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-rw-r--r--backend/drm/atomic.c53
-rw-r--r--backend/drm/drm.c24
-rw-r--r--backend/drm/legacy.c13
-rw-r--r--backend/drm/properties.c10
-rw-r--r--include/backend/drm/drm.h8
-rw-r--r--include/backend/drm/iface.h7
-rw-r--r--include/backend/drm/properties.h4
7 files changed, 110 insertions, 9 deletions
diff --git a/backend/drm/atomic.c b/backend/drm/atomic.c
index 54024d86..526b2731 100644
--- a/backend/drm/atomic.c
+++ b/backend/drm/atomic.c
@@ -1,3 +1,4 @@
+#include <stdlib.h>
#include <gbm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
@@ -195,9 +196,61 @@ static bool atomic_crtc_move_cursor(struct wlr_drm_backend *drm,
return atomic_end(drm->fd, &atom);
}
+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 drm_color_lut gamma[size];
+
+ // Fallback to legacy gamma interface when gamma properties are not available
+ // (can happen on older intel gpu's that support gamma but not degamma)
+ if (crtc->props.gamma_lut == 0) {
+ return legacy_iface.crtc_set_gamma(drm, crtc, r, g, b, size);
+ }
+
+ for (uint32_t i = 0; i < size; i++) {
+ gamma[i].red = r[i];
+ gamma[i].green = g[i];
+ gamma[i].blue = b[i];
+ }
+
+ if (crtc->gamma_lut != 0) {
+ drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
+ }
+
+ if (drmModeCreatePropertyBlob(drm->fd, gamma,
+ sizeof(struct drm_color_lut) * size, &crtc->gamma_lut)) {
+ wlr_log_errno(L_ERROR, "Unable to create property blob");
+ return false;
+ }
+
+ struct atomic atom;
+ atomic_begin(crtc, &atom);
+ atomic_add(&atom, crtc->id, crtc->props.gamma_lut, crtc->gamma_lut);
+ return atomic_end(drm->fd, &atom);
+}
+
+static uint32_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);
+ }
+
+ if (!wlr_drm_get_prop(drm->fd, crtc->id, crtc->props.gamma_lut_size,
+ &gamma_lut_size)) {
+ wlr_log(L_ERROR, "Unable to get gamma lut size");
+ return 0;
+ }
+
+ return (uint32_t)gamma_lut_size;
+}
+
const struct wlr_drm_interface atomic_iface = {
.conn_enable = atomic_conn_enable,
.crtc_pageflip = atomic_crtc_pageflip,
.crtc_set_cursor = atomic_crtc_set_cursor,
.crtc_move_cursor = atomic_crtc_move_cursor,
+ .crtc_set_gamma = atomic_crtc_set_gamma,
+ .crtc_get_gamma_size = atomic_crtc_get_gamma_size,
};
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index e1bf63db..56a78851 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -140,6 +140,7 @@ bool wlr_drm_resources_init(struct wlr_drm_backend *drm) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
crtc->id = res->crtcs[i];
+ crtc->legacy_crtc = drmModeGetCrtc(drm->fd, crtc->id);
wlr_drm_get_crtc_props(drm->fd, crtc->id, &crtc->props);
}
@@ -166,9 +167,13 @@ void wlr_drm_resources_free(struct wlr_drm_backend *drm) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
drmModeAtomicFree(crtc->atomic);
+ drmModeFreeCrtc(crtc->legacy_crtc);
if (crtc->mode_id) {
drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
}
+ if (crtc->gamma_lut) {
+ drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
+ }
}
for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *plane = &drm->planes[i];
@@ -228,13 +233,26 @@ static void wlr_drm_connector_set_gamma(struct wlr_output *output,
uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
- drmModeCrtcSetGamma(drm->fd, conn->crtc->id, size, r, g, b);
+ bool ok;
+
+ if (conn->crtc) {
+ ok = drm->iface->crtc_set_gamma(drm, conn->crtc, r, g, b, size);
+ if (ok) {
+ wlr_output_update_needs_swap(output);
+ }
+ }
+
}
static uint32_t wlr_drm_connector_get_gamma_size(struct wlr_output *output) {
struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
- drmModeCrtc *crtc = conn->old_crtc;
- return crtc ? crtc->gamma_size : 0;
+ struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
+
+ if (conn->crtc) {
+ return drm->iface->crtc_get_gamma_size(drm, conn->crtc);
+ }
+
+ return 0;
}
void wlr_drm_connector_start_renderer(struct wlr_drm_connector *conn) {
diff --git a/backend/drm/legacy.c b/backend/drm/legacy.c
index 61140cec..eec8c642 100644
--- a/backend/drm/legacy.c
+++ b/backend/drm/legacy.c
@@ -59,9 +59,22 @@ bool legacy_crtc_move_cursor(struct wlr_drm_backend *drm,
return !drmModeMoveCursor(drm->fd, crtc->id, x, y);
}
+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);
+}
+
+uint32_t legacy_crtc_get_gamma_size(struct wlr_drm_backend *drm,
+ struct wlr_drm_crtc *crtc) {
+ return crtc->legacy_crtc->gamma_size;
+}
+
const struct wlr_drm_interface legacy_iface = {
.conn_enable = legacy_conn_enable,
.crtc_pageflip = legacy_crtc_pageflip,
.crtc_set_cursor = legacy_crtc_set_cursor,
.crtc_move_cursor = legacy_crtc_move_cursor,
+ .crtc_set_gamma = legacy_crtc_set_gamma,
+ .crtc_get_gamma_size = legacy_crtc_get_gamma_size,
};
diff --git a/backend/drm/properties.c b/backend/drm/properties.c
index 5bec3243..153e845e 100644
--- a/backend/drm/properties.c
+++ b/backend/drm/properties.c
@@ -27,10 +27,12 @@ static const struct prop_info connector_info[] = {
static const struct prop_info crtc_info[] = {
#define INDEX(name) (offsetof(union wlr_drm_crtc_props, name) / sizeof(uint32_t))
- { "ACTIVE", INDEX(active) },
- { "MODE_ID", INDEX(mode_id) },
- { "rotation", INDEX(rotation) },
- { "scaling mode", INDEX(scaling_mode) },
+ { "ACTIVE", INDEX(active) },
+ { "GAMMA_LUT", INDEX(gamma_lut) },
+ { "GAMMA_LUT_SIZE", INDEX(gamma_lut_size) },
+ { "MODE_ID", INDEX(mode_id) },
+ { "rotation", INDEX(rotation) },
+ { "scaling mode", INDEX(scaling_mode) },
#undef INDEX
};
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index af472ede..12530da6 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -39,9 +39,15 @@ struct wlr_drm_plane {
struct wlr_drm_crtc {
uint32_t id;
- uint32_t mode_id; // atomic modesetting only
+
+ // Atomic modesetting only
+ uint32_t mode_id;
+ uint32_t gamma_lut;
drmModeAtomicReq *atomic;
+ // Legacy only
+ drmModeCrtc *legacy_crtc;
+
union {
struct {
struct wlr_drm_plane *overlay;
diff --git a/include/backend/drm/iface.h b/include/backend/drm/iface.h
index 4a5d2e9d..15cdf1ab 100644
--- a/include/backend/drm/iface.h
+++ b/include/backend/drm/iface.h
@@ -27,6 +27,13 @@ struct wlr_drm_interface {
// Move the cursor on crtc
bool (*crtc_move_cursor)(struct wlr_drm_backend *drm,
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);
+ // Get the gamma lut size of a crtc
+ uint32_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
+ struct wlr_drm_crtc *crtc);
};
extern const struct wlr_drm_interface atomic_iface;
diff --git a/include/backend/drm/properties.h b/include/backend/drm/properties.h
index 7de386ea..3cf8cc87 100644
--- a/include/backend/drm/properties.h
+++ b/include/backend/drm/properties.h
@@ -32,8 +32,10 @@ union wlr_drm_crtc_props {
uint32_t active;
uint32_t mode_id;
+ uint32_t gamma_lut;
+ uint32_t gamma_lut_size;
};
- uint32_t props[4];
+ uint32_t props[6];
};
union wlr_drm_plane_props {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:32:04 +0000