Mesa (gallium-drm-driver-descriptor): target-helpers: Add inline helpers

[Jakob Bornecrantz]

Module: Mesa
Branch: gallium-drm-driver-descriptor
Commit: bd739e95763d8051679649cc44d16d4fcbb0fec1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=bd739e95763d8051679649cc44d16d4fcbb0fec1

Author: Jakob Bornecrantz <jakob at vmware.com>
Date:   Fri Jun 18 19:07:04 2010 +0200

target-helpers: Add inline helpers

---

 .../auxiliary/target-helpers/inline_sw_helper.h    |   63 ++++++++++++++++++++
 .../target-helpers/inline_wrapper_sw_helper.h      |   34 +++++++++++
 2 files changed, 97 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/target-helpers/inline_sw_helper.h b/src/gallium/auxiliary/target-helpers/inline_sw_helper.h
new file mode 100644
index 0000000..036c1ee
--- /dev/null
+++ b/src/gallium/auxiliary/target-helpers/inline_sw_helper.h
@@ -0,0 +1,63 @@
+
+#ifndef INLINE_SW_HELPER_H
+#define INLINE_SW_HELPER_H
+
+#include "pipe/p_compiler.h"
+#include "util/u_debug.h"
+#include "state_tracker/sw_winsys.h"
+
+
+/* Helper function to choose and instantiate one of the software rasterizers:
+ * cell, llvmpipe, softpipe.
+ */
+
+#ifdef GALLIUM_SOFTPIPE
+#include "softpipe/sp_public.h"
+#endif
+
+#ifdef GALLIUM_LLVMPIPE
+#include "llvmpipe/lp_public.h"
+#endif
+
+#ifdef GALLIUM_CELL
+#include "cell/ppu/cell_public.h"
+#endif
+
+static INLINE struct pipe_screen *
+sw_screen_create(struct sw_winsys *winsys)
+{
+   const char *default_driver;
+   const char *driver;
+   struct pipe_screen *screen = NULL;
+
+#if defined(GALLIUM_CELL)
+   default_driver = "cell";
+#elif defined(GALLIUM_LLVMPIPE)
+   default_driver = "llvmpipe";
+#elif defined(GALLIUM_SOFTPIPE)
+   default_driver = "softpipe";
+#else
+   default_driver = "";
+#endif
+
+   driver = debug_get_option("GALLIUM_DRIVER", default_driver);
+
+#if defined(GALLIUM_CELL)
+   if (screen == NULL && strcmp(driver, "cell") == 0)
+      screen = cell_create_screen(winsys);
+#endif
+
+#if defined(GALLIUM_LLVMPIPE)
+   if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
+      screen = llvmpipe_create_screen(winsys);
+#endif
+
+#if defined(GALLIUM_SOFTPIPE)
+   if (screen == NULL)
+      screen = softpipe_create_screen(winsys);
+#endif
+
+   return screen;
+}
+
+#endif
diff --git a/src/gallium/auxiliary/target-helpers/inline_wrapper_sw_helper.h b/src/gallium/auxiliary/target-helpers/inline_wrapper_sw_helper.h
new file mode 100644
index 0000000..0b4e740
--- /dev/null
+++ b/src/gallium/auxiliary/target-helpers/inline_wrapper_sw_helper.h
@@ -0,0 +1,34 @@
+
+#ifndef INLINE_WRAPPER_SW_HELPER_H
+#define INLINE_WRAPPER_SW_HELPER_H
+
+#include "target-helpers/inline_sw_helper.h"
+#include "sw/wrapper/wrapper_sw_winsys.h"
+
+/**
+ * Try to wrap a hw screen with a software screen.
+ * On failure will return given screen.
+ */
+static INLINE struct pipe_screen *
+sw_screen_wrap(struct pipe_screen *screen)
+{
+   struct sw_winsys *sws;
+   struct pipe_screen *sw_screen;
+
+   sws = wrapper_sw_winsys_warp_pipe_screen(screen);
+   if (!sws)
+      goto err;
+
+   sw_screen = sw_screen_create(sws);
+   if (sw_screen == screen)
+      goto err_winsys;
+
+   return sw_screen;
+
+err_winsys:
+   sws->destroy(sws);
+err:
+  return screen;
+}
+
+#endif