| /************************************************************************** |
| * |
| * Copyright 2010 Christian König |
| * 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 VMWARE 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 vl_idct_h |
| #define vl_idct_h |
| |
| #include "pipe/p_state.h" |
| |
| #include "tgsi/tgsi_ureg.h" |
| |
| /* shader based inverse distinct cosinus transformation |
| * expect usage of vl_vertex_buffers as a todo list |
| */ |
| struct vl_idct |
| { |
| struct pipe_context *pipe; |
| |
| unsigned buffer_width; |
| unsigned buffer_height; |
| unsigned nr_of_render_targets; |
| |
| void *rs_state; |
| void *blend; |
| |
| void *samplers[2]; |
| |
| void *vs_mismatch, *fs_mismatch; |
| void *vs, *fs; |
| |
| struct pipe_sampler_view *matrix; |
| struct pipe_sampler_view *transpose; |
| }; |
| |
| /* a set of buffers to work with */ |
| struct vl_idct_buffer |
| { |
| struct pipe_viewport_state viewport_mismatch; |
| struct pipe_viewport_state viewport; |
| |
| struct pipe_framebuffer_state fb_state_mismatch; |
| struct pipe_framebuffer_state fb_state; |
| |
| union |
| { |
| struct pipe_sampler_view *all[4]; |
| struct pipe_sampler_view *stage[2][2]; |
| struct { |
| struct pipe_sampler_view *source, *matrix; |
| struct pipe_sampler_view *intermediate, *transpose; |
| } individual; |
| } sampler_views; |
| }; |
| |
| /* upload the idct matrix, which can be shared by all idct instances of a pipe */ |
| struct pipe_sampler_view * |
| vl_idct_upload_matrix(struct pipe_context *pipe, float scale); |
| |
| void |
| vl_idct_stage2_vert_shader(struct vl_idct *idct, struct ureg_program *shader, |
| unsigned first_output, struct ureg_dst tex); |
| |
| void |
| vl_idct_stage2_frag_shader(struct vl_idct *idct, struct ureg_program *shader, |
| unsigned first_input, struct ureg_dst fragment); |
| |
| /* init an idct instance */ |
| bool |
| vl_idct_init(struct vl_idct *idct, struct pipe_context *pipe, |
| unsigned buffer_width, unsigned buffer_height, |
| unsigned nr_of_render_targets, |
| struct pipe_sampler_view *matrix, |
| struct pipe_sampler_view *transpose); |
| |
| /* destroy an idct instance */ |
| void |
| vl_idct_cleanup(struct vl_idct *idct); |
| |
| /* init a buffer assosiated with agiven idct instance */ |
| bool |
| vl_idct_init_buffer(struct vl_idct *idct, struct vl_idct_buffer *buffer, |
| struct pipe_sampler_view *source, |
| struct pipe_sampler_view *intermediate); |
| |
| /* cleanup a buffer of an idct instance */ |
| void |
| vl_idct_cleanup_buffer(struct vl_idct_buffer *buffer); |
| |
| /* flush the buffer and start rendering, vertex buffers needs to be setup before calling this */ |
| void |
| vl_idct_flush(struct vl_idct *idct, struct vl_idct_buffer *buffer, unsigned num_verts); |
| |
| void |
| vl_idct_prepare_stage2(struct vl_idct *idct, struct vl_idct_buffer *buffer); |
| |
| #endif |