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blender-archive/source/blender/editors/space_view3d/drawmesh.c
Sergey Sharybin 5c6f6301b0 Image thread safe improvements 
This commit makes BKE_image_acquire_ibuf referencing result, which means once
some area requested for image buffer, it'll be guaranteed this buffer wouldn't
be freed by image signal.

To de-reference buffer BKE_image_release_ibuf should now always be used.

To make referencing working correct we can not rely on result of
image_get_ibuf_threadsafe called outside from thread lock. This is so because
we need to guarantee getting image buffer from list of loaded buffers and it's
referencing happens atomic. Without lock here it is possible that between call
of image_get_ibuf_threadsafe and referencing the buffer IMA_SIGNAL_FREE would
be called. Image signal handling too is blocking now to prevent such a
situation.

Threads are locking by spinlock, which are faster than mutexes. There were some
slowdown reports in the past about render slowdown when using OSX on Xeon CPU.
It shouldn't happen with spin locks, but more tests on different hardware would
be really welcome. So far can not see speed regressions on own computers.

This commit also removes BKE_image_get_ibuf, because it was not so intuitive
when get_ibuf and acquire_ibuf should be used.

Thanks to Ton and Brecht for discussion/review :)
2012-11-15 15:59:58 +00:00

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* Contributor(s): Blender Foundation, full update, glsl support
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/space_view3d/drawmesh.c
* \ingroup spview3d
*/
#include <string.h>
#include <math.h>
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_edgehash.h"
#include "BLI_utildefines.h"
#include "DNA_material_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_node_types.h"
#include "DNA_object_types.h"
#include "DNA_property_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "DNA_windowmanager_types.h"
#include "BKE_DerivedMesh.h"
#include "BKE_effect.h"
#include "BKE_image.h"
#include "BKE_material.h"
#include "BKE_paint.h"
#include "BKE_property.h"
#include "BKE_tessmesh.h"
#include "BKE_scene.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "UI_resources.h"
#include "GPU_buffers.h"
#include "GPU_extensions.h"
#include "GPU_draw.h"
#include "GPU_material.h"
#include "ED_mesh.h"
#include "ED_uvedit.h"
#include "view3d_intern.h" /* own include */
/* user data structures for derived mesh callbacks */
typedef struct drawMeshFaceSelect_userData {
Mesh *me;
EdgeHash *eh;
} drawMeshFaceSelect_userData;
typedef struct drawEMTFMapped_userData {
BMEditMesh *em;
short has_mcol;
short has_mtface;
MFace *mf;
MTFace *tf;
} drawEMTFMapped_userData;
typedef struct drawTFace_userData {
MFace *mf;
MTFace *tf;
} drawTFace_userData;
/**************************** Face Select Mode *******************************/
/* Flags for marked edges */
enum {
eEdge_Visible = (1 << 0),
eEdge_Select = (1 << 1),
};
/* Creates a hash of edges to flags indicating selected/visible */
static void get_marked_edge_info__orFlags(EdgeHash *eh, int v0, int v1, int flags)
{
int *flags_p;
if (!BLI_edgehash_haskey(eh, v0, v1))
BLI_edgehash_insert(eh, v0, v1, NULL);
flags_p = (int *) BLI_edgehash_lookup_p(eh, v0, v1);
*flags_p |= flags;
}
static EdgeHash *get_tface_mesh_marked_edge_info(Mesh *me)
{
EdgeHash *eh = BLI_edgehash_new();
MPoly *mp;
MLoop *ml;
MLoop *ml_next;
int i, j;
for (i = 0; i < me->totpoly; i++) {
mp = &me->mpoly[i];
if (!(mp->flag & ME_HIDE)) {
unsigned int flags = eEdge_Visible;
if (mp->flag & ME_FACE_SEL) flags |= eEdge_Select;
ml = me->mloop + mp->loopstart;
for (j = 0; j < mp->totloop; j++, ml++) {
ml_next = ME_POLY_LOOP_NEXT(me->mloop, mp, j);
get_marked_edge_info__orFlags(eh, ml->v, ml_next->v, flags);
}
}
}
return eh;
}
static DMDrawOption draw_mesh_face_select__setHiddenOpts(void *userData, int index)
{
drawMeshFaceSelect_userData *data = userData;
Mesh *me = data->me;
MEdge *med = &me->medge[index];
uintptr_t flags = (intptr_t) BLI_edgehash_lookup(data->eh, med->v1, med->v2);
if (me->drawflag & ME_DRAWEDGES) {
if ((me->drawflag & ME_HIDDENEDGES) || (flags & eEdge_Visible))
return DM_DRAW_OPTION_NORMAL;
else
return DM_DRAW_OPTION_SKIP;
}
else if (flags & eEdge_Select)
return DM_DRAW_OPTION_NORMAL;
else
return DM_DRAW_OPTION_SKIP;
}
static DMDrawOption draw_mesh_face_select__setSelectOpts(void *userData, int index)
{
drawMeshFaceSelect_userData *data = userData;
MEdge *med = &data->me->medge[index];
uintptr_t flags = (intptr_t) BLI_edgehash_lookup(data->eh, med->v1, med->v2);
return (flags & eEdge_Select) ? DM_DRAW_OPTION_NORMAL : DM_DRAW_OPTION_SKIP;
}
/* draws unselected */
static DMDrawOption draw_mesh_face_select__drawFaceOptsInv(void *userData, int index)
{
Mesh *me = (Mesh *)userData;
MPoly *mpoly = &me->mpoly[index];
if (!(mpoly->flag & ME_HIDE) && !(mpoly->flag & ME_FACE_SEL))
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
else
return DM_DRAW_OPTION_SKIP;
}
static void draw_mesh_face_select(RegionView3D *rv3d, Mesh *me, DerivedMesh *dm)
{
drawMeshFaceSelect_userData data;
data.me = me;
data.eh = get_tface_mesh_marked_edge_info(me);
glEnable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
bglPolygonOffset(rv3d->dist, 1.0);
/* Draw (Hidden) Edges */
setlinestyle(1);
UI_ThemeColor(TH_EDGE_FACESEL);
dm->drawMappedEdges(dm, draw_mesh_face_select__setHiddenOpts, &data);
setlinestyle(0);
/* Draw Selected Faces */
if (me->drawflag & ME_DRAWFACES) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* dull unselected faces so as not to get in the way of seeing color */
glColor4ub(96, 96, 96, 64);
dm->drawMappedFaces(dm, draw_mesh_face_select__drawFaceOptsInv, NULL, NULL, (void *)me, 0);
glDisable(GL_BLEND);
}
bglPolygonOffset(rv3d->dist, 1.0);
/* Draw Stippled Outline for selected faces */
glColor3ub(255, 255, 255);
setlinestyle(1);
dm->drawMappedEdges(dm, draw_mesh_face_select__setSelectOpts, &data);
setlinestyle(0);
bglPolygonOffset(rv3d->dist, 0.0); /* resets correctly now, even after calling accumulated offsets */
BLI_edgehash_free(data.eh, NULL);
}
/***************************** Texture Drawing ******************************/
static Material *give_current_material_or_def(Object *ob, int matnr)
{
extern Material defmaterial; /* render module abuse... */
Material *ma = give_current_material(ob, matnr);
return ma ? ma : &defmaterial;
}
/* Icky globals, fix with userdata parameter */
static struct TextureDrawState {
Object *ob;
int is_lit, is_tex;
int color_profile;
unsigned char obcol[4];
} Gtexdraw = {NULL, 0, 0, 0, {0, 0, 0, 0}};
static int set_draw_settings_cached(int clearcache, MTFace *texface, Material *ma, struct TextureDrawState gtexdraw)
{
static Material *c_ma;
static int c_textured;
static MTFace c_texface;
static int c_backculled;
static int c_badtex;
static int c_lit;
static int c_has_texface;
Object *litob = NULL; /* to get mode to turn off mipmap in painting mode */
int backculled = GEMAT_BACKCULL;
int alphablend = 0;
int textured = 0;
int lit = 0;
int has_texface = texface != NULL;
int need_set_tpage = FALSE;
if (clearcache) {
c_textured = c_lit = c_backculled = -1;
memset(&c_texface, 0, sizeof(MTFace));
c_badtex = 0;
c_has_texface = -1;
}
else {
textured = gtexdraw.is_tex;
litob = gtexdraw.ob;
}
/* convert number of lights into boolean */
if (gtexdraw.is_lit) lit = 1;
if (ma) {
alphablend = ma->game.alpha_blend;
if (ma->mode & MA_SHLESS) lit = 0;
backculled = ma->game.flag & GEMAT_BACKCULL;
}
if (texface) {
textured = textured && (texface->tpage);
/* no material, render alpha if texture has depth=32 */
if (!ma && BKE_image_has_alpha(texface->tpage))
alphablend = GPU_BLEND_ALPHA;
}
else
textured = 0;
if (backculled != c_backculled) {
if (backculled) glEnable(GL_CULL_FACE);
else glDisable(GL_CULL_FACE);
c_backculled = backculled;
}
/* need to re-set tpage if textured flag changed or existsment of texface changed.. */
need_set_tpage = textured != c_textured || has_texface != c_has_texface;
/* ..or if settings inside texface were changed (if texface was used) */
need_set_tpage |= texface && memcmp(&c_texface, texface, sizeof(c_texface));
if (need_set_tpage) {
if (textured) {
c_badtex = !GPU_set_tpage(texface, !(litob->mode & OB_MODE_TEXTURE_PAINT), alphablend);
}
else {
GPU_set_tpage(NULL, 0, 0);
c_badtex = 0;
}
c_textured = textured;
c_has_texface = has_texface;
if (texface)
memcpy(&c_texface, texface, sizeof(c_texface));
}
if (c_badtex) lit = 0;
if (lit != c_lit || ma != c_ma) {
if (lit) {
float spec[4];
if (!ma) ma = give_current_material_or_def(NULL, 0); /* default material */
spec[0] = ma->spec * ma->specr;
spec[1] = ma->spec * ma->specg;
spec[2] = ma->spec * ma->specb;
spec[3] = 1.0;
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, spec);
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
glMateriali(GL_FRONT_AND_BACK, GL_SHININESS, CLAMPIS(ma->har, 0, 128));
glEnable(GL_LIGHTING);
glEnable(GL_COLOR_MATERIAL);
}
else {
glDisable(GL_LIGHTING);
glDisable(GL_COLOR_MATERIAL);
}
c_lit = lit;
}
return c_badtex;
}
static void draw_textured_begin(Scene *scene, View3D *v3d, RegionView3D *rv3d, Object *ob)
{
unsigned char obcol[4];
int is_tex, solidtex;
Mesh *me = ob->data;
/* XXX scene->obedit warning */
/* texture draw is abused for mask selection mode, do this so wire draw
* with face selection in weight paint is not lit. */
if ((v3d->drawtype <= OB_WIRE) && (ob->mode & (OB_MODE_VERTEX_PAINT | OB_MODE_WEIGHT_PAINT))) {
solidtex = FALSE;
Gtexdraw.is_lit = 0;
}
else if (v3d->drawtype == OB_SOLID || ((ob->mode & OB_MODE_EDIT) && v3d->drawtype != OB_TEXTURE)) {
/* draw with default lights in solid draw mode and edit mode */
solidtex = TRUE;
Gtexdraw.is_lit = -1;
}
else {
/* draw with lights in the scene otherwise */
solidtex = FALSE;
Gtexdraw.is_lit = GPU_scene_object_lights(scene, ob, v3d->lay, rv3d->viewmat, !rv3d->is_persp);
}
rgba_float_to_uchar(obcol, ob->col);
if (solidtex || v3d->drawtype == OB_TEXTURE) is_tex = 1;
else is_tex = 0;
Gtexdraw.ob = ob;
Gtexdraw.is_tex = is_tex;
Gtexdraw.color_profile = BKE_scene_check_color_management_enabled(scene);
memcpy(Gtexdraw.obcol, obcol, sizeof(obcol));
set_draw_settings_cached(1, NULL, NULL, Gtexdraw);
glShadeModel(GL_SMOOTH);
if (v3d->flag2 & V3D_BACKFACE_CULLING) {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
}
else {
glDisable(GL_CULL_FACE);
}
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, (me->flag & ME_TWOSIDED) ? GL_TRUE : GL_FALSE);
}
static void draw_textured_end(void)
{
/* switch off textures */
GPU_set_tpage(NULL, 0, 0);
glShadeModel(GL_FLAT);
glDisable(GL_CULL_FACE);
/* XXX, bad patch - GPU_default_lights() calls
* glLightfv(GL_POSITION, ...) which
* is transformed by the current matrix... we
* need to make sure that matrix is identity.
*
* It would be better if drawmesh.c kept track
* of and restored the light settings it changed.
* - zr
*/
glPushMatrix();
glLoadIdentity();
GPU_default_lights();
glPopMatrix();
}
static DMDrawOption draw_tface__set_draw_legacy(MTFace *tface, int has_mcol, int matnr)
{
Material *ma = give_current_material(Gtexdraw.ob, matnr + 1);
int validtexture = 0;
if (ma && (ma->game.flag & GEMAT_INVISIBLE))
return DM_DRAW_OPTION_SKIP;
validtexture = set_draw_settings_cached(0, tface, ma, Gtexdraw);
if (tface && validtexture) {
glColor3ub(0xFF, 0x00, 0xFF);
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
}
else if (ma && (ma->shade_flag & MA_OBCOLOR)) {
glColor3ubv(Gtexdraw.obcol);
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
}
else if (!has_mcol) {
if (tface) glColor3f(1.0, 1.0, 1.0);
else {
if (ma) {
float col[3];
if (Gtexdraw.color_profile) linearrgb_to_srgb_v3_v3(col, &ma->r);
else copy_v3_v3(col, &ma->r);
glColor3fv(col);
}
else glColor3f(1.0, 1.0, 1.0);
}
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
}
else {
return DM_DRAW_OPTION_NORMAL; /* Set color from mcol */
}
}
static DMDrawOption draw_mcol__set_draw_legacy(MTFace *UNUSED(tface), int has_mcol, int UNUSED(matnr))
{
if (has_mcol)
return DM_DRAW_OPTION_NORMAL;
else
return DM_DRAW_OPTION_NO_MCOL;
}
static DMDrawOption draw_tface__set_draw(MTFace *tface, int has_mcol, int matnr)
{
Material *ma = give_current_material(Gtexdraw.ob, matnr + 1);
if (ma && (ma->game.flag & GEMAT_INVISIBLE)) return 0;
if (tface && set_draw_settings_cached(0, tface, ma, Gtexdraw)) {
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
}
else if (tface && (tface->mode & TF_OBCOL)) {
return DM_DRAW_OPTION_NO_MCOL; /* Don't set color */
}
else if (!has_mcol) {
/* XXX: this return value looks wrong (and doesn't match comment) */
return DM_DRAW_OPTION_NORMAL; /* Don't set color */
}
else {
return DM_DRAW_OPTION_NORMAL; /* Set color from mcol */
}
}
static void update_tface_color_layer(DerivedMesh *dm)
{
MTFace *tface = DM_get_tessface_data_layer(dm, CD_MTFACE);
MFace *mface = dm->getTessFaceArray(dm);
MCol *finalCol;
int i, j;
MCol *mcol = dm->getTessFaceDataArray(dm, CD_PREVIEW_MCOL);
if (!mcol)
mcol = dm->getTessFaceDataArray(dm, CD_MCOL);
if (CustomData_has_layer(&dm->faceData, CD_TEXTURE_MCOL)) {
finalCol = CustomData_get_layer(&dm->faceData, CD_TEXTURE_MCOL);
}
else {
finalCol = MEM_mallocN(sizeof(MCol) * 4 * dm->getNumTessFaces(dm), "add_tface_color_layer");
CustomData_add_layer(&dm->faceData, CD_TEXTURE_MCOL, CD_ASSIGN, finalCol, dm->numTessFaceData);
}
for (i = 0; i < dm->getNumTessFaces(dm); i++) {
Material *ma = give_current_material(Gtexdraw.ob, mface[i].mat_nr + 1);
if (ma && (ma->game.flag & GEMAT_INVISIBLE)) {
if (mcol)
memcpy(&finalCol[i * 4], &mcol[i * 4], sizeof(MCol) * 4);
else
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = 255;
finalCol[i * 4 + j].g = 255;
finalCol[i * 4 + j].r = 255;
}
}
else if (tface && set_draw_settings_cached(0, tface, ma, Gtexdraw)) {
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = 255;
finalCol[i * 4 + j].g = 0;
finalCol[i * 4 + j].r = 255;
}
}
else if (tface && (tface->mode & TF_OBCOL)) {
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = FTOCHAR(Gtexdraw.obcol[0]);
finalCol[i * 4 + j].g = FTOCHAR(Gtexdraw.obcol[1]);
finalCol[i * 4 + j].r = FTOCHAR(Gtexdraw.obcol[2]);
}
}
else if (!mcol) {
if (tface) {
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = 255;
finalCol[i * 4 + j].g = 255;
finalCol[i * 4 + j].r = 255;
}
}
else {
float col[3];
if (ma) {
if (Gtexdraw.color_profile) linearrgb_to_srgb_v3_v3(col, &ma->r);
else copy_v3_v3(col, &ma->r);
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = FTOCHAR(col[0]);
finalCol[i * 4 + j].g = FTOCHAR(col[1]);
finalCol[i * 4 + j].r = FTOCHAR(col[2]);
}
}
else
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].b = 255;
finalCol[i * 4 + j].g = 255;
finalCol[i * 4 + j].r = 255;
}
}
}
else {
for (j = 0; j < 4; j++) {
finalCol[i * 4 + j].r = mcol[i * 4 + j].r;
finalCol[i * 4 + j].g = mcol[i * 4 + j].g;
finalCol[i * 4 + j].b = mcol[i * 4 + j].b;
}
}
}
}
static DMDrawOption draw_tface_mapped__set_draw(void *userData, int index)
{
Mesh *me = (Mesh *)userData;
/* array checked for NULL before calling */
MPoly *mpoly = &me->mpoly[index];
BLI_assert(index >= 0 && index < me->totpoly);
if (mpoly->flag & ME_HIDE) {
return DM_DRAW_OPTION_SKIP;
}
else {
MTexPoly *tpoly = (me->mtpoly) ? &me->mtpoly[index] : NULL;
MTFace mtf = {{{0}}};
int matnr = mpoly->mat_nr;
if (tpoly) {
ME_MTEXFACE_CPY(&mtf, tpoly);
}
return draw_tface__set_draw(&mtf, (me->mloopcol != NULL), matnr);
}
}
static DMDrawOption draw_em_tf_mapped__set_draw(void *userData, int index)
{
drawEMTFMapped_userData *data = userData;
BMEditMesh *em = data->em;
BMFace *efa = EDBM_face_at_index(em, index);
if (efa == NULL || BM_elem_flag_test(efa, BM_ELEM_HIDDEN)) {
return DM_DRAW_OPTION_SKIP;
}
else {
MTFace mtf = {{{0}}};
int matnr = efa->mat_nr;
if (data->has_mtface) {
MTexPoly *tpoly = CustomData_bmesh_get(&em->bm->pdata, efa->head.data, CD_MTEXPOLY);
ME_MTEXFACE_CPY(&mtf, tpoly);
}
return draw_tface__set_draw_legacy(data->has_mtface ? &mtf : NULL,
data->has_mcol, matnr);
}
}
/* when face select is on, use face hidden flag */
static DMDrawOption wpaint__setSolidDrawOptions_facemask(void *userData, int index)
{
Mesh *me = (Mesh *)userData;
MPoly *mp = &me->mpoly[index];
if (mp->flag & ME_HIDE)
return DM_DRAW_OPTION_SKIP;
return DM_DRAW_OPTION_NORMAL;
}
static void draw_mesh_text(Scene *scene, Object *ob, int glsl)
{
Mesh *me = ob->data;
DerivedMesh *ddm;
MPoly *mp, *mface = me->mpoly;
MTexPoly *mtpoly = me->mtpoly;
MLoopUV *mloopuv = me->mloopuv;
MLoopUV *luv;
MLoopCol *mloopcol = me->mloopcol; /* why does mcol exist? */
MLoopCol *lcol;
bProperty *prop = BKE_bproperty_object_get(ob, "Text");
GPUVertexAttribs gattribs;
int a, totpoly = me->totpoly;
/* fake values to pass to GPU_render_text() */
MCol tmp_mcol[4] = {{0}};
MCol *tmp_mcol_pt = mloopcol ? tmp_mcol : NULL;
MTFace tmp_tf = {{{0}}};
/* don't draw without tfaces */
if (!mtpoly || !mloopuv)
return;
/* don't draw when editing */
if (ob->mode & OB_MODE_EDIT)
return;
else if (ob == OBACT)
if (paint_facesel_test(ob) || paint_vertsel_test(ob))
return;
ddm = mesh_get_derived_deform(scene, ob, CD_MASK_BAREMESH);
for (a = 0, mp = mface; a < totpoly; a++, mtpoly++, mp++) {
short matnr = mp->mat_nr;
int mf_smooth = mp->flag & ME_SMOOTH;
Material *mat = me->mat[matnr];
int mode = mat ? mat->game.flag : GEMAT_INVISIBLE;
if (!(mode & GEMAT_INVISIBLE) && (mode & GEMAT_TEXT) && mp->totloop >= 3) {
/* get the polygon as a tri/quad */
int mp_vi[4];
float v1[3], v2[3], v3[3], v4[3];
char string[MAX_PROPSTRING];
int characters, i, glattrib = -1, badtex = 0;
/* TEXFACE */
ME_MTEXFACE_CPY(&tmp_tf, mtpoly);
if (glsl) {
GPU_enable_material(matnr + 1, &gattribs);
for (i = 0; i < gattribs.totlayer; i++) {
if (gattribs.layer[i].type == CD_MTFACE) {
glattrib = gattribs.layer[i].glindex;
break;
}
}
}
else {
badtex = set_draw_settings_cached(0, &tmp_tf, mat, Gtexdraw);
if (badtex) {
continue;
}
}
mp_vi[0] = me->mloop[mp->loopstart + 0].v;
mp_vi[1] = me->mloop[mp->loopstart + 1].v;
mp_vi[2] = me->mloop[mp->loopstart + 2].v;
mp_vi[3] = (mp->totloop >= 4) ? me->mloop[mp->loopstart + 3].v : 0;
/* UV */
luv = &mloopuv[mp->loopstart];
copy_v2_v2(tmp_tf.uv[0], luv->uv); luv++;
copy_v2_v2(tmp_tf.uv[1], luv->uv); luv++;
copy_v2_v2(tmp_tf.uv[2], luv->uv); luv++;
if (mp->totloop >= 4) {
copy_v2_v2(tmp_tf.uv[3], luv->uv);
}
/* COLOR */
if (mloopcol) {
unsigned int totloop_clamp = min_ii(4, mp->totloop);
unsigned int j;
lcol = &mloopcol[mp->loopstart];
for (j = 0; j < totloop_clamp; j++, lcol++) {
MESH_MLOOPCOL_TO_MCOL(lcol, &tmp_mcol[j]);
}
}
/* LOCATION */
ddm->getVertCo(ddm, mp_vi[0], v1);
ddm->getVertCo(ddm, mp_vi[1], v2);
ddm->getVertCo(ddm, mp_vi[2], v3);
if (mp->totloop >= 4) {
ddm->getVertCo(ddm, mp_vi[3], v4);
}
/* The BM_FONT handling is in the gpu module, shared with the
* game engine, was duplicated previously */
BKE_bproperty_set_valstr(prop, string);
characters = strlen(string);
if (!BKE_image_has_ibuf(mtpoly->tpage, NULL))
characters = 0;
if (!mf_smooth) {
float nor[3];
normal_tri_v3(nor, v1, v2, v3);
glNormal3fv(nor);
}
GPU_render_text(&tmp_tf, mode, string, characters,
(unsigned int *)tmp_mcol_pt, v1, v2, v3, (mp->totloop >= 4 ? v4 : NULL), glattrib);
}
}
ddm->release(ddm);
}
static int compareDrawOptions(void *userData, int cur_index, int next_index)
{
drawTFace_userData *data = userData;
if (data->mf && data->mf[cur_index].mat_nr != data->mf[next_index].mat_nr)
return 0;
if (data->tf && data->tf[cur_index].tpage != data->tf[next_index].tpage)
return 0;
return 1;
}
static int compareDrawOptionsEm(void *userData, int cur_index, int next_index)
{
drawEMTFMapped_userData *data = userData;
if (data->mf && data->mf[cur_index].mat_nr != data->mf[next_index].mat_nr)
return 0;
if (data->tf && data->tf[cur_index].tpage != data->tf[next_index].tpage)
return 0;
return 1;
}
static void draw_mesh_textured_old(Scene *scene, View3D *v3d, RegionView3D *rv3d,
Object *ob, DerivedMesh *dm, const int draw_flags)
{
Mesh *me = ob->data;
/* correct for negative scale */
if (ob->transflag & OB_NEG_SCALE) glFrontFace(GL_CW);
else glFrontFace(GL_CCW);
/* draw the textured mesh */
draw_textured_begin(scene, v3d, rv3d, ob);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
if (ob->mode & OB_MODE_EDIT) {
drawEMTFMapped_userData data;
data.em = me->edit_btmesh;
data.has_mcol = CustomData_has_layer(&me->edit_btmesh->bm->ldata, CD_MLOOPCOL);
data.has_mtface = CustomData_has_layer(&me->edit_btmesh->bm->pdata, CD_MTEXPOLY);
data.mf = DM_get_tessface_data_layer(dm, CD_MFACE);
data.tf = DM_get_tessface_data_layer(dm, CD_MTFACE);
dm->drawMappedFacesTex(dm, draw_em_tf_mapped__set_draw, compareDrawOptionsEm, &data);
}
else if (draw_flags & DRAW_FACE_SELECT) {
if (ob->mode & OB_MODE_WEIGHT_PAINT)
dm->drawMappedFaces(dm, wpaint__setSolidDrawOptions_facemask, GPU_enable_material, NULL, me,
DM_DRAW_USE_COLORS | DM_DRAW_ALWAYS_SMOOTH);
else
dm->drawMappedFacesTex(dm, me->mpoly ? draw_tface_mapped__set_draw : NULL, NULL, me);
}
else {
if (GPU_buffer_legacy(dm)) {
if (draw_flags & DRAW_MODIFIERS_PREVIEW)
dm->drawFacesTex(dm, draw_mcol__set_draw_legacy, NULL, NULL);
else
dm->drawFacesTex(dm, draw_tface__set_draw_legacy, NULL, NULL);
}
else {
drawTFace_userData userData;
update_tface_color_layer(dm);
userData.mf = DM_get_tessface_data_layer(dm, CD_MFACE);
userData.tf = DM_get_tessface_data_layer(dm, CD_MTFACE);
dm->drawFacesTex(dm, draw_tface__set_draw, compareDrawOptions, &userData);
}
}
/* draw game engine text hack */
if (BKE_bproperty_object_get(ob, "Text"))
draw_mesh_text(scene, ob, 0);
draw_textured_end();
/* draw edges and selected faces over textured mesh */
if (!(ob == scene->obedit) && (draw_flags & DRAW_FACE_SELECT))
draw_mesh_face_select(rv3d, me, dm);
/* reset from negative scale correction */
glFrontFace(GL_CCW);
/* in editmode, the blend mode needs to be set in case it was ADD */
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
/************************** NEW SHADING NODES ********************************/
typedef struct TexMatCallback {
Scene *scene;
Object *ob;
Mesh *me;
DerivedMesh *dm;
} TexMatCallback;
static void tex_mat_set_material_cb(void *UNUSED(userData), int mat_nr, void *attribs)
{
/* all we have to do here is simply enable the GLSL material, but note
* that the GLSL code will give different result depending on the drawtype,
* in texture draw mode it will output the active texture node, in material
* draw mode it will show the full material. */
GPU_enable_material(mat_nr, attribs);
}
static void tex_mat_set_texture_cb(void *userData, int mat_nr, void *attribs)
{
/* texture draw mode without GLSL */
TexMatCallback *data = (TexMatCallback *)userData;
GPUVertexAttribs *gattribs = attribs;
Image *ima;
ImageUser *iuser;
bNode *node;
int texture_set = 0;
/* draw image texture if we find one */
if (ED_object_get_active_image(data->ob, mat_nr, &ima, &iuser, &node)) {
/* get openl texture */
int mipmap = 1;
int bindcode = (ima) ? GPU_verify_image(ima, iuser, 0, 0, mipmap, FALSE) : 0;
float zero[4] = {0.0f, 0.0f, 0.0f, 0.0f};
if (bindcode) {
NodeTexBase *texbase = node->storage;
/* disable existing material */
GPU_disable_material();
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, zero);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, zero);
glMateriali(GL_FRONT_AND_BACK, GL_SHININESS, 0);
/* bind texture */
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, ima->bindcode);
glColor3f(1.0f, 1.0f, 1.0f);
glMatrixMode(GL_TEXTURE);
glLoadMatrixf(texbase->tex_mapping.mat);
glMatrixMode(GL_MODELVIEW);
/* use active UV texture layer */
memset(gattribs, 0, sizeof(*gattribs));
gattribs->layer[0].type = CD_MTFACE;
gattribs->layer[0].name[0] = '\0';
gattribs->layer[0].gltexco = 1;
gattribs->totlayer = 1;
texture_set = 1;
}
}
if (!texture_set) {
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
/* disable texture */
glDisable(GL_TEXTURE_2D);
glDisable(GL_COLOR_MATERIAL);
/* draw single color */
GPU_enable_material(mat_nr, attribs);
}
}
static int tex_mat_set_face_mesh_cb(void *userData, int index)
{
/* faceselect mode face hiding */
TexMatCallback *data = (TexMatCallback *)userData;
Mesh *me = (Mesh *)data->me;
MPoly *mp = &me->mpoly[index];
return !(mp->flag & ME_HIDE);
}
static int tex_mat_set_face_editmesh_cb(void *userData, int index)
{
/* editmode face hiding */
TexMatCallback *data = (TexMatCallback *)userData;
Mesh *me = (Mesh *)data->me;
BMFace *efa = EDBM_face_at_index(me->edit_btmesh, index);
return !BM_elem_flag_test(efa, BM_ELEM_HIDDEN);
}
void draw_mesh_textured(Scene *scene, View3D *v3d, RegionView3D *rv3d,
Object *ob, DerivedMesh *dm, const int draw_flags)
{
if ((!BKE_scene_use_new_shading_nodes(scene)) || (draw_flags & DRAW_MODIFIERS_PREVIEW)) {
draw_mesh_textured_old(scene, v3d, rv3d, ob, dm, draw_flags);
return;
}
else if (ob->mode & (OB_MODE_VERTEX_PAINT | OB_MODE_WEIGHT_PAINT)) {
draw_mesh_paint(v3d, rv3d, ob, dm, draw_flags);
return;
}
/* set opengl state for negative scale & color */
if (ob->transflag & OB_NEG_SCALE) glFrontFace(GL_CW);
else glFrontFace(GL_CCW);
glEnable(GL_LIGHTING);
{
Mesh *me = ob->data;
TexMatCallback data = {scene, ob, me, dm};
int (*set_face_cb)(void *, int);
int glsl;
/* face hiding callback depending on mode */
if (ob == scene->obedit)
set_face_cb = tex_mat_set_face_editmesh_cb;
else if (draw_flags & DRAW_FACE_SELECT)
set_face_cb = tex_mat_set_face_mesh_cb;
else
set_face_cb = NULL;
/* test if we can use glsl */
glsl = (v3d->drawtype == OB_MATERIAL) && GPU_glsl_support();
GPU_begin_object_materials(v3d, rv3d, scene, ob, glsl, NULL);
if (glsl) {
/* draw glsl */
dm->drawMappedFacesMat(dm,
tex_mat_set_material_cb,
set_face_cb, &data);
}
else {
float zero[4] = {0.0f, 0.0f, 0.0f, 0.0f};
/* draw textured */
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, zero);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, zero);
glMateriali(GL_FRONT_AND_BACK, GL_SHININESS, 0);
dm->drawMappedFacesMat(dm,
tex_mat_set_texture_cb,
set_face_cb, &data);
}
GPU_end_object_materials();
}
/* reset opengl state */
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
glBindTexture(GL_TEXTURE_2D, 0);
glFrontFace(GL_CCW);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
/* faceselect mode drawing over textured mesh */
if (!(ob == scene->obedit) && (draw_flags & DRAW_FACE_SELECT))
draw_mesh_face_select(rv3d, ob->data, dm);
}
/* Vertex Paint and Weight Paint */
void draw_mesh_paint(View3D *v3d, RegionView3D *rv3d,
Object *ob, DerivedMesh *dm, const int draw_flags)
{
DMSetDrawOptions facemask = NULL;
Mesh *me = ob->data;
const short do_light = (v3d->drawtype >= OB_SOLID);
/* hide faces in face select mode */
if (draw_flags & DRAW_FACE_SELECT)
facemask = wpaint__setSolidDrawOptions_facemask;
if (ob->mode & OB_MODE_WEIGHT_PAINT) {
if (do_light) {
const float spec[4] = {0.47f, 0.47f, 0.47f, 0.47f};
/* enforce default material settings */
GPU_enable_material(0, NULL);
/* but set default spec */
glColorMaterial(GL_FRONT_AND_BACK, GL_SPECULAR);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, spec);
/* diffuse */
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
glEnable(GL_LIGHTING);
glEnable(GL_COLOR_MATERIAL);
}
dm->drawMappedFaces(dm, facemask, GPU_enable_material, NULL, me,
DM_DRAW_USE_COLORS | DM_DRAW_ALWAYS_SMOOTH);
if (do_light) {
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHTING);
GPU_disable_material();
}
}
else if (ob->mode & OB_MODE_VERTEX_PAINT) {
if (me->mloopcol) {
dm->drawMappedFaces(dm, facemask, GPU_enable_material, NULL, me,
DM_DRAW_USE_COLORS | DM_DRAW_ALWAYS_SMOOTH);
}
else {
glColor3f(1.0f, 1.0f, 1.0f);
dm->drawMappedFaces(dm, facemask, GPU_enable_material, NULL, me,
DM_DRAW_ALWAYS_SMOOTH);
}
}
/* draw face selection on top */
if (draw_flags & DRAW_FACE_SELECT) {
draw_mesh_face_select(rv3d, me, dm);
}
else if ((do_light == FALSE) || (ob->dtx & OB_DRAWWIRE)) {
/* weight paint in solid mode, special case. focus on making the weights clear
* rather than the shading, this is also forced in wire view */
bglPolygonOffset(rv3d->dist, 1.0);
glDepthMask(0); /* disable write in zbuffer, selected edge wires show better */
glEnable(GL_BLEND);
glColor4ub(255, 255, 255, 96);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xAAAA);
dm->drawEdges(dm, 1, 1);
bglPolygonOffset(rv3d->dist, 0.0);
glDepthMask(1);
glDisable(GL_LINE_STIPPLE);
glDisable(GL_BLEND);
}
}
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