1 /************************************************************************** 2 * 3 * Copyright 2012 Christian Knig. 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 *t_array = MALLOC(sizeof(struct ureg_dst) * num_offsets); 85 struct ureg_dst t_sum; 86 struct ureg_dst o_fragment; 87 bool first; 88 unsigned i; 89 90 shader = ureg_create(PIPE_SHADER_FRAGMENT); 91 if (!shader) { 92 FREE(t_array); 93 return NULL; 94 } 95 96 i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR); 97 sampler = ureg_DECL_sampler(shader, 0); 98 99 for (i = 0; i < num_offsets; ++i) 100 if (matrix_values[i] != 0.0f) 101 t_array[i] = ureg_DECL_temporary(shader); 102 103 o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0); 104 105 /* 106 * t_array[0..*] = vtex + offset[0..*] 107 * t_array[0..*] = tex(t_array[0..*], sampler) 108 * o_fragment = sum(t_array[0..*] * matrix_values[0..*]) 109 */ 110 111 for (i = 0; i < num_offsets; ++i) { 112 if (matrix_values[i] != 0.0f && !is_vec_zero(offsets[i])) { 113 ureg_ADD(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_XY), 114 i_vtex, ureg_imm2f(shader, offsets[i].x, offsets[i].y)); 115 ureg_MOV(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_ZW), 116 ureg_imm1f(shader, 0.0f)); 117 } 118 } 119 120 for (i = 0; i < num_offsets; ++i) { 121 if (matrix_values[i] != 0.0f) { 122 struct ureg_src src = is_vec_zero(offsets[i]) ? i_vtex : ureg_src(t_array[i]); 123 ureg_TEX(shader, t_array[i], TGSI_TEXTURE_2D, src, sampler); 124 } 125 } 126 127 for (i = 0, first = true; i < num_offsets; ++i) { 128 if (matrix_values[i] != 0.0f) { 129 if (first) { 130 t_sum = t_array[i]; 131 ureg_MUL(shader, t_sum, ureg_src(t_array[i]), 132 ureg_imm1f(shader, matrix_values[i])); 133 first = false; 134 } else 135 ureg_MAD(shader, t_sum, ureg_src(t_array[i]), 136 ureg_imm1f(shader, matrix_values[i]), ureg_src(t_sum)); 137 } 138 } 139 if (first) 140 ureg_MOV(shader, o_fragment, ureg_imm1f(shader, 0.0f)); 141 else 142 ureg_MOV(shader, o_fragment, ureg_src(t_sum)); 143 144 ureg_END(shader); 145 146 FREE(t_array); 147 return ureg_create_shader_and_destroy(shader, filter->pipe); 148 } 149 150 bool 151 vl_matrix_filter_init(struct vl_matrix_filter *filter, struct pipe_context *pipe, 152 unsigned video_width, unsigned video_height, 153 unsigned matrix_width, unsigned matrix_height, 154 const float *matrix_values) 155 { 156 struct pipe_rasterizer_state rs_state; 157 struct pipe_blend_state blend; 158 struct pipe_sampler_state sampler; 159 struct pipe_vertex_element ve; 160 struct vertex2f *offsets, v, sizes; 161 unsigned i, num_offsets = matrix_width * matrix_height; 162 163 assert(filter && pipe); 164 assert(video_width && video_height); 165 assert(matrix_width && matrix_height); 166 167 memset(filter, 0, sizeof(*filter)); 168 filter->pipe = pipe; 169 170 memset(&rs_state, 0, sizeof(rs_state)); 171 rs_state.half_pixel_center = true; 172 rs_state.bottom_edge_rule = true; 173 rs_state.depth_clip = 1; 174 filter->rs_state = pipe->create_rasterizer_state(pipe, &rs_state); 175 if (!filter->rs_state) 176 goto error_rs_state; 177 178 memset(&blend, 0, sizeof blend); 179 blend.rt[0].rgb_func = PIPE_BLEND_ADD; 180 blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE; 181 blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE; 182 blend.rt[0].alpha_func = PIPE_BLEND_ADD; 183 blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE; 184 blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE; 185 blend.logicop_func = PIPE_LOGICOP_CLEAR; 186 blend.rt[0].colormask = PIPE_MASK_RGBA; 187 filter->blend = pipe->create_blend_state(pipe, &blend); 188 if (!filter->blend) 189 goto error_blend; 190 191 memset(&sampler, 0, sizeof(sampler)); 192 sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 193 sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 194 sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 195 sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; 196 sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; 197 sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; 198 sampler.compare_mode = PIPE_TEX_COMPARE_NONE; 199 sampler.compare_func = PIPE_FUNC_ALWAYS; 200 sampler.normalized_coords = 1; 201 filter->sampler = pipe->create_sampler_state(pipe, &sampler); 202 if (!filter->sampler) 203 goto error_sampler; 204 205 filter->quad = vl_vb_upload_quads(pipe); 206 if(!filter->quad.buffer) 207 goto error_quad; 208 209 memset(&ve, 0, sizeof(ve)); 210 ve.src_offset = 0; 211 ve.instance_divisor = 0; 212 ve.vertex_buffer_index = 0; 213 ve.src_format = PIPE_FORMAT_R32G32_FLOAT; 214 filter->ves = pipe->create_vertex_elements_state(pipe, 1, &ve); 215 if (!filter->ves) 216 goto error_ves; 217 218 offsets = MALLOC(sizeof(struct vertex2f) * num_offsets); 219 if (!offsets) 220 goto error_offsets; 221 222 sizes.x = (float)(matrix_width - 1) / 2.0f; 223 sizes.y = (float)(matrix_height - 1) / 2.0f; 224 225 for (v.x = -sizes.x, i = 0; v.x <= sizes.x; v.x += 1.0f) 226 for (v.y = -sizes.y; v.y <= sizes.y; v.y += 1.0f) 227 offsets[i++] = v; 228 229 for (i = 0; i < num_offsets; ++i) { 230 offsets[i].x /= video_width; 231 offsets[i].y /= video_height; 232 } 233 234 filter->vs = create_vert_shader(filter); 235 if (!filter->vs) 236 goto error_vs; 237 238 filter->fs = create_frag_shader(filter, num_offsets, offsets, matrix_values); 239 if (!filter->fs) 240 goto error_fs; 241 242 FREE(offsets); 243 return true; 244 245 error_fs: 246 pipe->delete_vs_state(pipe, filter->vs); 247 248 error_vs: 249 FREE(offsets); 250 251 error_offsets: 252 pipe->delete_vertex_elements_state(pipe, filter->ves); 253 254 error_ves: 255 pipe_resource_reference(&filter->quad.buffer, NULL); 256 257 error_quad: 258 pipe->delete_sampler_state(pipe, filter->sampler); 259 260 error_sampler: 261 pipe->delete_blend_state(pipe, filter->blend); 262 263 error_blend: 264 pipe->delete_rasterizer_state(pipe, filter->rs_state); 265 266 error_rs_state: 267 return false; 268 } 269 270 void 271 vl_matrix_filter_cleanup(struct vl_matrix_filter *filter) 272 { 273 assert(filter); 274 275 filter->pipe->delete_sampler_state(filter->pipe, filter->sampler); 276 filter->pipe->delete_blend_state(filter->pipe, filter->blend); 277 filter->pipe->delete_rasterizer_state(filter->pipe, filter->rs_state); 278 filter->pipe->delete_vertex_elements_state(filter->pipe, filter->ves); 279 pipe_resource_reference(&filter->quad.buffer, NULL); 280 281 filter->pipe->delete_vs_state(filter->pipe, filter->vs); 282 filter->pipe->delete_fs_state(filter->pipe, filter->fs); 283 } 284 285 void 286 vl_matrix_filter_render(struct vl_matrix_filter *filter, 287 struct pipe_sampler_view *src, 288 struct pipe_surface *dst) 289 { 290 struct pipe_viewport_state viewport; 291 struct pipe_framebuffer_state fb_state; 292 293 assert(filter && src && dst); 294 295 memset(&viewport, 0, sizeof(viewport)); 296 viewport.scale[0] = dst->width; 297 viewport.scale[1] = dst->height; 298 viewport.scale[2] = 1; 299 300 memset(&fb_state, 0, sizeof(fb_state)); 301 fb_state.width = dst->width; 302 fb_state.height = dst->height; 303 fb_state.nr_cbufs = 1; 304 fb_state.cbufs[0] = dst; 305 306 filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state); 307 filter->pipe->bind_blend_state(filter->pipe, filter->blend); 308 filter->pipe->bind_sampler_states(filter->pipe, PIPE_SHADER_FRAGMENT, 309 0, 1, &filter->sampler); 310 filter->pipe->set_sampler_views(filter->pipe, PIPE_SHADER_FRAGMENT, 311 0, 1, &src); 312 filter->pipe->bind_vs_state(filter->pipe, filter->vs); 313 filter->pipe->bind_fs_state(filter->pipe, filter->fs); 314 filter->pipe->set_framebuffer_state(filter->pipe, &fb_state); 315 filter->pipe->set_viewport_states(filter->pipe, 0, 1, &viewport); 316 filter->pipe->set_vertex_buffers(filter->pipe, 0, 1, &filter->quad); 317 filter->pipe->bind_vertex_elements_state(filter->pipe, filter->ves); 318 319 util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4); 320 } 321
