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Member "mesa-20.1.8/src/gallium/auxiliary/vl/vl_matrix_filter.c" (16 Sep 2020, 9837 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /**************************************************************************
    2  *
    3  * Copyright 2012 Christian K├Ânig.
    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 VMWARE 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 #include <stdio.h>
   29 
   30 #include "pipe/p_context.h"
   31 
   32 #include "tgsi/tgsi_ureg.h"
   33 
   34 #include "util/u_draw.h"
   35 #include "util/u_memory.h"
   36 #include "util/u_math.h"
   37 
   38 #include "vl_types.h"
   39 #include "vl_vertex_buffers.h"
   40 #include "vl_matrix_filter.h"
   41 
   42 enum VS_OUTPUT
   43 {
   44    VS_O_VPOS = 0,
   45    VS_O_VTEX = 0
   46 };
   47 
   48 static void *
   49 create_vert_shader(struct vl_matrix_filter *filter)
   50 {
   51    struct ureg_program *shader;
   52    struct ureg_src i_vpos;
   53    struct ureg_dst o_vpos, o_vtex;
   54 
   55    shader = ureg_create(PIPE_SHADER_VERTEX);
   56    if (!shader)
   57       return NULL;
   58 
   59    i_vpos = ureg_DECL_vs_input(shader, 0);
   60    o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
   61    o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX);
   62 
   63    ureg_MOV(shader, o_vpos, i_vpos);
   64    ureg_MOV(shader, o_vtex, i_vpos);
   65 
   66    ureg_END(shader);
   67 
   68    return ureg_create_shader_and_destroy(shader, filter->pipe);
   69 }
   70 
   71 static inline bool
   72 is_vec_zero(struct vertex2f v)
   73 {
   74    return v.x == 0.0f && v.y == 0.0f;
   75 }
   76 
   77 static void *
   78 create_frag_shader(struct vl_matrix_filter *filter, unsigned num_offsets,
   79                    struct vertex2f *offsets, const float *matrix_values)
   80 {
   81    struct ureg_program *shader;
   82    struct ureg_src i_vtex;
   83    struct ureg_src sampler;
   84    struct ureg_dst tmp;
   85    struct ureg_dst t_sum;
   86    struct ureg_dst o_fragment;
   87    unsigned i;
   88 
   89    shader = ureg_create(PIPE_SHADER_FRAGMENT);
   90    if (!shader) {
   91       return NULL;
   92    }
   93 
   94    i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR);
   95    sampler = ureg_DECL_sampler(shader, 0);
   96    ureg_DECL_sampler_view(shader, 0, TGSI_TEXTURE_2D,
   97                           TGSI_RETURN_TYPE_FLOAT,
   98                           TGSI_RETURN_TYPE_FLOAT,
   99                           TGSI_RETURN_TYPE_FLOAT,
  100                           TGSI_RETURN_TYPE_FLOAT);
  101 
  102    tmp = ureg_DECL_temporary(shader);
  103    t_sum = ureg_DECL_temporary(shader);
  104    o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
  105 
  106    ureg_MOV(shader, t_sum, ureg_imm1f(shader, 0.0f));
  107    for (i = 0; i < num_offsets; ++i) {
  108       if (matrix_values[i] == 0.0f)
  109          continue;
  110 
  111       if (!is_vec_zero(offsets[i])) {
  112          ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY),
  113                   i_vtex, ureg_imm2f(shader, offsets[i].x, offsets[i].y));
  114          ureg_MOV(shader, ureg_writemask(tmp, TGSI_WRITEMASK_ZW),
  115                   ureg_imm1f(shader, 0.0f));
  116          ureg_TEX(shader, tmp, TGSI_TEXTURE_2D, ureg_src(tmp), sampler);
  117       } else {
  118          ureg_TEX(shader, tmp, TGSI_TEXTURE_2D, i_vtex, sampler);
  119       }
  120       ureg_MAD(shader, t_sum, ureg_src(tmp), ureg_imm1f(shader, matrix_values[i]),
  121                ureg_src(t_sum));
  122    }
  123 
  124    ureg_MOV(shader, o_fragment, ureg_src(t_sum));
  125 
  126    ureg_END(shader);
  127 
  128    return ureg_create_shader_and_destroy(shader, filter->pipe);
  129 }
  130 
  131 bool
  132 vl_matrix_filter_init(struct vl_matrix_filter *filter, struct pipe_context *pipe,
  133                       unsigned video_width, unsigned video_height,
  134                       unsigned matrix_width, unsigned matrix_height,
  135                       const float *matrix_values)
  136 {
  137    struct pipe_rasterizer_state rs_state;
  138    struct pipe_blend_state blend;
  139    struct pipe_sampler_state sampler;
  140    struct pipe_vertex_element ve;
  141    struct vertex2f *offsets, v, sizes;
  142    unsigned i, num_offsets = matrix_width * matrix_height;
  143 
  144    assert(filter && pipe);
  145    assert(video_width && video_height);
  146    assert(matrix_width && matrix_height);
  147 
  148    memset(filter, 0, sizeof(*filter));
  149    filter->pipe = pipe;
  150 
  151    memset(&rs_state, 0, sizeof(rs_state));
  152    rs_state.half_pixel_center = true;
  153    rs_state.bottom_edge_rule = true;
  154    rs_state.depth_clip_near = 1;
  155    rs_state.depth_clip_far = 1;
  156 
  157    filter->rs_state = pipe->create_rasterizer_state(pipe, &rs_state);
  158    if (!filter->rs_state)
  159       goto error_rs_state;
  160 
  161    memset(&blend, 0, sizeof blend);
  162    blend.rt[0].rgb_func = PIPE_BLEND_ADD;
  163    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
  164    blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
  165    blend.rt[0].alpha_func = PIPE_BLEND_ADD;
  166    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
  167    blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
  168    blend.logicop_func = PIPE_LOGICOP_CLEAR;
  169    blend.rt[0].colormask = PIPE_MASK_RGBA;
  170    filter->blend = pipe->create_blend_state(pipe, &blend);
  171    if (!filter->blend)
  172       goto error_blend;
  173 
  174    memset(&sampler, 0, sizeof(sampler));
  175    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
  176    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
  177    sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
  178    sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
  179    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
  180    sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
  181    sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
  182    sampler.compare_func = PIPE_FUNC_ALWAYS;
  183    sampler.normalized_coords = 1;
  184    filter->sampler = pipe->create_sampler_state(pipe, &sampler);
  185    if (!filter->sampler)
  186       goto error_sampler;
  187 
  188    filter->quad = vl_vb_upload_quads(pipe);
  189    if(!filter->quad.buffer.resource)
  190       goto error_quad;
  191 
  192    memset(&ve, 0, sizeof(ve));
  193    ve.src_offset = 0;
  194    ve.instance_divisor = 0;
  195    ve.vertex_buffer_index = 0;
  196    ve.src_format = PIPE_FORMAT_R32G32_FLOAT;
  197    filter->ves = pipe->create_vertex_elements_state(pipe, 1, &ve);
  198    if (!filter->ves)
  199       goto error_ves;
  200 
  201    offsets = MALLOC(sizeof(struct vertex2f) * num_offsets);
  202    if (!offsets)
  203       goto error_offsets;
  204 
  205    sizes.x = (float)(matrix_width - 1) / 2.0f;
  206    sizes.y = (float)(matrix_height - 1) / 2.0f;
  207 
  208    for (v.x = -sizes.x, i = 0; v.x <= sizes.x; v.x += 1.0f)
  209       for (v.y = -sizes.y; v.y <= sizes.y; v.y += 1.0f)
  210          offsets[i++] = v;
  211 
  212    for (i = 0; i < num_offsets; ++i) {
  213       offsets[i].x /= video_width;
  214       offsets[i].y /= video_height;
  215    }
  216 
  217    filter->vs = create_vert_shader(filter);
  218    if (!filter->vs)
  219       goto error_vs;
  220 
  221    filter->fs = create_frag_shader(filter, num_offsets, offsets, matrix_values);
  222    if (!filter->fs)
  223       goto error_fs;
  224 
  225    FREE(offsets);
  226    return true;
  227 
  228 error_fs:
  229    pipe->delete_vs_state(pipe, filter->vs);
  230 
  231 error_vs:
  232    FREE(offsets);
  233 
  234 error_offsets:
  235    pipe->delete_vertex_elements_state(pipe, filter->ves);
  236 
  237 error_ves:
  238    pipe_resource_reference(&filter->quad.buffer.resource, NULL);
  239 
  240 error_quad:
  241    pipe->delete_sampler_state(pipe, filter->sampler);
  242 
  243 error_sampler:
  244    pipe->delete_blend_state(pipe, filter->blend);
  245 
  246 error_blend:
  247    pipe->delete_rasterizer_state(pipe, filter->rs_state);
  248 
  249 error_rs_state:
  250    return false;
  251 }
  252 
  253 void
  254 vl_matrix_filter_cleanup(struct vl_matrix_filter *filter)
  255 {
  256    assert(filter);
  257 
  258    filter->pipe->delete_sampler_state(filter->pipe, filter->sampler);
  259    filter->pipe->delete_blend_state(filter->pipe, filter->blend);
  260    filter->pipe->delete_rasterizer_state(filter->pipe, filter->rs_state);
  261    filter->pipe->delete_vertex_elements_state(filter->pipe, filter->ves);
  262    pipe_resource_reference(&filter->quad.buffer.resource, NULL);
  263 
  264    filter->pipe->delete_vs_state(filter->pipe, filter->vs);
  265    filter->pipe->delete_fs_state(filter->pipe, filter->fs);
  266 }
  267 
  268 void
  269 vl_matrix_filter_render(struct vl_matrix_filter *filter,
  270                         struct pipe_sampler_view *src,
  271                         struct pipe_surface *dst)
  272 {
  273    struct pipe_viewport_state viewport;
  274    struct pipe_framebuffer_state fb_state;
  275 
  276    assert(filter && src && dst);
  277 
  278    memset(&viewport, 0, sizeof(viewport));
  279    viewport.scale[0] = dst->width;
  280    viewport.scale[1] = dst->height;
  281    viewport.scale[2] = 1;
  282 
  283    memset(&fb_state, 0, sizeof(fb_state));
  284    fb_state.width = dst->width;
  285    fb_state.height = dst->height;
  286    fb_state.nr_cbufs = 1;
  287    fb_state.cbufs[0] = dst;
  288 
  289    filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state);
  290    filter->pipe->bind_blend_state(filter->pipe, filter->blend);
  291    filter->pipe->bind_sampler_states(filter->pipe, PIPE_SHADER_FRAGMENT,
  292                                      0, 1, &filter->sampler);
  293    filter->pipe->set_sampler_views(filter->pipe, PIPE_SHADER_FRAGMENT,
  294                                    0, 1, &src);
  295    filter->pipe->bind_vs_state(filter->pipe, filter->vs);
  296    filter->pipe->bind_fs_state(filter->pipe, filter->fs);
  297    filter->pipe->set_framebuffer_state(filter->pipe, &fb_state);
  298    filter->pipe->set_viewport_states(filter->pipe, 0, 1, &viewport);
  299    filter->pipe->set_vertex_buffers(filter->pipe, 0, 1, &filter->quad);
  300    filter->pipe->bind_vertex_elements_state(filter->pipe, filter->ves);
  301 
  302    util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4);
  303 }