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Merge pull request #1277 from emersion/reset-gamma

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backend/drm: reset gamma table on VT switch
master
Scott Anderson 6 years ago committed by GitHub
parent 1dd523c34c e88db9a3fb
commit 43af104fa3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 76 additions and 42 deletions
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15
backend/drm/atomic.c
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@ -200,14 +200,14 @@ static bool atomic_crtc_move_cursor(struct wlr_drm_backend *drm,
}
static bool atomic_crtc_set_gamma(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, uint16_t *r, uint16_t *g, uint16_t *b,
uint32_t size) {
struct wlr_drm_crtc *crtc, size_t size,
uint16_t *r, uint16_t *g, uint16_t *b) {
// Fallback to legacy gamma interface when gamma properties are not available
// (can happen on older intel gpu's that support gamma but not degamma)
// TEMP: This is broken on AMDGPU. Always fallback to legacy until they get
// it fixed. Ref https://bugs.freedesktop.org/show_bug.cgi?id=107459
if (crtc->props.gamma_lut == 0 || true) {
return legacy_iface.crtc_set_gamma(drm, crtc, r, g, b, size);
return legacy_iface.crtc_set_gamma(drm, crtc, size, r, g, b);
}
struct drm_color_lut *gamma = malloc(size * sizeof(struct drm_color_lut));
@ -216,7 +216,7 @@ static bool atomic_crtc_set_gamma(struct wlr_drm_backend *drm,
return false;
}
for (uint32_t i = 0; i < size; i++) {
for (size_t i = 0; i < size; i++) {
gamma[i].red = r[i];
gamma[i].green = g[i];
gamma[i].blue = b[i];
@ -240,21 +240,20 @@ static bool atomic_crtc_set_gamma(struct wlr_drm_backend *drm,
return atomic_end(drm->fd, &atom);
}
static uint32_t atomic_crtc_get_gamma_size(struct wlr_drm_backend *drm,
static size_t atomic_crtc_get_gamma_size(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc) {
uint64_t gamma_lut_size;
if (crtc->props.gamma_lut_size == 0) {
return legacy_iface.crtc_get_gamma_size(drm, crtc);
}
uint64_t gamma_lut_size;
if (!get_drm_prop(drm->fd, crtc->id, crtc->props.gamma_lut_size,
&gamma_lut_size)) {
wlr_log(WLR_ERROR, "Unable to get gamma lut size");
return 0;
}
return (uint32_t)gamma_lut_size;
return (size_t)gamma_lut_size;
}
const struct wlr_drm_interface atomic_iface = {

10
backend/drm/backend.c
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@ -101,6 +101,16 @@ static void session_signal(struct wl_listener *listener, void *data) {
(plane && plane->cursor_enabled) ? plane->cursor_bo : NULL);
drm->iface->crtc_move_cursor(drm, conn->crtc, conn->cursor_x,
conn->cursor_y);
if (conn->crtc->gamma_table != NULL) {
size_t size = conn->crtc->gamma_table_size;
uint16_t *r = conn->crtc->gamma_table;
uint16_t *g = conn->crtc->gamma_table + size;
uint16_t *b = conn->crtc->gamma_table + 2 * size;
drm->iface->crtc_set_gamma(drm, conn->crtc, size, r, g, b);
} else {
set_drm_connector_gamma(&conn->output, 0, NULL, NULL, NULL);
}
}
} else {
wlr_log(WLR_INFO, "DRM fd paused");

48
backend/drm/drm.c
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@ -193,6 +193,7 @@ void finish_drm_resources(struct wlr_drm_backend *drm) {
if (crtc->gamma_lut) {
drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
}
free(crtc->gamma_table);
}
for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *plane = &drm->planes[i];
@ -251,7 +252,7 @@ static bool drm_connector_swap_buffers(struct wlr_output *output,
return true;
}
static void fill_empty_gamma_table(uint32_t size,
static void fill_empty_gamma_table(size_t size,
uint16_t *r, uint16_t *g, uint16_t *b) {
for (uint32_t i = 0; i < size; ++i) {
uint16_t val = (uint32_t)0xffff * i / (size - 1);
@ -259,7 +260,7 @@ static void fill_empty_gamma_table(uint32_t size,
}
}
static uint32_t drm_connector_get_gamma_size(struct wlr_output *output) {
static size_t drm_connector_get_gamma_size(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
@ -270,8 +271,8 @@ static uint32_t drm_connector_get_gamma_size(struct wlr_output *output) {
return 0;
}
static bool drm_connector_set_gamma(struct wlr_output *output,
uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b) {
bool set_drm_connector_gamma(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
@ -279,25 +280,42 @@ static bool drm_connector_set_gamma(struct wlr_output *output,
return false;
}
uint16_t *reset_table = NULL;
bool reset = false;
if (size == 0) {
reset = true;
size = drm_connector_get_gamma_size(output);
reset_table = malloc(3 * size * sizeof(uint16_t));
if (reset_table == NULL) {
if (size == 0) {
return false;
}
}
uint16_t *gamma_table = malloc(3 * size * sizeof(uint16_t));
if (gamma_table == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate gamma table");
return false;
}
r = reset_table;
g = reset_table + size;
b = reset_table + 2 * size;
fill_empty_gamma_table(size, r, g, b);
uint16_t *_r = gamma_table;
uint16_t *_g = gamma_table + size;
uint16_t *_b = gamma_table + 2 * size;
if (reset) {
fill_empty_gamma_table(size, _r, _g, _b);
} else {
memcpy(_r, r, size * sizeof(uint16_t));
memcpy(_g, g, size * sizeof(uint16_t));
memcpy(_b, b, size * sizeof(uint16_t));
}
bool ok = drm->iface->crtc_set_gamma(drm, conn->crtc, r, g, b, size);
bool ok = drm->iface->crtc_set_gamma(drm, conn->crtc, size, _r, _g, _b);
if (ok) {
wlr_output_update_needs_swap(output);
free(conn->crtc->gamma_table);
conn->crtc->gamma_table = gamma_table;
conn->crtc->gamma_table_size = size;
} else {
free(gamma_table);
}
free(reset_table);
return ok;
}
@ -724,7 +742,7 @@ static const struct wlr_output_impl output_impl = {
.destroy = drm_connector_destroy,
.make_current = drm_connector_make_current,
.swap_buffers = drm_connector_swap_buffers,
.set_gamma = drm_connector_set_gamma,
.set_gamma = set_drm_connector_gamma,
.get_gamma_size = drm_connector_get_gamma_size,
.export_dmabuf = drm_connector_export_dmabuf,
};
@ -759,6 +777,8 @@ static void dealloc_crtc(struct wlr_drm_connector *conn) {
wlr_log(WLR_DEBUG, "De-allocating CRTC %zu for output '%s'",
conn->crtc - drm->crtcs, conn->output.name);
set_drm_connector_gamma(&conn->output, 0, NULL, NULL, NULL);
for (size_t type = 0; type < 3; ++type) {
struct wlr_drm_plane *plane = conn->crtc->planes[type];
if (plane == NULL) {

10
backend/drm/legacy.c
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@ -63,14 +63,14 @@ bool legacy_crtc_move_cursor(struct wlr_drm_backend *drm,
}
bool legacy_crtc_set_gamma(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, uint16_t *r, uint16_t *g, uint16_t *b,
uint32_t size) {
return !drmModeCrtcSetGamma(drm->fd, crtc->id, size, r, g, b);
struct wlr_drm_crtc *crtc, size_t size,
uint16_t *r, uint16_t *g, uint16_t *b) {
return !drmModeCrtcSetGamma(drm->fd, crtc->id, (uint32_t)size, r, g, b);
}
uint32_t legacy_crtc_get_gamma_size(struct wlr_drm_backend *drm,
size_t legacy_crtc_get_gamma_size(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc) {
return crtc->legacy_crtc->gamma_size;
return (size_t)crtc->legacy_crtc->gamma_size;
}
const struct wlr_drm_interface legacy_iface = {

5
include/backend/drm/drm.h
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@ -57,6 +57,9 @@ struct wlr_drm_crtc {
union wlr_drm_crtc_props props;
struct wl_list connectors;
uint16_t *gamma_table;
size_t gamma_table_size;
};
struct wlr_drm_backend {
@ -151,5 +154,7 @@ void restore_drm_outputs(struct wlr_drm_backend *drm);
void scan_drm_connectors(struct wlr_drm_backend *state);
int handle_drm_event(int fd, uint32_t mask, void *data);
bool enable_drm_connector(struct wlr_output *output, bool enable);
bool set_drm_connector_gamma(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b);
#endif

6
include/backend/drm/iface.h
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@ -28,10 +28,10 @@ struct wlr_drm_interface {
struct wlr_drm_crtc *crtc, int x, int y);
// Set the gamma lut on crtc
bool (*crtc_set_gamma)(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, uint16_t *r, uint16_t *g, uint16_t *b,
uint32_t size);
struct wlr_drm_crtc *crtc, size_t size,
uint16_t *r, uint16_t *g, uint16_t *b);
// Get the gamma lut size of a crtc
uint32_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
size_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc);
};

6
include/wlr/interfaces/wlr_output.h
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@ -28,9 +28,9 @@ struct wlr_output_impl {
void (*destroy)(struct wlr_output *output);
bool (*make_current)(struct wlr_output *output, int *buffer_age);
bool (*swap_buffers)(struct wlr_output *output, pixman_region32_t *damage);
bool (*set_gamma)(struct wlr_output *output,
uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b);
uint32_t (*get_gamma_size)(struct wlr_output *output);
bool (*set_gamma)(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b);
size_t (*get_gamma_size)(struct wlr_output *output);
bool (*export_dmabuf)(struct wlr_output *output,
struct wlr_dmabuf_attributes *attribs);
};

6
include/wlr/types/wlr_output.h
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@ -182,7 +182,7 @@ void wlr_output_schedule_frame(struct wlr_output *output);
/**
* Returns the maximum length of each gamma ramp, or 0 if unsupported.
*/
uint32_t wlr_output_get_gamma_size(struct wlr_output *output);
size_t wlr_output_get_gamma_size(struct wlr_output *output);
/**
* Sets the gamma table for this output. `r`, `g` and `b` are gamma ramps for
* red, green and blue. `size` is the length of the ramps and must not exceed
@ -190,8 +190,8 @@ uint32_t wlr_output_get_gamma_size(struct wlr_output *output);
*
* Providing zero-sized ramps resets the gamma table.
*/
bool wlr_output_set_gamma(struct wlr_output *output,
uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b);
bool wlr_output_set_gamma(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b);
bool wlr_output_export_dmabuf(struct wlr_output *output,
struct wlr_dmabuf_attributes *attribs);
void wlr_output_set_fullscreen_surface(struct wlr_output *output,

6
types/wlr_output.c
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@ -560,15 +560,15 @@ void wlr_output_schedule_frame(struct wlr_output *output) {
wl_event_loop_add_idle(ev, schedule_frame_handle_idle_timer, output);
}
bool wlr_output_set_gamma(struct wlr_output *output, uint32_t size,
uint16_t *r, uint16_t *g, uint16_t *b) {
bool wlr_output_set_gamma(struct wlr_output *output, size_t size,
const uint16_t *r, const uint16_t *g, const uint16_t *b) {
if (!output->impl->set_gamma) {
return false;
}
return output->impl->set_gamma(output, size, r, g, b);
}
uint32_t wlr_output_get_gamma_size(struct wlr_output *output) {
size_t wlr_output_get_gamma_size(struct wlr_output *output) {
if (!output->impl->get_gamma_size) {
return 0;
}

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