1 files changed, 116 insertions, 0 deletions
diff --git a/src/gallium/winsys/i915/sw/i915_sw_buffer.c b/src/gallium/winsys/i915/sw/i915_sw_buffer.c
new file mode 100644
index 0000000000..9a27da5e1a
--- /dev/null
+++ b/src/gallium/winsys/i915/sw/i915_sw_buffer.c
@@ -0,0 +1,116 @@
+
+#include "i915_sw_winsys.h"
+#include "util/u_memory.h"
+
+static struct i915_winsys_buffer *
+i915_sw_buffer_create(struct i915_winsys *iws,
+                      unsigned size, unsigned alignment,
+                      enum i915_winsys_buffer_type type)
+{
+   struct i915_sw_buffer *buf = CALLOC_STRUCT(i915_sw_buffer);
+   char *name;
+
+   if (!buf)
+      return NULL;
+
+   if (type == I915_NEW_TEXTURE) {
+      name = "gallium3d_texture";
+   } else if (type == I915_NEW_VERTEX) {
+      name = "gallium3d_vertex";
+   } else if (type == I915_NEW_SCANOUT) {
+      name = "gallium3d_scanout";
+   } else {
+      assert(0);
+      name = "gallium3d_unknown";
+   }
+
+   buf->magic = 0xDEAD1337;
+   buf->name = name;
+   buf->type = type;
+   buf->ptr = calloc(size, 1);
+
+   if (!buf->ptr)
+      goto err;
+
+   return (struct i915_winsys_buffer *)buf;
+
+err:
+   assert(0);
+   FREE(buf);
+   return NULL;
+}
+
+static int
+i915_sw_buffer_set_fence_reg(struct i915_winsys *iws,
+                               struct i915_winsys_buffer *buffer,
+                               unsigned stride,
+                               enum i915_winsys_buffer_tile tile)
+{
+   struct i915_sw_buffer *buf = i915_sw_buffer(buffer);
+
+   if (tile != I915_TILE_NONE) {
+      assert(buf->map_count == 0);
+   }
+
+   buf->tile = tile;
+
+   return 0;
+}
+
+static void *
+i915_sw_buffer_map(struct i915_winsys *iws,
+                   struct i915_winsys_buffer *buffer,
+                   boolean write)
+{
+   struct i915_sw_buffer *buf = i915_sw_buffer(buffer);
+
+   buf->map_count += 1;
+   return buf->ptr;
+}
+
+static void
+i915_sw_buffer_unmap(struct i915_winsys *iws,
+                     struct i915_winsys_buffer *buffer)
+{
+   struct i915_sw_buffer *buf = i915_sw_buffer(buffer);
+
+   buf->map_count -= 1;
+}
+
+static int
+i915_sw_buffer_write(struct i915_winsys *iws,
+                     struct i915_winsys_buffer *buffer,
+                     size_t offset,
+                     size_t size,
+                     const void *data)
+{
+   struct i915_sw_buffer *buf = i915_sw_buffer(buffer);
+
+   memcpy(buf->ptr + offset, data, size);
+   return 0;
+}
+
+static void
+i915_sw_buffer_destroy(struct i915_winsys *iws,
+                       struct i915_winsys_buffer *buffer)
+{
+   struct i915_sw_buffer *buf = i915_sw_buffer(buffer);
+
+#ifdef DEBUG
+   buf->magic = 0;
+#endif
+
+   FREE(buf->ptr);
+   FREE(buf);
+}
+
+void
+i915_sw_winsys_init_buffer_functions(struct i915_sw_winsys *isws)
+{
+   isws->base.buffer_create = i915_sw_buffer_create;
+   isws->base.buffer_set_fence_reg = i915_sw_buffer_set_fence_reg;
+   isws->base.buffer_map = i915_sw_buffer_map;
+   isws->base.buffer_unmap = i915_sw_buffer_unmap;
+   isws->base.buffer_write = i915_sw_buffer_write;
+   isws->base.buffer_destroy = i915_sw_buffer_destroy;
+}