/*
* Copyright © 2012 Intel Corporation
* Copyright © 2015,2019,2021 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 <GLES3/gl3.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <ctype.h>
#include <float.h>
#include <assert.h>
#include <linux/input.h>
#include <unistd.h>
#include "linux-sync-file.h"
#include "timeline.h"
#include "color.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 "shared/weston-drm-fourcc.h"
#include "shared/weston-egl-ext.h"
#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_fbo_texture {
GLuint fbo;
GLuint tex;
int32_t width;
int32_t height;
};
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;
bool swap_behavior_is_preserved;
struct weston_matrix output_matrix;
EGLSyncKHR begin_render_sync, end_render_sync;
/* struct timeline_render_point::link */
struct wl_list timeline_render_point_list;
struct gl_fbo_texture shadow;
};
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;
enum gl_shader_texture_variant shader_variant;
};
struct dmabuf_format {
uint32_t format;
struct wl_list link;
uint64_t *modifiers;
unsigned *external_only;
int num_modifiers;
};
struct yuv_plane_descriptor {
int width_divisor;
int height_divisor;
uint32_t format;
int plane_index;
};
enum texture_type {
TEXTURE_Y_XUXV_WL,
TEXTURE_Y_UV_WL,
TEXTURE_Y_U_V_WL,
TEXTURE_XYUV_WL
};
struct yuv_format_descriptor {
uint32_t format;
int input_planes;
int output_planes;
enum texture_type texture_type;
struct yuv_plane_descriptor plane[4];
};
struct gl_surface_state {
GLfloat color[4];
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];
int num_images;
enum gl_shader_texture_variant shader_variant;
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;
bool direct_display;
/* 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 uint32_t
gr_gl_version(uint16_t major, uint16_t minor)
{
return ((uint32_t)major << 16) | minor;
}
static int
gr_gl_version_major(uint32_t ver)
{
return ver >> 16;
}
static int
gr_gl_version_minor(uint32_t ver)
{
return ver & 0xffff;
}
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 bool
shadow_exists(const struct gl_output_state *go)
{
return go->shadow.fbo != 0;
}
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(trp->output->compositor, 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_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_log_scope_is_enabled(gr->compositor->timeline) ||
!gr->has_native_fence_sync ||
sync == EGL_NO_SYNC_KHR)
return;
go = get_output_state(output);
loop = wl_display_get_event_loop(gr->compositor->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;
/* in multi-planar cases, egl_image_create() might fail on an
* intermediary step resulting in egl_image being NULL. In order to go
* over all successful ones, and avoid leaking one of them (the last
* one), we'll have to guard against it -- until we'll have a correct
* way of disposing of any previous created images.
*/
if (!image)
return 0;
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;
}
/** Create a texture and a framebuffer object
*
* \param fbotex To be initialized.
* \param width Texture width in pixels.
* \param height Texture heigh in pixels.
* \param internal_format See glTexImage2D.
* \param format See glTexImage2D.
* \param type See glTexImage2D.
* \return True on success, false otherwise.
*/
static bool
gl_fbo_texture_init(struct gl_fbo_texture *fbotex,
int32_t width,
int32_t height,
GLint internal_format,
GLenum format,
GLenum type)
{
int fb_status;
GLuint shadow_fbo;
GLuint shadow_tex;
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &shadow_tex);
glBindTexture(GL_TEXTURE_2D, shadow_tex);
glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0,
format, type, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &shadow_fbo);
glBindFramebuffer(GL_FRAMEBUFFER, shadow_fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, shadow_tex, 0);
fb_status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (fb_status != GL_FRAMEBUFFER_COMPLETE) {
glDeleteFramebuffers(1, &shadow_fbo);
glDeleteTextures(1, &shadow_tex);
return false;
}
fbotex->fbo = shadow_fbo;
fbotex->tex = shadow_tex;
fbotex->width = width;
fbotex->height = height;
return true;
}
static void
gl_fbo_texture_fini(struct gl_fbo_texture *fbotex)
{
glDeleteFramebuffers(1, &fbotex->fbo);
fbotex->fbo = 0;
glDeleteTextures(1, &fbotex->tex);
fbotex->tex = 0;
}
static void
gl_renderer_send_shader_error(struct weston_view *view)
{
struct wl_resource *resource = view->surface->resource;
if (!resource)
return;
wl_client_post_implementation_error(wl_resource_get_client(resource),
"Weston GL-renderer shader failed for wl_surface@%u",
wl_resource_get_id(resource));
}
static void
triangle_fan_debug(struct gl_renderer *gr,
const struct gl_shader_config *sconf,
struct weston_output *output,
int first, int count)
{
int i;
/* There can be at most eight vertices for a given view. */
GLushort buffer[(8 - 1 + 8 - 2) * 2];
GLushort *index;
GLsizei nelems;
static int color_idx = 0;
struct gl_shader_config alt;
const GLfloat *col;
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 },
};
col = color[color_idx++ % ARRAY_LENGTH(color)];
alt = (struct gl_shader_config) {
.req = {
.variant = SHADER_VARIANT_SOLID,
.input_is_premult = true,
},
.projection = sconf->projection,
.view_alpha = 1.0f,
.unicolor = { col[0], col[1], col[2], col[3] },
};
if (!gl_shader_config_set_color_transform(&alt,
output->from_sRGB_to_blend)) {
weston_log("GL-renderer: %s failed to generate a color transformation.\n",
__func__);
return;
}
gl_renderer_use_program(gr, &alt);
nelems = (count - 1 + count - 2) * 2;
assert((unsigned long)nelems <= ARRAY_LENGTH(buffer));
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;
}
glDrawElements(GL_LINES, nelems, GL_UNSIGNED_SHORT, buffer);
gl_renderer_use_program(gr, sconf);
}
static void
repaint_region(struct gl_renderer *gr,
struct weston_view *ev,
struct weston_output *output,
pixman_region32_t *region,
pixman_region32_t *surf_region,
const struct gl_shader_config *sconf)
{
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);
if (!gl_renderer_use_program(gr, sconf)) {
gl_renderer_send_shader_error(ev);
/* continue drawing with the fallback shader */
}
for (i = 0, first = 0; i < nfans; i++) {
glDrawArrays(GL_TRIANGLE_FAN, first, vtxcnt[i]);
if (gr->fan_debug)
triangle_fan_debug(gr, sconf, output, 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
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;
}
static void
censor_override(struct gl_shader_config *sconf,
struct weston_output *output)
{
struct gl_shader_config alt = {
.req = {
.variant = SHADER_VARIANT_SOLID,
.input_is_premult = true,
},
.projection = sconf->projection,
.view_alpha = sconf->view_alpha,
.unicolor = { 0.40, 0.0, 0.0, 1.0 },
};
if (!gl_shader_config_set_color_transform(&alt,
output->from_sRGB_to_blend)) {
weston_log("GL-renderer: %s failed to generate a color transformation.\n",
__func__);
}
*sconf = alt;
}
/* 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.
* If censoring is needed, smashes the GL shader config.
*/
static void
maybe_censor_override(struct gl_shader_config *sconf,
struct weston_output *output,
struct weston_view *ev)
{
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);
if (gs->direct_display) {
censor_override(sconf, output);
return;
}
/* 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;
if (recording_censor || unprotected_censor)
censor_override(sconf, output);
}
static void
gl_shader_config_set_input_textures(struct gl_shader_config *sconf,
struct gl_surface_state *gs)
{
int i;
sconf->req.variant = gs->shader_variant;
sconf->req.input_is_premult =
gl_shader_texture_variant_can_be_premult(gs->shader_variant);
for (i = 0; i < 4; i++)
sconf->unicolor[i] = gs->color[i];
assert(gs->num_textures <= GL_SHADER_INPUT_TEX_MAX);
for (i = 0; i < gs->num_textures; i++)
sconf->input_tex[i] = gs->textures[i];
for (; i < GL_SHADER_INPUT_TEX_MAX; i++)
sconf->input_tex[i] = 0;
}
static bool
gl_shader_config_init_for_paint_node(struct gl_shader_config *sconf,
struct weston_paint_node *pnode,
GLint filter)
{
struct gl_surface_state *gs = get_surface_state(pnode->surface);
struct gl_output_state *go = get_output_state(pnode->output);
if (!pnode->surf_xform_valid)
return false;
*sconf = (struct gl_shader_config) {
.projection = go->output_matrix,
.view_alpha = pnode->view->alpha,
.input_tex_filter = filter,
};
gl_shader_config_set_input_textures(sconf, gs);
if (!gl_shader_config_set_color_transform(sconf, pnode->surf_xform.transform)) {
weston_log("GL-renderer: failed to generate a color transformation.\n");
return false;
}
return true;
}
static void
draw_paint_node(struct weston_paint_node *pnode,
pixman_region32_t *damage /* in global coordinates */)
{
struct gl_renderer *gr = get_renderer(pnode->surface->compositor);
struct gl_surface_state *gs = get_surface_state(pnode->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;
struct gl_shader_config sconf;
/* 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_variant == SHADER_VARIANT_NONE && !gs->direct_display)
return;
pixman_region32_init(&repaint);
pixman_region32_intersect(&repaint,
&pnode->view->transform.boundingbox, damage);
pixman_region32_subtract(&repaint, &repaint, &pnode->view->clip);
if (!pixman_region32_not_empty(&repaint))
goto out;
if (ensure_surface_buffer_is_ready(gr, gs) < 0)
goto out;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
if (pnode->view->transform.enabled ||
pnode->output->current_scale != pnode->surface->buffer_viewport.buffer.scale)
filter = GL_LINEAR;
else
filter = GL_NEAREST;
if (!gl_shader_config_init_for_paint_node(&sconf, pnode, filter))
goto out;
/* blended region is whole surface minus opaque region: */
pixman_region32_init_rect(&surface_blend, 0, 0,
pnode->surface->width, pnode->surface->height);
if (pnode->view->geometry.scissor_enabled)
pixman_region32_intersect(&surface_blend, &surface_blend,
&pnode->view->geometry.scissor);
pixman_region32_subtract(&surface_blend, &surface_blend,
&pnode->surface->opaque);
/* XXX: Should we be using ev->transform.opaque here? */
pixman_region32_init(&surface_opaque);
if (pnode->view->geometry.scissor_enabled)
pixman_region32_intersect(&surface_opaque,
&pnode->surface->opaque,
&pnode->view->geometry.scissor);
else
pixman_region32_copy(&surface_opaque, &pnode->surface->opaque);
maybe_censor_override(&sconf, pnode->output, pnode->view);
if (pixman_region32_not_empty(&surface_opaque)) {
struct gl_shader_config alt = sconf;
if (alt.req.variant == SHADER_VARIANT_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.
*/
alt.req.variant = SHADER_VARIANT_RGBX;
}
if (pnode->view->alpha < 1.0)
glEnable(GL_BLEND);
else
glDisable(GL_BLEND);
repaint_region(gr, pnode->view, pnode->output,
&repaint, &surface_opaque, &alt);
gs->used_in_output_repaint = true;
}
if (pixman_region32_not_empty(&surface_blend)) {
glEnable(GL_BLEND);
repaint_region(gr, pnode->view, pnode->output,
&repaint, &surface_blend, &sconf);
gs->used_in_output_repaint = true;
}
pixman_region32_fini(&surface_blend);
pixman_region32_fini(&surface_opaque);
out:
pixman_region32_fini(&repaint);
}
static void
repaint_views(struct weston_output *output, pixman_region32_t *damage)
{
struct weston_compositor *compositor = output->compositor;
struct weston_paint_node *pnode;
wl_list_for_each_reverse(pnode, &output->paint_node_z_order_list,
z_order_link) {
if (pnode->view->plane == &compositor->primary_plane)
draw_paint_node(pnode, 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_paint_node *pnode;
wl_list_for_each_reverse(pnode, &output->paint_node_z_order_list,
z_order_link) {
struct weston_view *view = pnode->view;
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_renderer *gr,
struct gl_output_state *go,
struct gl_shader_config *sconf,
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);
} 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);
}
sconf->input_tex_filter = GL_NEAREST;
sconf->input_tex[0] = img->tex;
gl_renderer_use_program(gr, sconf);
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_shader_config sconf = {
.req = {
.variant = SHADER_VARIANT_RGBA,
.input_is_premult = true,
},
.view_alpha = 1.0f,
};
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_border_image *top, *bottom, *left, *right;
int full_width, full_height;
if (border_status == BORDER_STATUS_CLEAN)
return; /* Clean. Nothing to do. */
if (!gl_shader_config_set_color_transform(&sconf, output->from_sRGB_to_output)) {
weston_log("GL-renderer: %s failed to generate a color transformation.\n", __func__);
return;
}
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);
glViewport(0, 0, full_width, full_height);
weston_matrix_init(&sconf.projection);
weston_matrix_translate(&sconf.projection,
-full_width / 2.0, -full_height / 2.0, 0);
weston_matrix_scale(&sconf.projection,
2.0 / full_width, -2.0 / full_height, 1);
glActiveTexture(GL_TEXTURE0);
if (border_status & BORDER_TOP_DIRTY)
draw_output_border_texture(gr, go, &sconf, GL_RENDERER_BORDER_TOP,
0, 0,
full_width, top->height);
if (border_status & BORDER_LEFT_DIRTY)
draw_output_border_texture(gr, go, &sconf, GL_RENDERER_BORDER_LEFT,
0, top->height,
left->width, output->current_mode->height);
if (border_status & BORDER_RIGHT_DIRTY)
draw_output_border_texture(gr, go, &sconf, 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(gr, go, &sconf, 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 || gr->has_egl_partial_update) {
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();
}
} else if (go->swap_behavior_is_preserved) {
buffer_age = 1;
}
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 && !gr->has_egl_partial_update)
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);
}
static void
blit_shadow_to_output(struct weston_output *output,
pixman_region32_t *output_damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_shader_config sconf = {
.req = {
.variant = SHADER_VARIANT_RGBA,
.input_is_premult = true,
},
.projection = {
.d = { /* 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
},
.type = WESTON_MATRIX_TRANSFORM_SCALE |
WESTON_MATRIX_TRANSFORM_TRANSLATE,
},
.view_alpha = 1.0f,
.input_tex_filter = GL_NEAREST,
.input_tex[0] = go->shadow.tex,
};
struct gl_renderer *gr = get_renderer(output->compositor);
double width = output->current_mode->width;
double height = output->current_mode->height;
pixman_box32_t *rects;
int n_rects;
int i;
pixman_region32_t translated_damage;
GLfloat verts[4 * 2];
if (!gl_shader_config_set_color_transform(&sconf, output->from_blend_to_output)) {
weston_log("GL-renderer: %s failed to generate a color transformation.\n", __func__);
return;
}
pixman_region32_init(&translated_damage);
gl_renderer_use_program(gr, &sconf);
glDisable(GL_BLEND);
/* output_damage is in global coordinates */
pixman_region32_intersect(&translated_damage, output_damage,
&output->region);
/* Convert to output pixel coordinates in-place */
weston_output_region_from_global(output, &translated_damage);
rects = pixman_region32_rectangles(&translated_damage, &n_rects);
for (i = 0; i < n_rects; i++) {
verts[0] = rects[i].x1 / width;
verts[1] = (height - rects[i].y1) / height;
verts[2] = rects[i].x2 / width;
verts[3] = (height - rects[i].y1) / height;
verts[4] = rects[i].x2 / width;
verts[5] = (height - rects[i].y2) / height;
verts[6] = rects[i].x1 / width;
verts[7] = (height - rects[i].y2) / height;
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);
}
glBindTexture(GL_TEXTURE_2D, 0);
pixman_region32_fini(&translated_damage);
}
/* 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_paint_node *pnode;
assert(output->from_blend_to_output_by_backend ||
output->from_blend_to_output == NULL || shadow_exists(go));
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(pnode, &output->paint_node_z_order_list,
z_order_link) {
if (pnode->view->plane == &compositor->primary_plane) {
struct gl_surface_state *gs =
get_surface_state(pnode->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 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);
/* If using shadow, redirect all drawing to it first. */
if (shadow_exists(go)) {
/* XXX: Shadow code does not support resizing. */
assert(output->current_mode->width == go->shadow.width);
assert(output->current_mode->height == go->shadow.height);
glBindFramebuffer(GL_FRAMEBUFFER, go->shadow.fbo);
glViewport(0, 0, go->shadow.width, go->shadow.height);
} else {
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_BOTTOM].height,
output->current_mode->width,
output->current_mode->height);
}
/* 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);
}
if (shadow_exists(go)) {
/* Repaint into shadow. */
if (compositor->test_data.test_quirks.gl_force_full_redraw_of_shadow_fb)
repaint_views(output, &output->region);
else
repaint_views(output, output_damage);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_BOTTOM].height,
output->current_mode->width,
output->current_mode->height);
blit_shadow_to_output(output, &total_damage);
} else {
repaint_views(output, &total_damage);
}
pixman_region32_fini(&total_damage);
pixman_region32_fini(&previous_damage);
draw_output_borders(output, border_status);
wl_signal_emit(&output->frame_signal, output_damage);
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, output, go->begin_render_sync,
TIMELINE_RENDER_POINT_TYPE_BEGIN);
timeline_submit_render_sync(gr, output, go->end_render_sync,
TIMELINE_RENDER_POINT_TYPE_END);
update_buffer_release_fences(compositor, output);
gl_renderer_garbage_collect_programs(gr);
}
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;
case GL_RGBA16_EXT:
case GL_RGBA16F:
case GL_RGB10_A2:
return GL_RGBA;
default:
return internal_format;
}
}
static void
gl_renderer_flush_damage(struct weston_surface *surface)
{
const struct weston_testsuite_quirks *quirks =
&surface->compositor->test_data.test_quirks;
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);
glActiveTexture(GL_TEXTURE0);
if (gs->needs_full_upload || quirks->gl_force_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, GLenum target, int num_textures)
{
int i;
if (num_textures <= gs->num_textures) {
glDeleteTextures(gs->num_textures - num_textures, &gs->textures[num_textures]);
gs->num_textures = num_textures;
return;
}
glActiveTexture(GL_TEXTURE0);
for (i = gs->num_textures; i < num_textures; i++) {
glGenTextures(1, &gs->textures[i]);
glBindTexture(target, gs->textures[i]);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
gs->num_textures = num_textures;
glBindTexture(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;
bool using_glesv2 = gr->gl_version < gr_gl_version(3, 0);
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_variant = SHADER_VARIANT_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_variant = SHADER_VARIANT_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_variant = SHADER_VARIANT_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;
#if __BYTE_ORDER == __LITTLE_ENDIAN
case WL_SHM_FORMAT_ABGR2101010:
if (!gr->has_texture_type_2_10_10_10_rev) {
goto unsupported;
}
gs->shader_variant = SHADER_VARIANT_RGBA;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = using_glesv2 ? GL_RGBA : GL_RGB10_A2;
gl_pixel_type = GL_UNSIGNED_INT_2_10_10_10_REV_EXT;
es->is_opaque = false;
break;
case WL_SHM_FORMAT_XBGR2101010:
if (!gr->has_texture_type_2_10_10_10_rev) {
goto unsupported;
}
gs->shader_variant = SHADER_VARIANT_RGBX;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = using_glesv2 ? GL_RGBA : GL_RGB10_A2;
gl_pixel_type = GL_UNSIGNED_INT_2_10_10_10_REV_EXT;
es->is_opaque = true;
break;
case WL_SHM_FORMAT_ABGR16161616F:
if (!gr->gl_supports_color_transforms)
goto unsupported;
gs->shader_variant = SHADER_VARIANT_RGBA;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 8;
gl_format[0] = GL_RGBA16F;
gl_pixel_type = GL_HALF_FLOAT;
es->is_opaque = false;
break;
case WL_SHM_FORMAT_XBGR16161616F:
if (!gr->gl_supports_color_transforms)
goto unsupported;
gs->shader_variant = SHADER_VARIANT_RGBX;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 8;
gl_format[0] = GL_RGBA16F;
gl_pixel_type = GL_HALF_FLOAT;
es->is_opaque = true;
break;
case WL_SHM_FORMAT_ABGR16161616:
if (!gr->has_texture_norm16)
goto unsupported;
gs->shader_variant = SHADER_VARIANT_RGBA;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 8;
gl_format[0] = GL_RGBA16_EXT;
gl_pixel_type = GL_UNSIGNED_SHORT;
es->is_opaque = false;
break;
case WL_SHM_FORMAT_XBGR16161616:
if (!gr->has_texture_norm16)
goto unsupported;
gs->shader_variant = SHADER_VARIANT_RGBX;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 8;
gl_format[0] = GL_RGBA16_EXT;
gl_pixel_type = GL_UNSIGNED_SHORT;
es->is_opaque = true;
break;
#endif
case WL_SHM_FORMAT_YUV420:
gs->shader_variant = SHADER_VARIANT_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_variant = SHADER_VARIANT_Y_UV;
gl_format[0] = GL_R8_EXT;
gl_format[1] = GL_RG8_EXT;
} else {
gs->shader_variant = SHADER_VARIANT_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_variant = SHADER_VARIANT_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;
case WL_SHM_FORMAT_XYUV8888:
/*
* [31:0] X:Y:Cb:Cr 8:8:8:8 little endian
* a:b: g: r in SHADER_VARIANT_XYUV
*/
gs->shader_variant = SHADER_VARIANT_XYUV;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = GL_RGBA;
gl_pixel_type = GL_UNSIGNED_BYTE;
es->is_opaque = true;
break;
default:
unsupported:
weston_log("warning: unknown or unsupported 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->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->direct_display = false;
gs->surface = es;
ensure_textures(gs, GL_TEXTURE_2D, 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[5];
GLenum target;
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;
}
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_variant = SHADER_VARIANT_RGBA;
break;
case EGL_TEXTURE_EXTERNAL_WL:
num_planes = 1;
gs->shader_variant = SHADER_VARIANT_EXTERNAL;
break;
case EGL_TEXTURE_Y_UV_WL:
num_planes = 2;
gs->shader_variant = SHADER_VARIANT_Y_UV;
es->is_opaque = true;
break;
case EGL_TEXTURE_Y_U_V_WL:
num_planes = 3;
gs->shader_variant = SHADER_VARIANT_Y_U_V;
es->is_opaque = true;
break;
case EGL_TEXTURE_Y_XUXV_WL:
num_planes = 2;
gs->shader_variant = SHADER_VARIANT_Y_XUXV;
es->is_opaque = true;
break;
}
gs->num_images = num_planes;
target = gl_shader_texture_variant_get_target(gs->shader_variant);
ensure_textures(gs, target, num_planes);
for (i = 0; i < num_planes; i++) {
attribs[0] = EGL_WAYLAND_PLANE_WL;
attribs[1] = i;
attribs[2] = EGL_IMAGE_PRESERVED_KHR;
attribs[3] = EGL_TRUE;
attribs[4] = 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;
}
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(target, gs->textures[i]);
gr->image_target_texture_2d(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[52];
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;
attribs[atti++] = EGL_IMAGE_PRESERVED_KHR;
attribs[atti++] = EGL_TRUE;
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;
}
struct yuv_format_descriptor yuv_formats[] = {
{
.format = DRM_FORMAT_YUYV,
.input_planes = 1,
.output_planes = 2,
.texture_type = 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 = 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 = 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 = 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
}}
}, {
.format = DRM_FORMAT_XYUV8888,
.input_planes = 1,
.output_planes = 1,
.texture_type = TEXTURE_XYUV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_XBGR8888,
.plane_index = 0
}}
}
};
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 TEXTURE_Y_XUXV_WL:
image->shader_variant = SHADER_VARIANT_Y_XUXV;
break;
case TEXTURE_Y_UV_WL:
image->shader_variant = SHADER_VARIANT_Y_UV;
break;
case TEXTURE_Y_U_V_WL:
image->shader_variant = SHADER_VARIANT_Y_U_V;
break;
case TEXTURE_XYUV_WL:
image->shader_variant = SHADER_VARIANT_XYUV;
break;
default:
assert(false);
}
return true;
}
static void
gl_renderer_query_dmabuf_modifiers_full(struct gl_renderer *gr, int format,
uint64_t **modifiers,
unsigned **external_only,
int *num_modifiers);
static struct dmabuf_format*
dmabuf_format_create(struct gl_renderer *gr, uint32_t format)
{
struct dmabuf_format *dmabuf_format;
dmabuf_format = calloc(1, sizeof(struct dmabuf_format));
if (!dmabuf_format)
return NULL;
dmabuf_format->format = format;
gl_renderer_query_dmabuf_modifiers_full(gr, format,
&dmabuf_format->modifiers,
&dmabuf_format->external_only,
&dmabuf_format->num_modifiers);
if (dmabuf_format->num_modifiers == 0) {
free(dmabuf_format);
return NULL;
}
wl_list_insert(&gr->dmabuf_formats, &dmabuf_format->link);
return dmabuf_format;
}
static void
dmabuf_format_destroy(struct dmabuf_format *format)
{
free(format->modifiers);
free(format->external_only);
wl_list_remove(&format->link);
free(format);
}
static GLenum
choose_texture_target(struct gl_renderer *gr,
struct dmabuf_attributes *attributes)
{
struct dmabuf_format *tmp, *format = NULL;
wl_list_for_each(tmp, &gr->dmabuf_formats, link) {
if (tmp->format == attributes->format) {
format = tmp;
break;
}
}
if (!format)
format = dmabuf_format_create(gr, attributes->format);
if (format) {
int i;
for (i = 0; i < format->num_modifiers; ++i) {
if (format->modifiers[i] == attributes->modifier[0]) {
if(format->external_only[i])
return GL_TEXTURE_EXTERNAL_OES;
else
return GL_TEXTURE_2D;
}
}
}
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:
case DRM_FORMAT_XYUV8888:
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;
GLenum target;
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;
target = choose_texture_target(gr, &dmabuf->attributes);
switch (target) {
case GL_TEXTURE_2D:
image->shader_variant = SHADER_VARIANT_RGBA;
break;
default:
image->shader_variant = SHADER_VARIANT_EXTERNAL;
}
} else {
if (!import_yuv_dmabuf(gr, image)) {
dmabuf_image_destroy(image);
return NULL;
}
image->import_type = IMPORT_TYPE_GL_CONVERSION;
}
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,
DRM_FORMAT_XYUV8888,
};
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_full(struct gl_renderer *gr, int format,
uint64_t **modifiers,
unsigned **external_only,
int *num_modifiers)
{
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 (external_only) {
*external_only = calloc(num, sizeof(unsigned));
if (*external_only == NULL) {
*num_modifiers = 0;
free(*modifiers);
return;
}
}
if (!gr->query_dmabuf_modifiers(gr->egl_display, format,
num, *modifiers, external_only ?
*external_only : NULL, &num)) {
*num_modifiers = 0;
free(*modifiers);
if (external_only)
free(*external_only);
return;
}
*num_modifiers = 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);
gl_renderer_query_dmabuf_modifiers_full(gr, format, modifiers, NULL,
num_modifiers);
}
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
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;
GLenum target;
int i;
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;
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;
gs->y_inverted = buffer->y_inverted;
gs->direct_display = dmabuf->direct_display;
surface->is_opaque = dmabuf_is_opaque(dmabuf);
/*
* 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.
*/
if (dmabuf->direct_display)
return;
image = linux_dmabuf_buffer_get_user_data(dmabuf);
/* The dmabuf_image should have been created during the import */
assert(image != NULL);
gs->num_images = image->num_images;
for (i = 0; i < gs->num_images; ++i)
gs->images[i] = egl_image_ref(image->images[i]);
target = gl_shader_texture_variant_get_target(image->shader_variant);
ensure_textures(gs, target, gs->num_images);
for (i = 0; i < gs->num_images; ++i) {
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(target, gs->textures[i]);
gr->image_target_texture_2d(target, gs->images[i]->image);
}
gs->shader_variant = image->shader_variant;
}
static const struct weston_drm_format_array *
gl_renderer_get_supported_formats(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
return &gr->supported_formats;
}
static int
populate_supported_formats(struct weston_compositor *ec,
struct weston_drm_format_array *supported_formats)
{
struct weston_drm_format *fmt;
int *formats = NULL;
uint64_t *modifiers = NULL;
int num_formats, num_modifiers;
int i, j;
int ret = 0;
/* Use EGL_EXT_image_dma_buf_import_modifiers to query the
* list of formats/modifiers of the renderer. */
gl_renderer_query_dmabuf_formats(ec, &formats, &num_formats);
if (num_formats == 0)
return 0;
for (i = 0; i < num_formats; i++) {
fmt = weston_drm_format_array_add_format(supported_formats,
formats[i]);
if (!fmt) {
ret = -1;
goto out;
}
/* Always add DRM_FORMAT_MOD_INVALID, as EGL implementations
* support implicit modifiers. */
ret = weston_drm_format_add_modifier(fmt, DRM_FORMAT_MOD_INVALID);
if (ret < 0)
goto out;
gl_renderer_query_dmabuf_modifiers(ec, formats[i],
&modifiers, &num_modifiers);
if (num_modifiers == 0)
continue;
for (j = 0; j < num_modifiers; j++) {
/* Skip MOD_INVALID, as it has already been added. */
if (modifiers[j] == DRM_FORMAT_MOD_INVALID)
continue;
ret = weston_drm_format_add_modifier(fmt, modifiers[j]);
if (ret < 0) {
free(modifiers);
goto out;
}
}
free(modifiers);
}
out:
free(formats);
return ret;
}
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;
gs->direct_display = false;
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);
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_variant = SHADER_VARIANT_SOLID;
}
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
};
struct gl_shader_config sconf = {
.view_alpha = 1.0f,
.input_tex_filter = GL_NEAREST,
};
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;
int ret = -1;
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;
}
gl_shader_config_set_input_textures(&sconf, gs);
glActiveTexture(GL_TEXTURE0);
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);
goto out;
}
glViewport(0, 0, cw, ch);
glDisable(GL_BLEND);
if (gs->y_inverted)
ARRAY_COPY(sconf.projection.d, projmat_normal);
else
ARRAY_COPY(sconf.projection.d, projmat_yinvert);
sconf.projection.type = WESTON_MATRIX_TRANSFORM_SCALE |
WESTON_MATRIX_TRANSFORM_TRANSLATE;
if (!gl_renderer_use_program(gr, &sconf))
goto out;
/* 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);
ret = 0;
out:
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
return ret;
}
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->direct_display = false;
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;
}
void
gl_renderer_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);
gl_renderer_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);
gl_renderer_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;
struct gl_renderer *gr = get_renderer(output->compositor);
const struct weston_testsuite_quirks *quirks;
bool ret;
int i;
quirks = &output->compositor->test_data.test_quirks;
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;
if ((output->from_blend_to_output != NULL &&
output->from_blend_to_output_by_backend == false) ||
quirks->gl_force_full_redraw_of_shadow_fb) {
assert(gr->gl_supports_color_transforms);
ret = gl_fbo_texture_init(&go->shadow,
output->current_mode->width,
output->current_mode->height,
GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT);
if (ret) {
weston_log("Output %s uses 16F shadow.\n",
output->name);
} else {
weston_log("Output %s failed to create 16F shadow.\n",
output->name);
free(go);
return -1;
}
}
output->renderer_state = go;
return 0;
}
static int
gl_renderer_output_window_create(struct weston_output *output,
const struct gl_renderer_output_options *options)
{
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,
options->window_for_legacy,
options->window_for_platform,
options->drm_formats,
options->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 int
gl_renderer_output_pbuffer_create(struct weston_output *output,
const struct gl_renderer_pbuffer_options *options)
{
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_output_state *go;
EGLConfig pbuffer_config;
EGLSurface egl_surface;
EGLint value = 0;
int ret;
EGLint pbuffer_attribs[] = {
EGL_WIDTH, options->width,
EGL_HEIGHT, options->height,
EGL_NONE
};
pbuffer_config = gl_renderer_get_egl_config(gr, EGL_PBUFFER_BIT,
options->drm_formats,
options->drm_formats_count);
if (pbuffer_config == EGL_NO_CONFIG_KHR) {
weston_log("failed to choose EGL config for PbufferSurface\n");
return -1;
}
log_egl_config_info(gr->egl_display, pbuffer_config);
egl_surface = eglCreatePbufferSurface(gr->egl_display, pbuffer_config,
pbuffer_attribs);
if (egl_surface == EGL_NO_SURFACE) {
weston_log("failed to create egl surface\n");
gl_renderer_print_egl_error_state();
return -1;
}
eglSurfaceAttrib(gr->egl_display, egl_surface,
EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
if (!eglQuerySurface(gr->egl_display, egl_surface,
EGL_SWAP_BEHAVIOR, &value) ||
value != EGL_BUFFER_PRESERVED) {
weston_log("Error: pbuffer surface does not support EGL_BUFFER_PRESERVED, got 0x%x."
" Continuing anyway.\n", value);
}
ret = gl_renderer_output_create(output, egl_surface);
if (ret < 0) {
eglDestroySurface(gr->egl_display, egl_surface);
} else {
go = get_output_state(output);
go->swap_behavior_is_preserved = true;
}
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]);
if (shadow_exists(go))
gl_fbo_texture_fini(&go->shadow);
eglMakeCurrent(gr->egl_display,
gr->dummy_surface, gr->dummy_surface, gr->egl_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;
struct dmabuf_format *format, *next_format;
wl_signal_emit(&gr->destroy_signal, gr);
if (gr->has_bind_display)
gr->unbind_display(gr->egl_display, ec->wl_display);
gl_renderer_shader_list_destroy(gr);
if (gr->fallback_shader)
gl_shader_destroy(gr, gr->fallback_shader);
/* 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);
wl_list_for_each_safe(format, next_format, &gr->dmabuf_formats, link)
dmabuf_format_destroy(format);
weston_drm_format_array_fini(&gr->supported_formats);
if (gr->dummy_surface != EGL_NO_SURFACE)
weston_platform_destroy_egl_surface(gr->egl_display,
gr->dummy_surface);
eglTerminate(gr->egl_display);
eglReleaseThread();
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);
weston_log_scope_destroy(gr->shader_scope);
free(gr);
}
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 = gr->egl_config;
if (pbuffer_config == EGL_NO_CONFIG_KHR) {
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
create_default_dmabuf_feedback(struct weston_compositor *ec,
struct gl_renderer *gr)
{
struct stat dev_stat;
struct weston_dmabuf_feedback_tranche *tranche;
uint32_t flags = 0;
if (stat(gr->drm_device, &dev_stat) != 0) {
weston_log("%s: device disappeared, so we can't recover\n", __func__);
abort();
}
ec->default_dmabuf_feedback =
weston_dmabuf_feedback_create(dev_stat.st_rdev);
if (!ec->default_dmabuf_feedback)
return -1;
tranche =
weston_dmabuf_feedback_tranche_create(ec->default_dmabuf_feedback,
ec->dmabuf_feedback_format_table,
dev_stat.st_rdev, flags,
RENDERER_PREF);
if (!tranche) {
weston_dmabuf_feedback_destroy(ec->default_dmabuf_feedback);
ec->default_dmabuf_feedback = NULL;
return -1;
}
return 0;
}
static int
gl_renderer_display_create(struct weston_compositor *ec,
const struct gl_renderer_display_options *options)
{
struct gl_renderer *gr;
int ret;
gr = zalloc(sizeof *gr);
if (gr == NULL)
return -1;
gr->compositor = ec;
wl_list_init(&gr->shader_list);
gr->platform = options->egl_platform;
gr->shader_scope = gl_shader_scope_create(gr);
if (!gr->shader_scope)
goto fail;
if (gl_renderer_setup_egl_client_extensions(gr) < 0)
goto fail;
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;
if (gl_renderer_setup_egl_display(gr, options->egl_native_display) < 0)
goto fail;
weston_drm_format_array_init(&gr->supported_formats);
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 egl_surface_type = options->egl_surface_type;
if (!gr->has_surfaceless_context)
egl_surface_type |= EGL_PBUFFER_BIT;
gr->egl_config =
gl_renderer_get_egl_config(gr,
egl_surface_type,
options->drm_formats,
options->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.get_supported_formats = gl_renderer_get_supported_formats;
ret = populate_supported_formats(ec, &gr->supported_formats);
if (ret < 0)
goto fail_terminate;
if (gr->drm_device) {
/* We support dma-buf feedback only when the renderer
* exposes a DRM-device */
ec->dmabuf_feedback_format_table =
weston_dmabuf_feedback_format_table_create(&gr->supported_formats);
if (!ec->dmabuf_feedback_format_table)
goto fail_terminate;
ret = create_default_dmabuf_feedback(ec, gr);
if (ret < 0)
goto fail_feedback;
}
}
wl_list_init(&gr->dmabuf_formats);
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_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;
}
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_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_XYUV8888);
#if __BYTE_ORDER == __LITTLE_ENDIAN
if (gr->has_texture_type_2_10_10_10_rev) {
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_ABGR2101010);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_XBGR2101010);
}
if (gr->gl_supports_color_transforms) {
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_ABGR16161616F);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_XBGR16161616F);
}
if (gr->has_texture_norm16) {
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_ABGR16161616);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_XBGR16161616);
}
#endif
if (gr->gl_supports_color_transforms)
ec->capabilities |= WESTON_CAP_COLOR_OPS;
return 0;
fail_with_error:
gl_renderer_print_egl_error_state();
if (gr->drm_device) {
weston_dmabuf_feedback_destroy(ec->default_dmabuf_feedback);
ec->default_dmabuf_feedback = NULL;
}
fail_feedback:
if (gr->drm_device) {
weston_dmabuf_feedback_format_table_destroy(ec->dmabuf_feedback_format_table);
ec->dmabuf_feedback_format_table = NULL;
}
fail_terminate:
weston_drm_format_array_fini(&gr->supported_formats);
eglTerminate(gr->egl_display);
fail:
weston_log_scope_destroy(gr->shader_scope);
free(gr);
ec->renderer = NULL;
return -1;
}
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;
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) &&
major > 0 && minor >= 0) {
return gr_gl_version(major, minor);
}
weston_log("warning: failed to detect GLES version, defaulting to 2.0.\n");
return gr_gl_version(2, 0);
}
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();
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")) {
weston_log("GL_EXT_unpack_subimage not available.\n");
return -1;
}
if (gr->gl_version >= gr_gl_version(3, 0) ||
weston_check_egl_extension(extensions, "GL_EXT_texture_type_2_10_10_10_REV"))
gr->has_texture_type_2_10_10_10_rev = true;
if (weston_check_egl_extension(extensions, "GL_EXT_texture_norm16"))
gr->has_texture_norm16 = 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;
if (gr->gl_version >= gr_gl_version(3, 0) &&
weston_check_egl_extension(extensions, "GL_OES_texture_float_linear") &&
weston_check_egl_extension(extensions, "GL_EXT_color_buffer_half_float")) {
gr->gl_supports_color_transforms = true;
}
glActiveTexture(GL_TEXTURE0);
gr->fallback_shader = gl_renderer_create_fallback_shader(gr);
if (!gr->fallback_shader) {
weston_log("Error: compiling fallback shader failed.\n");
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);
weston_log("GL ES %d.%d - renderer features:\n",
gr_gl_version_major(gr->gl_version),
gr_gl_version_minor(gr->gl_version));
weston_log_continue(STAMP_SPACE "read-back format: %s\n",
ec->read_format == PIXMAN_a8r8g8b8 ? "BGRA" : "RGBA");
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_pbuffer_create = gl_renderer_output_pbuffer_create,
.output_destroy = gl_renderer_output_destroy,
.output_set_border = gl_renderer_output_set_border,
.create_fence_fd = gl_renderer_create_fence_fd,
};