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Diffstat (limited to 'src/gallium/winsys/xlib/xlib_cell.c')
-rw-r--r--src/gallium/winsys/xlib/xlib_cell.c437
1 files changed, 437 insertions, 0 deletions
diff --git a/src/gallium/winsys/xlib/xlib_cell.c b/src/gallium/winsys/xlib/xlib_cell.c
new file mode 100644
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+++ b/src/gallium/winsys/xlib/xlib_cell.c
@@ -0,0 +1,437 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ *
+ **************************************************************************/
+
+/*
+ * Authors:
+ * Keith Whitwell
+ * Brian Paul
+ */
+
+#include "xlib.h"
+
+#ifdef GALLIUM_CELL
+
+#include "xm_api.h"
+
+#undef ASSERT
+#undef Elements
+
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_format.h"
+#include "pipe/p_context.h"
+#include "pipe/p_inlines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "cell/ppu/cell_context.h"
+#include "cell/ppu/cell_screen.h"
+#include "cell/ppu/cell_winsys.h"
+#include "cell/ppu/cell_texture.h"
+
+
+/**
+ * Subclass of pipe_buffer for Xlib winsys.
+ * Low-level OS/window system memory buffer
+ */
+struct xm_buffer
+{
+ struct pipe_buffer base;
+ boolean userBuffer; /** Is this a user-space buffer? */
+ void *data;
+ void *mapped;
+
+ XImage *tempImage;
+ int shm;
+};
+
+
+/**
+ * Subclass of pipe_winsys for Xlib winsys
+ */
+struct xmesa_pipe_winsys
+{
+ struct pipe_winsys base;
+};
+
+
+
+/** Cast wrapper */
+static INLINE struct xm_buffer *
+xm_buffer( struct pipe_buffer *buf )
+{
+ return (struct xm_buffer *)buf;
+}
+
+
+/* Most callbacks map direcly onto dri_bufmgr operations:
+ */
+static void *
+xm_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf,
+ unsigned flags)
+{
+ struct xm_buffer *xm_buf = xm_buffer(buf);
+ xm_buf->mapped = xm_buf->data;
+ return xm_buf->mapped;
+}
+
+static void
+xm_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf)
+{
+ struct xm_buffer *xm_buf = xm_buffer(buf);
+ xm_buf->mapped = NULL;
+}
+
+static void
+xm_buffer_destroy(struct pipe_winsys *pws,
+ struct pipe_buffer *buf)
+{
+ struct xm_buffer *oldBuf = xm_buffer(buf);
+
+ if (oldBuf->data) {
+ {
+ if (!oldBuf->userBuffer) {
+ align_free(oldBuf->data);
+ }
+ }
+
+ oldBuf->data = NULL;
+ }
+
+ free(oldBuf);
+}
+
+
+/**
+ * For Cell. Basically, rearrange the pixels/quads from this layout:
+ * +--+--+--+--+
+ * |p0|p1|p2|p3|....
+ * +--+--+--+--+
+ *
+ * to this layout:
+ * +--+--+
+ * |p0|p1|....
+ * +--+--+
+ * |p2|p3|
+ * +--+--+
+ */
+static void
+twiddle_tile(const uint *tileIn, uint *tileOut)
+{
+ int y, x;
+
+ for (y = 0; y < TILE_SIZE; y+=2) {
+ for (x = 0; x < TILE_SIZE; x+=2) {
+ int k = 4 * (y/2 * TILE_SIZE/2 + x/2);
+ tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k];
+ tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1];
+ tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2];
+ tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3];
+ }
+ }
+}
+
+
+
+/**
+ * Display a surface that's in a tiled configuration. That is, all the
+ * pixels for a TILE_SIZExTILE_SIZE block are contiguous in memory.
+ */
+static void
+xlib_cell_display_surface(struct xmesa_buffer *b, struct pipe_surface *surf)
+{
+ XImage *ximage;
+ struct xm_buffer *xm_buf = xm_buffer(
+ cell_texture(surf->texture)->buffer);
+ const uint tilesPerRow = (surf->width + TILE_SIZE - 1) / TILE_SIZE;
+ uint x, y;
+
+ ximage = b->tempImage;
+
+ /* check that the XImage has been previously initialized */
+ assert(ximage->format);
+ assert(ximage->bitmap_unit);
+
+ /* update XImage's fields */
+ ximage->width = TILE_SIZE;
+ ximage->height = TILE_SIZE;
+ ximage->bytes_per_line = TILE_SIZE * 4;
+
+ for (y = 0; y < surf->height; y += TILE_SIZE) {
+ for (x = 0; x < surf->width; x += TILE_SIZE) {
+ uint tmpTile[TILE_SIZE * TILE_SIZE];
+ int tx = x / TILE_SIZE;
+ int ty = y / TILE_SIZE;
+ int offset = ty * tilesPerRow + tx;
+ int w = TILE_SIZE;
+ int h = TILE_SIZE;
+
+ if (y + h > surf->height)
+ h = surf->height - y;
+ if (x + w > surf->width)
+ w = surf->width - x;
+
+ /* offset in pixels */
+ offset *= TILE_SIZE * TILE_SIZE;
+
+ /* twiddle from ximage buffer to temp tile */
+ twiddle_tile((uint *) xm_buf->data + offset, tmpTile);
+ /* display temp tile data */
+ ximage->data = (char *) tmpTile;
+ XPutImage(b->xm_visual->display, b->drawable, b->gc,
+ ximage, 0, 0, x, y, w, h);
+ }
+ }
+}
+
+
+
+
+
+static void
+xm_flush_frontbuffer(struct pipe_winsys *pws,
+ struct pipe_surface *surf,
+ void *context_private)
+{
+ /*
+ * The front color buffer is actually just another XImage buffer.
+ * This function copies that XImage to the actual X Window.
+ */
+ XMesaContext xmctx = (XMesaContext) context_private;
+ xlib_cell_display_surface(xmctx->xm_buffer, surf);
+}
+
+
+
+static const char *
+xm_get_name(struct pipe_winsys *pws)
+{
+ return "Xlib/Cell";
+}
+
+
+static struct pipe_buffer *
+xm_buffer_create(struct pipe_winsys *pws,
+ unsigned alignment,
+ unsigned usage,
+ unsigned size)
+{
+ struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
+
+ buffer->base.refcount = 1;
+ buffer->base.alignment = alignment;
+ buffer->base.usage = usage;
+ buffer->base.size = size;
+
+
+ if (buffer->data == NULL) {
+ buffer->shm = 0;
+
+ /* align to 16-byte multiple for Cell */
+ buffer->data = align_malloc(size, max(alignment, 16));
+ }
+
+ return &buffer->base;
+}
+
+
+/**
+ * Create buffer which wraps user-space data.
+ */
+static struct pipe_buffer *
+xm_user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
+{
+ struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
+ buffer->base.refcount = 1;
+ buffer->base.size = bytes;
+ buffer->userBuffer = TRUE;
+ buffer->data = ptr;
+ buffer->shm = 0;
+
+ return &buffer->base;
+}
+
+
+
+/**
+ * Round n up to next multiple.
+ */
+static INLINE unsigned
+round_up(unsigned n, unsigned multiple)
+{
+ return (n + multiple - 1) & ~(multiple - 1);
+}
+
+static struct pipe_buffer *
+xm_surface_buffer_create(struct pipe_winsys *winsys,
+ unsigned width, unsigned height,
+ enum pipe_format format,
+ unsigned usage,
+ unsigned *stride)
+{
+ const unsigned alignment = 64;
+ struct pipe_format_block block;
+ unsigned nblocksx, nblocksy;
+
+ pf_get_block(format, &block);
+ nblocksx = pf_get_nblocksx(&block, width);
+ nblocksy = pf_get_nblocksy(&block, height);
+ *stride = round_up(nblocksx * block.size, alignment);
+
+ return winsys->buffer_create(winsys, alignment,
+ usage,
+ /* XXX a bit of a hack */
+ *stride * round_up(nblocksy, TILE_SIZE));
+}
+
+
+/*
+ * Fence functions - basically nothing to do, as we don't create any actual
+ * fence objects.
+ */
+
+static void
+xm_fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr,
+ struct pipe_fence_handle *fence)
+{
+}
+
+
+static int
+xm_fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+ unsigned flag)
+{
+ return 0;
+}
+
+
+static int
+xm_fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+ unsigned flag)
+{
+ return 0;
+}
+
+
+
+static struct pipe_winsys *
+xlib_create_cell_winsys( void )
+{
+ static struct xmesa_pipe_winsys *ws = NULL;
+
+ if (!ws) {
+ ws = CALLOC_STRUCT(xmesa_pipe_winsys);
+
+ /* Fill in this struct with callbacks that pipe will need to
+ * communicate with the window system, buffer manager, etc.
+ */
+ ws->base.buffer_create = xm_buffer_create;
+ ws->base.user_buffer_create = xm_user_buffer_create;
+ ws->base.buffer_map = xm_buffer_map;
+ ws->base.buffer_unmap = xm_buffer_unmap;
+ ws->base.buffer_destroy = xm_buffer_destroy;
+
+ ws->base.surface_buffer_create = xm_surface_buffer_create;
+
+ ws->base.fence_reference = xm_fence_reference;
+ ws->base.fence_signalled = xm_fence_signalled;
+ ws->base.fence_finish = xm_fence_finish;
+
+ ws->base.flush_frontbuffer = xm_flush_frontbuffer;
+ ws->base.get_name = xm_get_name;
+ }
+
+ return &ws->base;
+}
+
+
+static struct pipe_screen *
+xlib_create_cell_screen( struct pipe_winsys *pws )
+{
+ struct pipe_winsys *winsys;
+ struct pipe_screen *screen;
+
+ winsys = xlib_create_cell_winsys();
+ if (winsys == NULL)
+ return NULL;
+
+ screen = cell_create_screen(winsys);
+ if (screen == NULL)
+ goto fail;
+
+ return screen;
+
+fail:
+ if (winsys)
+ winsys->destroy( winsys );
+
+ return NULL;
+}
+
+
+static struct pipe_context *
+xlib_create_cell_context( struct pipe_screen *screen,
+ void *priv )
+{
+ struct pipe_context *pipe;
+
+
+ /* This takes a cell_winsys pointer, but probably that should be
+ * created and stored at screen creation, not context creation.
+ *
+ * The actual cell_winsys value isn't used for anything, so just
+ * passing NULL for now.
+ */
+ pipe = cell_create_context( screen, NULL);
+ if (pipe == NULL)
+ goto fail;
+
+ pipe->priv = priv;
+
+ return pipe;
+
+fail:
+ return NULL;
+}
+
+struct xm_driver xlib_cell_driver =
+{
+ .create_pipe_screen = xlib_create_cell_screen,
+ .create_pipe_context = xlib_create_cell_context,
+ .display_surface = xlib_cell_display_surface,
+};
+
+#else
+
+struct xm_driver xlib_cell_driver =
+{
+ .create_pipe_screen = NULL,
+ .create_pipe_context = NULL,
+ .display_surface = NULL,
+};
+
+#endif
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