r300g: move r300_transfer to separate files

1 files changed, 101 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_transfer.c b/src/gallium/drivers/r300/r300_transfer.c
new file mode 100644
index 0000000000..fa48688db2
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_transfer.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
+ * Copyright 2010 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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
+ * on 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 above copyright notice and this permission notice (including the next
+ * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#include "r300_context.h"
+#include "r300_transfer.h"
+#include "r300_texture.h"
+#include "r300_screen.h"
+
+#include "util/u_memory.h"
+#include "util/u_format.h"
+
+static struct pipe_transfer*
+r300_get_tex_transfer(struct pipe_screen *screen,
+                      struct pipe_texture *texture,
+                      unsigned face, unsigned level, unsigned zslice,
+                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
+                      unsigned w, unsigned h)
+{
+    struct r300_texture *tex = (struct r300_texture *)texture;
+    struct r300_transfer *trans;
+    struct r300_screen *rscreen = r300_screen(screen);
+    unsigned offset;
+
+    offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
+
+    trans = CALLOC_STRUCT(r300_transfer);
+    if (trans) {
+        pipe_texture_reference(&trans->transfer.texture, texture);
+        trans->transfer.x = x;
+        trans->transfer.y = y;
+        trans->transfer.width = w;
+        trans->transfer.height = h;
+        trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
+        trans->transfer.usage = usage;
+        trans->transfer.zslice = zslice;
+        trans->transfer.face = face;
+
+        trans->offset = offset;
+    }
+    return &trans->transfer;
+}
+
+static void r300_tex_transfer_destroy(struct pipe_transfer *trans)
+{
+   pipe_texture_reference(&trans->texture, NULL);
+   FREE(trans);
+}
+
+static void* r300_transfer_map(struct pipe_screen *screen,
+                              struct pipe_transfer *transfer)
+{
+    struct r300_texture *tex = (struct r300_texture*)transfer->texture;
+    char *map;
+    enum pipe_format format = tex->tex.format;
+
+    map = pipe_buffer_map(screen, tex->buffer,
+                          pipe_transfer_buffer_flags(transfer));
+
+    if (!map) {
+        return NULL;
+    }
+
+    return map + r300_transfer(transfer)->offset +
+        transfer->y / util_format_get_blockheight(format) * transfer->stride +
+        transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
+}
+
+static void r300_transfer_unmap(struct pipe_screen *screen,
+                                struct pipe_transfer *transfer)
+{
+    struct r300_texture *tex = (struct r300_texture*)transfer->texture;
+    pipe_buffer_unmap(screen, tex->buffer);
+}
+
+void r300_init_screen_transfer_functions(struct pipe_screen *screen)
+{
+    screen->get_tex_transfer = r300_get_tex_transfer;
+    screen->tex_transfer_destroy = r300_tex_transfer_destroy;
+    screen->transfer_map = r300_transfer_map;
+    screen->transfer_unmap = r300_transfer_unmap;
+}