120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/**************************************************************************
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*
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* Copyright 2010 Christian König
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef vl_idct_h
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#define vl_idct_h
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#include "pipe/p_state.h"
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#include "tgsi/tgsi_ureg.h"
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/* shader based inverse distinct cosinus transformation
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* expect usage of vl_vertex_buffers as a todo list
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*/
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struct vl_idct
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{
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struct pipe_context *pipe;
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unsigned buffer_width;
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unsigned buffer_height;
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unsigned nr_of_render_targets;
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void *rs_state;
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void *blend;
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void *samplers[2];
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void *vs_mismatch, *fs_mismatch;
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void *vs, *fs;
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struct pipe_sampler_view *matrix;
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struct pipe_sampler_view *transpose;
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};
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/* a set of buffers to work with */
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struct vl_idct_buffer
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{
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struct pipe_viewport_state viewport_mismatch;
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struct pipe_viewport_state viewport;
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struct pipe_framebuffer_state fb_state_mismatch;
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struct pipe_framebuffer_state fb_state;
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union
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{
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struct pipe_sampler_view *all[4];
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struct pipe_sampler_view *stage[2][2];
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struct {
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struct pipe_sampler_view *source, *matrix;
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struct pipe_sampler_view *intermediate, *transpose;
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} individual;
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} sampler_views;
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};
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/* upload the idct matrix, which can be shared by all idct instances of a pipe */
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struct pipe_sampler_view *
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vl_idct_upload_matrix(struct pipe_context *pipe, float scale);
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void
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vl_idct_stage2_vert_shader(struct vl_idct *idct, struct ureg_program *shader,
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unsigned first_output, struct ureg_dst tex);
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void
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vl_idct_stage2_frag_shader(struct vl_idct *idct, struct ureg_program *shader,
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unsigned first_input, struct ureg_dst fragment);
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/* init an idct instance */
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bool
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vl_idct_init(struct vl_idct *idct, struct pipe_context *pipe,
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unsigned buffer_width, unsigned buffer_height,
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unsigned nr_of_render_targets,
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struct pipe_sampler_view *matrix,
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struct pipe_sampler_view *transpose);
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/* destroy an idct instance */
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void
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vl_idct_cleanup(struct vl_idct *idct);
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/* init a buffer assosiated with agiven idct instance */
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bool
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vl_idct_init_buffer(struct vl_idct *idct, struct vl_idct_buffer *buffer,
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struct pipe_sampler_view *source,
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struct pipe_sampler_view *intermediate);
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/* cleanup a buffer of an idct instance */
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void
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vl_idct_cleanup_buffer(struct vl_idct_buffer *buffer);
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/* flush the buffer and start rendering, vertex buffers needs to be setup before calling this */
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void
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vl_idct_flush(struct vl_idct *idct, struct vl_idct_buffer *buffer, unsigned num_verts);
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void
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vl_idct_prepare_stage2(struct vl_idct *idct, struct vl_idct_buffer *buffer);
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#endif
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