Mesa (master): winsys: Add fbdev software winsys.
Chia-I Wu
olv at kemper.freedesktop.org
Fri Jun 11 04:57:23 UTC 2010
Module: Mesa
Branch: master
Commit: ce0c837f60d951de4f4798e5d4ab559155c09979
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ce0c837f60d951de4f4798e5d4ab559155c09979
Author: Chia-I Wu <olv at lunarg.com>
Date: Thu Jun 3 18:08:48 2010 +0800
winsys: Add fbdev software winsys.
This is a simple winsys that mmap()s the framebuffer device and
memcpy()s the contents of display targets to the framebuffer device for
displaying.
---
src/gallium/winsys/sw/fbdev/Makefile | 13 ++
src/gallium/winsys/sw/fbdev/SConscript | 23 +++
src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.c | 224 +++++++++++++++++++++++++
src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.h | 38 ++++
4 files changed, 298 insertions(+), 0 deletions(-)
diff --git a/src/gallium/winsys/sw/fbdev/Makefile b/src/gallium/winsys/sw/fbdev/Makefile
new file mode 100644
index 0000000..8832aab
--- /dev/null
+++ b/src/gallium/winsys/sw/fbdev/Makefile
@@ -0,0 +1,13 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = fbdev
+
+LIBRARY_INCLUDES =
+
+LIBRARY_DEFINES =
+
+C_SOURCES = \
+ fbdev_sw_winsys.c
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/sw/fbdev/SConscript b/src/gallium/winsys/sw/fbdev/SConscript
new file mode 100644
index 0000000..3b5b4ff
--- /dev/null
+++ b/src/gallium/winsys/sw/fbdev/SConscript
@@ -0,0 +1,23 @@
+#######################################################################
+# SConscript for fbdev winsys
+
+
+Import('*')
+
+if env['platform'] == 'linux':
+
+ env = env.Clone()
+
+ env.Append(CPPPATH = [
+ '#/src/gallium/include',
+ '#/src/gallium/auxiliary',
+ '#/src/gallium/drivers',
+ ])
+
+ ws_fbdev = env.ConvenienceLibrary(
+ target = 'ws_fbdev',
+ source = [
+ 'fbdev_sw_winsys.c',
+ ]
+ )
+ Export('ws_fbdev')
diff --git a/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.c b/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.c
new file mode 100644
index 0000000..f4f4cd7
--- /dev/null
+++ b/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.c
@@ -0,0 +1,224 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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.
+ *
+ * Authors:
+ * Chia-I Wu <olv at lunarg.com>
+ */
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+
+#include "pipe/p_compiler.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "state_tracker/sw_winsys.h"
+
+#include "fbdev_sw_winsys.h"
+
+struct fbdev_sw_displaytarget
+{
+ enum pipe_format format;
+ unsigned width;
+ unsigned height;
+ unsigned stride;
+
+ void *data;
+ void *mapped;
+};
+
+struct fbdev_sw_winsys
+{
+ struct sw_winsys base;
+
+ int fd;
+ enum pipe_format format;
+
+ struct fb_fix_screeninfo finfo;
+ void *fbmem;
+ unsigned rows;
+ unsigned stride;
+};
+
+static INLINE struct fbdev_sw_displaytarget *
+fbdev_sw_displaytarget(struct sw_displaytarget *dt)
+{
+ return (struct fbdev_sw_displaytarget *) dt;
+}
+
+static INLINE struct fbdev_sw_winsys *
+fbdev_sw_winsys(struct sw_winsys *ws)
+{
+ return (struct fbdev_sw_winsys *) ws;
+}
+
+static void
+fbdev_displaytarget_display(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ void *context_private)
+{
+ struct fbdev_sw_winsys *fbdev = fbdev_sw_winsys(ws);
+ struct fbdev_sw_displaytarget *fbdt = fbdev_sw_displaytarget(dt);
+ unsigned rows, len, i;
+
+ rows = MIN2(fbdt->height, fbdev->rows);
+ len = util_format_get_stride(fbdt->format, fbdt->width);
+ len = MIN2(len, fbdev->stride);
+
+ for (i = 0; i < rows; i++) {
+ void *dst = fbdev->fbmem + fbdev->stride * i;
+ void *src = fbdt->data + fbdt->stride * i;
+
+ memcpy(dst, src, len);
+ }
+}
+
+static void
+fbdev_displaytarget_unmap(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct fbdev_sw_displaytarget *fbdt = fbdev_sw_displaytarget(dt);
+ fbdt->mapped = NULL;
+}
+
+static void *
+fbdev_displaytarget_map(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ unsigned flags)
+{
+ struct fbdev_sw_displaytarget *fbdt = fbdev_sw_displaytarget(dt);
+ fbdt->mapped = fbdt->data;
+ return fbdt->mapped;
+}
+
+static void
+fbdev_displaytarget_destroy(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct fbdev_sw_displaytarget *fbdt = fbdev_sw_displaytarget(dt);
+
+ if (fbdt->data)
+ align_free(fbdt->data);
+
+ FREE(fbdt);
+}
+
+static struct sw_displaytarget *
+fbdev_displaytarget_create(struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format,
+ unsigned width, unsigned height,
+ unsigned alignment,
+ unsigned *stride)
+{
+ struct fbdev_sw_winsys *fbdev = fbdev_sw_winsys(ws);
+ struct fbdev_sw_displaytarget *fbdt;
+ unsigned nblocksy, size, format_stride;
+
+ if (fbdev->format != format)
+ return NULL;
+
+ fbdt = CALLOC_STRUCT(fbdev_sw_displaytarget);
+ if (!fbdt)
+ return NULL;
+
+ fbdt->format = format;
+ fbdt->width = width;
+ fbdt->height = height;
+
+ format_stride = util_format_get_stride(format, width);
+ fbdt->stride = align(format_stride, alignment);
+
+ nblocksy = util_format_get_nblocksy(format, height);
+ size = fbdt->stride * nblocksy;
+
+ fbdt->data = align_malloc(size, alignment);
+ if (!fbdt->data) {
+ FREE(fbdt);
+ return NULL;
+ }
+
+ *stride = fbdt->stride;
+
+ return (struct sw_displaytarget *) fbdt;
+}
+
+static boolean
+fbdev_is_displaytarget_format_supported(struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format)
+{
+ struct fbdev_sw_winsys *fbdev = fbdev_sw_winsys(ws);
+ return (fbdev->format == format);
+}
+
+static void
+fbdev_destroy(struct sw_winsys *ws)
+{
+ struct fbdev_sw_winsys *fbdev = fbdev_sw_winsys(ws);
+
+ munmap(fbdev->fbmem, fbdev->finfo.smem_len);
+ FREE(fbdev);
+}
+
+struct sw_winsys *
+fbdev_create_sw_winsys(int fd, enum pipe_format format)
+{
+ struct fbdev_sw_winsys *fbdev;
+
+ fbdev = CALLOC_STRUCT(fbdev_sw_winsys);
+ if (!fbdev)
+ return NULL;
+
+ fbdev->fd = fd;
+ fbdev->format = format;
+ if (ioctl(fbdev->fd, FBIOGET_FSCREENINFO, &fbdev->finfo)) {
+ FREE(fbdev);
+ return NULL;
+ }
+
+ fbdev->fbmem = mmap(0, fbdev->finfo.smem_len,
+ PROT_WRITE, MAP_SHARED, fbdev->fd, 0);
+ if (fbdev->fbmem == MAP_FAILED) {
+ FREE(fbdev);
+ return NULL;
+ }
+
+ fbdev->rows = fbdev->finfo.smem_len / fbdev->finfo.line_length;
+ fbdev->stride = fbdev->finfo.line_length;
+
+ fbdev->base.destroy = fbdev_destroy;
+ fbdev->base.is_displaytarget_format_supported =
+ fbdev_is_displaytarget_format_supported;
+
+ fbdev->base.displaytarget_create = fbdev_displaytarget_create;
+ fbdev->base.displaytarget_destroy = fbdev_displaytarget_destroy;
+ fbdev->base.displaytarget_map = fbdev_displaytarget_map;
+ fbdev->base.displaytarget_unmap = fbdev_displaytarget_unmap;
+
+ fbdev->base.displaytarget_display = fbdev_displaytarget_display;
+
+ return &fbdev->base;
+}
diff --git a/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.h b/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.h
new file mode 100644
index 0000000..d958ab9
--- /dev/null
+++ b/src/gallium/winsys/sw/fbdev/fbdev_sw_winsys.h
@@ -0,0 +1,38 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.8
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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.
+ *
+ * Authors:
+ * Chia-I Wu <olv at lunarg.com>
+ */
+
+#ifndef FBDEV_SW_WINSYS
+#define FBDEV_SW_WINSYS
+
+struct sw_winsys;
+enum pipe_format;
+
+struct sw_winsys *
+fbdev_create_sw_winsys(int fd, enum pipe_format format);
+
+#endif /* FBDEV_SW_WINSYS */
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