vl_matrix_filter.c revision d7db6343dd330cb8eb70e65190adb24dd350facc
1/************************************************************************** 2 * 3 * Copyright 2012 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#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 42enum VS_OUTPUT 43{ 44 VS_O_VPOS, 45 VS_O_VTEX 46}; 47 48static void * 49create_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(TGSI_PROCESSOR_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 71static inline bool 72is_vec_zero(struct vertex2f v) 73{ 74 return v.x == 0.0f && v.y == 0.0f; 75} 76 77static void * 78create_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 *t_array = MALLOC(sizeof(struct ureg_dst) * num_offsets); 85 struct ureg_dst o_fragment; 86 bool first; 87 int i; 88 89 shader = ureg_create(TGSI_PROCESSOR_FRAGMENT); 90 if (!shader) { 91 FREE(t_array); 92 return NULL; 93 } 94 95 i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR); 96 sampler = ureg_DECL_sampler(shader, 0); 97 98 for (i = 0; i < num_offsets; ++i) 99 if (matrix_values[i] != 0.0f) 100 t_array[i] = ureg_DECL_temporary(shader); 101 102 o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0); 103 104 /* 105 * t_array[0..*] = vtex + offset[0..*] 106 * t_array[0..*] = tex(t_array[0..*], sampler) 107 * o_fragment = sum(t_array[0..*] * matrix_values[0..*]) 108 */ 109 110 for (i = 0; i < num_offsets; ++i) { 111 if (matrix_values[i] != 0.0f && !is_vec_zero(offsets[i])) { 112 ureg_ADD(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_XY), 113 i_vtex, ureg_imm2f(shader, offsets[i].x, offsets[i].y)); 114 ureg_MOV(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_ZW), 115 ureg_imm1f(shader, 0.0f)); 116 } 117 } 118 119 for (i = 0; i < num_offsets; ++i) { 120 if (matrix_values[i] != 0.0f) { 121 struct ureg_src src = is_vec_zero(offsets[i]) ? i_vtex : ureg_src(t_array[i]); 122 ureg_TEX(shader, t_array[i], TGSI_TEXTURE_2D, src, sampler); 123 } 124 } 125 126 for (i = 0, first = true; i < num_offsets; ++i) { 127 if (matrix_values[i] != 0.0f) { 128 if (first) { 129 ureg_MUL(shader, o_fragment, ureg_src(t_array[i]), 130 ureg_imm1f(shader, matrix_values[i])); 131 first = false; 132 } else 133 ureg_MAD(shader, o_fragment, ureg_src(t_array[i]), 134 ureg_imm1f(shader, matrix_values[i]), ureg_src(o_fragment)); 135 } 136 } 137 if (first) 138 ureg_MOV(shader, o_fragment, ureg_imm1f(shader, 0.0f)); 139 140 ureg_END(shader); 141 142 FREE(t_array); 143 return ureg_create_shader_and_destroy(shader, filter->pipe); 144} 145 146bool 147vl_matrix_filter_init(struct vl_matrix_filter *filter, struct pipe_context *pipe, 148 unsigned video_width, unsigned video_height, 149 unsigned matrix_width, unsigned matrix_height, 150 const float *matrix_values) 151{ 152 struct pipe_rasterizer_state rs_state; 153 struct pipe_blend_state blend; 154 struct pipe_sampler_state sampler; 155 struct pipe_vertex_element ve; 156 struct vertex2f *offsets, v, sizes; 157 unsigned i, num_offsets = matrix_width * matrix_height; 158 159 assert(filter && pipe); 160 assert(video_width && video_height); 161 assert(matrix_width && matrix_height); 162 163 memset(filter, 0, sizeof(*filter)); 164 filter->pipe = pipe; 165 166 memset(&rs_state, 0, sizeof(rs_state)); 167 rs_state.gl_rasterization_rules = true; 168 rs_state.depth_clip = 1; 169 filter->rs_state = pipe->create_rasterizer_state(pipe, &rs_state); 170 if (!filter->rs_state) 171 goto error_rs_state; 172 173 memset(&blend, 0, sizeof blend); 174 blend.rt[0].rgb_func = PIPE_BLEND_ADD; 175 blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE; 176 blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE; 177 blend.rt[0].alpha_func = PIPE_BLEND_ADD; 178 blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE; 179 blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE; 180 blend.logicop_func = PIPE_LOGICOP_CLEAR; 181 blend.rt[0].colormask = PIPE_MASK_RGBA; 182 filter->blend = pipe->create_blend_state(pipe, &blend); 183 if (!filter->blend) 184 goto error_blend; 185 186 memset(&sampler, 0, sizeof(sampler)); 187 sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 188 sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 189 sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 190 sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; 191 sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; 192 sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; 193 sampler.compare_mode = PIPE_TEX_COMPARE_NONE; 194 sampler.compare_func = PIPE_FUNC_ALWAYS; 195 sampler.normalized_coords = 1; 196 filter->sampler = pipe->create_sampler_state(pipe, &sampler); 197 if (!filter->sampler) 198 goto error_sampler; 199 200 filter->quad = vl_vb_upload_quads(pipe); 201 if(!filter->quad.buffer) 202 goto error_quad; 203 204 memset(&ve, 0, sizeof(ve)); 205 ve.src_offset = 0; 206 ve.instance_divisor = 0; 207 ve.vertex_buffer_index = 0; 208 ve.src_format = PIPE_FORMAT_R32G32_FLOAT; 209 filter->ves = pipe->create_vertex_elements_state(pipe, 1, &ve); 210 if (!filter->ves) 211 goto error_ves; 212 213 offsets = MALLOC(sizeof(struct vertex2f) * num_offsets); 214 if (!offsets) 215 goto error_offsets; 216 217 sizes.x = (float)(matrix_width - 1) / 2.0f; 218 sizes.y = (float)(matrix_height - 1) / 2.0f; 219 220 for (v.x = -sizes.x, i = 0; v.x <= sizes.x; v.x += 1.0f) 221 for (v.y = -sizes.y; v.y <= sizes.y; v.y += 1.0f) 222 offsets[i++] = v; 223 224 for (i = 0; i < num_offsets; ++i) { 225 offsets[i].x /= video_width; 226 offsets[i].y /= video_height; 227 } 228 229 filter->vs = create_vert_shader(filter); 230 if (!filter->vs) 231 goto error_vs; 232 233 filter->fs = create_frag_shader(filter, num_offsets, offsets, matrix_values); 234 if (!filter->fs) 235 goto error_fs; 236 237 FREE(offsets); 238 return true; 239 240error_fs: 241 pipe->delete_vs_state(pipe, filter->vs); 242 243error_vs: 244 FREE(offsets); 245 246error_offsets: 247 pipe->delete_vertex_elements_state(pipe, filter->ves); 248 249error_ves: 250 pipe_resource_reference(&filter->quad.buffer, NULL); 251 252error_quad: 253 pipe->delete_sampler_state(pipe, filter->sampler); 254 255error_sampler: 256 pipe->delete_blend_state(pipe, filter->blend); 257 258error_blend: 259 pipe->delete_rasterizer_state(pipe, filter->rs_state); 260 261error_rs_state: 262 return false; 263} 264 265void 266vl_matrix_filter_cleanup(struct vl_matrix_filter *filter) 267{ 268 assert(filter); 269 270 filter->pipe->delete_sampler_state(filter->pipe, filter->sampler); 271 filter->pipe->delete_blend_state(filter->pipe, filter->blend); 272 filter->pipe->delete_rasterizer_state(filter->pipe, filter->rs_state); 273 filter->pipe->delete_vertex_elements_state(filter->pipe, filter->ves); 274 pipe_resource_reference(&filter->quad.buffer, NULL); 275 276 filter->pipe->delete_vs_state(filter->pipe, filter->vs); 277 filter->pipe->delete_fs_state(filter->pipe, filter->fs); 278} 279 280void 281vl_matrix_filter_render(struct vl_matrix_filter *filter, 282 struct pipe_sampler_view *src, 283 struct pipe_surface *dst) 284{ 285 struct pipe_viewport_state viewport; 286 struct pipe_framebuffer_state fb_state; 287 288 assert(filter && src && dst); 289 290 memset(&viewport, 0, sizeof(viewport)); 291 viewport.scale[0] = dst->width; 292 viewport.scale[1] = dst->height; 293 viewport.scale[2] = 1; 294 viewport.scale[3] = 1; 295 296 memset(&fb_state, 0, sizeof(fb_state)); 297 fb_state.width = dst->width; 298 fb_state.height = dst->height; 299 fb_state.nr_cbufs = 1; 300 fb_state.cbufs[0] = dst; 301 302 filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state); 303 filter->pipe->bind_blend_state(filter->pipe, filter->blend); 304 filter->pipe->bind_fragment_sampler_states(filter->pipe, 1, &filter->sampler); 305 filter->pipe->set_fragment_sampler_views(filter->pipe, 1, &src); 306 filter->pipe->bind_vs_state(filter->pipe, filter->vs); 307 filter->pipe->bind_fs_state(filter->pipe, filter->fs); 308 filter->pipe->set_framebuffer_state(filter->pipe, &fb_state); 309 filter->pipe->set_viewport_state(filter->pipe, &viewport); 310 filter->pipe->set_vertex_buffers(filter->pipe, 1, &filter->quad); 311 filter->pipe->bind_vertex_elements_state(filter->pipe, filter->ves); 312 313 util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4); 314} 315