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Diffstat (limited to 'source/blender/draw/intern/draw_debug.c')
| -rw-r--r-- | source/blender/draw/intern/draw_debug.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/source/blender/draw/intern/draw_debug.c b/source/blender/draw/intern/draw_debug.c new file mode 100644 index 00000000000..0e4176f90a6 --- /dev/null +++ b/source/blender/draw/intern/draw_debug.c @@ -0,0 +1,151 @@ +/* + * Copyright 2018, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file blender/draw/intern/draw_debug.c + * \ingroup draw + * + * \brief Simple API to draw debug shapes in the viewport. + */ + +#include "MEM_guardedalloc.h" + +#include "DNA_object_types.h" + +#include "BLI_link_utils.h" + +#include "GPU_immediate.h" + +#include "draw_debug.h" +#include "draw_manager.h" + +/* --------- Register --------- */ + +/* Matrix applied to all points before drawing. Could be a stack if needed. */ +static float g_modelmat[4][4]; + +void DRW_debug_modelmat_reset(void) +{ + unit_m4(g_modelmat); +} + +void DRW_debug_modelmat(const float modelmat[4][4]) +{ + copy_m4_m4(g_modelmat, modelmat); +} + +void DRW_debug_line_v3v3(const float v1[3], const float v2[3], const float color[4]) +{ + DRWDebugLine *line = MEM_mallocN(sizeof(DRWDebugLine), "DRWDebugLine"); + mul_v3_m4v3(line->pos[0], g_modelmat, v1); + mul_v3_m4v3(line->pos[1], g_modelmat, v2); + copy_v4_v4(line->color, color); + BLI_LINKS_PREPEND(DST.debug.lines, line); +} + +void DRW_debug_polygon_v3(const float (*v)[3], const int vert_len, const float color[4]) +{ + BLI_assert(vert_len > 1); + + for (int i = 0; i < vert_len; ++i) { + DRW_debug_line_v3v3(v[i], v[(i + 1) % vert_len], color); + } +} + +/* NOTE: g_modelmat is still applied on top. */ +void DRW_debug_m4(const float m[4][4]) +{ + float v0[3] = {0.0f, 0.0f, 0.0f}; + float v1[3] = {1.0f, 0.0f, 0.0f}; + float v2[3] = {0.0f, 1.0f, 0.0f}; + float v3[3] = {0.0f, 0.0f, 1.0f}; + + mul_m4_v3(m, v0); + mul_m4_v3(m, v1); + mul_m4_v3(m, v2); + mul_m4_v3(m, v3); + + DRW_debug_line_v3v3(v0, v1, (float[4]){1.0f, 0.0f, 0.0f, 1.0f}); + DRW_debug_line_v3v3(v0, v2, (float[4]){0.0f, 1.0f, 0.0f, 1.0f}); + DRW_debug_line_v3v3(v0, v3, (float[4]){0.0f, 0.0f, 1.0f, 1.0f}); +} + +void DRW_debug_bbox(const BoundBox *bbox, const float color[4]) +{ + DRW_debug_line_v3v3(bbox->vec[0], bbox->vec[1], color); + DRW_debug_line_v3v3(bbox->vec[1], bbox->vec[2], color); + DRW_debug_line_v3v3(bbox->vec[2], bbox->vec[3], color); + DRW_debug_line_v3v3(bbox->vec[3], bbox->vec[0], color); + + DRW_debug_line_v3v3(bbox->vec[4], bbox->vec[5], color); + DRW_debug_line_v3v3(bbox->vec[5], bbox->vec[6], color); + DRW_debug_line_v3v3(bbox->vec[6], bbox->vec[7], color); + DRW_debug_line_v3v3(bbox->vec[7], bbox->vec[4], color); + + DRW_debug_line_v3v3(bbox->vec[0], bbox->vec[4], color); + DRW_debug_line_v3v3(bbox->vec[1], bbox->vec[5], color); + DRW_debug_line_v3v3(bbox->vec[2], bbox->vec[6], color); + DRW_debug_line_v3v3(bbox->vec[3], bbox->vec[7], color); +} + +/* --------- Render --------- */ + +static void drw_debug_draw_lines(void) +{ + int count = BLI_linklist_count((LinkNode *)DST.debug.lines); + + if (count == 0) { + return; + } + + Gwn_VertFormat *vert_format = immVertexFormat(); + uint pos = GWN_vertformat_attr_add(vert_format, "pos", GWN_COMP_F32, 3, GWN_FETCH_FLOAT); + uint col = GWN_vertformat_attr_add(vert_format, "color", GWN_COMP_F32, 4, GWN_FETCH_FLOAT); + + immBindBuiltinProgram(GPU_SHADER_3D_FLAT_COLOR); + + immBegin(GWN_PRIM_LINES, count * 2); + + while (DST.debug.lines) { + void *next = DST.debug.lines->next; + + immAttrib4fv(col, DST.debug.lines->color); + immVertex3fv(pos, DST.debug.lines->pos[0]); + + immAttrib4fv(col, DST.debug.lines->color); + immVertex3fv(pos, DST.debug.lines->pos[1]); + + MEM_freeN(DST.debug.lines); + DST.debug.lines = next; + } + immEnd(); + + immUnbindProgram(); +} + +void drw_debug_draw(void) +{ + drw_debug_draw_lines(); +} + +void drw_debug_init(void) +{ + DRW_debug_modelmat_reset(); +} |