static void r600_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
unsigned offset, unsigned size, unsigned value)
{
struct r600_context *rctx = (struct r600_context*)ctx;
if (rctx->screen->b.has_cp_dma &&
rctx->b.chip_class >= EVERGREEN &&
offset % 4 == 0 && size % 4 == 0) {
evergreen_cp_dma_clear_buffer(rctx, dst, offset, size, value);
} else if (rctx->screen->b.has_streamout && offset % 4 == 0 && size % 4 == 0) {
union pipe_color_union clear_value;
clear_value.ui[0] = value;
r600_blitter_begin(ctx, R600_DISABLE_RENDER_COND);
util_blitter_clear_buffer(rctx->blitter, dst, offset, size,
1, &clear_value);
r600_blitter_end(ctx);
} else {
uint32_t *map = r600_buffer_map_sync_with_rings(&rctx->b, r600_resource(dst),
PIPE_TRANSFER_WRITE);
size /= 4;
for (unsigned i = 0; i < size; i++)
*map++ = value;
}
}
static void r600_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
unsigned offset, unsigned size, unsigned char value)
{
struct r600_context *rctx = (struct r600_context*)ctx;
uint32_t v = value;
if (rctx->screen->has_cp_dma &&
rctx->b.chip_class >= EVERGREEN &&
offset % 4 == 0 && size % 4 == 0) {
uint32_t clear_value = v | (v << 8) | (v << 16) | (v << 24);
evergreen_cp_dma_clear_buffer(rctx, dst, offset, size, clear_value);
} else if (rctx->screen->has_streamout && offset % 4 == 0 && size % 4 == 0) {
union pipe_color_union clear_value;
clear_value.ui[0] = v | (v << 8) | (v << 16) | (v << 24);
r600_flag_resource_cache_flush(rctx, dst);
r600_blitter_begin(ctx, R600_DISABLE_RENDER_COND);
util_blitter_clear_buffer(rctx->blitter, dst, offset, size,
1, &clear_value);
r600_blitter_end(ctx);
/* Flush again in case the 3D engine has been prefetching the resource. */
r600_flag_resource_cache_flush(rctx, dst);
} else {
char *map = r600_buffer_mmap_sync_with_rings(rctx, r600_resource(dst),
PIPE_TRANSFER_WRITE);
memset(map + offset, value, size);
}
}
