[PATCH 04/36] dix: introduce gpu screens. (v3)
Dave Airlie
airlied at gmail.com
Mon Jul 2 03:12:57 PDT 2012
From: Dave Airlie <airlied at redhat.com>
This patch introduces gpu screens into screenInfo. It adds interfaces
for adding and removing gpu screens, along with adding private fixup,
block handler support, and scratch pixmap init.
GPU screens have a myNum that is offset by GPU_SCREEN_OFFSET (256),
this is used for logging etc.
v2: no glyph pictures for GPU screens for now.
v3: introduce MAXGPUSCREENS, fix return value check
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
dix/dispatch.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++--
dix/dixutils.c | 6 ++++
dix/main.c | 15 ++++++++++
dix/privates.c | 5 ++++
include/misc.h | 4 +++
include/screenint.h | 9 ++++++
include/scrnintstr.h | 4 +++
render/glyph.c | 2 ++
8 files changed, 118 insertions(+), 2 deletions(-)
diff --git a/dix/dispatch.c b/dix/dispatch.c
index 34d82f4..b0fc531 100644
--- a/dix/dispatch.c
+++ b/dix/dispatch.c
@@ -3724,7 +3724,7 @@ with its screen number, a pointer to its ScreenRec, argc, and argv.
*/
-static int init_screen(ScreenPtr pScreen, int i)
+static int init_screen(ScreenPtr pScreen, int i, Bool gpu)
{
int scanlinepad, format, depth, bitsPerPixel, j, k;
@@ -3732,6 +3732,10 @@ static int init_screen(ScreenPtr pScreen, int i)
return -1;
}
pScreen->myNum = i;
+ if (gpu) {
+ pScreen->myNum += GPU_SCREEN_OFFSET;
+ pScreen->isGPU = TRUE;
+ }
pScreen->totalPixmapSize = 0; /* computed in CreateScratchPixmapForScreen */
pScreen->ClipNotify = 0; /* for R4 ddx compatibility */
pScreen->CreateScreenResources = 0;
@@ -3788,7 +3792,7 @@ AddScreen(Bool (*pfnInit) (ScreenPtr /*pScreen */ ,
if (!pScreen)
return -1;
- ret = init_screen(pScreen, i);
+ ret = init_screen(pScreen, i, FALSE);
if (ret != 0) {
free(pScreen);
return ret;
@@ -3817,3 +3821,70 @@ AddScreen(Bool (*pfnInit) (ScreenPtr /*pScreen */ ,
return i;
}
+
+int
+AddGPUScreen(Bool (*pfnInit) (ScreenPtr /*pScreen */ ,
+ int /*argc */ ,
+ char ** /*argv */
+ ),
+ int argc, char **argv)
+{
+ int i;
+ ScreenPtr pScreen;
+ Bool ret;
+
+ i = screenInfo.numGPUScreens;
+ if (i == MAXGPUSCREENS)
+ return -1;
+
+ pScreen = (ScreenPtr) calloc(1, sizeof(ScreenRec));
+ if (!pScreen)
+ return -1;
+
+ ret = init_screen(pScreen, i, TRUE);
+ if (ret != 0) {
+ free(pScreen);
+ return ret;
+ }
+
+ /* This is where screen specific stuff gets initialized. Load the
+ screen structure, call the hardware, whatever.
+ This is also where the default colormap should be allocated and
+ also pixel values for blackPixel, whitePixel, and the cursor
+ Note that InitScreen is NOT allowed to modify argc, argv, or
+ any of the strings pointed to by argv. They may be passed to
+ multiple screens.
+ */
+ screenInfo.gpuscreens[i] = pScreen;
+ screenInfo.numGPUScreens++;
+ if (!(*pfnInit) (pScreen, argc, argv)) {
+ dixFreePrivates(pScreen->devPrivates, PRIVATE_SCREEN);
+ free(pScreen);
+ screenInfo.numGPUScreens--;
+ return -1;
+ }
+
+ update_desktop_dimensions();
+
+ dixRegisterScreenPrivateKey(&cursorScreenDevPriv, pScreen, PRIVATE_CURSOR,
+ 0);
+
+ return i;
+}
+
+void
+RemoveGPUScreen(ScreenPtr pScreen)
+{
+ int idx, j;
+ if (!pScreen->isGPU)
+ return;
+
+ idx = pScreen->myNum - GPU_SCREEN_OFFSET;
+ for (j = idx; j < screenInfo.numGPUScreens - 1; j++) {
+ screenInfo.gpuscreens[j] = screenInfo.gpuscreens[j + 1];
+ }
+ screenInfo.numGPUScreens--;
+
+ free(pScreen);
+
+}
diff --git a/dix/dixutils.c b/dix/dixutils.c
index b249a81..3f24629 100644
--- a/dix/dixutils.c
+++ b/dix/dixutils.c
@@ -386,6 +386,9 @@ BlockHandler(pointer pTimeout, pointer pReadmask)
for (i = 0; i < screenInfo.numScreens; i++)
(*screenInfo.screens[i]->BlockHandler) (screenInfo.screens[i],
pTimeout, pReadmask);
+ for (i = 0; i < screenInfo.numGPUScreens; i++)
+ (*screenInfo.gpuscreens[i]->BlockHandler) (screenInfo.gpuscreens[i],
+ pTimeout, pReadmask);
for (i = 0; i < numHandlers; i++)
if (!handlers[i].deleted)
(*handlers[i].BlockHandler) (handlers[i].blockData,
@@ -422,6 +425,9 @@ WakeupHandler(int result, pointer pReadmask)
for (i = 0; i < screenInfo.numScreens; i++)
(*screenInfo.screens[i]->WakeupHandler) (screenInfo.screens[i],
result, pReadmask);
+ for (i = 0; i < screenInfo.numGPUScreens; i++)
+ (*screenInfo.gpuscreens[i]->WakeupHandler) (screenInfo.gpuscreens[i],
+ result, pReadmask);
if (handlerDeleted) {
for (i = 0; i < numHandlers;)
if (handlers[i].deleted) {
diff --git a/dix/main.c b/dix/main.c
index e95ca1c..a8ea4de 100644
--- a/dix/main.c
+++ b/dix/main.c
@@ -207,6 +207,12 @@ main(int argc, char *argv[], char *envp[])
FatalError("no screens found");
InitExtensions(argc, argv);
+ for (i = 0; i < screenInfo.numGPUScreens; i++) {
+ ScreenPtr pScreen = screenInfo.gpuscreens[i];
+ if (!CreateScratchPixmapsForScreen(pScreen))
+ FatalError("failed to create scratch pixmaps");
+ }
+
for (i = 0; i < screenInfo.numScreens; i++) {
ScreenPtr pScreen = screenInfo.screens[i];
@@ -335,6 +341,15 @@ main(int argc, char *argv[], char *envp[])
screenInfo.numScreens = i;
}
+ for (i = screenInfo.numGPUScreens - 1; i >= 0; i--) {
+ ScreenPtr pScreen = screenInfo.gpuscreens[i];
+ FreeScratchPixmapsForScreen(pScreen);
+ (*pScreen->CloseScreen) (pScreen);
+ dixFreePrivates(pScreen->devPrivates, PRIVATE_SCREEN);
+ free(pScreen);
+ screenInfo.numGPUScreens = i;
+ }
+
ReleaseClientIds(serverClient);
dixFreePrivates(serverClient->devPrivates, PRIVATE_CLIENT);
serverClient->devPrivates = NULL;
diff --git a/dix/privates.c b/dix/privates.c
index 15fbf75..c2bdeae 100644
--- a/dix/privates.c
+++ b/dix/privates.c
@@ -119,6 +119,11 @@ fixupScreens(FixupFunc fixup, unsigned bytes)
(&screenInfo.screens[s]->devPrivates, keys[PRIVATE_SCREEN].offset,
bytes))
return FALSE;
+ for (s = 0; s < screenInfo.numGPUScreens; s++)
+ if (!fixup
+ (&screenInfo.gpuscreens[s]->devPrivates, keys[PRIVATE_SCREEN].offset,
+ bytes))
+ return FALSE;
return TRUE;
}
diff --git a/include/misc.h b/include/misc.h
index fea74b8..22fb013 100644
--- a/include/misc.h
+++ b/include/misc.h
@@ -83,10 +83,14 @@ OF THIS SOFTWARE.
#ifndef MAXSCREENS
#define MAXSCREENS 16
#endif
+#ifndef MAXGPUSCREENS
+#define MAXGPUSCREENS 16
+#endif
#define MAXCLIENTS 256
#define MAXEXTENSIONS 128
#define MAXFORMATS 8
#define MAXDEVICES 40 /* input devices */
+#define GPU_SCREEN_OFFSET 256
/* 128 event opcodes for core + extension events, excluding GE */
#define MAXEVENTS 128
diff --git a/include/screenint.h b/include/screenint.h
index 6b0cc70..8205f63 100644
--- a/include/screenint.h
+++ b/include/screenint.h
@@ -62,6 +62,15 @@ extern _X_EXPORT int AddScreen(Bool (* /*pfnInit */ )(
int /*argc */ ,
char ** /*argv */ );
+
+extern _X_EXPORT int AddGPUScreen(Bool (*pfnInit) (ScreenPtr /*pScreen */ ,
+ int /*argc */ ,
+ char ** /*argv */
+ ),
+ int argc, char **argv);
+
+extern _X_EXPORT void RemoveGPUScreen(ScreenPtr pScreen);
+
typedef struct _ColormapRec *ColormapPtr;
#endif /* SCREENINT_H */
diff --git a/include/scrnintstr.h b/include/scrnintstr.h
index c592d1f..840c3ac 100644
--- a/include/scrnintstr.h
+++ b/include/scrnintstr.h
@@ -475,6 +475,8 @@ typedef struct _Screen {
* malicious users to steal framebuffer's content if that would be the
* default */
Bool canDoBGNoneRoot;
+
+ Bool isGPU;
} ScreenRec;
static inline RegionPtr
@@ -492,6 +494,8 @@ typedef struct _ScreenInfo {
PixmapFormatRec formats[MAXFORMATS];
int numScreens;
ScreenPtr screens[MAXSCREENS];
+ int numGPUScreens;
+ ScreenPtr gpuscreens[MAXGPUSCREENS];
int x; /* origin */
int y; /* origin */
int width; /* total width of all screens together */
diff --git a/render/glyph.c b/render/glyph.c
index acb573f..c121e64 100644
--- a/render/glyph.c
+++ b/render/glyph.c
@@ -687,6 +687,8 @@ miGlyphs(CARD8 op,
PicturePtr GetGlyphPicture(GlyphPtr glyph, ScreenPtr pScreen)
{
+ if (pScreen->isGPU)
+ return NULL;
return GlyphPicture(glyph)[pScreen->myNum];
}
--
1.7.10.2
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