Commit d2d834b990a6dfb172c14d4c83a904e4c09e016a
2021-02-25T15:21:59
KMSDRM: Add gamma support
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diff --git a/src/video/kmsdrm/SDL_kmsdrmsym.h b/src/video/kmsdrm/SDL_kmsdrmsym.h
index bb78677..ea3d8d1 100644
--- a/src/video/kmsdrm/SDL_kmsdrmsym.h
+++ b/src/video/kmsdrm/SDL_kmsdrmsym.h
@@ -59,6 +59,10 @@ SDL_KMSDRM_SYM(drmModeCrtcPtr,drmModeGetCrtc,(int fd, uint32_t crtcId))
SDL_KMSDRM_SYM(int,drmModeSetCrtc,(int fd, uint32_t crtcId, uint32_t bufferId,
uint32_t x, uint32_t y, uint32_t *connectors, int count,
drmModeModeInfoPtr mode))
+SDL_KMSDRM_SYM(int,drmModeCrtcGetGamma,(int fd, uint32_t crtc_id, uint32_t size,
+ uint16_t *red, uint16_t *green, uint16_t *blue))
+SDL_KMSDRM_SYM(int,drmModeCrtcSetGamma,(int fd, uint32_t crtc_id, uint32_t size,
+ uint16_t *red, uint16_t *green, uint16_t *blue))
SDL_KMSDRM_SYM(int,drmModeSetCursor,(int fd, uint32_t crtcId, uint32_t bo_handle,
uint32_t width, uint32_t height))
SDL_KMSDRM_SYM(int,drmModeSetCursor2,(int fd, uint32_t crtcId, uint32_t bo_handle,
diff --git a/src/video/kmsdrm/SDL_kmsdrmvideo.c b/src/video/kmsdrm/SDL_kmsdrmvideo.c
index 602f910..b0967d1 100644
--- a/src/video/kmsdrm/SDL_kmsdrmvideo.c
+++ b/src/video/kmsdrm/SDL_kmsdrmvideo.c
@@ -243,6 +243,8 @@ KMSDRM_CreateDevice(int devindex)
device->SetWindowPosition = KMSDRM_SetWindowPosition;
device->SetWindowSize = KMSDRM_SetWindowSize;
device->SetWindowFullscreen = KMSDRM_SetWindowFullscreen;
+ device->GetWindowGammaRamp = KMSDRM_GetWindowGammaRamp;
+ device->SetWindowGammaRamp = KMSDRM_SetWindowGammaRamp;
device->ShowWindow = KMSDRM_ShowWindow;
device->HideWindow = KMSDRM_HideWindow;
device->RaiseWindow = KMSDRM_RaiseWindow;
@@ -1349,6 +1351,34 @@ KMSDRM_ReconfigureWindow( _THIS, SDL_Window * window) {
}
int
+KMSDRM_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
+{
+ SDL_WindowData *windata = (SDL_WindowData*)window->driverdata;
+ SDL_VideoData *viddata = (SDL_VideoData*)windata->viddata;
+ SDL_VideoDisplay *disp = SDL_GetDisplayForWindow(window);
+ SDL_DisplayData* dispdata = (SDL_DisplayData*)disp->driverdata;
+ if (KMSDRM_drmModeCrtcGetGamma(viddata->drm_fd, dispdata->crtc->crtc_id, 256, &ramp[0*256], &ramp[1*256], &ramp[2*256]) == -1)
+ {
+ return SDL_SetError("Failed to get gamma ramp");
+ }
+ return 0;
+}
+
+int
+KMSDRM_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp)
+{
+ SDL_WindowData *windata = (SDL_WindowData*)window->driverdata;
+ SDL_VideoData *viddata = (SDL_VideoData*)windata->viddata;
+ SDL_VideoDisplay *disp = SDL_GetDisplayForWindow(window);
+ SDL_DisplayData* dispdata = (SDL_DisplayData*)disp->driverdata;
+ if (KMSDRM_drmModeCrtcSetGamma(viddata->drm_fd, dispdata->crtc->crtc_id, 256, &ramp[0*256], &ramp[1*256], &ramp[2*256]) == -1)
+ {
+ return SDL_SetError("Failed to set gamma ramp");
+ }
+ return 0;
+}
+
+int
KMSDRM_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)
{
return -1;
diff --git a/src/video/kmsdrm/SDL_kmsdrmvideo.h b/src/video/kmsdrm/SDL_kmsdrmvideo.h
index 31df3b9..713df9a 100644
--- a/src/video/kmsdrm/SDL_kmsdrmvideo.h
+++ b/src/video/kmsdrm/SDL_kmsdrmvideo.h
@@ -133,6 +133,8 @@ void KMSDRM_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon);
void KMSDRM_SetWindowPosition(_THIS, SDL_Window * window);
void KMSDRM_SetWindowSize(_THIS, SDL_Window * window);
void KMSDRM_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * _display, SDL_bool fullscreen);
+int KMSDRM_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp);
+int KMSDRM_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp);
void KMSDRM_ShowWindow(_THIS, SDL_Window * window);
void KMSDRM_HideWindow(_THIS, SDL_Window * window);
void KMSDRM_RaiseWindow(_THIS, SDL_Window * window);