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-rw-r--r--src/gallium/winsys/sw/wrapper/Makefile12
-rw-r--r--src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c282
-rw-r--r--src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h35
3 files changed, 329 insertions, 0 deletions
diff --git a/src/gallium/winsys/sw/wrapper/Makefile b/src/gallium/winsys/sw/wrapper/Makefile
new file mode 100644
index 00000000000..4771fbcf700
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/Makefile
@@ -0,0 +1,12 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = wsw
+
+C_SOURCES = wrapper_sw_winsys.c
+
+LIBRARY_INCLUDES =
+
+LIBRARY_DEFINES =
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c
new file mode 100644
index 00000000000..459b1c1e2a3
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c
@@ -0,0 +1,282 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+
+#include "wrapper_sw_winsys.h"
+
+#include "pipe/p_format.h"
+#include "pipe/p_state.h"
+
+#include "state_tracker/sw_winsys.h"
+
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+/*
+ * This code wraps a pipe_screen and exposes a sw_winsys interface for use
+ * with software resterizers. This code is used by the DRM based winsys to
+ * allow access to the drm driver.
+ *
+ * We must borrow the whole stack because only the pipe screen knows how
+ * to decode the content of a buffer. Or how to create a buffer that
+ * can still be used by drivers using real hardware (as the case is
+ * with software st/xorg but hw st/dri).
+ *
+ * We also need a pipe context for the transfers.
+ */
+
+struct wrapper_sw_winsys
+{
+ struct sw_winsys base;
+ struct pipe_screen *screen;
+ struct pipe_context *pipe;
+};
+
+struct wrapper_sw_displaytarget
+{
+ struct wrapper_sw_winsys *winsys;
+ struct pipe_texture *tex;
+ struct pipe_transfer *transfer;
+
+ unsigned width;
+ unsigned height;
+ unsigned map_count;
+ unsigned stride; /**< because we give stride at create */
+ void *ptr;
+};
+
+static INLINE struct wrapper_sw_winsys *
+wrapper_sw_winsys(struct sw_winsys *ws)
+{
+ return (struct wrapper_sw_winsys *)ws;
+}
+
+static INLINE struct wrapper_sw_displaytarget *
+wrapper_sw_displaytarget(struct sw_displaytarget *dt)
+{
+ return (struct wrapper_sw_displaytarget *)dt;
+}
+
+
+/*
+ * Functions
+ */
+
+
+static boolean
+wsw_dt_get_stride(struct wrapper_sw_displaytarget *wdt, unsigned *stride)
+{
+ struct pipe_context *pipe = wdt->winsys->pipe;
+ struct pipe_texture *tex = wdt->tex;
+ struct pipe_transfer *tr;
+
+ tr = pipe->get_tex_transfer(pipe, tex, 0, 0, 0,
+ PIPE_TRANSFER_READ_WRITE,
+ 0, 0, wdt->width, wdt->height);
+ if (!tr)
+ return FALSE;
+
+ *stride = tr->stride;
+ wdt->stride = tr->stride;
+
+ pipe->tex_transfer_destroy(pipe, tr);
+
+ return TRUE;
+}
+
+static struct sw_displaytarget *
+wsw_dt_wrap_texture(struct wrapper_sw_winsys *wsw,
+ struct pipe_texture *tex, unsigned *stride)
+{
+ struct wrapper_sw_displaytarget *wdt = CALLOC_STRUCT(wrapper_sw_displaytarget);
+ if (!wdt)
+ goto err_unref;
+
+ wdt->tex = tex;
+ wdt->winsys = wsw;
+
+ if (!wsw_dt_get_stride(wdt, stride))
+ goto err_free;
+
+ return (struct sw_displaytarget *)wdt;
+
+err_free:
+ FREE(wdt);
+err_unref:
+ pipe_texture_reference(&tex, NULL);
+ return NULL;
+}
+
+static struct sw_displaytarget *
+wsw_dt_create(struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format,
+ unsigned width, unsigned height,
+ unsigned alignment,
+ unsigned *stride)
+{
+ struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+ struct pipe_texture templ;
+ struct pipe_texture *tex;
+
+ /*
+ * XXX Why don't we just get the template.
+ */
+ memset(&templ, 0, sizeof(templ));
+ templ.width0 = width;
+ templ.height0 = height;
+ templ.format = format;
+ templ.tex_usage = tex_usage;
+
+ /* XXX alignment: we can't do anything about this */
+
+ tex = wsw->screen->texture_create(wsw->screen, &templ);
+ if (!tex)
+ return NULL;
+
+ return wsw_dt_wrap_texture(wsw, tex, stride);
+}
+
+static struct sw_displaytarget *
+wsw_dt_from_handle(struct sw_winsys *ws,
+ const struct pipe_texture *templ,
+ struct winsys_handle *whandle,
+ unsigned *stride)
+{
+ struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+ struct pipe_texture *tex;
+
+ tex = wsw->screen->texture_from_handle(wsw->screen, templ, whandle);
+ if (!tex)
+ return NULL;
+
+ return wsw_dt_wrap_texture(wsw, tex, stride);
+}
+
+static void *
+wsw_dt_map(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ unsigned flags)
+{
+ struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+ struct pipe_context *pipe = wdt->winsys->pipe;
+ struct pipe_texture *tex = wdt->tex;
+ struct pipe_transfer *tr;
+ void *ptr;
+
+ if (!wdt->map_count) {
+
+ assert(!wdt->transfer);
+
+ tr = pipe->get_tex_transfer(pipe, tex, 0, 0, 0,
+ PIPE_TRANSFER_READ_WRITE,
+ 0, 0, wdt->width, wdt->height);
+ if (!tr)
+ return NULL;
+
+ ptr = pipe->transfer_map(pipe, tr);
+ if (!ptr)
+ goto err;
+
+ wdt->transfer = tr;
+ wdt->ptr = ptr;
+
+ /* XXX Handle this case */
+ assert(tr->stride == wdt->stride);
+ }
+
+ wdt->map_count++;
+
+ return wdt->ptr;
+
+err:
+ pipe->tex_transfer_destroy(pipe, tr);
+ return NULL;
+}
+
+static void
+wsw_dt_unmap(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+ struct pipe_context *pipe = wdt->winsys->pipe;
+
+ assert(wdt->transfer);
+
+ wdt->map_count--;
+
+ if (wdt->map_count)
+ return;
+
+ pipe->transfer_unmap(pipe, wdt->transfer);
+ pipe->tex_transfer_destroy(pipe, wdt->transfer);
+ wdt->transfer = NULL;
+}
+
+static void
+wsw_dt_destroy(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+
+ pipe_texture_reference(&wdt->tex, NULL);
+
+ FREE(wdt);
+}
+
+static void
+wsw_destroy(struct sw_winsys *ws)
+{
+ struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+
+ wsw->pipe->destroy(wsw->pipe);
+ wsw->screen->destroy(wsw->screen);
+
+ FREE(wsw);
+}
+
+struct sw_winsys *
+wrapper_sw_winsys_warp_pipe_screen(struct pipe_screen *screen)
+{
+ struct wrapper_sw_winsys *wsw = CALLOC_STRUCT(wrapper_sw_winsys);
+
+ wsw->base.displaytarget_create = wsw_dt_create;
+ wsw->base.displaytarget_from_handle = wsw_dt_from_handle;
+ wsw->base.displaytarget_map = wsw_dt_map;
+ wsw->base.displaytarget_unmap = wsw_dt_unmap;
+ wsw->base.displaytarget_destroy = wsw_dt_destroy;
+ wsw->base.destroy = wsw_destroy;
+
+ wsw->screen = screen;
+ wsw->pipe = screen->context_create(screen, NULL);
+ if (!wsw->pipe)
+ goto err;
+
+ return &wsw->base;
+
+err:
+ FREE(wsw);
+ return NULL;
+}
diff --git a/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h
new file mode 100644
index 00000000000..b5c25a3c50f
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h
@@ -0,0 +1,35 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+
+#ifndef WRAPPER_SW_WINSYS
+#define WRAPPER_SW_WINSYS
+
+struct sw_winsys;
+struct pipe_screen;
+
+struct sw_winsys *wrapper_sw_winsys_warp_pipe_screen(struct pipe_screen *screen);
+
+#endif
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