-#include "cell_surface.h"
-
-
-/* Upload data to a rectangular sub-region. Lots of choices how to do this:
- *
- * - memcpy by span to current destination
- * - upload data as new buffer and blit
- *
- * Currently always memcpy.
- */
-static void
-cell_surface_data(struct pipe_context *pipe,
- struct pipe_surface *dst,
- unsigned dstx, unsigned dsty,
- const void *src, unsigned src_pitch,
- unsigned srcx, unsigned srcy,
- unsigned width, unsigned height)
-{
- pipe_copy_rect(pipe_surface_map(dst),
- dst->cpp,
- dst->pitch,
- dstx, dsty, width, height, src, src_pitch, srcx, srcy);
-
- pipe_surface_unmap(dst);
-}
-
-
-static void
-cell_surface_copy(struct pipe_context *pipe,
- unsigned do_flip,
- struct pipe_surface *dst,
- unsigned dstx, unsigned dsty,
- struct pipe_surface *src,
- unsigned srcx, unsigned srcy,
- unsigned width, unsigned height)
-{
- assert( dst->cpp == src->cpp );
-
- pipe_copy_rect(pipe_surface_map(dst),
- dst->cpp,
- dst->pitch,
- dstx, dsty,
- width, height,
- pipe_surface_map(src),
- do_flip ? -src->pitch : src->pitch,
- srcx, do_flip ? height - 1 - srcy : srcy);
-
- pipe_surface_unmap(src);
- pipe_surface_unmap(dst);
-}
-
-
-static void *
-get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y)
-{
- return (char *)dst_map + (y * dst->pitch + x) * dst->cpp;
-}
-
-
-#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
-
-
-/**
- * Fill a rectangular sub-region. Need better logic about when to
- * push buffers into AGP - will currently do so whenever possible.
- */
-static void
-cell_surface_fill(struct pipe_context *pipe,
- struct pipe_surface *dst,
- unsigned dstx, unsigned dsty,
- unsigned width, unsigned height, unsigned value)
-{
- unsigned i, j;
- void *dst_map = pipe_surface_map(dst);
-
- assert(dst->pitch > 0);
- assert(width <= dst->pitch);
-
- switch (dst->cpp) {
- case 1:
- {
- ubyte *row = get_pointer(dst, dst_map, dstx, dsty);
- for (i = 0; i < height; i++) {
- memset(row, value, width);
- row += dst->pitch;
- }
- }
- break;
- case 2:
- {
- ushort *row = get_pointer(dst, dst_map, dstx, dsty);
- for (i = 0; i < height; i++) {
- for (j = 0; j < width; j++)
- row[j] = (ushort) value;
- row += dst->pitch;
- }
- }
- break;
- case 4:
- {
- unsigned *row = get_pointer(dst, dst_map, dstx, dsty);
- for (i = 0; i < height; i++) {
- for (j = 0; j < width; j++)
- row[j] = value;
- row += dst->pitch;
- }
- }
- break;
- case 8:
- {
- /* expand the 4-byte clear value to an 8-byte value */
- ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty);
- ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff);
- ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff);
- ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff);
- ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff);
- val0 = (val0 << 8) | val0;
- val1 = (val1 << 8) | val1;
- val2 = (val2 << 8) | val2;
- val3 = (val3 << 8) | val3;
- for (i = 0; i < height; i++) {
- for (j = 0; j < width; j++) {
- row[j*4+0] = val0;
- row[j*4+1] = val1;
- row[j*4+2] = val2;
- row[j*4+3] = val3;
- }
- row += dst->pitch * 4;
- }
- }
- break;
- default:
- assert(0);
- break;
- }
-
- pipe_surface_unmap( dst );
-}