Hide texture layout details from the state tracker.

pipe->get_tex_surface() has to be used for access to texture image data.

1 files changed, 109 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_texture.h b/src/mesa/state_tracker/st_texture.h
new file mode 100644
index 0000000000..b25e3f3f3b
--- /dev/null
+++ b/src/mesa/state_tracker/st_texture.h
@@ -0,0 +1,109 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+#ifndef ST_TEXTURE_H
+#define ST_TEXTURE_H
+
+
+#include "main/mtypes.h"
+
+struct pipe_context;
+struct pipe_texture;
+struct pipe_region;
+
+
+extern struct pipe_texture *
+st_texture_create(struct st_context *st,
+                  unsigned target,
+		  unsigned format,
+                  GLenum internal_format,
+                  GLuint first_level,
+                  GLuint last_level,
+                  GLuint width0,
+                  GLuint height0,
+                  GLuint depth0,
+                  GLuint compress_byte);
+
+
+/* Check if an image fits an existing texture
+ */
+extern GLboolean
+st_texture_match_image(struct pipe_texture *pt,
+                       struct gl_texture_image *image,
+                       GLuint face, GLuint level);
+
+/* Return a pointer to an image within a texture.  Return image stride as
+ * well.
+ */
+extern GLubyte *
+st_texture_image_map(struct st_context *st,
+                     struct st_texture_image *stImage,
+		     GLuint zoffset);
+
+extern void
+st_texture_image_unmap(struct st_context *st,
+                       struct st_texture_image *stImage);
+
+
+/* Return pointers to each 2d slice within an image.  Indexed by depth
+ * value.
+ */
+extern const GLuint *
+st_texture_depth_offsets(struct pipe_texture *pt, GLuint level);
+
+
+/* Return the linear offset of an image relative to the start of its region:
+ */
+extern GLuint
+st_texture_image_offset(const struct pipe_texture *pt,
+                        GLuint face, GLuint level);
+
+extern GLuint
+st_texture_texel_offset(const struct pipe_texture * pt,
+                        GLuint face, GLuint level,
+                        GLuint col, GLuint row, GLuint img);
+
+
+/* Upload an image into a texture
+ */
+extern void
+st_texture_image_data(struct pipe_context *pipe,
+                      struct pipe_texture *dst,
+                      GLuint face, GLuint level, void *src,
+                      GLuint src_row_pitch, GLuint src_image_pitch);
+
+
+/* Copy an image between two textures
+ */
+extern void
+st_texture_image_copy(struct pipe_context *pipe,
+                      struct pipe_texture *dst,
+                      GLuint face, GLuint level,
+                      struct pipe_texture *src);
+
+
+#endif