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Atomic modesetting

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Scott Anderson 2017-08-09 20:43:01 +12:00 • committed by Drew DeVault
parent 913829e381
commit af67966d92
11 changed files with 350 additions and 72 deletions
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36
backend/drm/drm-util.c
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@ -2,7 +2,9 @@
#include <string.h>
#include <drm.h>
#include <drm_mode.h>
#include <gbm.h>
#include "backend/drm-util.h"
#include <wlr/util/log.h>
int32_t calculate_refresh_rate(drmModeModeInfo *mode) {
int32_t refresh = (mode->clock * 1000000LL / mode->htotal +
@ -133,6 +135,40 @@ const char *conn_get_name(uint32_t type_id) {
}
}
static void free_fb(struct gbm_bo *bo, void *data) {
uint32_t id = (uintptr_t)data;
if (id) {
struct gbm_device *gbm = gbm_bo_get_device(bo);
drmModeRmFB(gbm_device_get_fd(gbm), id);
}
}
uint32_t get_fb_for_bo(struct gbm_bo *bo) {
uint32_t id = (uintptr_t)gbm_bo_get_user_data(bo);
if (id) {
return id;
}
struct gbm_device *gbm = gbm_bo_get_device(bo);
int fd = gbm_device_get_fd(gbm);
uint32_t width = gbm_bo_get_width(bo);
uint32_t height = gbm_bo_get_height(bo);
uint32_t handles[4] = {gbm_bo_get_handle(bo).u32};
uint32_t pitches[4] = {gbm_bo_get_stride(bo)};
uint32_t offsets[4] = {gbm_bo_get_offset(bo, 0)};
uint32_t format = gbm_bo_get_format(bo);
if (drmModeAddFB2(fd, width, height, format, handles, pitches, offsets, &id, 0)) {
wlr_log_errno(L_ERROR, "Unable to add DRM framebuffer");
}
gbm_bo_set_user_data(bo, (void *)(uintptr_t)id, free_fb);
return id;
}
static inline bool is_taken(size_t n, const uint32_t arr[static n], uint32_t key) {
for (size_t i = 0; i < n; ++i) {
if (arr[i] == key) {