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#include <assert.h>
#include <drm_fourcc.h>
#include <wlr/render/allocator.h>
#include <wlr/render/drm_syncobj.h>
#include <wlr/render/swapchain.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/util/log.h>
#include "backend/drm/drm.h"
#include "backend/drm/fb.h"
#include "backend/drm/renderer.h"
#include "render/drm_format_set.h"
#include "render/pixel_format.h"
#include "render/wlr_renderer.h"
bool init_drm_renderer(struct wlr_drm_backend *drm,
struct wlr_drm_renderer *renderer) {
wlr_log(WLR_DEBUG, "Creating multi-GPU renderer");
renderer->wlr_rend = renderer_autocreate_with_drm_fd(drm->fd);
if (!renderer->wlr_rend) {
return false;
}
if (wlr_renderer_get_texture_formats(renderer->wlr_rend, WLR_BUFFER_CAP_DMABUF) == NULL) {
wlr_log(WLR_ERROR, "Renderer did not support importing DMA-BUFs");
wlr_renderer_destroy(renderer->wlr_rend);
renderer->wlr_rend = NULL;
return false;
}
renderer->allocator = wlr_allocator_autocreate(&drm->backend, renderer->wlr_rend);
if (renderer->allocator == NULL) {
wlr_renderer_destroy(renderer->wlr_rend);
renderer->wlr_rend = NULL;
return false;
}
return true;
}
void finish_drm_renderer(struct wlr_drm_renderer *renderer) {
if (!renderer) {
return;
}
wlr_allocator_destroy(renderer->allocator);
wlr_renderer_destroy(renderer->wlr_rend);
}
void finish_drm_surface(struct wlr_drm_surface *surf) {
if (!surf || !surf->renderer) {
return;
}
wlr_drm_syncobj_timeline_unref(surf->timeline);
wlr_swapchain_destroy(surf->swapchain);
*surf = (struct wlr_drm_surface){0};
}
bool init_drm_surface(struct wlr_drm_surface *surf,
struct wlr_drm_renderer *renderer, int width, int height,
const struct wlr_drm_format *drm_format) {
if (surf->swapchain != NULL && surf->swapchain->width == width &&
surf->swapchain->height == height) {
return true;
}
finish_drm_surface(surf);
surf->swapchain = wlr_swapchain_create(renderer->allocator, width, height,
drm_format);
if (surf->swapchain == NULL) {
wlr_log(WLR_ERROR, "Failed to create swapchain");
return false;
}
int drm_fd = wlr_renderer_get_drm_fd(renderer->wlr_rend);
if (renderer->wlr_rend->features.timeline && drm_fd >= 0) {
surf->timeline = wlr_drm_syncobj_timeline_create(drm_fd);
if (surf->timeline == NULL) {
finish_drm_surface(surf);
wlr_log(WLR_ERROR, "Failed to create DRM syncobj timeline");
return false;
}
}
surf->renderer = renderer;
return true;
}
struct wlr_buffer *drm_surface_blit(struct wlr_drm_surface *surf,
struct wlr_buffer *buffer,
struct wlr_drm_syncobj_timeline *wait_timeline, uint64_t wait_point) {
struct wlr_renderer *renderer = surf->renderer->wlr_rend;
if (surf->swapchain->width != buffer->width ||
surf->swapchain->height != buffer->height) {
wlr_log(WLR_ERROR, "Surface size doesn't match buffer size");
return NULL;
}
struct wlr_texture *tex = wlr_texture_from_buffer(renderer, buffer);
if (tex == NULL) {
wlr_log(WLR_ERROR, "Failed to import source buffer into multi-GPU renderer");
return NULL;
}
struct wlr_buffer *dst = wlr_swapchain_acquire(surf->swapchain);
if (!dst) {
wlr_log(WLR_ERROR, "Failed to acquire multi-GPU swapchain buffer");
goto error_tex;
}
surf->point++;
const struct wlr_buffer_pass_options pass_options = {
.signal_timeline = surf->timeline,
.signal_point = surf->point,
};
struct wlr_render_pass *pass = wlr_renderer_begin_buffer_pass(renderer, dst, &pass_options);
if (pass == NULL) {
wlr_log(WLR_ERROR, "Failed to begin render pass with multi-GPU destination buffer");
goto error_dst;
}
wlr_render_pass_add_texture(pass, &(struct wlr_render_texture_options){
.texture = tex,
.blend_mode = WLR_RENDER_BLEND_MODE_NONE,
.wait_timeline = wait_timeline,
.wait_point = wait_point,
});
if (!wlr_render_pass_submit(pass)) {
wlr_log(WLR_ERROR, "Failed to submit multi-GPU render pass");
goto error_dst;
}
wlr_texture_destroy(tex);
return dst;
error_dst:
wlr_buffer_unlock(dst);
error_tex:
wlr_texture_destroy(tex);
return NULL;
}
bool drm_plane_pick_render_format(struct wlr_drm_plane *plane,
struct wlr_drm_format *fmt, struct wlr_drm_renderer *renderer) {
const struct wlr_drm_format_set *render_formats =
wlr_renderer_get_render_formats(renderer->wlr_rend);
if (render_formats == NULL) {
wlr_log(WLR_ERROR, "Failed to get render formats");
return false;
}
const struct wlr_drm_format_set *plane_formats = &plane->formats;
uint32_t format = DRM_FORMAT_ARGB8888;
if (!wlr_drm_format_set_get(&plane->formats, format)) {
const struct wlr_pixel_format_info *format_info =
drm_get_pixel_format_info(format);
assert(format_info != NULL &&
format_info->opaque_substitute != DRM_FORMAT_INVALID);
format = format_info->opaque_substitute;
}
const struct wlr_drm_format *render_format =
wlr_drm_format_set_get(render_formats, format);
if (render_format == NULL) {
wlr_log(WLR_DEBUG, "Renderer doesn't support format 0x%"PRIX32, format);
return false;
}
const struct wlr_drm_format *plane_format =
wlr_drm_format_set_get(plane_formats, format);
if (plane_format == NULL) {
wlr_log(WLR_DEBUG, "Plane %"PRIu32" doesn't support format 0x%"PRIX32,
plane->id, format);
return false;
}
if (!wlr_drm_format_intersect(fmt, plane_format, render_format)) {
wlr_log(WLR_DEBUG, "Failed to intersect plane and render "
"modifiers for format 0x%"PRIX32, format);
return false;
}
if (fmt->len == 0) {
wlr_drm_format_finish(fmt);
wlr_log(WLR_DEBUG, "Failed to find matching plane and renderer modifiers");
return false;
}
return true;
}
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