy_listener);
gr = get_renderer(gs->surface->compositor);
surface_state_destroy(gs, gr);
}
static void
surface_state_handle_renderer_destroy(struct wl_listener *listener, void *data)
{
struct gl_surface_state *gs;
struct gl_renderer *gr;
gr = data;
gs = container_of(listener, struct gl_surface_state,
renderer_destroy_listener);
surface_state_destroy(gs, gr);
}
static int
gl_renderer_create_surface(struct weston_surface *surface)
{
struct gl_surface_state *gs;
struct gl_renderer *gr = get_renderer(surface->compositor);
gs = zalloc(sizeof *gs);
if (gs == NULL)
return -1;
/* A buffer is never attached to solid color surfaces, yet
* they still go through texcoord computations. Do not divide
* by zero there.
*/
gs->pitch = 1;
gs->y_inverted = true;
gs->surface = surface;
pixman_region32_init(&gs->texture_damage);
surface->renderer_state = gs;
gs->surface_destroy_listener.notify =
surface_state_handle_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&gs->surface_destroy_listener);
gs->renderer_destroy_listener.notify =
surface_state_handle_renderer_destroy;
wl_signal_add(&gr->destroy_signal,
&gs->renderer_destroy_listener);
if (surface->buffer_ref.buffer) {
gl_renderer_attach(surface, surface->buffer_ref.buffer);
gl_renderer_flush_damage(surface);
}
return 0;
}
static const char vertex_shader[] =
"uniform mat4 proj;\n"
"attribute vec2 position;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = proj * vec4(position, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
"}\n";
/* Declare common fragment shader uniforms */
#define FRAGMENT_CONVERT_YUV \
" y *= alpha;\n" \
" u *= alpha;\n" \
" v *= alpha;\n" \
" gl_FragColor.r = y + 1.59602678 * v;\n" \
" gl_FragColor.g = y - 0.39176229 * u - 0.81296764 * v;\n" \
" gl_FragColor.b = y + 2.01723214 * u;\n" \
" gl_FragColor.a = alpha;\n"
static const char fragment_debug[] =
" gl_FragColor = vec4(0.0, 0.3, 0.0, 0.2) + gl_FragColor * 0.8;\n";
static const char fragment_brace[] =
"}\n";
static const char texture_fragment_shader_rgba[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * texture2D(tex, v_texcoord)\n;"
;
static const char texture_fragment_shader_rgbx[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor.rgb = alpha * texture2D(tex, v_texcoord).rgb\n;"
" gl_FragColor.a = alpha;\n"
;
static const char texture_fragment_shader_egl_external[] =
"#extension GL_OES_EGL_image_external : require\n"
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform samplerExternalOES tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * texture2D(tex, v_texcoord)\n;"
;
static const char texture_fragment_shader_y_uv[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).r - 0.5;\n"
" float v = texture2D(tex1, v_texcoord).g - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char texture_fragment_shader_y_u_v[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"uniform sampler2D tex2;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).x - 0.5;\n"
" float v = texture2D(tex2, v_texcoord).x - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char texture_fragment_shader_y_xuxv[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).g - 0.5;\n"
" float v = texture2D(tex1, v_texcoord).a - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char solid_fragment_shader[] =
"precision mediump float;\n"
"uniform vec4 color;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * color\n;"
;
static int
compile_shader(GLenum type, int count, const char **sources)
{
GLuint s;
char msg[512];
GLint status;
s = glCreateShader(type);
glShaderSource(s, count, sources, NULL);
glCompileShader(s);
glGetShaderiv(s, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(s, sizeof msg, NULL, msg);
weston_log("shader info: %s\n", msg);
return GL_NONE;
}
return s;
}
static int
shader_init(struct gl_shader *shader, struct gl_renderer *renderer,
const char *vertex_source, const char *fragment_source)
{
char msg[512];
GLint status;
int count;
const char *sources[3];
shader->vertex_shader =
compile_shader(GL_VERTEX_SHADER, 1, &vertex_source);
if (renderer->fragment_shader_debug) {
sources[0] = fragment_source;
sources[1] = fragment_debug;
sources[2] = fragment_brace;
count = 3;
} else {
sources[0] = fragment_source;
sources[1] = fragment_brace;
count = 2;
}
shader->fragment_shader =
compile_shader(GL_FRAGMENT_SHADER, count, sources);
shader->program = glCreateProgram();
glAttachShader(shader->program, shader->vertex_shader);
glAttachShader(shader->program, shader->fragment_shader);
glBindAttribLocation(shader->program, 0, "position");
glBindAttribLocation(shader->program, 1, "texcoord");
glLinkProgram(shader->program);
glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
weston_log("link info: %s\n", msg);
return -1;
}
shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
shader->tex_uniforms[0] = glGetUniformLocation(shader->program, "tex");
shader->tex_uniforms[1] = glGetUniformLocation(shader->program, "tex1");
shader->tex_uniforms[2] = glGetUniformLocation(shader->program, "tex2");
shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
shader->color_uniform = glGetUniformLocation(shader->program, "color");
return 0;
}
static void
shader_release(struct gl_shader *shader)
{
glDeleteShader(shader->vertex_shader);
glDeleteShader(shader->fragment_shader);
glDeleteProgram(shader->program);
shader->vertex_shader = 0;
shader->fragment_shader = 0;
shader->program = 0;
}
static void
log_extensions(const char *name, const char *extensions)
{
const char *p, *end;
int l;
int len;
l = weston_log("%s:", name);
p = extensions;
while (*p) {
end = strchrnul(p, ' ');
len = end - p;
if (l + len > 78)
l = weston_log_continue("\n" STAMP_SPACE "%.*s",
len, p);
else
l += weston_log_continue(" %.*s", len, p);
for (p = end; isspace(*p); p++)
;
}
weston_log_continue("\n");
}
static void
log_egl_info(EGLDisplay egldpy)
{
const char *str;
str = eglQueryString(egldpy, EGL_VERSION);
weston_log("EGL version: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_VENDOR);
weston_log("EGL vendor: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_CLIENT_APIS);
weston_log("EGL client APIs: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_EXTENSIONS);
log_extensions("EGL extensions", str ? str : "(null)");
}
static void
log_gl_info(void)
{
const char *str;
str = (char *)glGetString(GL_VERSION);
weston_log("GL version: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_SHADING_LANGUAGE_VERSION);
weston_log("GLSL version: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_VENDOR);
weston_log("GL vendor: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_RENDERER);
weston_log("GL renderer: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_EXTENSIONS);
log_extensions("GL extensions", str ? str : "(null)");
}
static void
gl_renderer_output_set_border(struct weston_output *output,
enum gl_renderer_border_side side,
int32_t width, int32_t height,
int32_t tex_width, unsigned char *data)
{
struct gl_output_state *go = get_output_state(output);
if (go->borders[side].width != width ||
go->borders[side].height != height)
/* In this case, we have to blow everything and do a full
* repaint. */
go->border_status |= BORDER_SIZE_CHANGED | BORDER_ALL_DIRTY;
if (data == NULL) {
width = 0;
height = 0;
}
go->borders[side].width = width;
go->borders[side].height = height;
go->borders[side].tex_width = tex_width;
go->borders[side].data = data;
go->border_status |= 1 << side;
}
static int
gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface);
static EGLSurface
gl_renderer_create_window_surface(struct gl_renderer *gr,
EGLNativeWindowType window_for_legacy,
void *window_for_platform,
const uint32_t *drm_formats,
unsigned drm_formats_count)
{
EGLSurface egl_surface = EGL_NO_SURFACE;
EGLConfig egl_config;
egl_config = gl_renderer_get_egl_config(gr, EGL_WINDOW_BIT,
drm_formats, drm_formats_count);
if (egl_config == EGL_NO_CONFIG_KHR)
return EGL_NO_SURFACE;
log_egl_config_info(gr->egl_display, egl_config);
if (gr->create_platform_window)
egl_surface = gr->create_platform_window(gr->egl_display,
egl_config,
window_for_platform,
NULL);
else
egl_surface = eglCreateWindowSurface(gr->egl_display,
egl_config,
window_for_legacy, NULL);
return egl_surface;
}
static int
gl_renderer_output_create(struct weston_output *output,
EGLSurface surface)
{
struct gl_output_state *go;
int i;
go = zalloc(sizeof *go);
if (go == NULL)
return -1;
go->egl_surface = surface;
for (i = 0; i < BUFFER_DAMAGE_COUNT; i++)
pixman_region32_init(&go->buffer_damage[i]);
wl_list_init(&go->timeline_render_point_list);
go->begin_render_sync = EGL_NO_SYNC_KHR;
go->end_render_sync = EGL_NO_SYNC_KHR;
output->renderer_state = go;
return 0;
}
static int
gl_renderer_output_window_create(struct weston_output *output,
EGLNativeWindowType window_for_legacy,
void *window_for_platform,
const uint32_t *drm_formats,
unsigned drm_formats_count)
{
struct weston_compositor *ec = output->compositor;
struct gl_renderer *gr = get_renderer(ec);
EGLSurface egl_surface = EGL_NO_SURFACE;
int ret = 0;
egl_surface = gl_renderer_create_window_surface(gr,
window_for_legacy,
window_for_platform,
drm_formats,
drm_formats_count);
if (egl_surface == EGL_NO_SURFACE) {
weston_log("failed to create egl surface\n");
return -1;
}
ret = gl_renderer_output_create(output, egl_surface);
if (ret < 0)
weston_platform_destroy_egl_surface(gr->egl_display, egl_surface);
return ret;
}
static void
gl_renderer_output_destroy(struct weston_output *output)
{
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_output_state *go = get_output_state(output);
struct timeline_render_point *trp, *tmp;
int i;
for (i = 0; i < 2; i++)
pixman_region32_fini(&go->buffer_damage[i]);
eglMakeCurrent(gr->egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
weston_platform_destroy_egl_surface(gr->egl_display, go->egl_surface);
if (!wl_list_empty(&go->timeline_render_point_list))
weston_log("warning: discarding pending timeline render"
"objects at output destruction");
wl_list_for_each_safe(trp, tmp, &go->timeline_render_point_list, link)
timeline_render_point_destroy(trp);
if (go->begin_render_sync != EGL_NO_SYNC_KHR)
gr->destroy_sync(gr->egl_display, go->begin_render_sync);
if (go->end_render_sync != EGL_NO_SYNC_KHR)
gr->destroy_sync(gr->egl_display, go->end_render_sync);
free(go);
}
static int
gl_renderer_create_fence_fd(struct weston_output *output)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
int fd;
if (go->end_render_sync == EGL_NO_SYNC_KHR)
return -1;
fd = gr->dup_native_fence_fd(gr->egl_display, go->end_render_sync);
if (fd == EGL_NO_NATIVE_FENCE_FD_ANDROID)
return -1;
return fd;
}
static void
gl_renderer_destroy(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
struct dmabuf_image *image, *next;
wl_signal_emit(&gr->destroy_signal, gr);
if (gr->has_bind_display)
gr->unbind_display(gr->egl_display, ec->wl_display);
/* Work around crash in egl_dri2.c's dri2_make_current() - when does this apply? */
eglMakeCurrent(gr->egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
wl_list_for_each_safe(image, next, &gr->dmabuf_images, link)
dmabuf_image_destroy(image);
if (gr->dummy_surface != EGL_NO_SURFACE)
weston_platform_destroy_egl_surface(gr->egl_display,
gr->dummy_surface);
eglTerminate(gr->egl_display);
eglReleaseThread();
wl_list_remove(&gr->output_destroy_listener.link);
wl_array_release(&gr->vertices);
wl_array_release(&gr->vtxcnt);
if (gr->fragment_binding)
weston_binding_destroy(gr->fragment_binding);
if (gr->fan_binding)
weston_binding_destroy(gr->fan_binding);
free(gr);
}
/** Checks whether a platform EGL client extension is supported
*
* \param ec The weston compositor
* \param extension_suffix The EGL client extension suffix
* \return 1 if supported, 0 if using fallbacks, -1 unsupported
*
* This function checks whether a specific platform_* extension is supported
* by EGL.
*
* The extension suffix should be the suffix of the platform extension (that
* specifies a platform argument as defined in EGL_EXT_platform_base). For
* example, passing "foo" will check whether either "EGL_KHR_platform_foo",
* "EGL_EXT_platform_foo", or "EGL_MESA_platform_foo" is supported.
*
* The return value is 1:
* - if the supplied EGL client extension is supported.
* The return value is 0:
* - if the platform_base client extension isn't supported so will
* fallback to eglGetDisplay and friends.
* The return value is -1:
* - if the supplied EGL client extension is not supported.
*/
static int
gl_renderer_supports(struct weston_compositor *ec,
const char *extension_suffix)
{
static const char *extensions = NULL;
char s[64];
if (!extensions) {
extensions = (const char *) eglQueryString(
EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (!extensions)
return 0;
log_extensions("EGL client extensions",
extensions);
}
if (!weston_check_egl_extension(extensions, "EGL_EXT_platform_base"))
return 0;
snprintf(s, sizeof s, "EGL_KHR_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
snprintf(s, sizeof s, "EGL_EXT_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
snprintf(s, sizeof s, "EGL_MESA_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
/* at this point we definitely have some platform extensions but
* haven't found the supplied platform, so chances are it's
* not supported. */
return -1;
}
static const char *
platform_to_extension(EGLenum platform)
{
switch (platform) {
case EGL_PLATFORM_GBM_KHR:
return "gbm";
case EGL_PLATFORM_WAYLAND_KHR:
return "wayland";
case EGL_PLATFORM_X11_KHR:
return "x11";
default:
assert(0 && "bad EGL platform enum");
}
}
static void
output_handle_destroy(struct wl_listener *listener, void *data)
{
struct gl_renderer *gr;
struct weston_output *output = data;
gr = container_of(listener, struct gl_renderer,
output_destroy_listener);
if (wl_list_empty(&output->compositor->output_list))
eglMakeCurrent(gr->egl_display, gr->dummy_surface,
gr->dummy_surface, gr->egl_context);
}
static int
gl_renderer_create_pbuffer_surface(struct gl_renderer *gr) {
EGLConfig pbuffer_config;
static const EGLint pbuffer_attribs[] = {
EGL_WIDTH, 10,
EGL_HEIGHT, 10,
EGL_NONE
};
pbuffer_config = gl_renderer_get_egl_config(gr, EGL_PBUFFER_BIT,
NULL, 0);
if (pbuffer_config == EGL_NO_CONFIG_KHR) {
weston_log("failed to choose EGL config for PbufferSurface\n");
return -1;
}
gr->dummy_surface = eglCreatePbufferSurface(gr->egl_display,
pbuffer_config,
pbuffer_attribs);
if (gr->dummy_surface == EGL_NO_SURFACE) {
weston_log("failed to create PbufferSurface\n");
return -1;
}
return 0;
}
static int
gl_renderer_display_create(struct weston_compositor *ec,
EGLenum platform,
void *native_display,
const uint32_t *drm_formats,
unsigned drm_formats_count)
{
struct gl_renderer *gr;
EGLint major, minor;
int supports = 0;
if (platform) {
supports = gl_renderer_supports(
ec, platform_to_extension(platform));
if (supports < 0)
return -1;
}
gr = zalloc(sizeof *gr);
if (gr == NULL)
return -1;
gr->base.read_pixels = gl_renderer_read_pixels;
gr->base.repaint_output = gl_renderer_repaint_output;
gr->base.flush_damage = gl_renderer_flush_damage;
gr->base.attach = gl_renderer_attach;
gr->base.surface_set_color = gl_renderer_surface_set_color;
gr->base.destroy = gl_renderer_destroy;
gr->base.surface_get_content_size =
gl_renderer_surface_get_content_size;
gr->base.surface_copy_content = gl_renderer_surface_copy_content;
gr->platform = platform;
gr->egl_display = NULL;
/* extension_suffix is supported */
if (supports) {
if (!get_platform_display) {
get_platform_display = (void *) eglGetProcAddress(
"eglGetPlatformDisplayEXT");
}
/* also wrap this in the supports check because
* eglGetProcAddress can return non-NULL and still not
* support the feature at runtime, so ensure the
* appropriate extension checks have been done. */
if (get_platform_display && platform) {
gr->egl_display = get_platform_display(platform,
native_display,
NULL);
}
}
if (!gr->egl_display) {
weston_log("warning: either no EGL_EXT_platform_base "
"support or specific platform support; "
"falling back to eglGetDisplay.\n");
gr->egl_display = eglGetDisplay(native_display);
}
if (gr->egl_display == EGL_NO_DISPLAY) {
weston_log("failed to create display\n");
goto fail;
}
if (!eglInitialize(gr->egl_display, &major, &minor)) {
weston_log("failed to initialize display\n");
goto fail_with_error;
}
log_egl_info(gr->egl_display);
ec->renderer = &gr->base;
if (gl_renderer_setup_egl_extensions(ec) < 0)
goto fail_with_error;
if (!gr->has_configless_context) {
EGLint surface_type = EGL_WINDOW_BIT;
if (!gr->has_surfaceless_context)
surface_type |= EGL_PBUFFER_BIT;
gr->egl_config = gl_renderer_get_egl_config(gr,
surface_type,
drm_formats,
drm_formats_count);
if (gr->egl_config == EGL_NO_CONFIG_KHR) {
weston_log("failed to choose EGL config\n");
goto fail_terminate;
}
}
ec->capabilities |= WESTON_CAP_ROTATION_ANY;
ec->capabilities |= WESTON_CAP_CAPTURE_YFLIP;
ec->capabilities |= WESTON_CAP_VIEW_CLIP_MASK;
if (gr->has_native_fence_sync && gr->has_wait_sync)
ec->capabilities |= WESTON_CAP_EXPLICIT_SYNC;
wl_list_init(&gr->dmabuf_images);
if (gr->has_dmabuf_import) {
gr->base.import_dmabuf = gl_renderer_import_dmabuf;
gr->base.query_dmabuf_formats =
gl_renderer_query_dmabuf_formats;
gr->base.query_dmabuf_modifiers =
gl_renderer_query_dmabuf_modifiers;
}
if (gr->has_surfaceless_context) {
weston_log("EGL_KHR_surfaceless_context available\n");
gr->dummy_surface = EGL_NO_SURFACE;
} else {
weston_log("EGL_KHR_surfaceless_context unavailable. "
"Trying PbufferSurface\n");
if (gl_renderer_create_pbuffer_surface(gr) < 0)
goto fail_with_error;
}
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_RGB565);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_YUV420);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_NV12);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_YUYV);
wl_signal_init(&gr->destroy_signal);
if (gl_renderer_setup(ec, gr->dummy_surface) < 0) {
if (gr->dummy_surface != EGL_NO_SURFACE)
weston_platform_destroy_egl_surface(gr->egl_display,
gr->dummy_surface);
goto fail_with_error;
}
return 0;
fail_with_error:
gl_renderer_print_egl_error_state();
fail_terminate:
eglTerminate(gr->egl_display);
fail:
free(gr);
return -1;
}
static int
compile_shaders(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
gr->texture_shader_rgba.vertex_source = vertex_shader;
gr->texture_shader_rgba.fragment_source = texture_fragment_shader_rgba;
gr->texture_shader_rgbx.vertex_source = vertex_shader;
gr->texture_shader_rgbx.fragment_source = texture_fragment_shader_rgbx;
gr->texture_shader_egl_external.vertex_source = vertex_shader;
gr->texture_shader_egl_external.fragment_source =
texture_fragment_shader_egl_external;
gr->texture_shader_y_uv.vertex_source = vertex_shader;
gr->texture_shader_y_uv.fragment_source = texture_fragment_shader_y_uv;
gr->texture_shader_y_u_v.vertex_source = vertex_shader;
gr->texture_shader_y_u_v.fragment_source =
texture_fragment_shader_y_u_v;
gr->texture_shader_y_xuxv.vertex_source = vertex_shader;
gr->texture_shader_y_xuxv.fragment_source =
texture_fragment_shader_y_xuxv;
gr->solid_shader.vertex_source = vertex_shader;
gr->solid_shader.fragment_source = solid_fragment_shader;
return 0;
}
static void
fragment_debug_binding(struct weston_keyboard *keyboard,
const struct timespec *time,
uint32_t key, void *data)
{
struct weston_compositor *ec = data;
struct gl_renderer *gr = get_renderer(ec);
struct weston_output *output;
gr->fragment_shader_debug = !gr->fragment_shader_debug;
shader_release(&gr->texture_shader_rgba);
shader_release(&gr->texture_shader_rgbx);
shader_release(&gr->texture_shader_egl_external);
shader_release(&gr->texture_shader_y_uv);
shader_release(&gr->texture_shader_y_u_v);
shader_release(&gr->texture_shader_y_xuxv);
shader_release(&gr->solid_shader);
/* Force use_shader() to call glUseProgram(), since we need to use
* the recompiled version of the shader. */
gr->current_shader = NULL;
wl_list_for_each(output, &ec->output_list, link)
weston_output_damage(output);
}
static void
fan_debug_repaint_binding(struct weston_keyboard *keyboard,
const struct timespec *time,
uint32_t key, void *data)
{
struct weston_compositor *compositor = data;
struct gl_renderer *gr = get_renderer(compositor);
gr->fan_debug = !gr->fan_debug;
weston_compositor_damage_all(compositor);
}
static uint32_t
get_gl_version(void)
{
const char *version;
int major, minor;
version = (const char *) glGetString(GL_VERSION);
if (version &&
(sscanf(version, "%d.%d", &major, &minor) == 2 ||
sscanf(version, "OpenGL ES %d.%d", &major, &minor) == 2)) {
return GR_GL_VERSION(major, minor);
}
return GR_GL_VERSION_INVALID;
}
static int
gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
{
struct gl_renderer *gr = get_renderer(ec);
const char *extensions;
EGLBoolean ret;
EGLint context_attribs[16] = {
EGL_CONTEXT_CLIENT_VERSION, 0,
};
unsigned int nattr = 2;
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
weston_log("failed to bind EGL_OPENGL_ES_API\n");
gl_renderer_print_egl_error_state();
return -1;
}
/*
* Being the compositor we require minimum output latency,
* so request a high priority context for ourselves - that should
* reschedule all of our rendering and its dependencies to be completed
* first. If the driver doesn't permit us to create a high priority
* context, it will fallback to the default priority (MEDIUM).
*/
if (gr->has_context_priority) {
context_attribs[nattr++] = EGL_CONTEXT_PRIORITY_LEVEL_IMG;
context_attribs[nattr++] = EGL_CONTEXT_PRIORITY_HIGH_IMG;
}
assert(nattr < ARRAY_LENGTH(context_attribs));
context_attribs[nattr] = EGL_NONE;
/* try to create an OpenGLES 3 context first */
context_attribs[1] = 3;
gr->egl_context = eglCreateContext(gr->egl_display, gr->egl_config,
EGL_NO_CONTEXT, context_attribs);
if (gr->egl_context == NULL) {
/* and then fallback to OpenGLES 2 */
context_attribs[1] = 2;
gr->egl_context = eglCreateContext(gr->egl_display,
gr->egl_config,
EGL_NO_CONTEXT,
context_attribs);
if (gr->egl_context == NULL) {
weston_log("failed to create context\n");
gl_renderer_print_egl_error_state();
return -1;
}
}
if (gr->has_context_priority) {
EGLint value = EGL_CONTEXT_PRIORITY_MEDIUM_IMG;
eglQueryContext(gr->egl_display, gr->egl_context,
EGL_CONTEXT_PRIORITY_LEVEL_IMG, &value);
if (value != EGL_CONTEXT_PRIORITY_HIGH_IMG) {
weston_log("Failed to obtain a high priority context.\n");
/* Not an error, continue on as normal */
}
}
ret = eglMakeCurrent(gr->egl_display, egl_surface,
egl_surface, gr->egl_context);
if (ret == EGL_FALSE) {
weston_log("Failed to make EGL context current.\n");
gl_renderer_print_egl_error_state();
return -1;
}
gr->gl_version = get_gl_version();
if (gr->gl_version == GR_GL_VERSION_INVALID) {
weston_log("warning: failed to detect GLES version, "
"defaulting to 2.0.\n");
gr->gl_version = GR_GL_VERSION(2, 0);
}
log_gl_info();
gr->image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
extensions = (const char *) glGetString(GL_EXTENSIONS);
if (!extensions) {
weston_log("Retrieving GL extension string failed.\n");
return -1;
}
if (!weston_check_egl_extension(extensions, "GL_EXT_texture_format_BGRA8888")) {
weston_log("GL_EXT_texture_format_BGRA8888 not available\n");
return -1;
}
if (weston_check_egl_extension(extensions, "GL_EXT_read_format_bgra"))
ec->read_format = PIXMAN_a8r8g8b8;
else
ec->read_format = PIXMAN_a8b8g8r8;
if (gr->gl_version >= GR_GL_VERSION(3, 0) ||
weston_check_egl_extension(extensions, "GL_EXT_unpack_subimage"))
gr->has_unpack_subimage = true;
if (gr->gl_version >= GR_GL_VERSION(3, 0) ||
weston_check_egl_extension(extensions, "GL_EXT_texture_rg"))
gr->has_gl_texture_rg = true;
if (weston_check_egl_extension(extensions, "GL_OES_EGL_image_external"))
gr->has_egl_image_external = true;
glActiveTexture(GL_TEXTURE0);
if (compile_shaders(ec))
return -1;
gr->fragment_binding =
weston_compositor_add_debug_binding(ec, KEY_S,
fragment_debug_binding,
ec);
gr->fan_binding =
weston_compositor_add_debug_binding(ec, KEY_F,
fan_debug_repaint_binding,
ec);
gr->output_destroy_listener.notify = output_handle_destroy;
wl_signal_add(&ec->output_destroyed_signal,
&gr->output_destroy_listener);
weston_log("GL ES 2 renderer features:\n");
weston_log_continue(STAMP_SPACE "read-back format: %s\n",
ec->read_format == PIXMAN_a8r8g8b8 ? "BGRA" : "RGBA");
weston_log_continue(STAMP_SPACE "wl_shm sub-image to texture: %s\n",
gr->has_unpack_subimage ? "yes" : "no");
weston_log_continue(STAMP_SPACE "EGL Wayland extension: %s\n",
gr->has_bind_display ? "yes" : "no");
return 0;
}
WL_EXPORT struct gl_renderer_interface gl_renderer_interface = {
.display_create = gl_renderer_display_create,
.output_window_create = gl_renderer_output_window_create,
.output_destroy = gl_renderer_output_destroy,
.output_set_border = gl_renderer_output_set_border,
.create_fence_fd = gl_renderer_create_fence_fd,
};
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