1098 lines
32 KiB
C
1098 lines
32 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2005 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Brecht Van Lommel.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/gpu/intern/gpu_buffers.c
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* \ingroup gpu
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*
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* Mesh drawing using OpenGL VBO (Vertex Buffer Objects)
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*/
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#include <limits.h>
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#include <stddef.h>
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#include <string.h>
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#include "MEM_guardedalloc.h"
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#include "BLI_bitmap.h"
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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#include "BLI_ghash.h"
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#include "BLI_threads.h"
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#include "DNA_meshdata_types.h"
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#include "BKE_ccg.h"
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#include "BKE_DerivedMesh.h"
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#include "BKE_paint.h"
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#include "BKE_mesh.h"
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#include "BKE_pbvh.h"
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#include "GPU_buffers.h"
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#include "GPU_draw.h"
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#include "GPU_immediate.h"
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#include "GPU_batch.h"
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#include "bmesh.h"
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static ThreadMutex buffer_mutex = BLI_MUTEX_INITIALIZER;
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/* multires global buffer, can be used for many grids having the same grid size */
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typedef struct GridCommonGPUBuffer {
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Gwn_IndexBuf *mres_buffer;
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int mres_prev_gridsize;
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unsigned mres_prev_totquad;
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} GridCommonGPUBuffer;
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/* XXX: the rest of the code in this file is used for optimized PBVH
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* drawing and doesn't interact at all with the buffer code above */
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struct GPU_PBVH_Buffers {
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Gwn_IndexBuf *index_buf, *index_buf_fast;
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Gwn_VertBuf *vert_buf;
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Gwn_Batch *triangles;
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Gwn_Batch *triangles_fast;
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/* mesh pointers in case buffer allocation fails */
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const MPoly *mpoly;
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const MLoop *mloop;
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const MLoopTri *looptri;
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const MVert *mvert;
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const int *face_indices;
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int face_indices_len;
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const float *vmask;
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/* grid pointers */
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CCGKey gridkey;
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CCGElem **grids;
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const DMFlagMat *grid_flag_mats;
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BLI_bitmap * const *grid_hidden;
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const int *grid_indices;
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int totgrid;
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bool has_hidden;
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bool is_index_buf_global; /* Means index_buf uses global bvh's grid_common_gpu_buffer, **DO NOT** free it! */
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bool use_bmesh;
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unsigned int tot_tri, tot_quad;
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/* The PBVH ensures that either all faces in the node are
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* smooth-shaded or all faces are flat-shaded */
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bool smooth;
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bool show_diffuse_color;
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bool show_mask;
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float diffuse_color[4];
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};
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static struct {
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uint pos, nor, col;
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} g_vbo_id = {0};
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static void gpu_material_diffuse_get(int UNUSED(nr), float diff[4])
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{
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/* TODO: sculpt diffuse color option not supported in 2.8 yet. */
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diff[0] = 0.8f;
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diff[1] = 0.8f;
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diff[2] = 0.8f;
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diff[3] = 1.0f;
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}
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/* Allocates a non-initialized buffer to be sent to GPU.
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* Return is false it indicates that the memory map failed. */
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static bool gpu_pbvh_vert_buf_data_set(GPU_PBVH_Buffers *buffers, unsigned int vert_ct)
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{
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if (buffers->vert_buf == NULL) {
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/* Initialize vertex buffer */
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/* match 'VertexBufferFormat' */
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static Gwn_VertFormat format = {0};
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if (format.attrib_ct == 0) {
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g_vbo_id.pos = GWN_vertformat_attr_add(&format, "pos", GWN_COMP_F32, 3, GWN_FETCH_FLOAT);
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g_vbo_id.nor = GWN_vertformat_attr_add(&format, "nor", GWN_COMP_I16, 3, GWN_FETCH_INT_TO_FLOAT_UNIT);
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g_vbo_id.col = GWN_vertformat_attr_add(&format, "color", GWN_COMP_U8, 3, GWN_FETCH_INT_TO_FLOAT_UNIT);
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}
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#if 0
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buffers->vert_buf = GWN_vertbuf_create_with_format_ex(&format, GWN_USAGE_DYNAMIC);
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GWN_vertbuf_data_alloc(buffers->vert_buf, vert_ct);
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}
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else if (vert_ct != buffers->vert_buf->vertex_ct) {
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GWN_vertbuf_data_resize(buffers->vert_buf, vert_ct);
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}
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#else
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buffers->vert_buf = GWN_vertbuf_create_with_format_ex(&format, GWN_USAGE_STATIC);
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}
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GWN_vertbuf_data_alloc(buffers->vert_buf, vert_ct);
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#endif
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return buffers->vert_buf->data != NULL;
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}
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static void gpu_pbvh_batch_init(GPU_PBVH_Buffers *buffers)
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{
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/* force flushing to the GPU */
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if (buffers->vert_buf->data) {
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GWN_vertbuf_use(buffers->vert_buf);
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}
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if (buffers->triangles == NULL) {
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buffers->triangles = GWN_batch_create(
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GWN_PRIM_TRIS, buffers->vert_buf,
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/* can be NULL */
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buffers->index_buf);
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}
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if ((buffers->triangles_fast == NULL) && buffers->index_buf_fast) {
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buffers->triangles_fast = GWN_batch_create(
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GWN_PRIM_TRIS, buffers->vert_buf,
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/* can be NULL */
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buffers->index_buf_fast);
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}
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}
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static float gpu_color_from_mask(float mask)
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{
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return 1.0f - mask * 0.75f;
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}
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static void gpu_color_from_mask_copy(float mask, const float diffuse_color[4], unsigned char out[3])
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{
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float mask_color;
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mask_color = gpu_color_from_mask(mask) * 255.0f;
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out[0] = diffuse_color[0] * mask_color;
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out[1] = diffuse_color[1] * mask_color;
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out[2] = diffuse_color[2] * mask_color;
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}
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static void gpu_color_from_mask_quad_copy(const CCGKey *key,
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CCGElem *a, CCGElem *b,
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CCGElem *c, CCGElem *d,
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const float *diffuse_color,
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unsigned char out[3])
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{
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float mask_color =
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gpu_color_from_mask((*CCG_elem_mask(key, a) +
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*CCG_elem_mask(key, b) +
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*CCG_elem_mask(key, c) +
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*CCG_elem_mask(key, d)) * 0.25f) * 255.0f;
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out[0] = diffuse_color[0] * mask_color;
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out[1] = diffuse_color[1] * mask_color;
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out[2] = diffuse_color[2] * mask_color;
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}
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void GPU_pbvh_mesh_buffers_update(
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GPU_PBVH_Buffers *buffers, const MVert *mvert,
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const int *vert_indices, int totvert, const float *vmask,
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const int (*face_vert_indices)[3],
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const int update_flags)
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{
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const bool show_diffuse_color = (update_flags & GPU_PBVH_BUFFERS_SHOW_DIFFUSE_COLOR) != 0;
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const bool show_mask = (update_flags & GPU_PBVH_BUFFERS_SHOW_MASK) != 0;
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buffers->vmask = vmask;
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buffers->show_diffuse_color = show_diffuse_color;
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buffers->show_mask = show_mask;
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{
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int totelem = (buffers->smooth ? totvert : (buffers->tot_tri * 3));
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float diffuse_color[4] = {0.8f, 0.8f, 0.8f, 0.8f};
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if (show_diffuse_color) {
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const MLoopTri *lt = &buffers->looptri[buffers->face_indices[0]];
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const MPoly *mp = &buffers->mpoly[lt->poly];
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gpu_material_diffuse_get(mp->mat_nr + 1, diffuse_color);
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}
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copy_v4_v4(buffers->diffuse_color, diffuse_color);
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uchar diffuse_color_ub[4];
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rgba_float_to_uchar(diffuse_color_ub, diffuse_color);
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/* Build VBO */
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if (gpu_pbvh_vert_buf_data_set(buffers, totelem)) {
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/* Vertex data is shared if smooth-shaded, but separate
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* copies are made for flat shading because normals
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* shouldn't be shared. */
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if (buffers->smooth) {
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for (uint i = 0; i < totvert; ++i) {
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const MVert *v = &mvert[vert_indices[i]];
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.pos, i, v->co);
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.nor, i, v->no);
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}
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for (uint i = 0; i < buffers->face_indices_len; i++) {
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const MLoopTri *lt = &buffers->looptri[buffers->face_indices[i]];
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for (uint j = 0; j < 3; j++) {
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int vidx = face_vert_indices[i][j];
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if (vmask && show_mask) {
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int v_index = buffers->mloop[lt->tri[j]].v;
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uchar color_ub[3];
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gpu_color_from_mask_copy(vmask[v_index], diffuse_color, color_ub);
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.col, vidx, color_ub);
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}
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else {
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.col, vidx, diffuse_color_ub);
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}
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}
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}
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}
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else {
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/* calculate normal for each polygon only once */
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unsigned int mpoly_prev = UINT_MAX;
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short no[3];
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int vbo_index = 0;
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for (uint i = 0; i < buffers->face_indices_len; i++) {
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const MLoopTri *lt = &buffers->looptri[buffers->face_indices[i]];
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const unsigned int vtri[3] = {
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buffers->mloop[lt->tri[0]].v,
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buffers->mloop[lt->tri[1]].v,
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buffers->mloop[lt->tri[2]].v,
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};
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if (paint_is_face_hidden(lt, mvert, buffers->mloop))
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continue;
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/* Face normal and mask */
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if (lt->poly != mpoly_prev) {
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const MPoly *mp = &buffers->mpoly[lt->poly];
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float fno[3];
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BKE_mesh_calc_poly_normal(mp, &buffers->mloop[mp->loopstart], mvert, fno);
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normal_float_to_short_v3(no, fno);
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mpoly_prev = lt->poly;
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}
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uchar color_ub[3];
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if (vmask && show_mask) {
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float fmask = (vmask[vtri[0]] + vmask[vtri[1]] + vmask[vtri[2]]) / 3.0f;
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gpu_color_from_mask_copy(fmask, diffuse_color, color_ub);
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}
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else {
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copy_v3_v3_uchar(color_ub, diffuse_color_ub);
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}
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for (uint j = 0; j < 3; j++) {
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const MVert *v = &mvert[vtri[j]];
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.pos, vbo_index, v->co);
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.nor, vbo_index, no);
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.col, vbo_index, color_ub);
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vbo_index++;
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}
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}
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}
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gpu_pbvh_batch_init(buffers);
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}
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}
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buffers->mvert = mvert;
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}
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GPU_PBVH_Buffers *GPU_pbvh_mesh_buffers_build(
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const int (*face_vert_indices)[3],
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const MPoly *mpoly, const MLoop *mloop, const MLoopTri *looptri,
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const MVert *mvert,
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const int *face_indices,
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const int face_indices_len)
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{
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GPU_PBVH_Buffers *buffers;
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int i, tottri;
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buffers = MEM_callocN(sizeof(GPU_PBVH_Buffers), "GPU_Buffers");
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/* smooth or flat for all */
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#if 0
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buffers->smooth = mpoly[looptri[face_indices[0]].poly].flag & ME_SMOOTH;
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#else
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/* for DrawManager we dont support mixed smooth/flat */
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buffers->smooth = (mpoly[0].flag & ME_SMOOTH) != 0;
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#endif
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buffers->show_diffuse_color = false;
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buffers->show_mask = true;
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/* Count the number of visible triangles */
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for (i = 0, tottri = 0; i < face_indices_len; ++i) {
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const MLoopTri *lt = &looptri[face_indices[i]];
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if (!paint_is_face_hidden(lt, mvert, mloop))
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tottri++;
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}
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if (tottri == 0) {
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buffers->tot_tri = 0;
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buffers->mpoly = mpoly;
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buffers->mloop = mloop;
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buffers->looptri = looptri;
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buffers->face_indices = face_indices;
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buffers->face_indices_len = 0;
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return buffers;
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}
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/* An element index buffer is used for smooth shading, but flat
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* shading requires separate vertex normals so an index buffer is
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* can't be used there. */
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if (buffers->smooth) {
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/* Fill the triangle buffer */
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buffers->index_buf = NULL;
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Gwn_IndexBufBuilder elb;
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GWN_indexbuf_init(&elb, GWN_PRIM_TRIS, tottri, INT_MAX);
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for (i = 0; i < face_indices_len; ++i) {
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const MLoopTri *lt = &looptri[face_indices[i]];
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/* Skip hidden faces */
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if (paint_is_face_hidden(lt, mvert, mloop))
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continue;
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GWN_indexbuf_add_tri_verts(&elb, UNPACK3(face_vert_indices[i]));
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}
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buffers->index_buf = GWN_indexbuf_build(&elb);
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}
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else {
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if (!buffers->is_index_buf_global) {
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GWN_INDEXBUF_DISCARD_SAFE(buffers->index_buf);
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}
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buffers->index_buf = NULL;
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buffers->is_index_buf_global = false;
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}
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buffers->tot_tri = tottri;
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buffers->mpoly = mpoly;
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buffers->mloop = mloop;
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buffers->looptri = looptri;
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buffers->face_indices = face_indices;
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buffers->face_indices_len = face_indices_len;
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return buffers;
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}
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void GPU_pbvh_grid_buffers_update(
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GPU_PBVH_Buffers *buffers, CCGElem **grids,
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const DMFlagMat *grid_flag_mats, int *grid_indices,
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int totgrid, const CCGKey *key,
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const int update_flags)
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{
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const bool show_diffuse_color = (update_flags & GPU_PBVH_BUFFERS_SHOW_DIFFUSE_COLOR) != 0;
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const bool show_mask = (update_flags & GPU_PBVH_BUFFERS_SHOW_MASK) != 0;
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int i, j, k, x, y;
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buffers->show_diffuse_color = show_diffuse_color;
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buffers->show_mask = show_mask;
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buffers->smooth = grid_flag_mats[grid_indices[0]].flag & ME_SMOOTH;
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/* Build VBO */
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if (buffers->index_buf) {
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const int has_mask = key->has_mask;
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float diffuse_color[4] = {0.8f, 0.8f, 0.8f, 1.0f};
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if (show_diffuse_color) {
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const DMFlagMat *flags = &grid_flag_mats[grid_indices[0]];
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gpu_material_diffuse_get(flags->mat_nr + 1, diffuse_color);
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}
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copy_v4_v4(buffers->diffuse_color, diffuse_color);
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uint vbo_index_offset = 0;
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/* Build VBO */
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if (gpu_pbvh_vert_buf_data_set(buffers, totgrid * key->grid_area)) {
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for (i = 0; i < totgrid; ++i) {
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CCGElem *grid = grids[grid_indices[i]];
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int vbo_index = vbo_index_offset;
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for (y = 0; y < key->grid_size; y++) {
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for (x = 0; x < key->grid_size; x++) {
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CCGElem *elem = CCG_grid_elem(key, grid, x, y);
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.pos, vbo_index, CCG_elem_co(key, elem));
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if (buffers->smooth) {
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short no_short[3];
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normal_float_to_short_v3(no_short, CCG_elem_no(key, elem));
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.nor, vbo_index, no_short);
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if (has_mask) {
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uchar color_ub[3];
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if (show_mask) {
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gpu_color_from_mask_copy(*CCG_elem_mask(key, elem),
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diffuse_color, color_ub);
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}
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else {
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unit_float_to_uchar_clamp_v3(color_ub, diffuse_color);
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}
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GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.col, vbo_index, color_ub);
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}
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}
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vbo_index += 1;
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}
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}
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if (!buffers->smooth) {
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for (j = 0; j < key->grid_size - 1; j++) {
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for (k = 0; k < key->grid_size - 1; k++) {
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CCGElem *elems[4] = {
|
|
CCG_grid_elem(key, grid, k, j + 1),
|
|
CCG_grid_elem(key, grid, k + 1, j + 1),
|
|
CCG_grid_elem(key, grid, k + 1, j),
|
|
CCG_grid_elem(key, grid, k, j)
|
|
};
|
|
float fno[3];
|
|
|
|
normal_quad_v3(fno,
|
|
CCG_elem_co(key, elems[0]),
|
|
CCG_elem_co(key, elems[1]),
|
|
CCG_elem_co(key, elems[2]),
|
|
CCG_elem_co(key, elems[3]));
|
|
|
|
vbo_index = vbo_index_offset + ((j + 1) * key->grid_size + k);
|
|
short no_short[3];
|
|
normal_float_to_short_v3(no_short, fno);
|
|
GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.nor, vbo_index, no_short);
|
|
|
|
if (has_mask) {
|
|
uchar color_ub[3];
|
|
if (show_mask) {
|
|
gpu_color_from_mask_quad_copy(key,
|
|
elems[0],
|
|
elems[1],
|
|
elems[2],
|
|
elems[3],
|
|
diffuse_color,
|
|
color_ub);
|
|
}
|
|
else {
|
|
unit_float_to_uchar_clamp_v3(color_ub, diffuse_color);
|
|
}
|
|
GWN_vertbuf_attr_set(buffers->vert_buf, g_vbo_id.col, vbo_index, color_ub);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
vbo_index_offset += key->grid_area;
|
|
}
|
|
|
|
gpu_pbvh_batch_init(buffers);
|
|
}
|
|
}
|
|
|
|
buffers->grids = grids;
|
|
buffers->grid_indices = grid_indices;
|
|
buffers->totgrid = totgrid;
|
|
buffers->grid_flag_mats = grid_flag_mats;
|
|
buffers->gridkey = *key;
|
|
|
|
//printf("node updated %p\n", buffers);
|
|
}
|
|
|
|
/* Build the element array buffer of grid indices using either
|
|
* unsigned shorts or unsigned ints. */
|
|
#define FILL_QUAD_BUFFER(max_vert_, tot_quad_, buffer_) \
|
|
{ \
|
|
int offset = 0; \
|
|
int i, j, k; \
|
|
\
|
|
Gwn_IndexBufBuilder elb; \
|
|
GWN_indexbuf_init( \
|
|
&elb, GWN_PRIM_TRIS, tot_quad_ * 2, max_vert_); \
|
|
\
|
|
/* Fill the buffer */ \
|
|
for (i = 0; i < totgrid; ++i) { \
|
|
BLI_bitmap *gh = NULL; \
|
|
if (grid_hidden) \
|
|
gh = grid_hidden[(grid_indices)[i]]; \
|
|
\
|
|
for (j = 0; j < gridsize - 1; ++j) { \
|
|
for (k = 0; k < gridsize - 1; ++k) { \
|
|
/* Skip hidden grid face */ \
|
|
if (gh && paint_is_grid_face_hidden( \
|
|
gh, gridsize, k, j)) \
|
|
{ \
|
|
continue; \
|
|
} \
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + j * gridsize + k + 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + j * gridsize + k); \
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + (j + 1) * gridsize + k); \
|
|
\
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + (j + 1) * gridsize + k + 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + j * gridsize + k + 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, offset + (j + 1) * gridsize + k); \
|
|
} \
|
|
} \
|
|
\
|
|
offset += gridsize * gridsize; \
|
|
} \
|
|
buffer_ = GWN_indexbuf_build(&elb); \
|
|
} (void)0
|
|
/* end FILL_QUAD_BUFFER */
|
|
|
|
static Gwn_IndexBuf *gpu_get_grid_buffer(
|
|
int gridsize, unsigned *totquad, GridCommonGPUBuffer **grid_common_gpu_buffer,
|
|
/* remove this arg when gawain gets base-vertex support! */
|
|
int totgrid)
|
|
{
|
|
/* used in the FILL_QUAD_BUFFER macro */
|
|
BLI_bitmap * const *grid_hidden = NULL;
|
|
const int *grid_indices = NULL;
|
|
// int totgrid = 1;
|
|
|
|
GridCommonGPUBuffer *gridbuff = *grid_common_gpu_buffer;
|
|
|
|
if (gridbuff == NULL) {
|
|
*grid_common_gpu_buffer = gridbuff = MEM_mallocN(sizeof(GridCommonGPUBuffer), __func__);
|
|
gridbuff->mres_buffer = NULL;
|
|
gridbuff->mres_prev_gridsize = -1;
|
|
gridbuff->mres_prev_totquad = 0;
|
|
}
|
|
|
|
/* VBO is already built */
|
|
if (gridbuff->mres_buffer && gridbuff->mres_prev_gridsize == gridsize) {
|
|
*totquad = gridbuff->mres_prev_totquad;
|
|
return gridbuff->mres_buffer;
|
|
}
|
|
/* we can't reuse old, delete the existing buffer */
|
|
else if (gridbuff->mres_buffer) {
|
|
GWN_indexbuf_discard(gridbuff->mres_buffer);
|
|
gridbuff->mres_buffer = NULL;
|
|
}
|
|
|
|
/* Build new VBO */
|
|
*totquad = (gridsize - 1) * (gridsize - 1) * totgrid;
|
|
int max_vert = gridsize * gridsize * totgrid;
|
|
|
|
FILL_QUAD_BUFFER(max_vert, *totquad, gridbuff->mres_buffer);
|
|
|
|
gridbuff->mres_prev_gridsize = gridsize;
|
|
gridbuff->mres_prev_totquad = *totquad;
|
|
return gridbuff->mres_buffer;
|
|
}
|
|
|
|
#define FILL_FAST_BUFFER() \
|
|
{ \
|
|
Gwn_IndexBufBuilder elb; \
|
|
GWN_indexbuf_init(&elb, GWN_PRIM_TRIS, 6 * totgrid, INT_MAX); \
|
|
for (int i = 0; i < totgrid; i++) { \
|
|
GWN_indexbuf_add_generic_vert(&elb, i * gridsize * gridsize + gridsize - 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, i * gridsize * gridsize); \
|
|
GWN_indexbuf_add_generic_vert(&elb, (i + 1) * gridsize * gridsize - gridsize); \
|
|
GWN_indexbuf_add_generic_vert(&elb, (i + 1) * gridsize * gridsize - 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, i * gridsize * gridsize + gridsize - 1); \
|
|
GWN_indexbuf_add_generic_vert(&elb, (i + 1) * gridsize * gridsize - gridsize); \
|
|
} \
|
|
buffers->index_buf_fast = GWN_indexbuf_build(&elb); \
|
|
} (void)0
|
|
|
|
GPU_PBVH_Buffers *GPU_pbvh_grid_buffers_build(
|
|
int *grid_indices, int totgrid, BLI_bitmap **grid_hidden, int gridsize, const CCGKey *UNUSED(key),
|
|
GridCommonGPUBuffer **grid_common_gpu_buffer)
|
|
{
|
|
GPU_PBVH_Buffers *buffers;
|
|
int totquad;
|
|
int fully_visible_totquad = (gridsize - 1) * (gridsize - 1) * totgrid;
|
|
|
|
buffers = MEM_callocN(sizeof(GPU_PBVH_Buffers), "GPU_Buffers");
|
|
buffers->grid_hidden = grid_hidden;
|
|
buffers->totgrid = totgrid;
|
|
|
|
buffers->show_diffuse_color = false;
|
|
buffers->show_mask = true;
|
|
|
|
/* Count the number of quads */
|
|
totquad = BKE_pbvh_count_grid_quads(grid_hidden, grid_indices, totgrid, gridsize);
|
|
|
|
/* totally hidden node, return here to avoid BufferData with zero below. */
|
|
if (totquad == 0)
|
|
return buffers;
|
|
|
|
/* create and fill indices of the fast buffer too */
|
|
FILL_FAST_BUFFER();
|
|
|
|
if (totquad == fully_visible_totquad) {
|
|
buffers->index_buf = gpu_get_grid_buffer(
|
|
gridsize, &buffers->tot_quad, grid_common_gpu_buffer, totgrid);
|
|
buffers->has_hidden = false;
|
|
buffers->is_index_buf_global = true;
|
|
}
|
|
else {
|
|
uint max_vert = totgrid * gridsize * gridsize;
|
|
buffers->tot_quad = totquad;
|
|
|
|
FILL_QUAD_BUFFER(max_vert, totquad, buffers->index_buf);
|
|
|
|
buffers->has_hidden = false;
|
|
buffers->is_index_buf_global = false;
|
|
}
|
|
|
|
#ifdef USE_BASE_ELEM
|
|
/* Build coord/normal VBO */
|
|
if (GLEW_ARB_draw_elements_base_vertex /* 3.2 */) {
|
|
int i;
|
|
buffers->baseelemarray = MEM_mallocN(sizeof(int) * totgrid * 2, "GPU_PBVH_Buffers.baseelemarray");
|
|
buffers->baseindex = MEM_mallocN(sizeof(void *) * totgrid, "GPU_PBVH_Buffers.baseindex");
|
|
for (i = 0; i < totgrid; i++) {
|
|
buffers->baseelemarray[i] = buffers->tot_quad * 6;
|
|
buffers->baseelemarray[i + totgrid] = i * key->grid_area;
|
|
buffers->baseindex[i] = NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return buffers;
|
|
}
|
|
|
|
#undef FILL_QUAD_BUFFER
|
|
|
|
/* Output a BMVert into a VertexBufferFormat array
|
|
*
|
|
* The vertex is skipped if hidden, otherwise the output goes into
|
|
* index '*v_index' in the 'vert_data' array and '*v_index' is
|
|
* incremented.
|
|
*/
|
|
static void gpu_bmesh_vert_to_buffer_copy__gwn(
|
|
BMVert *v,
|
|
Gwn_VertBuf *vert_buf,
|
|
int *v_index,
|
|
const float fno[3],
|
|
const float *fmask,
|
|
const int cd_vert_mask_offset,
|
|
const float diffuse_color[4],
|
|
const bool show_mask)
|
|
{
|
|
if (!BM_elem_flag_test(v, BM_ELEM_HIDDEN)) {
|
|
|
|
/* Set coord, normal, and mask */
|
|
GWN_vertbuf_attr_set(vert_buf, g_vbo_id.pos, *v_index, v->co);
|
|
|
|
{
|
|
short no_short[3];
|
|
normal_float_to_short_v3(no_short, fno ? fno : v->no);
|
|
GWN_vertbuf_attr_set(vert_buf, g_vbo_id.nor, *v_index, no_short);
|
|
}
|
|
|
|
{
|
|
uchar color_ub[3];
|
|
float effective_mask;
|
|
if (show_mask) {
|
|
effective_mask = fmask ? *fmask
|
|
: BM_ELEM_CD_GET_FLOAT(v, cd_vert_mask_offset);
|
|
}
|
|
else {
|
|
effective_mask = 0.0f;
|
|
}
|
|
|
|
gpu_color_from_mask_copy(
|
|
effective_mask,
|
|
diffuse_color,
|
|
color_ub);
|
|
GWN_vertbuf_attr_set(vert_buf, g_vbo_id.col, *v_index, color_ub);
|
|
}
|
|
|
|
/* Assign index for use in the triangle index buffer */
|
|
/* note: caller must set: bm->elem_index_dirty |= BM_VERT; */
|
|
BM_elem_index_set(v, (*v_index)); /* set_dirty! */
|
|
|
|
(*v_index)++;
|
|
}
|
|
}
|
|
|
|
/* Return the total number of vertices that don't have BM_ELEM_HIDDEN set */
|
|
static int gpu_bmesh_vert_visible_count(GSet *bm_unique_verts,
|
|
GSet *bm_other_verts)
|
|
{
|
|
GSetIterator gs_iter;
|
|
int totvert = 0;
|
|
|
|
GSET_ITER (gs_iter, bm_unique_verts) {
|
|
BMVert *v = BLI_gsetIterator_getKey(&gs_iter);
|
|
if (!BM_elem_flag_test(v, BM_ELEM_HIDDEN))
|
|
totvert++;
|
|
}
|
|
GSET_ITER (gs_iter, bm_other_verts) {
|
|
BMVert *v = BLI_gsetIterator_getKey(&gs_iter);
|
|
if (!BM_elem_flag_test(v, BM_ELEM_HIDDEN))
|
|
totvert++;
|
|
}
|
|
|
|
return totvert;
|
|
}
|
|
|
|
/* Return the total number of visible faces */
|
|
static int gpu_bmesh_face_visible_count(GSet *bm_faces)
|
|
{
|
|
GSetIterator gh_iter;
|
|
int totface = 0;
|
|
|
|
GSET_ITER (gh_iter, bm_faces) {
|
|
BMFace *f = BLI_gsetIterator_getKey(&gh_iter);
|
|
|
|
if (!BM_elem_flag_test(f, BM_ELEM_HIDDEN))
|
|
totface++;
|
|
}
|
|
|
|
return totface;
|
|
}
|
|
|
|
/* Creates a vertex buffer (coordinate, normal, color) and, if smooth
|
|
* shading, an element index buffer. */
|
|
void GPU_pbvh_bmesh_buffers_update(
|
|
GPU_PBVH_Buffers *buffers,
|
|
BMesh *bm,
|
|
GSet *bm_faces,
|
|
GSet *bm_unique_verts,
|
|
GSet *bm_other_verts,
|
|
const int update_flags)
|
|
{
|
|
const bool show_diffuse_color = (update_flags & GPU_PBVH_BUFFERS_SHOW_DIFFUSE_COLOR) != 0;
|
|
const bool show_mask = (update_flags & GPU_PBVH_BUFFERS_SHOW_MASK) != 0;
|
|
int tottri, totvert, maxvert = 0;
|
|
float diffuse_color[4] = {0.8f, 0.8f, 0.8f, 1.0f};
|
|
|
|
/* TODO, make mask layer optional for bmesh buffer */
|
|
const int cd_vert_mask_offset = CustomData_get_offset(&bm->vdata, CD_PAINT_MASK);
|
|
|
|
buffers->show_diffuse_color = show_diffuse_color;
|
|
buffers->show_mask = show_mask;
|
|
|
|
/* Count visible triangles */
|
|
tottri = gpu_bmesh_face_visible_count(bm_faces);
|
|
|
|
if (buffers->smooth) {
|
|
/* Count visible vertices */
|
|
totvert = gpu_bmesh_vert_visible_count(bm_unique_verts, bm_other_verts);
|
|
}
|
|
else
|
|
totvert = tottri * 3;
|
|
|
|
if (!tottri) {
|
|
buffers->tot_tri = 0;
|
|
return;
|
|
}
|
|
|
|
if (show_diffuse_color) {
|
|
/* due to dynamic nature of dyntopo, only get first material */
|
|
GSetIterator gs_iter;
|
|
BMFace *f;
|
|
BLI_gsetIterator_init(&gs_iter, bm_faces);
|
|
f = BLI_gsetIterator_getKey(&gs_iter);
|
|
gpu_material_diffuse_get(f->mat_nr + 1, diffuse_color);
|
|
}
|
|
|
|
copy_v4_v4(buffers->diffuse_color, diffuse_color);
|
|
|
|
/* Fill vertex buffer */
|
|
if (gpu_pbvh_vert_buf_data_set(buffers, totvert)) {
|
|
int v_index = 0;
|
|
|
|
if (buffers->smooth) {
|
|
GSetIterator gs_iter;
|
|
|
|
/* Vertices get an index assigned for use in the triangle
|
|
* index buffer */
|
|
bm->elem_index_dirty |= BM_VERT;
|
|
|
|
GSET_ITER (gs_iter, bm_unique_verts) {
|
|
gpu_bmesh_vert_to_buffer_copy__gwn(
|
|
BLI_gsetIterator_getKey(&gs_iter),
|
|
buffers->vert_buf, &v_index, NULL, NULL,
|
|
cd_vert_mask_offset, diffuse_color,
|
|
show_mask);
|
|
}
|
|
|
|
GSET_ITER (gs_iter, bm_other_verts) {
|
|
gpu_bmesh_vert_to_buffer_copy__gwn(
|
|
BLI_gsetIterator_getKey(&gs_iter),
|
|
buffers->vert_buf, &v_index, NULL, NULL,
|
|
cd_vert_mask_offset, diffuse_color,
|
|
show_mask);
|
|
}
|
|
|
|
maxvert = v_index;
|
|
}
|
|
else {
|
|
GSetIterator gs_iter;
|
|
|
|
GSET_ITER (gs_iter, bm_faces) {
|
|
BMFace *f = BLI_gsetIterator_getKey(&gs_iter);
|
|
|
|
BLI_assert(f->len == 3);
|
|
|
|
if (!BM_elem_flag_test(f, BM_ELEM_HIDDEN)) {
|
|
BMVert *v[3];
|
|
float fmask = 0;
|
|
int i;
|
|
|
|
#if 0
|
|
BM_iter_as_array(bm, BM_VERTS_OF_FACE, f, (void **)v, 3);
|
|
#endif
|
|
BM_face_as_array_vert_tri(f, v);
|
|
|
|
/* Average mask value */
|
|
for (i = 0; i < 3; i++) {
|
|
fmask += BM_ELEM_CD_GET_FLOAT(v[i], cd_vert_mask_offset);
|
|
}
|
|
fmask /= 3.0f;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
gpu_bmesh_vert_to_buffer_copy__gwn(
|
|
v[i], buffers->vert_buf,
|
|
&v_index, f->no, &fmask,
|
|
cd_vert_mask_offset, diffuse_color,
|
|
show_mask);
|
|
}
|
|
}
|
|
}
|
|
|
|
buffers->tot_tri = tottri;
|
|
}
|
|
|
|
/* gpu_bmesh_vert_to_buffer_copy sets dirty index values */
|
|
bm->elem_index_dirty |= BM_VERT;
|
|
}
|
|
else {
|
|
/* Memory map failed */
|
|
return;
|
|
}
|
|
|
|
if (buffers->smooth) {
|
|
/* Fill the triangle buffer */
|
|
buffers->index_buf = NULL;
|
|
Gwn_IndexBufBuilder elb;
|
|
GWN_indexbuf_init(&elb, GWN_PRIM_TRIS, tottri, maxvert);
|
|
|
|
/* Initialize triangle index buffer */
|
|
buffers->is_index_buf_global = false;
|
|
|
|
/* Fill triangle index buffer */
|
|
|
|
{
|
|
GSetIterator gs_iter;
|
|
|
|
GSET_ITER (gs_iter, bm_faces) {
|
|
BMFace *f = BLI_gsetIterator_getKey(&gs_iter);
|
|
|
|
if (!BM_elem_flag_test(f, BM_ELEM_HIDDEN)) {
|
|
BMLoop *l_iter;
|
|
BMLoop *l_first;
|
|
|
|
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
|
|
do {
|
|
GWN_indexbuf_add_generic_vert(&elb, BM_elem_index_get(l_iter->v));
|
|
} while ((l_iter = l_iter->next) != l_first);
|
|
}
|
|
}
|
|
|
|
buffers->tot_tri = tottri;
|
|
|
|
if (buffers->index_buf == NULL) {
|
|
buffers->index_buf = GWN_indexbuf_build(&elb);
|
|
}
|
|
else {
|
|
GWN_indexbuf_build_in_place(&elb, buffers->index_buf);
|
|
}
|
|
}
|
|
}
|
|
else if (buffers->index_buf) {
|
|
if (!buffers->is_index_buf_global) {
|
|
GWN_INDEXBUF_DISCARD_SAFE(buffers->index_buf);
|
|
}
|
|
buffers->index_buf = NULL;
|
|
buffers->is_index_buf_global = false;
|
|
}
|
|
|
|
gpu_pbvh_batch_init(buffers);
|
|
}
|
|
|
|
GPU_PBVH_Buffers *GPU_pbvh_bmesh_buffers_build(bool smooth_shading)
|
|
{
|
|
GPU_PBVH_Buffers *buffers;
|
|
|
|
buffers = MEM_callocN(sizeof(GPU_PBVH_Buffers), "GPU_Buffers");
|
|
buffers->use_bmesh = true;
|
|
buffers->smooth = smooth_shading;
|
|
buffers->show_diffuse_color = false;
|
|
buffers->show_mask = true;
|
|
|
|
return buffers;
|
|
}
|
|
|
|
Gwn_Batch *GPU_pbvh_buffers_batch_get(GPU_PBVH_Buffers *buffers, bool fast)
|
|
{
|
|
return (fast && buffers->triangles_fast) ?
|
|
buffers->triangles_fast : buffers->triangles;
|
|
}
|
|
|
|
bool GPU_pbvh_buffers_diffuse_changed(GPU_PBVH_Buffers *buffers, GSet *bm_faces, bool show_diffuse_color)
|
|
{
|
|
float diffuse_color[4];
|
|
|
|
if (buffers->show_diffuse_color != show_diffuse_color)
|
|
return true;
|
|
|
|
if (buffers->show_diffuse_color == false)
|
|
return false;
|
|
|
|
if (buffers->looptri) {
|
|
const MLoopTri *lt = &buffers->looptri[buffers->face_indices[0]];
|
|
const MPoly *mp = &buffers->mpoly[lt->poly];
|
|
|
|
gpu_material_diffuse_get(mp->mat_nr + 1, diffuse_color);
|
|
}
|
|
else if (buffers->use_bmesh) {
|
|
/* due to dynamic nature of dyntopo, only get first material */
|
|
if (BLI_gset_len(bm_faces) > 0) {
|
|
GSetIterator gs_iter;
|
|
BMFace *f;
|
|
|
|
BLI_gsetIterator_init(&gs_iter, bm_faces);
|
|
f = BLI_gsetIterator_getKey(&gs_iter);
|
|
gpu_material_diffuse_get(f->mat_nr + 1, diffuse_color);
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
const DMFlagMat *flags = &buffers->grid_flag_mats[buffers->grid_indices[0]];
|
|
|
|
gpu_material_diffuse_get(flags->mat_nr + 1, diffuse_color);
|
|
}
|
|
|
|
return !equals_v3v3(diffuse_color, buffers->diffuse_color);
|
|
}
|
|
|
|
bool GPU_pbvh_buffers_mask_changed(GPU_PBVH_Buffers *buffers, bool show_mask)
|
|
{
|
|
return (buffers->show_mask != show_mask);
|
|
}
|
|
|
|
void GPU_pbvh_buffers_free(GPU_PBVH_Buffers *buffers)
|
|
{
|
|
if (buffers) {
|
|
GWN_BATCH_DISCARD_SAFE(buffers->triangles);
|
|
GWN_BATCH_DISCARD_SAFE(buffers->triangles_fast);
|
|
if (!buffers->is_index_buf_global) {
|
|
GWN_INDEXBUF_DISCARD_SAFE(buffers->index_buf);
|
|
}
|
|
GWN_INDEXBUF_DISCARD_SAFE(buffers->index_buf_fast);
|
|
GWN_VERTBUF_DISCARD_SAFE(buffers->vert_buf);
|
|
|
|
#ifdef USE_BASE_ELEM
|
|
if (buffers->baseelemarray)
|
|
MEM_freeN(buffers->baseelemarray);
|
|
if (buffers->baseindex)
|
|
MEM_freeN(buffers->baseindex);
|
|
#endif
|
|
|
|
MEM_freeN(buffers);
|
|
}
|
|
}
|
|
|
|
void GPU_pbvh_multires_buffers_free(GridCommonGPUBuffer **grid_common_gpu_buffer)
|
|
{
|
|
GridCommonGPUBuffer *gridbuff = *grid_common_gpu_buffer;
|
|
|
|
if (gridbuff) {
|
|
if (gridbuff->mres_buffer) {
|
|
BLI_mutex_lock(&buffer_mutex);
|
|
GWN_INDEXBUF_DISCARD_SAFE(gridbuff->mres_buffer);
|
|
BLI_mutex_unlock(&buffer_mutex);
|
|
}
|
|
MEM_freeN(gridbuff);
|
|
*grid_common_gpu_buffer = NULL;
|
|
}
|
|
}
|
|
|
|
/* debug function, draws the pbvh BB */
|
|
void GPU_pbvh_BB_draw(float min[3], float max[3], bool leaf, unsigned int pos)
|
|
{
|
|
if (leaf)
|
|
immUniformColor4f(0.0, 1.0, 0.0, 0.5);
|
|
else
|
|
immUniformColor4f(1.0, 0.0, 0.0, 0.5);
|
|
|
|
/* TODO(merwin): revisit this after we have mutable VertexBuffers
|
|
* could keep a static batch & index buffer, change the VBO contents per draw
|
|
*/
|
|
|
|
immBegin(GWN_PRIM_LINES, 24);
|
|
|
|
/* top */
|
|
immVertex3f(pos, min[0], min[1], max[2]);
|
|
immVertex3f(pos, min[0], max[1], max[2]);
|
|
|
|
immVertex3f(pos, min[0], max[1], max[2]);
|
|
immVertex3f(pos, max[0], max[1], max[2]);
|
|
|
|
immVertex3f(pos, max[0], max[1], max[2]);
|
|
immVertex3f(pos, max[0], min[1], max[2]);
|
|
|
|
immVertex3f(pos, max[0], min[1], max[2]);
|
|
immVertex3f(pos, min[0], min[1], max[2]);
|
|
|
|
/* bottom */
|
|
immVertex3f(pos, min[0], min[1], min[2]);
|
|
immVertex3f(pos, min[0], max[1], min[2]);
|
|
|
|
immVertex3f(pos, min[0], max[1], min[2]);
|
|
immVertex3f(pos, max[0], max[1], min[2]);
|
|
|
|
immVertex3f(pos, max[0], max[1], min[2]);
|
|
immVertex3f(pos, max[0], min[1], min[2]);
|
|
|
|
immVertex3f(pos, max[0], min[1], min[2]);
|
|
immVertex3f(pos, min[0], min[1], min[2]);
|
|
|
|
/* sides */
|
|
immVertex3f(pos, min[0], min[1], min[2]);
|
|
immVertex3f(pos, min[0], min[1], max[2]);
|
|
|
|
immVertex3f(pos, min[0], max[1], min[2]);
|
|
immVertex3f(pos, min[0], max[1], max[2]);
|
|
|
|
immVertex3f(pos, max[0], max[1], min[2]);
|
|
immVertex3f(pos, max[0], max[1], max[2]);
|
|
|
|
immVertex3f(pos, max[0], min[1], min[2]);
|
|
immVertex3f(pos, max[0], min[1], max[2]);
|
|
|
|
immEnd();
|
|
}
|
|
|
|
void GPU_pbvh_fix_linking()
|
|
{
|
|
}
|