1 /**************************************************************************
3 * Copyright 2010 Christian König
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
31 #include <pipe/p_state.h>
33 /* shader based inverse distinct cosinus transformation
34 * expect usage of vl_vertex_buffers as a todo list
38 struct pipe_context
*pipe
;
40 unsigned buffer_width
;
41 unsigned buffer_height
;
42 unsigned blocks_x
, blocks_y
;
48 void *matrix_vs
, *transpose_vs
;
49 void *matrix_fs
, *transpose_fs
;
51 struct pipe_sampler_view
*matrix
;
54 /* a set of buffers to work with */
57 struct pipe_viewport_state viewport
[2];
58 struct pipe_framebuffer_state fb_state
[2];
62 struct pipe_sampler_view
*all
[4];
63 struct pipe_sampler_view
*stage
[2][2];
65 struct pipe_sampler_view
*matrix
, *source
;
66 struct pipe_sampler_view
*transpose
, *intermediate
;
70 struct pipe_transfer
*tex_transfer
;
74 /* upload the idct matrix, which can be shared by all idct instances of a pipe */
75 struct pipe_sampler_view
*vl_idct_upload_matrix(struct pipe_context
*pipe
);
77 /* init an idct instance */
78 bool vl_idct_init(struct vl_idct
*idct
, struct pipe_context
*pipe
,
79 unsigned buffer_width
, unsigned buffer_height
,
80 unsigned blocks_x
, unsigned blocks_y
,
81 struct pipe_sampler_view
*matrix
);
83 /* destroy an idct instance */
84 void vl_idct_cleanup(struct vl_idct
*idct
);
86 /* init a buffer assosiated with agiven idct instance */
87 bool vl_idct_init_buffer(struct vl_idct
*idct
, struct vl_idct_buffer
*buffer
,
88 struct pipe_sampler_view
*source
, struct pipe_surface
*destination
);
90 /* cleanup a buffer of an idct instance */
91 void vl_idct_cleanup_buffer(struct vl_idct
*idct
, struct vl_idct_buffer
*buffer
);
93 /* map a buffer for use with vl_idct_add_block */
94 void vl_idct_map_buffers(struct vl_idct
*idct
, struct vl_idct_buffer
*buffer
);
96 /* add an block of to be tranformed data a the given x and y coordinate */
97 void vl_idct_add_block(struct vl_idct_buffer
*buffer
, unsigned x
, unsigned y
, short *block
);
99 /* unmaps the buffers before flushing */
100 void vl_idct_unmap_buffers(struct vl_idct
*idct
, struct vl_idct_buffer
*buffer
);
102 /* flush the buffer and start rendering, vertex buffers needs to be setup before calling this */
103 void vl_idct_flush(struct vl_idct
*idct
, struct vl_idct_buffer
*buffer
, unsigned num_verts
);