/**************************************************************************
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*
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* Copyright 2013 Grigori Goronzy <greg@chown.ath.cx>.
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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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/*
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* References:
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*
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* Lin, S. F., Chang, Y. L., & Chen, L. G. (2003).
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* Motion adaptive interpolation with horizontal motion detection for deinterlacing.
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* Consumer Electronics, IEEE Transactions on, 49(4), 1256-1265.
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*
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* Pei-Yin, C. H. E. N., & Yao-Hsien, L. A. I. (2007).
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* A low-complexity interpolation method for deinterlacing.
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* IEICE transactions on information and systems, 90(2), 606-608.
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*
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*/
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#include <stdio.h>
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#include "pipe/p_context.h"
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#include "tgsi/tgsi_ureg.h"
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#include "util/u_draw.h"
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#include "util/u_memory.h"
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#include "util/u_math.h"
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#include "util/u_format.h"
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#include "vl_types.h"
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#include "vl_video_buffer.h"
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#include "vl_vertex_buffers.h"
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#include "vl_deint_filter.h"
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enum VS_OUTPUT
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{
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VS_O_VPOS = 0,
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VS_O_VTEX = 0
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};
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static void *
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create_vert_shader(struct vl_deint_filter *filter)
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{
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struct ureg_program *shader;
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struct ureg_src i_vpos;
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struct ureg_dst o_vpos, o_vtex;
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shader = ureg_create(PIPE_SHADER_VERTEX);
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if (!shader)
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return NULL;
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i_vpos = ureg_DECL_vs_input(shader, 0);
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o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
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o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX);
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ureg_MOV(shader, o_vpos, i_vpos);
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ureg_MOV(shader, o_vtex, i_vpos);
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ureg_END(shader);
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return ureg_create_shader_and_destroy(shader, filter->pipe);
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}
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static void *
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create_copy_frag_shader(struct vl_deint_filter *filter, unsigned field)
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{
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struct ureg_program *shader;
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struct ureg_src i_vtex;
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struct ureg_src sampler;
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struct ureg_dst o_fragment;
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struct ureg_dst t_tex;
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shader = ureg_create(PIPE_SHADER_FRAGMENT);
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if (!shader) {
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return NULL;
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}
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t_tex = ureg_DECL_temporary(shader);
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i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR);
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sampler = ureg_DECL_sampler(shader, 2);
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o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
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ureg_MOV(shader, t_tex, i_vtex);
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if (field) {
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ureg_MOV(shader, ureg_writemask(t_tex, TGSI_WRITEMASK_ZW),
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ureg_imm4f(shader, 0, 0, 1.0f, 0));
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} else {
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ureg_MOV(shader, ureg_writemask(t_tex, TGSI_WRITEMASK_ZW),
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ureg_imm1f(shader, 0));
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}
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ureg_TEX(shader, o_fragment, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_tex), sampler);
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ureg_release_temporary(shader, t_tex);
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ureg_END(shader);
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return ureg_create_shader_and_destroy(shader, filter->pipe);
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}
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static void *
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create_deint_frag_shader(struct vl_deint_filter *filter, unsigned field,
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struct vertex2f *sizes, bool spatial_filter)
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{
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struct ureg_program *shader;
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struct ureg_src i_vtex;
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struct ureg_src sampler_cur;
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struct ureg_src sampler_prevprev;
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struct ureg_src sampler_prev;
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struct ureg_src sampler_next;
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struct ureg_dst o_fragment;
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struct ureg_dst t_tex;
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struct ureg_dst t_comp_top, t_comp_bot;
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struct ureg_dst t_diff;
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struct ureg_dst t_a, t_b;
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struct ureg_dst t_weave, t_linear;
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shader = ureg_create(PIPE_SHADER_FRAGMENT);
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if (!shader) {
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return NULL;
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}
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t_tex = ureg_DECL_temporary(shader);
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t_comp_top = ureg_DECL_temporary(shader);
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t_comp_bot = ureg_DECL_temporary(shader);
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t_diff = ureg_DECL_temporary(shader);
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t_a = ureg_DECL_temporary(shader);
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t_b = ureg_DECL_temporary(shader);
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t_weave = ureg_DECL_temporary(shader);
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t_linear = ureg_DECL_temporary(shader);
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i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR);
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sampler_prevprev = ureg_DECL_sampler(shader, 0);
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sampler_prev = ureg_DECL_sampler(shader, 1);
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sampler_cur = ureg_DECL_sampler(shader, 2);
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sampler_next = ureg_DECL_sampler(shader, 3);
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o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
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// we don't care about ZW interpolation (allows better optimization)
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ureg_MOV(shader, t_tex, i_vtex);
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ureg_MOV(shader, ureg_writemask(t_tex, TGSI_WRITEMASK_ZW),
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ureg_imm1f(shader, 0));
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// sample between texels for cheap lowpass
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ureg_ADD(shader, t_comp_top, ureg_src(t_tex),
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ureg_imm4f(shader, sizes->x * 0.5f, sizes->y * -0.5f, 0, 0));
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ureg_ADD(shader, t_comp_bot, ureg_src(t_tex),
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ureg_imm4f(shader, sizes->x * -0.5f, sizes->y * 0.5f, 1.0f, 0));
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|
if (field == 0) {
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/* interpolating top field -> current field is a bottom field */
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// cur vs prev2
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ureg_TEX(shader, t_a, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_cur);
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ureg_TEX(shader, t_b, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_prevprev);
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ureg_ADD(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_X), ureg_src(t_a), ureg_negate(ureg_src(t_b)));
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// prev vs next
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ureg_TEX(shader, t_a, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_top), sampler_prev);
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ureg_TEX(shader, t_b, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_top), sampler_next);
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ureg_ADD(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_Y), ureg_src(t_a), ureg_negate(ureg_src(t_b)));
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} else {
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/* interpolating bottom field -> current field is a top field */
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// cur vs prev2
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ureg_TEX(shader, t_a, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_top), sampler_cur);
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ureg_TEX(shader, t_b, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_top), sampler_prevprev);
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ureg_ADD(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_X), ureg_src(t_a), ureg_negate(ureg_src(t_b)));
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// prev vs next
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ureg_TEX(shader, t_a, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_prev);
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ureg_TEX(shader, t_b, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_next);
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ureg_ADD(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_Y), ureg_src(t_a), ureg_negate(ureg_src(t_b)));
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}
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// absolute maximum of differences
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ureg_MAX(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_X), ureg_abs(ureg_src(t_diff)),
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ureg_scalar(ureg_abs(ureg_src(t_diff)), TGSI_SWIZZLE_Y));
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|
if (field == 0) {
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/* weave with prev top field */
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ureg_TEX(shader, t_weave, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_tex), sampler_prev);
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/* get linear interpolation from current bottom field */
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ureg_ADD(shader, t_comp_top, ureg_src(t_tex), ureg_imm4f(shader, 0, sizes->y * -1.0f, 1.0f, 0));
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ureg_TEX(shader, t_linear, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_top), sampler_cur);
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} else {
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/* weave with prev bottom field */
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ureg_ADD(shader, t_comp_bot, ureg_src(t_tex), ureg_imm4f(shader, 0, 0, 1.0f, 0));
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ureg_TEX(shader, t_weave, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_prev);
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/* get linear interpolation from current top field */
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ureg_ADD(shader, t_comp_bot, ureg_src(t_tex), ureg_imm4f(shader, 0, sizes->y * 1.0f, 0, 0));
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ureg_TEX(shader, t_linear, TGSI_TEXTURE_2D_ARRAY, ureg_src(t_comp_bot), sampler_cur);
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}
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// mix between weave and linear
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// fully weave if diff < 6 (0.02353), fully interpolate if diff > 14 (0.05490)
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ureg_ADD(shader, ureg_writemask(t_diff, TGSI_WRITEMASK_X), ureg_src(t_diff),
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ureg_imm4f(shader, -0.02353f, 0, 0, 0));
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ureg_MUL(shader, ureg_saturate(ureg_writemask(t_diff, TGSI_WRITEMASK_X)),
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ureg_src(t_diff), ureg_imm4f(shader, 31.8750f, 0, 0, 0));
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ureg_LRP(shader, ureg_writemask(t_tex, TGSI_WRITEMASK_X), ureg_src(t_diff),
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ureg_src(t_linear), ureg_src(t_weave));
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ureg_MOV(shader, o_fragment, ureg_scalar(ureg_src(t_tex), TGSI_SWIZZLE_X));
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ureg_release_temporary(shader, t_tex);
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ureg_release_temporary(shader, t_comp_top);
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ureg_release_temporary(shader, t_comp_bot);
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ureg_release_temporary(shader, t_diff);
|
ureg_release_temporary(shader, t_a);
|
ureg_release_temporary(shader, t_b);
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ureg_release_temporary(shader, t_weave);
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ureg_release_temporary(shader, t_linear);
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ureg_END(shader);
|
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return ureg_create_shader_and_destroy(shader, filter->pipe);
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}
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bool
|
vl_deint_filter_init(struct vl_deint_filter *filter, struct pipe_context *pipe,
|
unsigned video_width, unsigned video_height,
|
bool skip_chroma, bool spatial_filter)
|
{
|
struct pipe_rasterizer_state rs_state;
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struct pipe_blend_state blend;
|
struct pipe_sampler_state sampler;
|
struct pipe_vertex_element ve;
|
struct vertex2f sizes;
|
struct pipe_video_buffer templ;
|
|
assert(filter && pipe);
|
assert(video_width && video_height);
|
|
memset(filter, 0, sizeof(*filter));
|
filter->pipe = pipe;
|
filter->skip_chroma = skip_chroma;
|
filter->video_width = video_width;
|
filter->video_height = video_height;
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|
/* TODO: handle other than 4:2:0 subsampling */
|
memset(&templ, 0, sizeof(templ));
|
templ.buffer_format = pipe->screen->get_video_param
|
(
|
pipe->screen,
|
PIPE_VIDEO_PROFILE_UNKNOWN,
|
PIPE_VIDEO_ENTRYPOINT_UNKNOWN,
|
PIPE_VIDEO_CAP_PREFERED_FORMAT
|
);
|
templ.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
|
templ.width = video_width;
|
templ.height = video_height;
|
templ.interlaced = true;
|
filter->video_buffer = vl_video_buffer_create(pipe, &templ);
|
if (!filter->video_buffer)
|
goto error_video_buffer;
|
|
memset(&rs_state, 0, sizeof(rs_state));
|
rs_state.half_pixel_center = true;
|
rs_state.bottom_edge_rule = true;
|
rs_state.depth_clip = 1;
|
filter->rs_state = pipe->create_rasterizer_state(pipe, &rs_state);
|
if (!filter->rs_state)
|
goto error_rs_state;
|
|
memset(&blend, 0, sizeof blend);
|
blend.rt[0].colormask = PIPE_MASK_R;
|
filter->blend[0] = pipe->create_blend_state(pipe, &blend);
|
if (!filter->blend[0])
|
goto error_blendR;
|
|
blend.rt[0].colormask = PIPE_MASK_G;
|
filter->blend[1] = pipe->create_blend_state(pipe, &blend);
|
if (!filter->blend[1])
|
goto error_blendG;
|
|
blend.rt[0].colormask = PIPE_MASK_B;
|
filter->blend[2] = pipe->create_blend_state(pipe, &blend);
|
if (!filter->blend[2])
|
goto error_blendB;
|
|
memset(&sampler, 0, sizeof(sampler));
|
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
|
sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
|
sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
|
sampler.normalized_coords = 1;
|
filter->sampler[0] = pipe->create_sampler_state(pipe, &sampler);
|
filter->sampler[1] = filter->sampler[2] = filter->sampler[3] = filter->sampler[0];
|
if (!filter->sampler[0])
|
goto error_sampler;
|
|
filter->quad = vl_vb_upload_quads(pipe);
|
if(!filter->quad.buffer.resource)
|
goto error_quad;
|
|
memset(&ve, 0, sizeof(ve));
|
ve.src_offset = 0;
|
ve.instance_divisor = 0;
|
ve.vertex_buffer_index = 0;
|
ve.src_format = PIPE_FORMAT_R32G32_FLOAT;
|
filter->ves = pipe->create_vertex_elements_state(pipe, 1, &ve);
|
if (!filter->ves)
|
goto error_ves;
|
|
sizes.x = 1.0f / video_width;
|
sizes.y = 1.0f / video_height;
|
|
filter->vs = create_vert_shader(filter);
|
if (!filter->vs)
|
goto error_vs;
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|
filter->fs_copy_top = create_copy_frag_shader(filter, 0);
|
if (!filter->fs_copy_top)
|
goto error_fs_copy_top;
|
|
filter->fs_copy_bottom = create_copy_frag_shader(filter, 1);
|
if (!filter->fs_copy_bottom)
|
goto error_fs_copy_bottom;
|
|
filter->fs_deint_top = create_deint_frag_shader(filter, 0, &sizes, spatial_filter);
|
if (!filter->fs_deint_top)
|
goto error_fs_deint_top;
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|
filter->fs_deint_bottom = create_deint_frag_shader(filter, 1, &sizes, spatial_filter);
|
if (!filter->fs_deint_bottom)
|
goto error_fs_deint_bottom;
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|
return true;
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|
error_fs_deint_bottom:
|
pipe->delete_fs_state(pipe, filter->fs_deint_top);
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|
error_fs_deint_top:
|
pipe->delete_fs_state(pipe, filter->fs_copy_bottom);
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|
error_fs_copy_bottom:
|
pipe->delete_fs_state(pipe, filter->fs_copy_top);
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|
error_fs_copy_top:
|
pipe->delete_vs_state(pipe, filter->vs);
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|
error_vs:
|
pipe->delete_vertex_elements_state(pipe, filter->ves);
|
|
error_ves:
|
pipe_resource_reference(&filter->quad.buffer.resource, NULL);
|
|
error_quad:
|
pipe->delete_sampler_state(pipe, filter->sampler);
|
|
error_sampler:
|
pipe->delete_blend_state(pipe, filter->blend[2]);
|
|
error_blendB:
|
pipe->delete_blend_state(pipe, filter->blend[1]);
|
|
error_blendG:
|
pipe->delete_blend_state(pipe, filter->blend[0]);
|
|
error_blendR:
|
pipe->delete_rasterizer_state(pipe, filter->rs_state);
|
|
error_rs_state:
|
filter->video_buffer->destroy(filter->video_buffer);
|
|
error_video_buffer:
|
return false;
|
}
|
|
void
|
vl_deint_filter_cleanup(struct vl_deint_filter *filter)
|
{
|
assert(filter);
|
|
filter->pipe->delete_sampler_state(filter->pipe, filter->sampler[0]);
|
filter->pipe->delete_blend_state(filter->pipe, filter->blend[0]);
|
filter->pipe->delete_blend_state(filter->pipe, filter->blend[1]);
|
filter->pipe->delete_blend_state(filter->pipe, filter->blend[2]);
|
filter->pipe->delete_rasterizer_state(filter->pipe, filter->rs_state);
|
filter->pipe->delete_vertex_elements_state(filter->pipe, filter->ves);
|
pipe_resource_reference(&filter->quad.buffer.resource, NULL);
|
|
filter->pipe->delete_vs_state(filter->pipe, filter->vs);
|
filter->pipe->delete_fs_state(filter->pipe, filter->fs_copy_top);
|
filter->pipe->delete_fs_state(filter->pipe, filter->fs_copy_bottom);
|
filter->pipe->delete_fs_state(filter->pipe, filter->fs_deint_top);
|
filter->pipe->delete_fs_state(filter->pipe, filter->fs_deint_bottom);
|
|
filter->video_buffer->destroy(filter->video_buffer);
|
}
|
|
bool
|
vl_deint_filter_check_buffers(struct vl_deint_filter *filter,
|
struct pipe_video_buffer *prevprev,
|
struct pipe_video_buffer *prev,
|
struct pipe_video_buffer *cur,
|
struct pipe_video_buffer *next)
|
{
|
int i;
|
struct pipe_video_buffer *bufs[] = { prevprev, prev, cur, next };
|
|
for (i = 0; i < 4; i++) {
|
if (bufs[i]->chroma_format != PIPE_VIDEO_CHROMA_FORMAT_420)
|
return false;
|
if (bufs[i]->width < filter->video_width ||
|
bufs[i]->height < filter->video_height)
|
return false;
|
if (!bufs[i]->interlaced)
|
return false;
|
}
|
|
return true;
|
}
|
|
void
|
vl_deint_filter_render(struct vl_deint_filter *filter,
|
struct pipe_video_buffer *prevprev,
|
struct pipe_video_buffer *prev,
|
struct pipe_video_buffer *cur,
|
struct pipe_video_buffer *next,
|
unsigned field)
|
{
|
struct pipe_viewport_state viewport;
|
struct pipe_framebuffer_state fb_state;
|
struct pipe_sampler_view **cur_sv;
|
struct pipe_sampler_view **prevprev_sv;
|
struct pipe_sampler_view **prev_sv;
|
struct pipe_sampler_view **next_sv;
|
struct pipe_sampler_view *sampler_views[4];
|
struct pipe_surface **dst_surfaces;
|
const unsigned *plane_order;
|
int i;
|
unsigned j;
|
|
assert(filter && prevprev && prev && cur && next && field <= 1);
|
|
/* set up destination and source */
|
dst_surfaces = filter->video_buffer->get_surfaces(filter->video_buffer);
|
plane_order = vl_video_buffer_plane_order(filter->video_buffer->buffer_format);
|
cur_sv = cur->get_sampler_view_components(cur);
|
prevprev_sv = prevprev->get_sampler_view_components(prevprev);
|
prev_sv = prev->get_sampler_view_components(prev);
|
next_sv = next->get_sampler_view_components(next);
|
|
/* set up pipe state */
|
filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state);
|
filter->pipe->set_vertex_buffers(filter->pipe, 0, 1, &filter->quad);
|
filter->pipe->bind_vertex_elements_state(filter->pipe, filter->ves);
|
filter->pipe->bind_vs_state(filter->pipe, filter->vs);
|
filter->pipe->bind_sampler_states(filter->pipe, PIPE_SHADER_FRAGMENT,
|
0, 4, filter->sampler);
|
|
/* prepare viewport */
|
memset(&viewport, 0, sizeof(viewport));
|
viewport.scale[2] = 1;
|
|
/* prepare framebuffer */
|
memset(&fb_state, 0, sizeof(fb_state));
|
fb_state.nr_cbufs = 1;
|
|
/* process each plane separately */
|
for (i = 0, j = 0; i < VL_NUM_COMPONENTS; ++i) {
|
struct pipe_surface *blit_surf = dst_surfaces[field];
|
struct pipe_surface *dst_surf = dst_surfaces[1 - field];
|
int k = plane_order[i];
|
|
/* bind blend state for this component in the plane */
|
filter->pipe->bind_blend_state(filter->pipe, filter->blend[j]);
|
|
/* update render target state */
|
viewport.scale[0] = blit_surf->texture->width0;
|
viewport.scale[1] = blit_surf->texture->height0;
|
fb_state.width = blit_surf->texture->width0;
|
fb_state.height = blit_surf->texture->height0;
|
|
/* update sampler view sources */
|
sampler_views[0] = prevprev_sv[k];
|
sampler_views[1] = prev_sv[k];
|
sampler_views[2] = cur_sv[k];
|
sampler_views[3] = next_sv[k];
|
filter->pipe->set_sampler_views(filter->pipe, PIPE_SHADER_FRAGMENT, 0, 4, sampler_views);
|
|
/* blit current field */
|
fb_state.cbufs[0] = blit_surf;
|
filter->pipe->bind_fs_state(filter->pipe, field ? filter->fs_copy_bottom : filter->fs_copy_top);
|
filter->pipe->set_framebuffer_state(filter->pipe, &fb_state);
|
filter->pipe->set_viewport_states(filter->pipe, 0, 1, &viewport);
|
util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4);
|
|
/* blit or interpolate other field */
|
fb_state.cbufs[0] = dst_surf;
|
filter->pipe->set_framebuffer_state(filter->pipe, &fb_state);
|
if (i > 0 && filter->skip_chroma) {
|
util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4);
|
} else {
|
filter->pipe->bind_fs_state(filter->pipe, field ? filter->fs_deint_top : filter->fs_deint_bottom);
|
util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4);
|
}
|
|
if (++j >= util_format_get_nr_components(dst_surf->format)) {
|
dst_surfaces += 2;
|
j = 0;
|
}
|
}
|
}
|
