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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) 2008 Blender Foundation.
* All rights reserved.
*
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/render/render_opengl.c
* \ingroup edrend
*/
#include <math.h>
#include <string.h>
#include <stddef.h>
#include <GL/glew.h>
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_dlrbTree.h"
#include "BLI_utildefines.h"
#include "BLI_jitter.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_image.h"
#include "BKE_main.h"
#include "BKE_report.h"
#include "BKE_scene.h"
#include "BKE_writeavi.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "ED_image.h"
#include "RE_pipeline.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "GPU_extensions.h"
#include "wm_window.h"
#include "render_intern.h"
typedef struct OGLRender {
Main *bmain;
Render *re;
Scene *scene;
View3D *v3d;
RegionView3D *rv3d;
ARegion *ar;
ScrArea *prevsa;
ARegion *prevar;
short obcenter_dia_back; /* temp overwrite */
Image *ima;
ImageUser iuser;
GPUOffScreen *ofs;
int sizex, sizey;
int write_still;
ReportList *reports;
bMovieHandle *mh;
int cfrao, nfra;
wmTimer *timer; /* use to check if running modal or not (invoke'd or exec'd)*/
} OGLRender;
/* added because v3d is not always valid */
static unsigned int screen_opengl_layers(OGLRender *oglrender)
{
if(oglrender->v3d) {
return oglrender->scene->lay | oglrender->v3d->lay;
}
else {
return oglrender->scene->lay;
}
}
static void screen_opengl_render_apply(OGLRender *oglrender)
{
Scene *scene= oglrender->scene;
ARegion *ar= oglrender->ar;
View3D *v3d= oglrender->v3d;
RegionView3D *rv3d= oglrender->rv3d;
RenderResult *rr;
Object *camera= NULL;
ImBuf *ibuf;
void *lock;
float winmat[4][4];
int sizex= oglrender->sizex;
int sizey= oglrender->sizey;
const short view_context= (v3d != NULL);
rr= RE_AcquireResultRead(oglrender->re);
if(view_context) {
GPU_offscreen_bind(oglrender->ofs); /* bind */
/* render 3d view */
if(rv3d->persp==RV3D_CAMOB && v3d->camera) {
/*int is_ortho= scene->r.mode & R_ORTHO;*/
camera= v3d->camera;
RE_GetCameraWindow(oglrender->re, camera, scene->r.cfra, winmat);
}
else {
rctf viewplane;
float clipsta, clipend;
int is_ortho= ED_view3d_viewplane_get(v3d, rv3d, sizex, sizey, &viewplane, &clipsta, &clipend);
if(is_ortho) orthographic_m4(winmat, viewplane.xmin, viewplane.xmax, viewplane.ymin, viewplane.ymax, -clipend, clipend);
else perspective_m4(winmat, viewplane.xmin, viewplane.xmax, viewplane.ymin, viewplane.ymax, clipsta, clipend);
}
if((scene->r.mode & R_OSA) == 0) {
ED_view3d_draw_offscreen(scene, v3d, ar, sizex, sizey, NULL, winmat);
GPU_offscreen_read_pixels(oglrender->ofs, GL_FLOAT, rr->rectf);
}
else {
/* simple accumulation, less hassle then FSAA FBO's */
static float jit_ofs[32][2];
float winmat_jitter[4][4];
float *accum_buffer= MEM_mallocN(sizex * sizey * sizeof(float) * 4, "accum1");
float *accum_tmp= MEM_mallocN(sizex * sizey * sizeof(float) * 4, "accum2");
int j;
BLI_initjit(jit_ofs[0], scene->r.osa);
/* first sample buffer, also initializes 'rv3d->persmat' */
ED_view3d_draw_offscreen(scene, v3d, ar, sizex, sizey, NULL, winmat);
GPU_offscreen_read_pixels(oglrender->ofs, GL_FLOAT, accum_buffer);
/* skip the first sample */
for(j=1; j < scene->r.osa; j++) {
copy_m4_m4(winmat_jitter, winmat);
window_translate_m4(winmat_jitter, rv3d->persmat,
(jit_ofs[j][0] * 2.0f) / sizex,
(jit_ofs[j][1] * 2.0f) / sizey);
ED_view3d_draw_offscreen(scene, v3d, ar, sizex, sizey, NULL, winmat_jitter);
GPU_offscreen_read_pixels(oglrender->ofs, GL_FLOAT, accum_tmp);
add_vn_vn(accum_buffer, accum_tmp, sizex*sizey*sizeof(float));
}
mul_vn_vn_fl(rr->rectf, accum_buffer, sizex*sizey*sizeof(float), 1.0f / scene->r.osa);
MEM_freeN(accum_buffer);
MEM_freeN(accum_tmp);
}
GPU_offscreen_unbind(oglrender->ofs); /* unbind */
}
else {
/* shouldnt suddenly give errors mid-render but possible */
char err_out[256]= "unknown";
ImBuf *ibuf_view= ED_view3d_draw_offscreen_imbuf_simple(scene, scene->camera, oglrender->sizex, oglrender->sizey, IB_rectfloat, OB_SOLID, err_out);
camera= scene->camera;
if(ibuf_view) {
memcpy(rr->rectf, ibuf_view->rect_float, sizeof(float) * 4 * oglrender->sizex * oglrender->sizey);
IMB_freeImBuf(ibuf_view);
}
else {
fprintf(stderr, "screen_opengl_render_apply: failed to get buffer, %s\n", err_out);
}
}
/* rr->rectf is now filled with image data */
if((scene->r.stamp & R_STAMP_ALL) && (scene->r.stamp & R_STAMP_DRAW))
BKE_stamp_buf(scene, camera, NULL, rr->rectf, rr->rectx, rr->recty, 4);
/* note on color management:
*
* OpenGL renders into sRGB colors, but render buffers are expected to be
* linear if color management is enabled. So we convert to linear here, so
* the conversion back to bytes using the color management flag can make it
* sRGB again, and so that e.g. openexr saving also saves the correct linear
* float buffer. */
if(oglrender->scene->r.color_mgt_flag & R_COLOR_MANAGEMENT) {
int predivide= 0; /* no alpha */
IMB_buffer_float_from_float(rr->rectf, rr->rectf,
4, IB_PROFILE_LINEAR_RGB, IB_PROFILE_SRGB, predivide,
oglrender->sizex, oglrender->sizey, oglrender->sizex, oglrender->sizex);
}
RE_ReleaseResult(oglrender->re);
/* update byte from float buffer */
ibuf= BKE_image_acquire_ibuf(oglrender->ima, &oglrender->iuser, &lock);
if(ibuf) {
image_buffer_rect_update(scene, rr, ibuf, NULL);
if(oglrender->write_still) {
char name[FILE_MAX];
int ok;
if(scene->r.im_format.planes == R_IMF_CHAN_DEPTH_8) {
IMB_color_to_bw(ibuf);
}
BKE_makepicstring(name, scene->r.pic, oglrender->bmain->name, scene->r.cfra, scene->r.im_format.imtype, scene->r.scemode & R_EXTENSION, FALSE);
ok= BKE_write_ibuf_as(ibuf, name, &scene->r.im_format, TRUE); /* no need to stamp here */
if(ok) printf("OpenGL Render written to '%s'\n", name);
else printf("OpenGL Render failed to write '%s'\n", name);
}
}
BKE_image_release_ibuf(oglrender->ima, lock);
}
static int screen_opengl_render_init(bContext *C, wmOperator *op)
{
/* new render clears all callbacks */
Scene *scene= CTX_data_scene(C);
ScrArea *prevsa= CTX_wm_area(C);
ARegion *prevar= CTX_wm_region(C);
RenderResult *rr;
GPUOffScreen *ofs;
OGLRender *oglrender;
int sizex, sizey;
short is_view_context= RNA_boolean_get(op->ptr, "view_context");
const short is_animation= RNA_boolean_get(op->ptr, "animation");
const short is_write_still= RNA_boolean_get(op->ptr, "write_still");
char err_out[256]= "unknown";
if(G.background) {
BKE_report(op->reports, RPT_ERROR, "Can't use OpenGL render in background mode (no opengl context)");
return 0;
}
/* ensure we have a 3d view */
if(!ED_view3d_context_activate(C)) {
RNA_boolean_set(op->ptr, "view_context", FALSE);
is_view_context = 0;
}
/* only one render job at a time */
if(WM_jobs_test(CTX_wm_manager(C), scene))
return 0;
if(!is_view_context && scene->camera==NULL) {
BKE_report(op->reports, RPT_ERROR, "Scene has no camera");
return 0;
}
if(!is_animation && is_write_still && BKE_imtype_is_movie(scene->r.im_format.imtype)) {
BKE_report(op->reports, RPT_ERROR, "Can't write a single file with an animation format selected");
return 0;
}
/* stop all running jobs, currently previews frustrate Render */
WM_jobs_stop_all(CTX_wm_manager(C));
/* handle UI stuff */
WM_cursor_wait(1);
/* create offscreen buffer */
sizex= (scene->r.size*scene->r.xsch)/100;
sizey= (scene->r.size*scene->r.ysch)/100;
/* corrects render size with actual size, not every card supports non-power-of-two dimensions */
ofs= GPU_offscreen_create(sizex, sizey, err_out);
if(!ofs) {
BKE_reportf(op->reports, RPT_ERROR, "Failed to create OpenGL offscreen buffer, %s", err_out);
return 0;
}
/* allocate opengl render */
oglrender= MEM_callocN(sizeof(OGLRender), "OGLRender");
op->customdata= oglrender;
oglrender->ofs= ofs;
oglrender->sizex= sizex;
oglrender->sizey= sizey;
oglrender->bmain= CTX_data_main(C);
oglrender->scene= scene;
oglrender->write_still= is_write_still && !is_animation;
oglrender->obcenter_dia_back = U.obcenter_dia;
U.obcenter_dia = 0;
oglrender->prevsa= prevsa;
oglrender->prevar= prevar;
if(is_view_context) {
ED_view3d_context_user_region(C, &oglrender->v3d, &oglrender->ar); /* so quad view renders camera */
oglrender->rv3d= oglrender->ar->regiondata;
/* MUST be cleared on exit */
oglrender->scene->customdata_mask_modal = (ED_view3d_datamask(oglrender->scene, oglrender->v3d) |
ED_view3d_object_datamask(oglrender->scene) );
/* apply immediately incase we're rendering from a script,
* running notifiers again will overwrite */
oglrender->scene->customdata_mask |= oglrender->scene->customdata_mask_modal;
}
/* create render */
oglrender->re= RE_NewRender(scene->id.name);
/* create image and image user */
oglrender->ima= BKE_image_verify_viewer(IMA_TYPE_R_RESULT, "Render Result");
BKE_image_signal(oglrender->ima, NULL, IMA_SIGNAL_FREE);
BKE_image_backup_render(oglrender->scene, oglrender->ima);
oglrender->iuser.scene= scene;
oglrender->iuser.ok= 1;
/* create render result */
RE_InitState(oglrender->re, NULL, &scene->r, NULL, sizex, sizey, NULL);
rr= RE_AcquireResultWrite(oglrender->re);
if(rr->rectf==NULL)
rr->rectf= MEM_callocN(sizeof(float)*4*sizex*sizey, "screen_opengl_render_init rect");
RE_ReleaseResult(oglrender->re);
return 1;
}
static void screen_opengl_render_end(bContext *C, OGLRender *oglrender)
{
Main *bmain= CTX_data_main(C);
Scene *scene= oglrender->scene;
if(oglrender->mh) {
if(BKE_imtype_is_movie(scene->r.im_format.imtype))
oglrender->mh->end_movie();
}
if(oglrender->timer) { /* exec will not have a timer */
scene->r.cfra= oglrender->cfrao;
scene_update_for_newframe(bmain, scene, screen_opengl_layers(oglrender));
WM_event_remove_timer(CTX_wm_manager(C), CTX_wm_window(C), oglrender->timer);
}
WM_cursor_wait(0);
WM_event_add_notifier(C, NC_SCENE|ND_RENDER_RESULT, oglrender->scene);
U.obcenter_dia = oglrender->obcenter_dia_back;
GPU_offscreen_free(oglrender->ofs);
oglrender->scene->customdata_mask_modal= 0;
CTX_wm_area_set(C, oglrender->prevsa);
CTX_wm_region_set(C, oglrender->prevar);
MEM_freeN(oglrender);
}
static int screen_opengl_render_cancel(bContext *C, wmOperator *op)
{
screen_opengl_render_end(C, op->customdata);
return OPERATOR_CANCELLED;
}
/* share between invoke and exec */
static int screen_opengl_render_anim_initialize(bContext *C, wmOperator *op)
{
/* initialize animation */
OGLRender *oglrender;
Scene *scene;
oglrender= op->customdata;
scene= oglrender->scene;
oglrender->reports= op->reports;
oglrender->mh= BKE_get_movie_handle(scene->r.im_format.imtype);
if(BKE_imtype_is_movie(scene->r.im_format.imtype)) {
if(!oglrender->mh->start_movie(scene, &scene->r, oglrender->sizex, oglrender->sizey, oglrender->reports)) {
screen_opengl_render_end(C, oglrender);
return 0;
}
}
oglrender->cfrao= scene->r.cfra;
oglrender->nfra= PSFRA;
scene->r.cfra= PSFRA;
return 1;
}
static int screen_opengl_render_anim_step(bContext *C, wmOperator *op)
{
Main *bmain= CTX_data_main(C);
OGLRender *oglrender= op->customdata;
Scene *scene= oglrender->scene;
ImBuf *ibuf;
void *lock;
char name[FILE_MAX];
int ok= 0;
const short view_context= (oglrender->v3d != NULL);
Object *camera= NULL;
/* update animated image textures for gpu, etc,
* call before scene_update_for_newframe so modifiers with textuers dont lag 1 frame */
ED_image_update_frame(bmain, scene->r.cfra);
/* go to next frame */
while(CFRA<oglrender->nfra) {
unsigned int lay= screen_opengl_layers(oglrender);
if(lay & 0xFF000000)
lay &= 0xFF000000;
scene_update_for_newframe(bmain, scene, lay);
CFRA++;
}
scene_update_for_newframe(bmain, scene, screen_opengl_layers(oglrender));
if(view_context) {
if(oglrender->rv3d->persp==RV3D_CAMOB && oglrender->v3d->camera && oglrender->v3d->scenelock) {
/* since scene_update_for_newframe() is used rather
* then ED_update_for_newframe() the camera needs to be set */
if(scene_camera_switch_update(scene)) {
oglrender->v3d->camera= scene->camera;
}
camera= oglrender->v3d->camera;
}
}
else {
scene_camera_switch_update(scene);
camera= scene->camera;
}
/* render into offscreen buffer */
screen_opengl_render_apply(oglrender);
/* save to disk */
ibuf= BKE_image_acquire_ibuf(oglrender->ima, &oglrender->iuser, &lock);
if(ibuf) {
/* color -> greyscale */
/* editing directly would alter the render view */
if(scene->r.im_format.planes == R_IMF_PLANES_BW) {
ImBuf *ibuf_bw= IMB_dupImBuf(ibuf);
IMB_color_to_bw(ibuf_bw);
// IMB_freeImBuf(ibuf); /* owned by the image */
ibuf= ibuf_bw;
}
else {
/* this is lightweight & doesnt re-alloc the buffers, only do this
* to save the correct bit depth since the image is always RGBA */
ImBuf *ibuf_cpy= IMB_allocImBuf(ibuf->x, ibuf->y, scene->r.im_format.planes, 0);
ibuf_cpy->rect= ibuf->rect;
ibuf_cpy->rect_float= ibuf->rect_float;
ibuf_cpy->zbuf_float= ibuf->zbuf_float;
ibuf= ibuf_cpy;
}
if(BKE_imtype_is_movie(scene->r.im_format.imtype)) {
ok= oglrender->mh->append_movie(&scene->r, SFRA, CFRA, (int*)ibuf->rect,
oglrender->sizex, oglrender->sizey, oglrender->reports);
if(ok) {
printf("Append frame %d", scene->r.cfra);
BKE_reportf(op->reports, RPT_INFO, "Appended frame: %d", scene->r.cfra);
}
}
else {
BKE_makepicstring(name, scene->r.pic, oglrender->bmain->name, scene->r.cfra, scene->r.im_format.imtype, scene->r.scemode & R_EXTENSION, TRUE);
ok= BKE_write_ibuf_stamp(scene, camera, ibuf, name, &scene->r.im_format);
if(ok==0) {
printf("Write error: cannot save %s\n", name);
BKE_reportf(op->reports, RPT_ERROR, "Write error: cannot save %s", name);
}
else {
printf("Saved: %s", name);
BKE_reportf(op->reports, RPT_INFO, "Saved file: %s", name);
}
}
/* imbuf knows which rects are not part of ibuf */
IMB_freeImBuf(ibuf);
}
BKE_image_release_ibuf(oglrender->ima, lock);
/* movie stats prints have no line break */
printf("\n");
/* go to next frame */
oglrender->nfra += scene->r.frame_step;
scene->r.cfra++;
/* stop at the end or on error */
if(scene->r.cfra > PEFRA || !ok) {
screen_opengl_render_end(C, op->customdata);
return 0;
}
return 1;
}
static int screen_opengl_render_modal(bContext *C, wmOperator *op, wmEvent *event)
{
OGLRender *oglrender= op->customdata;
int anim= RNA_boolean_get(op->ptr, "animation");
int ret;
switch(event->type) {
case ESCKEY:
/* cancel */
screen_opengl_render_end(C, op->customdata);
return OPERATOR_FINISHED;
case TIMER:
/* render frame? */
if(oglrender->timer == event->customdata)
break;
default:
/* nothing to do */
return OPERATOR_RUNNING_MODAL;
}
/* run first because screen_opengl_render_anim_step can free oglrender */
WM_event_add_notifier(C, NC_SCENE|ND_RENDER_RESULT, oglrender->scene);
if(anim == 0) {
screen_opengl_render_apply(op->customdata);
screen_opengl_render_end(C, op->customdata);
return OPERATOR_FINISHED;
}
else
ret= screen_opengl_render_anim_step(C, op);
/* stop at the end or on error */
if(ret == 0) {
return OPERATOR_FINISHED;
}
return OPERATOR_RUNNING_MODAL;
}
static int screen_opengl_render_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
OGLRender *oglrender;
int anim= RNA_boolean_get(op->ptr, "animation");
if(!screen_opengl_render_init(C, op))
return OPERATOR_CANCELLED;
if(anim) {
if(!screen_opengl_render_anim_initialize(C, op))
return OPERATOR_CANCELLED;
}
oglrender= op->customdata;
render_view_open(C, event->x, event->y);
WM_event_add_modal_handler(C, op);
oglrender->timer= WM_event_add_timer(CTX_wm_manager(C), CTX_wm_window(C), TIMER, 0.01f);
return OPERATOR_RUNNING_MODAL;
}
/* executes blocking render */
static int screen_opengl_render_exec(bContext *C, wmOperator *op)
{
const short is_animation= RNA_boolean_get(op->ptr, "animation");
if(!screen_opengl_render_init(C, op))
return OPERATOR_CANCELLED;
if(!is_animation) { /* same as invoke */
/* render image */
screen_opengl_render_apply(op->customdata);
screen_opengl_render_end(C, op->customdata);
return OPERATOR_FINISHED;
}
else {
int ret= 1;
if(!screen_opengl_render_anim_initialize(C, op))
return OPERATOR_CANCELLED;
while(ret) {
ret= screen_opengl_render_anim_step(C, op);
}
}
// no redraw needed, we leave state as we entered it
// ED_update_for_newframe(C, 1);
WM_event_add_notifier(C, NC_SCENE|ND_RENDER_RESULT, CTX_data_scene(C));
return OPERATOR_FINISHED;
}
void RENDER_OT_opengl(wmOperatorType *ot)
{
/* identifiers */
ot->name= "OpenGL Render";
ot->description= "OpenGL render active viewport";
ot->idname= "RENDER_OT_opengl";
/* api callbacks */
ot->invoke= screen_opengl_render_invoke;
ot->exec= screen_opengl_render_exec; /* blocking */
ot->modal= screen_opengl_render_modal;
ot->cancel= screen_opengl_render_cancel;
ot->poll= ED_operator_screenactive;
RNA_def_boolean(ot->srna, "animation", 0, "Animation", "Render files from the animation range of this scene");
RNA_def_boolean(ot->srna, "write_still", 0, "Write Image", "Save rendered the image to the output path (used only when animation is disabled)");
RNA_def_boolean(ot->srna, "view_context", 1, "View Context", "Use the current 3D view for rendering, else use scene settings");
}
/* function for getting an opengl buffer from a View3D, used by sequencer */
// extern void *sequencer_view3d_cb;
|