1 /************************************************************************** 2 * 3 * Copyright 2010 Christian König 4 * All Rights Reserved. 5 * 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: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 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. 25 * 26 **************************************************************************/ 27 28 #ifndef vl_idct_h 29 #define vl_idct_h 30 31 #include "pipe/p_state.h" 32 33 #include "tgsi/tgsi_ureg.h" 34 35 /* shader based inverse distinct cosinus transformation 36 * expect usage of vl_vertex_buffers as a todo list 37 */ 38 struct vl_idct 39 { 40 struct pipe_context *pipe; 41 42 unsigned buffer_width; 43 unsigned buffer_height; 44 unsigned nr_of_render_targets; 45 46 void *rs_state; 47 void *blend; 48 49 void *samplers[2]; 50 51 void *vs_mismatch, *fs_mismatch; 52 void *vs, *fs; 53 54 struct pipe_sampler_view *matrix; 55 struct pipe_sampler_view *transpose; 56 }; 57 58 /* a set of buffers to work with */ 59 struct vl_idct_buffer 60 { 61 struct pipe_viewport_state viewport_mismatch; 62 struct pipe_viewport_state viewport; 63 64 struct pipe_framebuffer_state fb_state_mismatch; 65 struct pipe_framebuffer_state fb_state; 66 67 union 68 { 69 struct pipe_sampler_view *all[4]; 70 struct pipe_sampler_view *stage[2][2]; 71 struct { 72 struct pipe_sampler_view *source, *matrix; 73 struct pipe_sampler_view *intermediate, *transpose; 74 } individual; 75 } sampler_views; 76 }; 77 78 /* upload the idct matrix, which can be shared by all idct instances of a pipe */ 79 struct pipe_sampler_view * 80 vl_idct_upload_matrix(struct pipe_context *pipe, float scale); 81 82 void 83 vl_idct_stage2_vert_shader(struct vl_idct *idct, struct ureg_program *shader, 84 unsigned first_output, struct ureg_dst tex); 85 86 void 87 vl_idct_stage2_frag_shader(struct vl_idct *idct, struct ureg_program *shader, 88 unsigned first_input, struct ureg_dst fragment); 89 90 /* init an idct instance */ 91 bool 92 vl_idct_init(struct vl_idct *idct, struct pipe_context *pipe, 93 unsigned buffer_width, unsigned buffer_height, 94 unsigned nr_of_render_targets, 95 struct pipe_sampler_view *matrix, 96 struct pipe_sampler_view *transpose); 97 98 /* destroy an idct instance */ 99 void 100 vl_idct_cleanup(struct vl_idct *idct); 101 102 /* init a buffer assosiated with agiven idct instance */ 103 bool 104 vl_idct_init_buffer(struct vl_idct *idct, struct vl_idct_buffer *buffer, 105 struct pipe_sampler_view *source, 106 struct pipe_sampler_view *intermediate); 107 108 /* cleanup a buffer of an idct instance */ 109 void 110 vl_idct_cleanup_buffer(struct vl_idct_buffer *buffer); 111 112 /* flush the buffer and start rendering, vertex buffers needs to be setup before calling this */ 113 void 114 vl_idct_flush(struct vl_idct *idct, struct vl_idct_buffer *buffer, unsigned num_verts); 115 116 void 117 vl_idct_prepare_stage2(struct vl_idct *idct, struct vl_idct_buffer *buffer); 118 119 #endif 120