Revision: 56874
          
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=56874
Author:   ton
Date:     2013-05-17 11:13:46 +0000 (Fri, 17 May 2013)
Log Message:
-----------
3D Viewport rendering (Blender Internal)

Added incremental re-render on view changes. That means all data preprocessing
only needs to be done once on view changes, quite faster that way.

Also fixed a bug in raytracing strands with soft shadows, was wrongly changing
coordinates in a static array.

Note: proper signals for re-renders is still on the todo. Many button options
don't signal a re-render yet. Work around: press G+ESC for quick full renders.

Modified Paths:
--------------
    trunk/blender/source/blender/editors/render/render_internal.c
    trunk/blender/source/blender/render/intern/include/envmap.h
    trunk/blender/source/blender/render/intern/include/rayintersection.h
    trunk/blender/source/blender/render/intern/include/renderdatabase.h
    trunk/blender/source/blender/render/intern/source/convertblender.c
    trunk/blender/source/blender/render/intern/source/envmap.c
    trunk/blender/source/blender/render/intern/source/rayshade.c

Modified: trunk/blender/source/blender/editors/render/render_internal.c
===================================================================
--- trunk/blender/source/blender/editors/render/render_internal.c       
2013-05-17 11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/editors/render/render_internal.c       
2013-05-17 11:13:46 UTC (rev 56874)
@@ -718,6 +718,8 @@
        Main *bmain;
        RenderEngine *engine;
        
+       float viewmat[4][4];
+       
        int keep_data;
 } RenderPreview;
 
@@ -828,7 +830,7 @@
        rp->stop = stop;
        rp->do_update = do_update;
 
-//     printf("Enter previewrender\n");
+       // printf("Enter previewrender\n");
        
        /* ok, are we rendering all over? */
        sprintf(name, "View3dPreview %p", (void *)rp->ar);
@@ -884,14 +886,14 @@
                        lay |= rp->v3d->lay;
                else lay = rp->v3d->lay;
                
-               RE_SetView(re, rp->rv3d->viewmat);
+               RE_SetView(re, rp->viewmat);
                
                RE_Database_FromScene(re, rp->bmain, rp->scene, lay, 0);        
        // 0= dont use camera view
-//             printf("dbase update\n");
+               // printf("dbase update\n");
        }
        else {
-//             printf("dbase rotate\n");
-               RE_DataBase_IncrementalView(re, rp->rv3d->viewmat, 0);
+               // printf("dbase rotate\n");
+               RE_DataBase_IncrementalView(re, rp->viewmat, 0);
                restore = 1;
        }
 
@@ -900,15 +902,13 @@
        /* OK, can we enter render code? */
        if (rstats->convertdone) {
                RE_TileProcessor(re);
-//             printf("tile processor\n");
                
+               /* always rotate back */
                if (restore)
-                       RE_DataBase_IncrementalView(re, rp->rv3d->viewmat, 1);
-               
+                       RE_DataBase_IncrementalView(re, rp->viewmat, 1);
+
                rp->engine->flag &= ~RE_ENGINE_DO_UPDATE;
        }
-
-//     printf("done\n\n");
 }
 
 static void render_view3d_free(void *customdata)
@@ -943,6 +943,7 @@
        rp->rv3d = CTX_wm_region_view3d(C);
        rp->bmain = CTX_data_main(C);
        rp->keep_data = keep_data;
+       copy_m4_m4(rp->viewmat, rp->rv3d->viewmat);
        
        /* dont alloc in threads */
        if (engine->text == NULL)
@@ -992,13 +993,9 @@
                if (engine->resolution_x != ar->winx || engine->resolution_y != 
ar->winy)
                        update |= PR_UPDATE_RENDERSIZE;
 
-               /* view updating fails on raytrace */
                RE_GetView(re, mat);
                if (compare_m4m4(mat, rv3d->viewmat, 0.00001f) == 0) {
-                       if ((scene->r.mode & R_RAYTRACE) == 0)
-                               update |= PR_UPDATE_VIEW;
-                       else
-                               engine->flag |= RE_ENGINE_DO_UPDATE;
+                       update |= PR_UPDATE_VIEW;
                }
                
                render_view3d_get_rects(ar, v3d, rv3d, &viewplane, engine, 
&clipsta, &clipend, &orth);
@@ -1013,8 +1010,8 @@
                
                if (update)
                        engine->flag |= RE_ENGINE_DO_UPDATE;
-//             if (update)
-//                     printf("changed ma %d res %d view %d\n", update & 
PR_UPDATE_MATERIAL, update & PR_UPDATE_RENDERSIZE, update & PR_UPDATE_VIEW);
+               //if (update)
+               //      printf("changed ma %d res %d view %d\n", update & 
PR_UPDATE_MATERIAL, update & PR_UPDATE_RENDERSIZE, update & PR_UPDATE_VIEW);
        }
        
        return update;

Modified: trunk/blender/source/blender/render/intern/include/envmap.h
===================================================================
--- trunk/blender/source/blender/render/intern/include/envmap.h 2013-05-17 
11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/include/envmap.h 2013-05-17 
11:13:46 UTC (rev 56874)
@@ -48,7 +48,7 @@
 
 void make_envmaps(struct Render *re);
 int envmaptex(struct Tex *tex, const float texvec[3], float dxt[3], float 
dyt[3], int osatex, struct TexResult *texres, struct ImagePool *pool);
-void env_rotate_scene(struct Render *re, float mat[4][4], int mode);
+void env_rotate_scene(struct Render *re, float mat[4][4], int do_rotate);
 
 #endif /* __ENVMAP_H__ */
 

Modified: trunk/blender/source/blender/render/intern/include/rayintersection.h
===================================================================
--- trunk/blender/source/blender/render/intern/include/rayintersection.h        
2013-05-17 11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/include/rayintersection.h        
2013-05-17 11:13:46 UTC (rev 56874)
@@ -64,6 +64,10 @@
        float dir[3];
        float dist;
 
+       /* for envmap and incremental view update renders */
+       float origstart[3];
+       float origdir[3];
+       
        /* precomputed values to accelerate bounding box intersection */
        int bv_index[6];
        float idot_axis[3];

Modified: trunk/blender/source/blender/render/intern/include/renderdatabase.h
===================================================================
--- trunk/blender/source/blender/render/intern/include/renderdatabase.h 
2013-05-17 11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/include/renderdatabase.h 
2013-05-17 11:13:46 UTC (rev 56874)
@@ -140,6 +140,9 @@
 
 void RE_set_customdata_names(struct ObjectRen *obr, struct CustomData *data);
 
+void area_lamp_vectors(struct LampRen *lar);
+
+
 /* haloren->type: flags */
 #define HA_ONLYSKY             1
 #define HA_VECT                        2

Modified: trunk/blender/source/blender/render/intern/source/convertblender.c
===================================================================
--- trunk/blender/source/blender/render/intern/source/convertblender.c  
2013-05-17 11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/source/convertblender.c  
2013-05-17 11:13:46 UTC (rev 56874)
@@ -3765,7 +3765,7 @@
        shb->compressthresh= lar->compressthresh;
 }
 
-static void area_lamp_vectors(LampRen *lar)
+void area_lamp_vectors(LampRen *lar)
 {
        float xsize= 0.5f*lar->area_size, ysize= 0.5f*lar->area_sizey, multifac;
 

Modified: trunk/blender/source/blender/render/intern/source/envmap.c
===================================================================
--- trunk/blender/source/blender/render/intern/source/envmap.c  2013-05-17 
11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/source/envmap.c  2013-05-17 
11:13:46 UTC (rev 56874)
@@ -45,6 +45,7 @@
 
 #include "DNA_group_types.h"
 #include "DNA_image_types.h"
+#include "DNA_lamp_types.h"
 #include "DNA_object_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_texture_types.h"
@@ -163,6 +164,7 @@
        /* view stuff in env render */
        viewscale = (env->type == ENV_PLANE) ? env->viewscale : 1.0f;
        RE_SetEnvmapCamera(envre, env->object, viewscale, env->clipsta, 
env->clipend);
+       copy_m4_m4(envre->viewmat_orig, re->viewmat_orig);
        
        /* callbacks */
        envre->display_draw = re->display_draw;
@@ -265,23 +267,27 @@
 
 /* ------------------------------------------------------------------------- */
 
-void env_rotate_scene(Render *re, float mat[4][4], int mode)
+void env_rotate_scene(Render *re, float mat[4][4], int do_rotate)
 {
        GroupObject *go;
        ObjectRen *obr;
        ObjectInstanceRen *obi;
        LampRen *lar = NULL;
        HaloRen *har = NULL;
-       float imat[3][3], pmat[4][4], smat[4][4], tmat[4][4], cmat[3][3], 
tmpmat[4][4];
+       float imat[3][3], mat_inverse[4][4], smat[4][4], tmat[4][4], 
cmat[3][3], tmpmat[4][4];
        int a;
        
-       if (mode == 0) {
+       if (do_rotate == 0) {
                invert_m4_m4(tmat, mat);
                copy_m3_m4(imat, tmat);
+               
+               copy_m4_m4(mat_inverse, mat);
        }
        else {
                copy_m4_m4(tmat, mat);
                copy_m3_m4(imat, mat);
+               
+               invert_m4_m4(mat_inverse, tmat);
        }
 
        for (obi = re->instancetable.first; obi; obi = obi->next) {
@@ -290,7 +296,7 @@
                        copy_m4_m4(tmpmat, obi->mat);
                        mult_m4_m4m4(obi->mat, tmat, tmpmat);
                }
-               else if (mode == 1)
+               else if (do_rotate == 1)
                        copy_m4_m4(obi->mat, tmat);
                else
                        unit_m4(obi->mat);
@@ -300,10 +306,12 @@
                transpose_m3(obi->nmat);
 
                /* indicate the renderer has to use transform matrices */
-               if (mode == 0)
+               if (do_rotate == 0)
                        obi->flag &= ~R_ENV_TRANSFORMED;
-               else
+               else {
                        obi->flag |= R_ENV_TRANSFORMED;
+                       copy_m4_m4(obi->imat, mat_inverse);
+               }
        }
        
 
@@ -319,32 +327,50 @@
        for (go = re->lights.first; go; go = go->next) {
                lar = go->lampren;
                
-               /* removed here some horrible code of someone in NaN who tried 
to fix
-                * prototypes... just solved by introducing a correct 
cmat[3][3] instead
-                * of using smat. this works, check square spots in reflections 
 (ton) */
-               copy_m3_m3(cmat, lar->imat); 
-               mul_m3_m3m3(lar->imat, cmat, imat); 
+               /* copy from add_render_lamp */
+               if (do_rotate == 1)
+                       mult_m4_m4m4(tmpmat, re->viewmat, go->ob->obmat);
+               else
+                       mult_m4_m4m4(tmpmat, re->viewmat_orig, go->ob->obmat);
+               invert_m4_m4(go->ob->imat, tmpmat);
+               
+               copy_m3_m4(lar->mat, tmpmat);
+               
+               copy_m3_m4(lar->imat, go->ob->imat);
 
-               mul_m3_v3(imat, lar->vec);
-               mul_m4_v3(tmat, lar->co);
+               lar->vec[0]= -tmpmat[2][0];
+               lar->vec[1]= -tmpmat[2][1];
+               lar->vec[2]= -tmpmat[2][2];
+               normalize_v3(lar->vec);
+               lar->co[0]= tmpmat[3][0];
+               lar->co[1]= tmpmat[3][1];
+               lar->co[2]= tmpmat[3][2];
 
-               lar->sh_invcampos[0] = -lar->co[0];
-               lar->sh_invcampos[1] = -lar->co[1];
-               lar->sh_invcampos[2] = -lar->co[2];
-               mul_m3_v3(lar->imat, lar->sh_invcampos);
-               lar->sh_invcampos[2] *= lar->sh_zfac;
+               if (lar->type == LA_AREA) {
+                       area_lamp_vectors(lar);
+               }
+               else if (lar->type == LA_SPOT) {
+                       normalize_v3(lar->imat[0]);
+                       normalize_v3(lar->imat[1]);
+                       normalize_v3(lar->imat[2]);
                
-               if (lar->shb) {
-                       if (mode == 1) {
-                               invert_m4_m4(pmat, mat);
-                               mult_m4_m4m4(smat, lar->shb->viewmat, pmat);
-                               mult_m4_m4m4(lar->shb->persmat, 
lar->shb->winmat, smat);
+                       lar->sh_invcampos[0] = -lar->co[0];
+                       lar->sh_invcampos[1] = -lar->co[1];
+                       lar->sh_invcampos[2] = -lar->co[2];
+                       mul_m3_v3(lar->imat, lar->sh_invcampos);
+                       lar->sh_invcampos[2] *= lar->sh_zfac;
+               
+                       if (lar->shb) {
+                               if (do_rotate == 1) {
+                                       mult_m4_m4m4(smat, lar->shb->viewmat, 
mat_inverse);
+                                       mult_m4_m4m4(lar->shb->persmat, 
lar->shb->winmat, smat);
+                               }
+                               else mult_m4_m4m4(lar->shb->persmat, 
lar->shb->winmat, lar->shb->viewmat);
                        }
-                       else mult_m4_m4m4(lar->shb->persmat, lar->shb->winmat, 
lar->shb->viewmat);
                }
        }
        
-       if (mode) {
+       if (do_rotate) {
                init_render_world(re);
                env_set_imats(re);
        }

Modified: trunk/blender/source/blender/render/intern/source/rayshade.c
===================================================================
--- trunk/blender/source/blender/render/intern/source/rayshade.c        
2013-05-17 11:08:50 UTC (rev 56873)
+++ trunk/blender/source/blender/render/intern/source/rayshade.c        
2013-05-17 11:13:46 UTC (rev 56874)
@@ -499,7 +499,37 @@
        
 }
 
+/* four functions to facilitate envmap rotation for raytrace */
+static void ray_env_rotate_start(Isect *is, float imat[4][4])
+{
+       copy_v3_v3(is->origstart, is->start);
+       mul_m4_v3(imat, is->start);
+}
 
+static void ray_env_rotate_dir(Isect *is, float imat[4][4])
+{
+       float end[3];
+       
+       copy_v3_v3(is->origdir, is->dir);
+       add_v3_v3v3(end, is->origstart, is->dir);
+       
+       mul_m4_v3(imat, end);
+       sub_v3_v3v3(is->dir, end, is->start);
+}
+

@@ Diff output truncated at 10240 characters. @@
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