diff options
Diffstat (limited to 'src/gallium/winsys/xlib/xlib_cell.c')
-rw-r--r-- | src/gallium/winsys/xlib/xlib_cell.c | 438 |
1 files changed, 438 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 index 0000000000..40bcdfe42a --- /dev/null +++ b/src/gallium/winsys/xlib/xlib_cell.c @@ -0,0 +1,438 @@ +/************************************************************************** + * + * 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; + if (xmctx) + 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 |