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-rw-r--r--src/gallium/state_trackers/xorg/Makefile3
-rw-r--r--src/gallium/state_trackers/xorg/xorg_crtc.c69
-rw-r--r--src/gallium/state_trackers/xorg/xorg_driver.c392
-rw-r--r--src/gallium/state_trackers/xorg/xorg_tracker.h11
4 files changed, 353 insertions, 122 deletions
diff --git a/src/gallium/state_trackers/xorg/Makefile b/src/gallium/state_trackers/xorg/Makefile
index 22c107370e..cb2c3aea41 100644
--- a/src/gallium/state_trackers/xorg/Makefile
+++ b/src/gallium/state_trackers/xorg/Makefile
@@ -7,6 +7,9 @@ LIBRARY_INCLUDES = \
-DHAVE_CONFIG_H \
$(shell pkg-config xextproto --atleast-version=7.0.99.1 \
&& echo "-DHAVE_XEXTPROTO_71") \
+ $(shell pkg-config libkms --atleast-version=1.0 \
+ && echo "-DHAVE_LIBKMS") \
+ $(shell pkg-config libkms --silence-errors --cflags-only-I) \
$(shell pkg-config --cflags-only-I pixman-1 xorg-server libdrm xproto) \
-I$(TOP)/src/gallium/include \
-I$(TOP)/src/gallium/auxiliary \
diff --git a/src/gallium/state_trackers/xorg/xorg_crtc.c b/src/gallium/state_trackers/xorg/xorg_crtc.c
index 2db8d45b3b..ddcaedde37 100644
--- a/src/gallium/state_trackers/xorg/xorg_crtc.c
+++ b/src/gallium/state_trackers/xorg/xorg_crtc.c
@@ -52,12 +52,18 @@
#include "pipe/p_inlines.h"
#include "util/u_rect.h"
+#ifdef HAVE_LIBKMS
+#include "libkms.h"
+#endif
+
struct crtc_private
{
drmModeCrtcPtr drm_crtc;
/* hwcursor */
struct pipe_texture *cursor_tex;
+ struct kms_bo *cursor_bo;
+
unsigned cursor_handle;
};
@@ -174,7 +180,7 @@ crtc_set_cursor_position(xf86CrtcPtr crtc, int x, int y)
}
static void
-crtc_load_cursor_argb(xf86CrtcPtr crtc, CARD32 * image)
+crtc_load_cursor_argb_ga3d(xf86CrtcPtr crtc, CARD32 * image)
{
unsigned char *ptr;
modesettingPtr ms = modesettingPTR(crtc->scrn);
@@ -217,13 +223,63 @@ crtc_load_cursor_argb(xf86CrtcPtr crtc, CARD32 * image)
ms->screen->tex_transfer_destroy(transfer);
}
+#if HAVE_LIBKMS
+static void
+crtc_load_cursor_argb_kms(xf86CrtcPtr crtc, CARD32 * image)
+{
+ modesettingPtr ms = modesettingPTR(crtc->scrn);
+ struct crtc_private *crtcp = crtc->driver_private;
+ unsigned char *ptr;
+
+ if (!crtcp->cursor_bo) {
+ unsigned attr[8];
+
+ attr[0] = KMS_BO_TYPE;
+ attr[1] = KMS_BO_TYPE_CURSOR;
+ attr[2] = KMS_WIDTH;
+ attr[3] = 64;
+ attr[4] = KMS_HEIGHT;
+ attr[5] = 64;
+ attr[6] = 0;
+
+ if (kms_bo_create(ms->kms, attr, &crtcp->cursor_bo))
+ return;
+
+ if (kms_bo_get_prop(crtcp->cursor_bo, KMS_HANDLE,
+ &crtcp->cursor_handle))
+ goto err_bo_destroy;
+ }
+
+ kms_bo_map(crtcp->cursor_bo, (void**)&ptr);
+ memcpy(ptr, image, 64*64*4);
+ kms_bo_unmap(crtcp->cursor_bo);
+
+ return;
+
+err_bo_destroy:
+ kms_bo_destroy(crtcp->cursor_bo);
+}
+#endif
+
+static void
+crtc_load_cursor_argb(xf86CrtcPtr crtc, CARD32 * image)
+{
+ modesettingPtr ms = modesettingPTR(crtc->scrn);
+ if (ms->screen)
+ crtc_load_cursor_argb_ga3d(crtc, image);
+#ifdef HAVE_LIBKMS
+ else if (ms->kms)
+ crtc_load_cursor_argb_kms(crtc, image);
+#endif
+}
+
static void
crtc_show_cursor(xf86CrtcPtr crtc)
{
modesettingPtr ms = modesettingPTR(crtc->scrn);
struct crtc_private *crtcp = crtc->driver_private;
- if (crtcp->cursor_tex)
+ if (crtcp->cursor_tex || crtcp->cursor_bo)
drmModeSetCursor(ms->fd, crtcp->drm_crtc->crtc_id,
crtcp->cursor_handle, 64, 64);
}
@@ -245,9 +301,14 @@ xorg_crtc_cursor_destroy(xf86CrtcPtr crtc)
{
struct crtc_private *crtcp = crtc->driver_private;
- if (crtcp->cursor_tex) {
+ if (crtcp->cursor_tex)
pipe_texture_reference(&crtcp->cursor_tex, NULL);
- }
+#ifdef HAVE_LIBKMS
+ if (crtcp->cursor_bo)
+ kms_bo_destroy(crtcp->cursor_bo);
+#endif
+
+ xfree(crtcp);
}
/*
diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index bb8c2f744d..c74fb28072 100644
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -56,6 +56,10 @@
#include "xorg_tracker.h"
#include "xorg_winsys.h"
+#ifdef HAVE_LIBKMS
+#include "libkms.h"
+#endif
+
/*
* Functions and symbols exported to Xorg via pointers.
*/
@@ -112,6 +116,7 @@ xorg_tracker_set_functions(ScrnInfoPtr scrn)
* Internal function definitions
*/
+static Bool drv_init_front_buffer_functions(ScrnInfoPtr pScrn);
static Bool drv_close_screen(int scrnIndex, ScreenPtr pScreen);
static Bool drv_save_hw_state(ScrnInfoPtr pScrn);
static Bool drv_restore_hw_state(ScrnInfoPtr pScrn);
@@ -153,74 +158,9 @@ drv_probe_ddc(ScrnInfoPtr pScrn, int index)
}
static Bool
-drv_create_front_buffer(ScrnInfoPtr pScrn)
-{
- modesettingPtr ms = modesettingPTR(pScrn);
- unsigned handle, stride;
- struct pipe_texture *tex;
-
- ms->noEvict = TRUE;
-
- tex = xorg_exa_create_root_texture(pScrn, pScrn->virtualX, pScrn->virtualY,
- pScrn->depth, pScrn->bitsPerPixel);
-
- if (!tex)
- return FALSE;
-
- if (!ms->api->local_handle_from_texture(ms->api, ms->screen,
- tex,
- &stride,
- &handle))
- return FALSE;
-
- drmModeAddFB(ms->fd,
- pScrn->virtualX,
- pScrn->virtualY,
- pScrn->depth,
- pScrn->bitsPerPixel,
- stride,
- handle,
- &ms->fb_id);
-
- pScrn->frameX0 = 0;
- pScrn->frameY0 = 0;
- drv_adjust_frame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
-
- pipe_texture_reference(&ms->root_texture, tex);
- pipe_texture_reference(&tex, NULL);
- return TRUE;
-}
-
-static Bool
-drv_bind_texture_to_root(ScrnInfoPtr pScrn)
-{
- modesettingPtr ms = modesettingPTR(pScrn);
- ScreenPtr pScreen = pScrn->pScreen;
- struct pipe_texture *check;
- PixmapPtr rootPixmap;
-
- rootPixmap = pScreen->GetScreenPixmap(pScreen);
-
- xorg_exa_set_displayed_usage(rootPixmap);
- xorg_exa_set_shared_usage(rootPixmap);
- xorg_exa_set_texture(rootPixmap, ms->root_texture);
- if (!pScreen->ModifyPixmapHeader(rootPixmap, -1, -1, -1, -1, -1, NULL))
- FatalError("Couldn't adjust screen pixmap\n");
-
- check = xorg_exa_get_texture(rootPixmap);
- if (ms->root_texture != check)
- FatalError("Created new root texture\n");
-
- pipe_texture_reference(&check, NULL);
-
- return TRUE;
-}
-
-static Bool
drv_crtc_resize(ScrnInfoPtr pScrn, int width, int height)
{
modesettingPtr ms = modesettingPTR(pScrn);
- unsigned handle, stride;
PixmapPtr rootPixmap;
ScreenPtr pScreen = pScrn->pScreen;
@@ -234,36 +174,18 @@ drv_crtc_resize(ScrnInfoPtr pScrn, int width, int height)
* Remove the old framebuffer & texture.
*/
drmModeRmFB(ms->fd, ms->fb_id);
- pipe_texture_reference(&ms->root_texture, NULL);
-
+ if (!ms->destroy_front_buffer(pScrn))
+ FatalError("failed to destroy front buffer\n");
rootPixmap = pScreen->GetScreenPixmap(pScreen);
if (!pScreen->ModifyPixmapHeader(rootPixmap, width, height, -1, -1, -1, NULL))
return FALSE;
- /* takes one ref */
- ms->root_texture = xorg_exa_get_texture(rootPixmap);
-
- if (!ms->api->local_handle_from_texture(ms->api, ms->screen,
- ms->root_texture,
- &stride,
- &handle))
- FatalError("Could not get handle and stride from texture\n");
-
- drmModeAddFB(ms->fd,
- pScrn->virtualX,
- pScrn->virtualY,
- pScrn->depth,
- pScrn->bitsPerPixel,
- stride,
- handle,
- &ms->fb_id);
-
/* HW dependent - FIXME */
pScrn->displayWidth = pScrn->virtualX;
/* now create new frontbuffer */
- return drv_create_front_buffer(pScrn) && drv_bind_texture_to_root(pScrn);
+ return ms->create_front_buffer(pScrn) && ms->bind_front_buffer(pScrn);
}
static const xf86CrtcConfigFuncsRec crtc_config_funcs = {
@@ -291,13 +213,57 @@ drv_init_drm(ScrnInfoPtr pScrn)
return FALSE;
}
- if (!ms->api) {
- ms->api = drm_api_create();
+ return TRUE;
+}
- if (!ms->api)
- return FALSE;
+static Bool
+drv_init_resource_management(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+
+ if (ms->screen || ms->kms)
+ return TRUE;
+
+ ms->api = drm_api_create();
+ if (ms->api) {
+ ms->screen = ms->api->create_screen(ms->api, ms->fd, NULL);
+
+ if (ms->screen)
+ return TRUE;
+
+ if (ms->api->destroy)
+ ms->api->destroy(ms->api);
+
+ ms->api = NULL;
}
+#ifdef HAVE_LIBKMS
+ if (!kms_create(ms->fd, &ms->kms))
+ return TRUE;
+#endif
+
+ return FALSE;
+}
+
+static Bool
+drv_close_resource_management(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+
+ if (ms->screen)
+ ms->screen->destroy(ms->screen);
+ ms->screen = NULL;
+
+ if (ms->api && ms->api->destroy)
+ ms->api->destroy(ms->api);
+ ms->api = NULL;
+
+#ifdef HAVE_LIBKMS
+ if (ms->kms)
+ kms_destroy(ms->kms);
+ ms->kms = NULL;
+#endif
+
return TRUE;
}
@@ -443,14 +409,16 @@ drv_pre_init(ScrnInfoPtr pScrn, int flags)
xf86SetDpi(pScrn, 0, 0);
/* Load the required sub modules */
- if (!xf86LoadSubModule(pScrn, "fb")) {
+ if (!xf86LoadSubModule(pScrn, "fb"))
return FALSE;
- }
- xf86LoadSubModule(pScrn, "exa");
+ /* XXX: these aren't needed when we are using libkms */
+ if (!xf86LoadSubModule(pScrn, "exa"))
+ return FALSE;
#ifdef DRI2
- xf86LoadSubModule(pScrn, "dri2");
+ if (!xf86LoadSubModule(pScrn, "dri2"))
+ return FALSE;
#endif
return TRUE;
@@ -482,7 +450,8 @@ static void drv_block_handler(int i, pointer blockData, pointer pTimeout,
pScreen->BlockHandler(i, blockData, pTimeout, pReadmask);
pScreen->BlockHandler = drv_block_handler;
- ms->ctx->flush(ms->ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
+ if (ms->ctx)
+ ms->ctx->flush(ms->ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
#ifdef DRM_MODE_FEATURE_DIRTYFB
{
@@ -525,7 +494,7 @@ drv_create_screen_resources(ScreenPtr pScreen)
ret = pScreen->CreateScreenResources(pScreen);
pScreen->CreateScreenResources = drv_create_screen_resources;
- drv_bind_texture_to_root(pScrn);
+ ms->bind_front_buffer(pScrn);
ms->noEvict = FALSE;
@@ -559,16 +528,19 @@ drv_screen_init(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
modesettingPtr ms = modesettingPTR(pScrn);
VisualPtr visual;
- if (!drv_init_drm(pScrn))
+ if (!drv_init_drm(pScrn)) {
+ FatalError("Could not init DRM");
return FALSE;
+ }
- if (!ms->screen) {
- ms->screen = ms->api->create_screen(ms->api, ms->fd, NULL);
+ if (!drv_init_resource_management(pScrn)) {
+ FatalError("Could not init resource management (!pipe_screen && !libkms)");
+ return FALSE;
+ }
- if (!ms->screen) {
- FatalError("Could not init pipe_screen\n");
- return FALSE;
- }
+ if (!drv_init_front_buffer_functions(pScrn)) {
+ FatalError("Could not init front buffer manager");
+ return FALSE;
}
pScrn->pScreen = pScreen;
@@ -619,11 +591,16 @@ drv_screen_init(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
xf86SetBlackWhitePixels(pScreen);
- ms->exa = xorg_exa_init(pScrn, xf86ReturnOptValBool(ms->Options,
- OPTION_2D_ACCEL, TRUE));
- ms->debug_fallback = debug_get_bool_option("XORG_DEBUG_FALLBACK", TRUE);
+ if (ms->screen) {
+ ms->exa = xorg_exa_init(pScrn, xf86ReturnOptValBool(ms->Options,
+ OPTION_2D_ACCEL, TRUE));
+ ms->debug_fallback = debug_get_bool_option("XORG_DEBUG_FALLBACK", TRUE);
- xorg_xv_init(pScreen);
+ xorg_xv_init(pScreen);
+#ifdef DRI2
+ xorg_dri2_init(pScreen);
+#endif
+ }
miInitializeBackingStore(pScreen);
xf86SetBackingStore(pScreen);
@@ -655,10 +632,6 @@ drv_screen_init(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
if (serverGeneration == 1)
xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options);
-#ifdef DRI2
- xorg_dri2_init(pScreen);
-#endif
-
return drv_enter_vt(scrnIndex, 1);
}
@@ -745,10 +718,10 @@ drv_enter_vt(int scrnIndex, int flags)
drv_save_hw_state(pScrn);
}
- if (!drv_create_front_buffer(pScrn))
+ if (!ms->create_front_buffer(pScrn))
return FALSE;
- if (!flags && !drv_bind_texture_to_root(pScrn))
+ if (!flags && !ms->bind_front_buffer(pScrn))
return FALSE;
if (!xf86SetDesiredModes(pScrn))
@@ -774,8 +747,10 @@ drv_close_screen(int scrnIndex, ScreenPtr pScreen)
if (pScrn->vtSema) {
drv_leave_vt(scrnIndex, 0);
}
+
#ifdef DRI2
- xorg_dri2_close(pScreen);
+ if (ms->screen)
+ xorg_dri2_close(pScreen);
#endif
pScreen->BlockHandler = ms->blockHandler;
@@ -789,14 +764,14 @@ drv_close_screen(int scrnIndex, ScreenPtr pScreen)
}
#endif
- pipe_texture_reference(&ms->root_texture, NULL);
+ drmModeRmFB(ms->fd, ms->fb_id);
+ ms->destroy_front_buffer(pScrn);
if (ms->exa)
xorg_exa_close(pScrn);
+ ms->exa = NULL;
- if (ms->api && ms->api->destroy)
- ms->api->destroy(ms->api);
- ms->api = NULL;
+ drv_close_resource_management(pScrn);
drmClose(ms->fd);
ms->fd = -1;
@@ -812,4 +787,185 @@ drv_valid_mode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags)
return MODE_OK;
}
+
+/*
+ * Front buffer backing store functions.
+ */
+
+static Bool
+drv_destroy_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ pipe_texture_reference(&ms->root_texture, NULL);
+ return TRUE;
+}
+
+static Bool
+drv_create_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ unsigned handle, stride;
+ struct pipe_texture *tex;
+
+ ms->noEvict = TRUE;
+
+ tex = xorg_exa_create_root_texture(pScrn, pScrn->virtualX, pScrn->virtualY,
+ pScrn->depth, pScrn->bitsPerPixel);
+
+ if (!tex)
+ return FALSE;
+
+ if (!ms->api->local_handle_from_texture(ms->api, ms->screen,
+ tex,
+ &stride,
+ &handle))
+ return FALSE;
+
+ drmModeAddFB(ms->fd,
+ pScrn->virtualX,
+ pScrn->virtualY,
+ pScrn->depth,
+ pScrn->bitsPerPixel,
+ stride,
+ handle,
+ &ms->fb_id);
+
+ pScrn->frameX0 = 0;
+ pScrn->frameY0 = 0;
+ drv_adjust_frame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
+
+ pipe_texture_reference(&ms->root_texture, tex);
+ pipe_texture_reference(&tex, NULL);
+
+ return TRUE;
+}
+
+static Bool
+drv_bind_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ ScreenPtr pScreen = pScrn->pScreen;
+ PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+ struct pipe_texture *check;
+
+ xorg_exa_set_displayed_usage(rootPixmap);
+ xorg_exa_set_shared_usage(rootPixmap);
+ xorg_exa_set_texture(rootPixmap, ms->root_texture);
+ if (!pScreen->ModifyPixmapHeader(rootPixmap, -1, -1, -1, -1, -1, NULL))
+ FatalError("Couldn't adjust screen pixmap\n");
+
+ check = xorg_exa_get_texture(rootPixmap);
+ if (ms->root_texture != check)
+ FatalError("Created new root texture\n");
+
+ pipe_texture_reference(&check, NULL);
+ return TRUE;
+}
+
+#ifdef HAVE_LIBKMS
+static Bool
+drv_destroy_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+
+ if (!ms->root_bo)
+ return TRUE;
+
+ kms_bo_unmap(ms->root_bo);
+ kms_bo_destroy(ms->root_bo);
+ ms->root_bo = NULL;
+ return TRUE;
+}
+
+static Bool
+drv_create_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ unsigned handle, stride;
+ struct kms_bo *bo;
+ unsigned attr[8];
+
+ attr[0] = KMS_BO_TYPE;
+ attr[1] = KMS_BO_TYPE_SCANOUT;
+ attr[2] = KMS_WIDTH;
+ attr[3] = pScrn->virtualX;
+ attr[4] = KMS_HEIGHT;
+ attr[5] = pScrn->virtualY;
+ attr[6] = 0;
+
+ if (kms_bo_create(ms->kms, attr, &bo))
+ return FALSE;
+
+ if (kms_bo_get_prop(bo, KMS_PITCH, &stride))
+ goto err_destroy;
+
+ if (kms_bo_get_prop(bo, KMS_HANDLE, &handle))
+ goto err_destroy;
+
+ drmModeAddFB(ms->fd,
+ pScrn->virtualX,
+ pScrn->virtualY,
+ pScrn->depth,
+ pScrn->bitsPerPixel,
+ stride,
+ handle,
+ &ms->fb_id);
+
+ pScrn->frameX0 = 0;
+ pScrn->frameY0 = 0;
+ drv_adjust_frame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
+ ms->root_bo = bo;
+
+ return TRUE;
+
+err_destroy:
+ kms_bo_destroy(bo);
+ return FALSE;
+}
+
+static Bool
+drv_bind_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ ScreenPtr pScreen = pScrn->pScreen;
+ PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+ unsigned stride;
+ void *ptr;
+
+ if (kms_bo_get_prop(ms->root_bo, KMS_PITCH, &stride))
+ return FALSE;
+
+ if (kms_bo_map(ms->root_bo, &ptr))
+ return FALSE;
+
+ pScreen->ModifyPixmapHeader(rootPixmap,
+ pScreen->width,
+ pScreen->height,
+ pScreen->rootDepth,
+ pScrn->bitsPerPixel,
+ stride,
+ ptr);
+ return TRUE;
+}
+#endif /* HAVE_LIBKMS */
+
+static Bool drv_init_front_buffer_functions(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ if (ms->screen) {
+ ms->destroy_front_buffer = drv_destroy_front_buffer_ga3d;
+ ms->create_front_buffer = drv_create_front_buffer_ga3d;
+ ms->bind_front_buffer = drv_bind_front_buffer_ga3d;
+#ifdef HAVE_LIBKMS
+ } else if (ms->kms) {
+ ms->destroy_front_buffer = drv_destroy_front_buffer_kms;
+ ms->create_front_buffer = drv_create_front_buffer_kms;
+ ms->bind_front_buffer = drv_bind_front_buffer_kms;
+#endif
+ } else
+ return FALSE;
+
+ return TRUE;
+}
+
/* vim: set sw=4 ts=8 sts=4: */
diff --git a/src/gallium/state_trackers/xorg/xorg_tracker.h b/src/gallium/state_trackers/xorg/xorg_tracker.h
index 580dae474d..31e11b4809 100644
--- a/src/gallium/state_trackers/xorg/xorg_tracker.h
+++ b/src/gallium/state_trackers/xorg/xorg_tracker.h
@@ -51,6 +51,8 @@
#define DRV_ERROR(msg) xf86DrvMsg(pScrn->scrnIndex, X_ERROR, msg);
+struct kms_bo;
+struct kms_driver;
struct exa_context;
typedef struct
@@ -86,6 +88,15 @@ typedef struct _modesettingRec
void (*blockHandler)(int, pointer, pointer, pointer);
CreateScreenResourcesProcPtr createScreenResources;
+ /* for frontbuffer backing store */
+ Bool (*destroy_front_buffer)(ScrnInfoPtr pScrn);
+ Bool (*create_front_buffer)(ScrnInfoPtr pScrn);
+ Bool (*bind_front_buffer)(ScrnInfoPtr pScrn);
+
+ /* kms */
+ struct kms_driver *kms;
+ struct kms_bo *root_bo;
+
/* gallium */
struct drm_api *api;
struct pipe_screen *screen;