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[KMS/DRM] Rewrite KMSDRM_LEGACY backend to accomodate Vulkan compatibility. Fix several bugs on that backend.

This commit is contained in:
Manuel Alfayate Corchete 2021-01-06 22:15:26 +01:00
parent 57a5c45372
commit 67e0b1dd4e
7 changed files with 1172 additions and 604 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

559
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_mouse.c
View File

@ -44,7 +44,32 @@ KMSDRM_LEGACY_CreateDefaultCursor(void)
return SDL_CreateCursor(default_cdata, default_cmask, DEFAULT_CWIDTH, DEFAULT_CHEIGHT, DEFAULT_CHOTX, DEFAULT_CHOTY);
}
/* Evaluate if a given cursor size is supported or not. Notably, current Intel gfx only support 64x64 and up. */
/* Converts a pixel from straight-alpha [AA, RR, GG, BB], which the SDL cursor surface has,
to premultiplied-alpha [AA. AA*RR, AA*GG, AA*BB].
These multiplications have to be done with floats instead of uint32_t's,
and the resulting values have to be converted to be relative to the 0-255 interval,
where 255 is 1.00 and anything between 0 and 255 is 0.xx. */
void legacy_alpha_premultiply_ARGB8888 (uint32_t *pixel) {
uint32_t A, R, G, B;
/* Component bytes extraction. */
A = (*pixel >> (3 << 3)) & 0xFF;
R = (*pixel >> (2 << 3)) & 0xFF;
G = (*pixel >> (1 << 3)) & 0xFF;
B = (*pixel >> (0 << 3)) & 0xFF;
/* Alpha pre-multiplication of each component. */
R = (float)A * ((float)R /255);
G = (float)A * ((float)G /255);
B = (float)A * ((float)B /255);
/* ARGB8888 pixel recomposition. */
(*pixel) = (((uint32_t)A << 24) | ((uint32_t)R << 16) | ((uint32_t)G << 8)) | ((uint32_t)B << 0);
}
/* Evaluate if a given cursor size is supported or not.
Notably, current Intel gfx only support 64x64 and up. */
static SDL_bool
KMSDRM_LEGACY_IsCursorSizeSupported (int w, int h, uint32_t bo_format) {
@ -54,7 +79,7 @@ KMSDRM_LEGACY_IsCursorSizeSupported (int w, int h, uint32_t bo_format) {
int ret;
uint32_t bo_handle;
struct gbm_bo *bo = KMSDRM_LEGACY_gbm_bo_create(viddata->gbm, w, h, bo_format,
struct gbm_bo *bo = KMSDRM_LEGACY_gbm_bo_create(viddata->gbm_dev, w, h, bo_format,
GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
if (!bo) {
@ -63,7 +88,7 @@ KMSDRM_LEGACY_IsCursorSizeSupported (int w, int h, uint32_t bo_format) {
}
bo_handle = KMSDRM_LEGACY_gbm_bo_get_handle(bo).u32;
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, dispdata->crtc_id, bo_handle, w, h);
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, dispdata->crtc->crtc_id, bo_handle, w, h);
if (ret) {
goto cleanup;
@ -80,328 +105,236 @@ cleanup:
return SDL_FALSE;
}
/* Create a cursor from a surface */
/* This simply gets the cursor soft-buffer ready.
We don't copy it to a GBO BO until ShowCursor() because the cusor GBM BO (living
in dispata) is destroyed and recreated when we recreate windows, etc. */
static SDL_Cursor *
KMSDRM_LEGACY_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
{
SDL_VideoDevice *dev = SDL_GetVideoDevice();
SDL_VideoData *viddata = ((SDL_VideoData *)dev->driverdata);
SDL_PixelFormat *pixlfmt = surface->format;
KMSDRM_LEGACY_CursorData *curdata;
SDL_Cursor *cursor;
SDL_bool cursor_supported = SDL_FALSE;
int i, ret, usable_cursor_w, usable_cursor_h;
uint32_t bo_format, bo_stride;
char *buffer = NULL;
size_t bufsize;
SDL_Cursor *cursor, *ret;
switch(pixlfmt->format) {
case SDL_PIXELFORMAT_RGB332:
bo_format = GBM_FORMAT_RGB332;
break;
case SDL_PIXELFORMAT_ARGB4444:
bo_format = GBM_FORMAT_ARGB4444;
break;
case SDL_PIXELFORMAT_RGBA4444:
bo_format = GBM_FORMAT_RGBA4444;
break;
case SDL_PIXELFORMAT_ABGR4444:
bo_format = GBM_FORMAT_ABGR4444;
break;
case SDL_PIXELFORMAT_BGRA4444:
bo_format = GBM_FORMAT_BGRA4444;
break;
case SDL_PIXELFORMAT_ARGB1555:
bo_format = GBM_FORMAT_ARGB1555;
break;
case SDL_PIXELFORMAT_RGBA5551:
bo_format = GBM_FORMAT_RGBA5551;
break;
case SDL_PIXELFORMAT_ABGR1555:
bo_format = GBM_FORMAT_ABGR1555;
break;
case SDL_PIXELFORMAT_BGRA5551:
bo_format = GBM_FORMAT_BGRA5551;
break;
case SDL_PIXELFORMAT_RGB565:
bo_format = GBM_FORMAT_RGB565;
break;
case SDL_PIXELFORMAT_BGR565:
bo_format = GBM_FORMAT_BGR565;
break;
case SDL_PIXELFORMAT_RGB888:
case SDL_PIXELFORMAT_RGB24:
bo_format = GBM_FORMAT_RGB888;
break;
case SDL_PIXELFORMAT_BGR888:
case SDL_PIXELFORMAT_BGR24:
bo_format = GBM_FORMAT_BGR888;
break;
case SDL_PIXELFORMAT_RGBX8888:
bo_format = GBM_FORMAT_RGBX8888;
break;
case SDL_PIXELFORMAT_BGRX8888:
bo_format = GBM_FORMAT_BGRX8888;
break;
case SDL_PIXELFORMAT_ARGB8888:
bo_format = GBM_FORMAT_ARGB8888;
break;
case SDL_PIXELFORMAT_RGBA8888:
bo_format = GBM_FORMAT_RGBA8888;
break;
case SDL_PIXELFORMAT_ABGR8888:
bo_format = GBM_FORMAT_ABGR8888;
break;
case SDL_PIXELFORMAT_BGRA8888:
bo_format = GBM_FORMAT_BGRA8888;
break;
case SDL_PIXELFORMAT_ARGB2101010:
bo_format = GBM_FORMAT_ARGB2101010;
break;
default:
SDL_SetError("Unsupported pixel format for cursor");
return NULL;
}
curdata = NULL;
ret = NULL;
if (!KMSDRM_LEGACY_gbm_device_is_format_supported(viddata->gbm, bo_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE)) {
SDL_SetError("Unsupported pixel format for cursor");
return NULL;
}
/* All code below assumes ARGB8888 format for the cursor surface,
like other backends do. Also, the GBM BO pixels have to be
alpha-premultiplied, but the SDL surface we receive has
straight-alpha pixels, so we always have to convert. */
SDL_assert(surface->format->format == SDL_PIXELFORMAT_ARGB8888);
SDL_assert(surface->pitch == surface->w * 4);
cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
if (!cursor) {
SDL_OutOfMemory();
return NULL;
goto cleanup;
}
curdata = (KMSDRM_LEGACY_CursorData *) SDL_calloc(1, sizeof(*curdata));
if (!curdata) {
SDL_OutOfMemory();
SDL_free(cursor);
return NULL;
}
/* We have to know beforehand if a cursor with the same size as the surface is supported.
* If it's not, we have to find an usable cursor size and use an intermediate and clean buffer.
* If we can't find a cursor size supported by the hardware, we won't go on trying to
* call SDL_SetCursor() later. */
usable_cursor_w = surface->w;
usable_cursor_h = surface->h;
while (usable_cursor_w <= MAX_CURSOR_W && usable_cursor_h <= MAX_CURSOR_H) {
if (KMSDRM_LEGACY_IsCursorSizeSupported(usable_cursor_w, usable_cursor_h, bo_format)) {
cursor_supported = SDL_TRUE;
break;
}
usable_cursor_w += usable_cursor_w;
usable_cursor_h += usable_cursor_h;
}
if (!cursor_supported) {
SDL_SetError("Could not find a cursor size supported by the kernel driver");
goto cleanup;
}
/* hox_x and hot_y are the coordinates of the "tip of the cursor" from it's base. */
curdata->hot_x = hot_x;
curdata->hot_y = hot_y;
curdata->w = usable_cursor_w;
curdata->h = usable_cursor_h;
curdata->w = surface->w;
curdata->h = surface->h;
curdata->buffer = NULL;
curdata->bo = KMSDRM_LEGACY_gbm_bo_create(viddata->gbm, usable_cursor_w, usable_cursor_h, bo_format,
GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
/* Configure the cursor buffer info.
This buffer has the original size of the cursor surface we are given. */
curdata->buffer_pitch = surface->pitch;
curdata->buffer_size = surface->pitch * surface->h;
curdata->buffer = (uint32_t*)SDL_malloc(curdata->buffer_size);
if (!curdata->bo) {
SDL_SetError("Could not create GBM cursor BO");
if (!curdata->buffer) {
SDL_OutOfMemory();
goto cleanup;
}
bo_stride = KMSDRM_LEGACY_gbm_bo_get_stride(curdata->bo);
bufsize = bo_stride * curdata->h;
if (surface->pitch != bo_stride) {
/* pitch doesn't match stride, must be copied to temp buffer */
buffer = SDL_malloc(bufsize);
if (!buffer) {
SDL_OutOfMemory();
if (SDL_MUSTLOCK(surface)) {
if (SDL_LockSurface(surface) < 0) {
/* Could not lock surface */
goto cleanup;
}
}
if (SDL_MUSTLOCK(surface)) {
if (SDL_LockSurface(surface) < 0) {
/* Could not lock surface */
goto cleanup;
}
}
/* Copy the surface pixels to the cursor buffer, for future use in ShowCursor() */
SDL_memcpy(curdata->buffer, surface->pixels, curdata->buffer_size);
/* Clean the whole temporary buffer */
SDL_memset(buffer, 0x00, bo_stride * curdata->h);
/* Copy to temporary buffer */
for (i = 0; i < surface->h; i++) {
SDL_memcpy(buffer + (i * bo_stride),
((char *)surface->pixels) + (i * surface->pitch),
surface->w * pixlfmt->BytesPerPixel);
}
if (SDL_MUSTLOCK(surface)) {
SDL_UnlockSurface(surface);
}
if (KMSDRM_LEGACY_gbm_bo_write(curdata->bo, buffer, bufsize)) {
SDL_SetError("Could not write to GBM cursor BO");
goto cleanup;
}
/* Free temporary buffer */
SDL_free(buffer);
buffer = NULL;
} else {
/* surface matches BO format */
if (SDL_MUSTLOCK(surface)) {
if (SDL_LockSurface(surface) < 0) {
/* Could not lock surface */
goto cleanup;
}
}
ret = KMSDRM_LEGACY_gbm_bo_write(curdata->bo, surface->pixels, bufsize);
if (SDL_MUSTLOCK(surface)) {
SDL_UnlockSurface(surface);
}
if (ret) {
SDL_SetError("Could not write to GBM cursor BO");
goto cleanup;
}
if (SDL_MUSTLOCK(surface)) {
SDL_UnlockSurface(surface);
}
cursor->driverdata = curdata;
return cursor;
ret = cursor;
cleanup:
if (buffer) {
SDL_free(buffer);
if (ret == NULL) {
if (curdata) {
if (curdata->buffer) {
SDL_free(curdata->buffer);
}
SDL_free(curdata);
}
if (cursor) {
SDL_free(cursor);
}
}
if (cursor) {
SDL_free(cursor);
}
if (curdata) {
if (curdata->bo) {
KMSDRM_LEGACY_gbm_bo_destroy(curdata->bo);
}
SDL_free(curdata);
}
return NULL;
return ret;
}
/* Show the specified cursor, or hide if cursor is NULL */
/* When we create a window, we have to test if we have to show the cursor,
and explicily do so if necessary.
This is because when we destroy a window, we take the cursor away from the
cursor plane, and destroy the cusror GBM BO. So we have to re-show it,
so to say. */
void
KMSDRM_LEGACY_InitCursor()
{
SDL_Mouse *mouse = NULL;
mouse = SDL_GetMouse();
if (!mouse) {
return;
}
if (!(mouse->cur_cursor)) {
return;
}
if (!(mouse->cursor_shown)) {
return;
}
KMSDRM_LEGACY_ShowCursor(mouse->cur_cursor);
}
/* Show the specified cursor, or hide if cursor is NULL. */
static int
KMSDRM_LEGACY_ShowCursor(SDL_Cursor * cursor)
{
SDL_VideoDevice *dev = SDL_GetVideoDevice();
SDL_VideoData *viddata = ((SDL_VideoData *)dev->driverdata);
SDL_VideoDevice *video_device = SDL_GetVideoDevice();
SDL_VideoData *viddata = ((SDL_VideoData *)video_device->driverdata);
SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
SDL_Mouse *mouse;
KMSDRM_LEGACY_CursorData *curdata;
SDL_VideoDisplay *display = NULL;
SDL_DisplayData *dispdata = NULL;
int ret;
uint32_t bo_handle;
size_t bo_stride;
size_t bufsize;
uint32_t *ready_buffer = NULL;
uint32_t pixel;
int i,j;
int ret;
mouse = SDL_GetMouse();
if (!mouse) {
return SDL_SetError("No mouse.");
}
if (mouse->focus) {
display = SDL_GetDisplayForWindow(mouse->focus);
if (display) {
dispdata = (SDL_DisplayData*) display->driverdata;
}
}
if (!cursor) {
/* Hide current cursor */
if (mouse->cur_cursor && mouse->cur_cursor->driverdata) {
curdata = (KMSDRM_LEGACY_CursorData *) mouse->cur_cursor->driverdata;
if (curdata->crtc_id != 0) {
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, curdata->crtc_id, 0, 0, 0);
if (ret) {
SDL_SetError("Could not hide current cursor with drmModeSetCursor().");
return ret;
}
/* Mark previous cursor as not-displayed */
curdata->crtc_id = 0;
return 0;
}
}
/* otherwise if possible, hide global cursor */
if (dispdata && dispdata->crtc_id != 0) {
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, dispdata->crtc_id, 0, 0, 0);
if (ret) {
SDL_SetError("Could not hide display's cursor with drmModeSetCursor().");
return ret;
}
return 0;
}
return SDL_SetError("Couldn't find cursor to hide.");
}
/* If cursor != NULL, show new cursor on display */
if (!display) {
return SDL_SetError("Could not get display for mouse.");
}
if (!dispdata) {
return SDL_SetError("Could not get display driverdata.");
}
curdata = (KMSDRM_LEGACY_CursorData *) cursor->driverdata;
if (!curdata || !curdata->bo) {
return SDL_SetError("Cursor not initialized properly.");
}
bo_handle = KMSDRM_LEGACY_gbm_bo_get_handle(curdata->bo).u32;
if (curdata->hot_x == 0 && curdata->hot_y == 0) {
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, dispdata->crtc_id, bo_handle,
curdata->w, curdata->h);
} else {
ret = KMSDRM_LEGACY_drmModeSetCursor2(viddata->drm_fd, dispdata->crtc_id, bo_handle,
curdata->w, curdata->h, curdata->hot_x, curdata->hot_y);
}
if (ret) {
SDL_SetError("drmModeSetCursor failed.");
/*********************************************************/
/* Hide cursor if it's NULL or it has no focus(=winwow). */
/*********************************************************/
if (!cursor || !mouse->focus) {
/* Hide the drm cursor with no more considerations because
SDL_VideoQuit() takes us here after disabling the mouse
so there is no mouse->cur_cursor by now. */
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd,
dispdata->crtc->crtc_id, 0, 0, 0);
if (ret) {
ret = SDL_SetError("Could not hide current cursor with drmModeSetCursor().");
}
return ret;
}
curdata->crtc_id = dispdata->crtc_id;
/************************************************/
/* If cursor != NULL, DO show cursor on display */
/************************************************/
if (!dispdata) {
return SDL_SetError("Could not get display driverdata.");
}
curdata = (KMSDRM_LEGACY_CursorData *) cursor->driverdata;
return 0;
if (!curdata || !dispdata->cursor_bo) {
return SDL_SetError("Cursor not initialized properly.");
}
/* Prepare a buffer we can dump to our GBM BO (different
size, alpha premultiplication...) */
bo_stride = KMSDRM_LEGACY_gbm_bo_get_stride(dispdata->cursor_bo);
bufsize = bo_stride * curdata->h;
ready_buffer = (uint32_t*)SDL_malloc(bufsize);
if (!ready_buffer) {
ret = SDL_OutOfMemory();
goto cleanup;
}
/* Clean the whole buffer we are preparing. */
SDL_memset(ready_buffer, 0x00, bo_stride * curdata->h);
/* Copy from the cursor buffer to a buffer that we can dump to the GBM BO,
pre-multiplying by alpha each pixel as we go. */
for (i = 0; i < curdata->h; i++) {
for (j = 0; j < curdata->w; j++) {
pixel = ((uint32_t*)curdata->buffer)[i * curdata->w + j];
legacy_alpha_premultiply_ARGB8888 (&pixel);
SDL_memcpy(ready_buffer + (i * dispdata->cursor_w) + j, &pixel, 4);
}
}
/* Dump the cursor buffer to our GBM BO. */
if (KMSDRM_LEGACY_gbm_bo_write(dispdata->cursor_bo, ready_buffer, bufsize)) {
ret = SDL_SetError("Could not write to GBM cursor BO");
goto cleanup;
}
/* Put the GBM BO buffer on screen using the DRM interface. */
bo_handle = KMSDRM_LEGACY_gbm_bo_get_handle(dispdata->cursor_bo).u32;
if (curdata->hot_x == 0 && curdata->hot_y == 0) {
ret = KMSDRM_LEGACY_drmModeSetCursor(viddata->drm_fd, dispdata->crtc->crtc_id,
bo_handle, curdata->w, curdata->h);
} else {
ret = KMSDRM_LEGACY_drmModeSetCursor2(viddata->drm_fd, dispdata->crtc->crtc_id,
bo_handle, curdata->w, curdata->h, curdata->hot_x, curdata->hot_y);
}
if (ret) {
ret = SDL_SetError("Failed to set DRM cursor.");
goto cleanup;
}
cleanup:
if (ready_buffer) {
SDL_free(ready_buffer);
}
return ret;
}
/* Free a window manager cursor */
/* We have destroyed the cursor by now, in KMSDRM_DestroyCursor.
This is only for freeing the SDL_cursor.*/
static void
KMSDRM_LEGACY_FreeCursor(SDL_Cursor * cursor)
{
KMSDRM_LEGACY_CursorData *curdata;
int drm_fd;
/* Even if the cursor is not ours, free it. */
if (cursor) {
curdata = (KMSDRM_LEGACY_CursorData *) cursor->driverdata;
if (curdata) {
if (curdata->bo) {
if (curdata->crtc_id != 0) {
drm_fd = KMSDRM_LEGACY_gbm_device_get_fd(KMSDRM_LEGACY_gbm_bo_get_device(curdata->bo));
/* Hide the cursor if previously shown on a CRTC */
KMSDRM_LEGACY_drmModeSetCursor(drm_fd, curdata->crtc_id, 0, 0, 0);
curdata->crtc_id = 0;
}
KMSDRM_LEGACY_gbm_bo_destroy(curdata->bo);
curdata->bo = NULL;
}
/* Free cursor buffer */
if (curdata->buffer) {
SDL_free(curdata->buffer);
curdata->buffer = NULL;
}
/* Free cursor itself */
if (cursor->driverdata) {
SDL_free(cursor->driverdata);
}
SDL_free(cursor);
@ -420,44 +353,57 @@ KMSDRM_LEGACY_WarpMouse(SDL_Window * window, int x, int y)
static int
KMSDRM_LEGACY_WarpMouseGlobal(int x, int y)
{
KMSDRM_LEGACY_CursorData *curdata;
SDL_Mouse *mouse = SDL_GetMouse();
SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
if (mouse && mouse->cur_cursor && mouse->cur_cursor->driverdata) {
/* Update internal mouse position. */
SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 0, x, y);
/* And now update the cursor graphic position on screen. */
curdata = (KMSDRM_LEGACY_CursorData *) mouse->cur_cursor->driverdata;
if (curdata->bo) {
if (dispdata->cursor_bo) {
int ret, drm_fd;
drm_fd = KMSDRM_LEGACY_gbm_device_get_fd(
KMSDRM_LEGACY_gbm_bo_get_device(dispdata->cursor_bo));
ret = KMSDRM_LEGACY_drmModeMoveCursor(drm_fd, dispdata->crtc->crtc_id, x, y);
if (curdata->crtc_id != 0) {
int ret, drm_fd;
drm_fd = KMSDRM_LEGACY_gbm_device_get_fd(KMSDRM_LEGACY_gbm_bo_get_device(curdata->bo));
ret = KMSDRM_LEGACY_drmModeMoveCursor(drm_fd, curdata->crtc_id, x, y);
if (ret) {
SDL_SetError("drmModeMoveCursor() failed.");
}
if (ret) {
SDL_SetError("drmModeMoveCursor() failed.");
}
return ret;
return ret;
} else {
return SDL_SetError("Cursor is not currently shown.");
}
} else {
return SDL_SetError("Cursor not initialized properly.");
}
} else {
return SDL_SetError("No mouse or current cursor.");
}
return 0;
}
/* UNDO WHAT WE DID IN KMSDRM_InitMouse(). */
void
KMSDRM_LEGACY_DeinitMouse(_THIS)
{
SDL_VideoDevice *video_device = SDL_GetVideoDevice();
SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
/* Destroy the curso GBM BO. */
if (video_device && dispdata->cursor_bo) {
KMSDRM_LEGACY_gbm_bo_destroy(dispdata->cursor_bo);
dispdata->cursor_bo = NULL;
}
}
/* Create cursor BO. */
void
KMSDRM_LEGACY_InitMouse(_THIS)
{
/* FIXME: Using UDEV it should be possible to scan all mice
* but there's no point in doing so as there's no multimice support...yet!
*/
SDL_VideoDevice *dev = SDL_GetVideoDevice();
SDL_VideoData *viddata = ((SDL_VideoData *)dev->driverdata);
SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
SDL_Mouse *mouse = SDL_GetMouse();
mouse->CreateCursor = KMSDRM_LEGACY_CreateCursor;
@ -467,7 +413,53 @@ KMSDRM_LEGACY_InitMouse(_THIS)
mouse->WarpMouse = KMSDRM_LEGACY_WarpMouse;
mouse->WarpMouseGlobal = KMSDRM_LEGACY_WarpMouseGlobal;
/************************************************/
/* Create the cursor GBM BO, if we haven't yet. */
/************************************************/
if (!dispdata->cursor_bo) {
if (!KMSDRM_LEGACY_gbm_device_is_format_supported(viddata->gbm_dev,
GBM_FORMAT_ARGB8888,
GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
{
SDL_SetError("Unsupported pixel format for cursor");
return;
}
if (KMSDRM_LEGACY_drmGetCap(viddata->drm_fd,
DRM_CAP_CURSOR_WIDTH, &dispdata->cursor_w) ||
KMSDRM_LEGACY_drmGetCap(viddata->drm_fd, DRM_CAP_CURSOR_HEIGHT,
&dispdata->cursor_h))
{
SDL_SetError("Could not get the recommended GBM cursor size");
goto cleanup;
}
if (dispdata->cursor_w == 0 || dispdata->cursor_h == 0) {
SDL_SetError("Could not get an usable GBM cursor size");
goto cleanup;
}
dispdata->cursor_bo = KMSDRM_LEGACY_gbm_bo_create(viddata->gbm_dev,
dispdata->cursor_w, dispdata->cursor_h,
GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
if (!dispdata->cursor_bo) {
SDL_SetError("Could not create GBM cursor BO");
goto cleanup;
}
}
/* SDL expects to set the default cursor on screen when we init the mouse. */
SDL_SetDefaultCursor(KMSDRM_LEGACY_CreateDefaultCursor());
return;
cleanup:
if (dispdata->cursor_bo) {
KMSDRM_LEGACY_gbm_bo_destroy(dispdata->cursor_bo);
dispdata->cursor_bo = NULL;
}
}
void
@ -481,15 +473,14 @@ static void
KMSDRM_LEGACY_MoveCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse = SDL_GetMouse();
KMSDRM_LEGACY_CursorData *curdata;
SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0);
int drm_fd, ret;
/* We must NOT call SDL_SendMouseMotion() here or we will enter recursivity!
That's why we move the cursor graphic ONLY. */
if (mouse && mouse->cur_cursor && mouse->cur_cursor->driverdata) {
curdata = (KMSDRM_LEGACY_CursorData *) mouse->cur_cursor->driverdata;
drm_fd = KMSDRM_LEGACY_gbm_device_get_fd(KMSDRM_LEGACY_gbm_bo_get_device(curdata->bo));
ret = KMSDRM_LEGACY_drmModeMoveCursor(drm_fd, curdata->crtc_id, mouse->x, mouse->y);
drm_fd = KMSDRM_LEGACY_gbm_device_get_fd(KMSDRM_LEGACY_gbm_bo_get_device(dispdata->cursor_bo));
ret = KMSDRM_LEGACY_drmModeMoveCursor(drm_fd, dispdata->crtc->crtc_id, mouse->x, mouse->y);
if (ret) {
SDL_SetError("drmModeMoveCursor() failed.");

13
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_mouse.h
View File

@ -31,15 +31,24 @@
typedef struct _KMSDRM_LEGACY_CursorData
{
struct gbm_bo *bo;
uint32_t crtc_id;
int hot_x, hot_y;
int w, h;
/* The buffer where we store the mouse bitmap ready to be used.
We get it ready and filled in CreateCursor(), and copy it
to a GBM BO in ShowCursor().*/
uint32_t *buffer;
size_t buffer_size;
size_t buffer_pitch;
} KMSDRM_LEGACY_CursorData;
extern void KMSDRM_LEGACY_InitMouse(_THIS);
extern void KMSDRM_LEGACY_DeinitMouse(_THIS);
extern void KMSDRM_LEGACY_QuitMouse(_THIS);
extern void KMSDRM_LEGACY_InitCursor();
#endif /* SDL_KMSDRM_LEGACY_mouse_h_ */
/* vi: set ts=4 sw=4 expandtab: */

115
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_opengles.c
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@ -35,10 +35,36 @@
/* EGL implementation of SDL OpenGL support */
void
KMSDRM_LEGACY_GLES_DefaultProfileConfig(_THIS, int *mask, int *major, int *minor)
{
/* if SDL was _also_ built with the Raspberry Pi driver (so we're
definitely a Pi device), default to GLES2. */
#if SDL_VIDEO_DRIVER_RPI
*mask = SDL_GL_CONTEXT_PROFILE_ES;
*major = 2;
*minor = 0;
#endif
}
int
KMSDRM_LEGACY_GLES_LoadLibrary(_THIS, const char *path) {
NativeDisplayType display = (NativeDisplayType)((SDL_VideoData *)_this->driverdata)->gbm;
/* Just pretend you do this here, but don't do it until KMSDRM_CreateWindow(),
where we do the same library load we would normally do here.
because this gets called by SDL_CreateWindow() before KMSDR_CreateWindow(),
so gbm dev isn't yet created when this is called, AND we can't alter the
call order in SDL_CreateWindow(). */
#if 0
NativeDisplayType display = (NativeDisplayType)((SDL_VideoData *)_this->driverdata)->gbm_dev;
return SDL_EGL_LoadLibrary(_this, path, display, EGL_PLATFORM_GBM_MESA);
#endif
return 0;
}
void
KMSDRM_LEGACY_GLES_UnloadLibrary(_THIS) {
/* As with KMSDRM_GLES_LoadLibrary(), we define our own "dummy" unloading function
so we manually unload the library whenever we want. */
}
SDL_EGL_CreateContext_impl(KMSDRM_LEGACY)
@ -81,16 +107,17 @@ KMSDRM_LEGACY_GLES_SwapWindow(_THIS, SDL_Window * window) {
}
/* Release the previous front buffer */
if (windata->curr_bo) {
KMSDRM_LEGACY_gbm_surface_release_buffer(windata->gs, windata->curr_bo);
/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Released GBM surface %p", (void *)windata->curr_bo); */
windata->curr_bo = NULL;
if (windata->bo) {
KMSDRM_LEGACY_gbm_surface_release_buffer(windata->gs, windata->bo);
windata->bo = NULL;
}
windata->curr_bo = windata->next_bo;
windata->bo = windata->next_bo;
/* Make the current back buffer the next front buffer */
if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, windata->egl_surface))) {
/* Mark a buffer to becume the next front buffer.
This won't happen until pagelip completes. */
if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display,
windata->egl_surface))) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed.");
return 0;
}
@ -100,46 +127,60 @@ KMSDRM_LEGACY_GLES_SwapWindow(_THIS, SDL_Window * window) {
if (!windata->next_bo) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer");
return 0;
/* } else {
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Locked GBM surface %p", (void *)windata->next_bo); */
}
/* Get the fb_info for the next front buffer. */
fb_info = KMSDRM_LEGACY_FBFromBO(_this, windata->next_bo);
if (!fb_info) {
return 0;
}
if (!windata->curr_bo) {
/* On the first swap, immediately present the new front buffer. Before
drmModePageFlip can be used the CRTC has to be configured to use
the current connector and mode with drmModeSetCrtc */
ret = KMSDRM_LEGACY_drmModeSetCrtc(viddata->drm_fd, dispdata->crtc_id, fb_info->fb_id, 0,
0, &dispdata->conn->connector_id, 1, &dispdata->mode);
if (!windata->bo) {
/***************************************************************************/
/* This is fundamental. */
/* We can't display an fb smaller than the resolution currently configured */
/* on the CRTC, because the CRTC would be scanning out of bounds. */
/* So instead of using drmModeSetCrtc() to tell CRTC to scan the fb */
/* directly, we use a plane (overlay or primary, doesn't mind if we */
/* activated the UNVERSAL PLANES cap) to scale the buffer to the */
/* resolution currently configured on the CRTC. */
/* */
/* We can't do this sooner, on CreateWindow(), because we don't have a */
/* framebuffer there yet, and DRM doesn't like 0 or -1 as the fb_id. */
/***************************************************************************/
ret = KMSDRM_LEGACY_drmModeSetPlane(viddata->drm_fd, dispdata->plane_id,
dispdata->crtc->crtc_id, fb_info->fb_id, 0,
windata->output_x, 0,
windata->output_w, windata->output_h,
0, 0,
windata->src_w << 16, windata->src_h << 16);
if (ret) {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not configure CRTC");
}
} else {
/* On subsequent swaps, queue the new front buffer to be flipped during
the next vertical blank */
ret = KMSDRM_LEGACY_drmModePageFlip(viddata->drm_fd, dispdata->crtc_id, fb_info->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, &windata->waiting_for_flip);
/* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModePageFlip(%d, %u, %u, DRM_MODE_PAGE_FLIP_EVENT, &windata->waiting_for_flip)",
viddata->drm_fd, displaydata->crtc_id, fb_info->fb_id); */
if (_this->egl_data->egl_swapinterval == 1) {
if (ret == 0) {
windata->waiting_for_flip = SDL_TRUE;
} else {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not queue pageflip: %d", ret);
}
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not set PLANE");
}
/* Wait immediately for vsync (as if we only had two buffers), for low input-lag scenarios.
Run your SDL2 program with "SDL_KMSDRM_LEGACY_DOUBLE_BUFFER=1 <program_name>" to enable this. */
if (_this->egl_data->egl_swapinterval == 1 && windata->double_buffer) {
KMSDRM_LEGACY_WaitPageFlip(_this, windata, -1);
}
return 0;
}
/* Issue pageflip on the next front buffer.
The pageflip will be done during the next vblank. */
ret = KMSDRM_LEGACY_drmModePageFlip(viddata->drm_fd, dispdata->crtc->crtc_id,
fb_info->fb_id, DRM_MODE_PAGE_FLIP_EVENT, &windata->waiting_for_flip);
if (_this->egl_data->egl_swapinterval == 1) {
if (ret == 0) {
windata->waiting_for_flip = SDL_TRUE;
} else {
SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not queue pageflip: %d", ret);
}
}
/* If we are in double-buffer mode, wait immediately for vsync
(as if we only had two buffers),
Run your SDL2 program with "SDL_KMSDRM_LEGACY_DOUBLE_BUFFER=1 <program_name>"
to enable this. */
if (_this->egl_data->egl_swapinterval == 1 && windata->double_buffer) {
KMSDRM_LEGACY_WaitPageFlip(_this, windata, -1);
}
return 0;

2
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_opengles.h
View File

@ -31,10 +31,10 @@
/* OpenGLES functions */
#define KMSDRM_LEGACY_GLES_GetAttribute SDL_EGL_GetAttribute
#define KMSDRM_LEGACY_GLES_GetProcAddress SDL_EGL_GetProcAddress
#define KMSDRM_LEGACY_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
#define KMSDRM_LEGACY_GLES_DeleteContext SDL_EGL_DeleteContext
#define KMSDRM_LEGACY_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
extern void KMSDRM_LEGACY_GLES_DefaultProfileConfig(_THIS, int *mask, int *major, int *minor);
extern int KMSDRM_LEGACY_GLES_SetSwapInterval(_THIS, int interval);
extern int KMSDRM_LEGACY_GLES_LoadLibrary(_THIS, const char *path);
extern SDL_GLContext KMSDRM_LEGACY_GLES_CreateContext(_THIS, SDL_Window * window);

19
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_sym.h
View File

@ -40,6 +40,7 @@ SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeFB,(drmModeFBPtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeCrtc,(drmModeCrtcPtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeConnector,(drmModeConnectorPtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeEncoder,(drmModeEncoderPtr ptr))
SDL_KMSDRM_LEGACY_SYM(int,drmGetCap,(int fd, uint64_t capability, uint64_t *value))
SDL_KMSDRM_LEGACY_SYM(drmModeResPtr,drmModeGetResources,(int fd))
SDL_KMSDRM_LEGACY_SYM(int,drmModeAddFB,(int fd, uint32_t width, uint32_t height, uint8_t depth,
uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
@ -62,6 +63,24 @@ SDL_KMSDRM_LEGACY_SYM(int,drmHandleEvent,(int fd,drmEventContextPtr evctx))
SDL_KMSDRM_LEGACY_SYM(int,drmModePageFlip,(int fd, uint32_t crtc_id, uint32_t fb_id,
uint32_t flags, void *user_data))
/* Planes stuff. */
SDL_KMSDRM_LEGACY_SYM(int,drmSetClientCap,(int fd, uint64_t capability, uint64_t value))
SDL_KMSDRM_LEGACY_SYM(drmModePlaneResPtr,drmModeGetPlaneResources,(int fd))
SDL_KMSDRM_LEGACY_SYM(drmModePlanePtr,drmModeGetPlane,(int fd, uint32_t plane_id))
SDL_KMSDRM_LEGACY_SYM(drmModeObjectPropertiesPtr,drmModeObjectGetProperties,(int fd,uint32_t object_id,uint32_t object_type))
SDL_KMSDRM_LEGACY_SYM(drmModePropertyPtr,drmModeGetProperty,(int fd, uint32_t propertyId))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeProperty,(drmModePropertyPtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreeObjectProperties,(drmModeObjectPropertiesPtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreePlane,(drmModePlanePtr ptr))
SDL_KMSDRM_LEGACY_SYM(void,drmModeFreePlaneResources,(drmModePlaneResPtr ptr))
SDL_KMSDRM_LEGACY_SYM(int,drmModeSetPlane,(int fd, uint32_t plane_id, uint32_t crtc_id,
uint32_t fb_id, uint32_t flags,
int32_t crtc_x, int32_t crtc_y,
uint32_t crtc_w, uint32_t crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h))
/* Planes stuff ends. */
SDL_KMSDRM_LEGACY_MODULE(GBM)
SDL_KMSDRM_LEGACY_SYM(int,gbm_device_get_fd,(struct gbm_device *gbm))

1021
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_video.c
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File diff suppressed because it is too large Load Diff

47
src/video/kmsdrm_legacy/SDL_kmsdrm_legacy_video.h
View File

@ -37,7 +37,12 @@ typedef struct SDL_VideoData
{
int devindex; /* device index that was passed on creation */
int drm_fd; /* DRM file desc */
struct gbm_device *gbm;
char devpath[32]; /* DRM dev path. */
struct gbm_device *gbm_dev;
SDL_bool video_init; /* Has VideoInit succeeded? */
SDL_bool vulkan_mode; /* Are we in Vulkan mode? One VK window is enough to be. */
SDL_Window **windows;
int max_windows;
@ -53,26 +58,53 @@ typedef struct SDL_DisplayModeData
typedef struct SDL_DisplayData
{
uint32_t crtc_id;
drmModeConnector *conn;
drmModeConnector *connector;
drmModeCrtc *crtc;
drmModeModeInfo mode;
drmModeCrtc *saved_crtc; /* CRTC to restore on quit */
} SDL_DisplayData;
drmModeModeInfo original_mode;
drmModeModeInfo preferred_mode;
drmModeCrtc *saved_crtc; /* CRTC to restore on quit */
uint32_t plane_id; /* ID of the primary plane used by the CRTC */
SDL_bool gbm_init;
/* DRM & GBM cursor stuff lives here, not in an SDL_Cursor's driverdata struct,
because setting/unsetting up these is done on window creation/destruction,
where we may not have an SDL_Cursor at all (so no SDL_Cursor driverdata).
There's only one cursor GBM BO because we only support one cursor. */
struct gbm_bo *cursor_bo;
uint64_t cursor_w, cursor_h;
SDL_bool modeset_pending;
} SDL_DisplayData;
typedef struct SDL_WindowData
{
SDL_VideoData *viddata;
/* SDL internals expect EGL surface to be here, and in KMSDRM the GBM surface is
what supports the EGL surface on the driver side, so all these surfaces and buffers
are expected to be here, in the struct pointed by SDL_Window driverdata pointer:
this one. So don't try to move these to dispdata! */
struct gbm_surface *gs;
struct gbm_bo *curr_bo;
struct gbm_bo *bo;
struct gbm_bo *next_bo;
struct gbm_bo *crtc_bo;
SDL_bool waiting_for_flip;
SDL_bool double_buffer;
int egl_surface_dirty;
EGLSurface egl_surface;
/* For scaling and AR correction. */
int32_t src_w;
int32_t src_h;
int32_t output_w;
int32_t output_h;
int32_t output_x;
} SDL_WindowData;
typedef struct KMSDRM_LEGACY_FBInfo
@ -101,6 +133,7 @@ void KMSDRM_LEGACY_SetWindowTitle(_THIS, SDL_Window * window);
void KMSDRM_LEGACY_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon);
void KMSDRM_LEGACY_SetWindowPosition(_THIS, SDL_Window * window);
void KMSDRM_LEGACY_SetWindowSize(_THIS, SDL_Window * window);
void KMSDRM_LEGACY_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * _display, SDL_bool fullscreen);
void KMSDRM_LEGACY_ShowWindow(_THIS, SDL_Window * window);
void KMSDRM_LEGACY_HideWindow(_THIS, SDL_Window * window);
void KMSDRM_LEGACY_RaiseWindow(_THIS, SDL_Window * window);