void group_cache_del(GroupCache *cache)
{
drawable_del(cache->drawable);
if (cache->txh.data) gf_free(cache->txh.data);
gf_sc_texture_release(&cache->txh);
gf_sc_texture_destroy(&cache->txh);
gf_free(cache);
}
GF_EXPORT
void gf_sc_texture_destroy(GF_TextureHandler *txh)
{
GF_Compositor *compositor = txh->compositor;
Bool lock = gf_mx_try_lock(compositor->mx);
gf_sc_texture_release(txh);
if (txh->is_open) gf_sc_texture_stop(txh);
gf_list_del_item(txh->compositor->textures, txh);
if (lock) gf_mx_v(compositor->mx);
}
GF_EXPORT
GF_Err gf_sc_texture_open(GF_TextureHandler *txh, MFURL *url, Bool lock_scene_timeline)
{
if (txh->is_open) return GF_BAD_PARAM;
/*if existing texture in cache destroy it - we don't destroy it on stop to handle MovieTexture*/
if (txh->tx_io) gf_sc_texture_release(txh);
/*get media object*/
txh->stream = gf_mo_register(txh->owner, url, lock_scene_timeline, 0);
/*bad/Empty URL*/
if (!txh->stream) return GF_NOT_SUPPORTED;
return GF_OK;
}
GF_EXPORT
GF_Err gf_sc_texture_play_from_to(GF_TextureHandler *txh, MFURL *url, Double start_offset, Double end_offset, Bool can_loop, Bool lock_scene_timeline)
{
if (txh->is_open) return GF_BAD_PARAM;
/*if existing texture in cache destroy it - we don't destroy it on stop to handle MovieTexture*/
if (txh->tx_io) gf_sc_texture_release(txh);
/*get media object*/
txh->stream = gf_mo_register(txh->owner, url, lock_scene_timeline, 0);
/*bad/Empty URL*/
if (!txh->stream) return GF_NOT_SUPPORTED;
/*request play*/
gf_mo_play(txh->stream, start_offset, end_offset, can_loop);
txh->last_frame_time = (u32) (-1);
//gf_sc_invalidate(txh->compositor, NULL);
txh->is_open = 1;
return GF_OK;
}
static void svg_traverse_filter(GF_Node *node, void *rs, Bool is_destroy)
{
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
GF_FilterStack *st = gf_node_get_private(node);
if (is_destroy) {
drawable_del(st->drawable);
if (st->data) gf_free(st->data);
st->txh.data = NULL;
gf_sc_texture_release(&st->txh);
gf_sc_texture_destroy(&st->txh);
gf_free(st);
return;
}
if (tr_state->traversing_mode==TRAVERSE_DRAW_2D) {
if (! tr_state->visual->DrawBitmap(tr_state->visual, tr_state, tr_state->ctx, NULL)) {
visual_2d_texture_path(tr_state->visual, st->drawable->path, tr_state->ctx, tr_state);
}
}
}
static void composite_update(GF_TextureHandler *txh)
{
s32 w, h;
GF_STENCIL stencil;
M_Background2D *back;
GF_TraverseState *tr_state;
Bool invalidate_all;
u32 new_pixel_format;
GF_Compositor *compositor = (GF_Compositor *)txh->compositor;
CompositeTextureStack *st = (CompositeTextureStack *) gf_node_get_private(txh->owner);
GF_Raster2D *raster = st->visual->compositor->rasterizer;
if (st->unsupported) return;
/*
if (compositor->recompute_ar) {
gf_node_dirty_set(txh->owner, 0, 0);
return;
}
*/
if (!compositor->rebuild_offscreen_textures && (!compositor->text_edit_changed || !st->visual->has_text_edit ) && !gf_node_dirty_get(txh->owner)) {
txh->needs_refresh = 0;
return;
}
gf_node_dirty_clear(st->txh.owner, 0);
new_pixel_format = 0;
back = gf_list_get(st->visual->back_stack, 0);
if (back && back->isBound) new_pixel_format = GF_PIXEL_RGB_24;
else new_pixel_format = GF_PIXEL_RGBA;
#ifdef GPAC_USE_TINYGL
/*TinyGL pixel format is fixed at compile time, we cannot override it !*/
if (st->visual->type_3d) new_pixel_format = GF_PIXEL_RGBA;
#else
#ifndef GPAC_DISABLE_3D
/*no alpha support in offscreen rendering*/
if ( (st->visual->type_3d) && !(compositor->video_out->hw_caps & GF_VIDEO_HW_OPENGL_OFFSCREEN_ALPHA))
new_pixel_format = GF_PIXEL_RGB_24;
#endif
/*in OpenGL_ES, only RGBA can be safelly used with glReadPixels*/
#ifdef GPAC_USE_OGL_ES
new_pixel_format = GF_PIXEL_RGBA;
#endif
#endif
/*FIXME - we assume RGB+Depth+bitshape, we should check with the video out module*/
#if defined(GF_SR_USE_DEPTH) && !defined(GPAC_DISABLE_3D)
if (st->visual->type_3d && (compositor->video_out->hw_caps & GF_VIDEO_HW_HAS_DEPTH) ) new_pixel_format = GF_PIXEL_RGBDS;
#endif
#ifndef GPAC_DISABLE_3D
if (st->visual->type_3d>1) {
w = ((M_CompositeTexture3D*)txh->owner)->pixelWidth;
h = ((M_CompositeTexture3D*)txh->owner)->pixelHeight;
} else
#endif
{
w = ((M_CompositeTexture2D*)txh->owner)->pixelWidth;
h = ((M_CompositeTexture2D*)txh->owner)->pixelHeight;
}
/*internal GPAC hacks for testing color spaces*/
if (w<-1) {
w = -w;
if (h<0) {
h = -h;
if (new_pixel_format==GF_PIXEL_RGBA) {
new_pixel_format=GF_PIXEL_ARGB;
} else {
new_pixel_format=GF_PIXEL_BGR_24;
}
} else {
if (new_pixel_format==GF_PIXEL_RGB_24) {
new_pixel_format=GF_PIXEL_RGB_32;
}
}
}
else if (h<-1) {
h = -h;
if (new_pixel_format==GF_PIXEL_RGB_24) {
new_pixel_format=GF_PIXEL_RGB_32;
}
}
if (w<0) w = 0;
if (h<0) h = 0;
if (!w || !h) {
if (txh->tx_io) {
#ifdef GPAC_USE_TINYGL
if (st->tgl_ctx) ostgl_delete_context(st->tgl_ctx);
#endif
gf_sc_texture_release(txh);
if (txh->data) gf_free(txh->data);
txh->data = NULL;
txh->width = txh->height = txh->stride = 0;
}
return;
}
invalidate_all = compositor->rebuild_offscreen_textures;
/*rebuild stencil*/
if (!txh->tx_io
|| (w != (s32) txh->width) || ( h != (s32) txh->height)
|| (new_pixel_format != txh->pixelformat)
) {
Bool needs_stencil = 1;
if (txh->tx_io) {
#ifdef GPAC_USE_TINYGL
if (st->tgl_ctx) ostgl_delete_context(st->tgl_ctx);
#endif
gf_sc_texture_release(txh);
if (txh->data)
gf_free(txh->data);
txh->data = NULL;
}
/*we don't use rect ext because of no support for texture transforms*/
if (1
#ifndef GPAC_DISABLE_3D
|| compositor->gl_caps.npot_texture
#endif
) {
st->txh.width = w;
st->txh.height = h;
st->sx = st->sy = FIX_ONE;
} else {
st->txh.width = 2;
while (st->txh.width<(u32)w) st->txh.width*=2;
st->txh.height = 2;
while (st->txh.height<(u32)h) st->txh.height*=2;
st->sx = INT2FIX(st->txh.width) / w;
st->sy = INT2FIX(st->txh.height) / h;
}
gf_sc_texture_allocate(txh);
txh->pixelformat = new_pixel_format;
switch (new_pixel_format) {
case GF_PIXEL_RGBA:
case GF_PIXEL_ARGB:
txh->stride = txh->width * 4;
txh->transparent = 1;
break;
case GF_PIXEL_RGB_565:
txh->stride = txh->width * 2;
txh->transparent = 0;
break;
case GF_PIXEL_RGBDS:
txh->stride = txh->width * 4;
txh->transparent = 1;
break;
case GF_PIXEL_RGB_24:
txh->stride = txh->width * 3;
txh->transparent = 0;
break;
}
st->visual->width = txh->width;
st->visual->height = txh->height;
stencil = raster->stencil_new(raster, GF_STENCIL_TEXTURE);
/*TODO - add support for compositeTexture3D when root is 2D visual*/
#ifndef GPAC_DISABLE_3D
if (st->visual->type_3d) {
GF_Compositor *compositor = st->visual->compositor;
/*figure out what to do if main visual (eg video out) is not in OpenGL ...*/
if (!compositor->visual->type_3d) {
/*create an offscreen window for OpenGL rendering*/
if ((compositor->offscreen_width < st->txh.width) || (compositor->offscreen_height < st->txh.height)) {
#ifndef GPAC_USE_TINYGL
GF_Err e;
GF_Event evt;
compositor->offscreen_width = MAX(compositor->offscreen_width, st->txh.width);
compositor->offscreen_height = MAX(compositor->offscreen_height, st->txh.height);
evt.type = GF_EVENT_VIDEO_SETUP;
evt.setup.width = compositor->offscreen_width;
evt.setup.height = compositor->offscreen_height;
evt.setup.back_buffer = 0;
evt.setup.opengl_mode = 2;
e = compositor->video_out->ProcessEvent(compositor->video_out, &evt);
if (e) {
gf_sc_texture_release(txh);
st->unsupported = 1;
return;
}
/*reload openGL ext*/
gf_sc_load_opengl_extensions(compositor, 1);
#endif
}
} else {
needs_stencil = 0;
}
}
#endif
if (needs_stencil) {
txh->data = (char*)gf_malloc(sizeof(unsigned char) * txh->stride * txh->height);
memset(txh->data, 0, sizeof(unsigned char) * txh->stride * txh->height);
/*set stencil texture - we don't check error as an image could not be supported by the rasterizer
but still supported by the blitter (case of RGBD/RGBDS)*/
raster->stencil_set_texture(stencil, txh->data, txh->width, txh->height, txh->stride, txh->pixelformat, txh->pixelformat, 0);
#ifdef GPAC_USE_TINYGL
if (st->visual->type_3d && !compositor->visual->type_3d) {
st->tgl_ctx = ostgl_create_context(txh->width, txh->height, txh->transparent ? 32 : 24, &txh->data, 1);
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[CompositeTexture] Creating TinyGL Offscreen context %p (%d %d - pf %s)\n", st->tgl_ctx, txh->width, txh->width, gf_4cc_to_str(txh->pixelformat)));
}
#endif
}
invalidate_all = 1;
gf_sc_texture_set_stencil(txh, stencil);
}
if (!txh->tx_io) return;
stencil = gf_sc_texture_get_stencil(txh);
if (!stencil) return;
#ifdef GPAC_USE_TINYGL
if (st->tgl_ctx) ostgl_make_current(st->tgl_ctx, 0);
#endif
GF_SAFEALLOC(tr_state, GF_TraverseState);
tr_state->vrml_sensors = gf_list_new();
tr_state->visual = st->visual;
tr_state->invalidate_all = invalidate_all;
tr_state->immediate_draw = st->visual->compositor->traverse_state->immediate_draw;
gf_mx2d_init(tr_state->transform);
gf_cmx_init(&tr_state->color_mat);
tr_state->backgrounds = st->visual->back_stack;
tr_state->viewpoints = st->visual->view_stack;
tr_state->pixel_metrics = gf_sg_use_pixel_metrics(gf_node_get_graph(st->txh.owner));
tr_state->min_hsize = INT2FIX( MIN(txh->width, txh->height) ) / 2;
tr_state->vp_size.x = INT2FIX(txh->width);
tr_state->vp_size.y = INT2FIX(txh->height);
composite_do_bindable(st->txh.owner, tr_state, st->first);
st->first = 0;
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[CompositeTexture] Entering draw cycle\n"));
txh->needs_refresh = visual_draw_frame(st->visual, st->txh.owner, tr_state, 0);
txh->transparent = (st->visual->last_had_back==2) ? 0 : 1;
if (!compositor->edited_text && st->visual->has_text_edit)
st->visual->has_text_edit = 0;
/*set active viewport in image coordinates top-left=(0, 0), not in BIFS*/
if (0 && gf_list_count(st->visual->view_stack)) {
M_Viewport *vp = (M_Viewport *)gf_list_get(st->visual->view_stack, 0);
if (vp->isBound) {
SFVec2f size = vp->size;
if (size.x >=0 && size.y>=0) {
/*FIXME - we need tracking of VP changes*/
txh->needs_refresh = 1;
}
}
}
if (txh->needs_refresh) {
#ifndef GPAC_DISABLE_3D
if (st->visual->camera.is_3D) {
if (st->visual->compositor->visual->type_3d) {
#ifndef GPAC_USE_TINYGL
gf_sc_copy_to_texture(&st->txh);
#else
/*in TinyGL we only need to push associated bitmap to the texture*/
gf_sc_texture_push_image(&st->txh, 0, 0);
#endif
} else {
#ifndef GPAC_USE_TINYGL
gf_sc_copy_to_stencil(&st->txh);
#else
if (txh->pixelformat==GF_PIXEL_RGBDS) gf_get_tinygl_depth(&st->txh);
#endif
}
} else
#endif
{
if (raster->stencil_texture_modified) raster->stencil_texture_modified(stencil);
gf_sc_texture_set_stencil(txh, stencil);
}
gf_sc_invalidate(st->txh.compositor, NULL);
}
gf_list_del(tr_state->vrml_sensors);
gf_free(tr_state);
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[CompositeTexture] Leaving draw cycle\n"));
}
GF_EXPORT
void gf_sc_texture_update_frame(GF_TextureHandler *txh, Bool disable_resync)
{
Bool needs_reload = 0;
u32 size, ts;
s32 ms_until_pres, ms_until_next;
/*already refreshed*/
if (txh->needs_refresh) return;
if (!txh->stream) {
txh->data = NULL;
return;
}
/*should never happen!!*/
if (txh->needs_release) gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
/*check init flag*/
if (!(gf_mo_get_flags(txh->stream) & GF_MO_IS_INIT)) {
needs_reload = 1;
txh->data = NULL;
if (txh->tx_io) {
gf_sc_texture_release(txh);
}
}
txh->data = gf_mo_fetch_data(txh->stream, !disable_resync, &txh->stream_finished, &ts, &size, &ms_until_pres, &ms_until_next);
if (!(gf_mo_get_flags(txh->stream) & GF_MO_IS_INIT)) {
needs_reload = 1;
} else if (size && txh->size && (size != txh->size)) {
needs_reload = 1;
}
if (needs_reload) {
/*if we had a texture this means the object has changed - delete texture and resetup. Do not skip
texture update as this may lead to an empty rendering pass (blank frame for this object), especially in DASH*/
if (txh->tx_io) {
gf_sc_texture_release(txh);
txh->needs_refresh = 1;
}
if (gf_mo_is_private_media(txh->stream)) {
setup_texture_object(txh, 1);
gf_node_dirty_set(txh->owner, 0, 0);
}
}
/*if no frame or muted don't draw*/
if (!txh->data || !size) {
GF_LOG(GF_LOG_INFO, GF_LOG_CODEC, ("|Visual Texture] No output frame available \n"));
/*TODO - check if this is needed */
if (txh->flags & GF_SR_TEXTURE_PRIVATE_MEDIA) {
//txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
return;
}
/*if setup and same frame return*/
if (txh->tx_io && (txh->stream_finished || (txh->last_frame_time==ts)) ) {
gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
txh->needs_release = 0;
if (!txh->stream_finished) {
if (ms_until_next>0 && (txh->compositor->next_frame_delay > (u32) ms_until_next))
txh->compositor->next_frame_delay = ms_until_next;
}
return;
}
txh->needs_release = 1;
txh->last_frame_time = ts;
txh->size = size;
if (txh->raw_memory) {
gf_mo_get_raw_image_planes(txh->stream, (u8 **) &txh->data, (u8 **) &txh->pU, (u8 **) &txh->pV);
}
if (gf_mo_is_muted(txh->stream)) return;
if (txh->nb_frames) {
s32 push_delay = txh->upload_time / txh->nb_frames;
if (push_delay > ms_until_pres) ms_until_pres = 0;
else ms_until_pres -= push_delay;
}
if (txh->compositor->frame_delay < ms_until_pres)
txh->compositor->frame_delay = ms_until_pres;
txh->compositor->next_frame_delay = 1;
if (!txh->tx_io) {
setup_texture_object(txh, 0);
}
/*try to push texture on graphics but don't complain if failure*/
gf_sc_texture_set_data(txh);
txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
GF_EXPORT
void gf_sc_texture_update_frame(GF_TextureHandler *txh, Bool disable_resync)
{
u32 size, ts;
/*already refreshed*/
if (txh->needs_refresh) return;
if (!txh->stream) {
txh->data = NULL;
return;
}
/*should never happen!!*/
if (txh->needs_release) gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
/*check init flag*/
if (!(gf_mo_get_flags(txh->stream) & GF_MO_IS_INIT)) {
/*if we had a texture this means the object has changed - delete texture and force next frame
composition (this will take care of OD reuse)*/
if (txh->tx_io) {
gf_sc_texture_release(txh);
txh->data = NULL;
txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
return;
}
if (gf_mo_is_private_media(txh->stream)) {
setup_texture_object(txh, 1);
gf_node_dirty_set(txh->owner, 0, 0);
}
}
txh->data = gf_mo_fetch_data(txh->stream, !disable_resync, &txh->stream_finished, &ts, &size);
/*if no frame or muted don't draw*/
if (!txh->data || !size) {
/*TODO - check if this is needed */
if (txh->flags & GF_SR_TEXTURE_PRIVATE_MEDIA) {
//txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
return;
}
/*if setup and same frame return*/
if (txh->tx_io && (txh->stream_finished || (txh->last_frame_time==ts)) ) {
gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
txh->needs_release = 0;
return;
}
txh->needs_release = 1;
txh->last_frame_time = ts;
if (gf_mo_is_muted(txh->stream)) return;
if (!txh->tx_io) {
setup_texture_object(txh, 0);
}
/*try to push texture on graphics but don't complain if failure*/
gf_sc_texture_set_data(txh);
txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
GF_EXPORT
void gf_sc_texture_update_frame(GF_TextureHandler *txh, Bool disable_resync)
{
u32 size, ts;
/*already refreshed*/
if (txh->needs_refresh) return;
if (!txh->stream) {
txh->data = NULL;
return;
}
/*should never happen!!*/
if (txh->needs_release) gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
/*check init flag*/
if (!(gf_mo_get_flags(txh->stream) & GF_MO_IS_INIT)) {
/*if we had a texture this means the object has changed - delete texture and resetup. Do not skip
texture update as this may lead to an empty rendering pass (blank frame for this object), especially in DASH*/
if (txh->tx_io) {
gf_sc_texture_release(txh);
txh->data = NULL;
txh->needs_refresh = 1;
}
if (gf_mo_is_private_media(txh->stream)) {
setup_texture_object(txh, 1);
gf_node_dirty_set(txh->owner, 0, 0);
}
}
txh->data = gf_mo_fetch_data(txh->stream, !disable_resync, &txh->stream_finished, &ts, &size);
/*if no frame or muted don't draw*/
if (!txh->data || !size) {
GF_LOG(GF_LOG_INFO, GF_LOG_CODEC, ("No output frame available\n"));
/*TODO - check if this is needed */
if (txh->flags & GF_SR_TEXTURE_PRIVATE_MEDIA) {
//txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
return;
}
/*if setup and same frame return*/
if (txh->tx_io && (txh->stream_finished || (txh->last_frame_time==ts)) ) {
gf_mo_release_data(txh->stream, 0xFFFFFFFF, 0);
txh->needs_release = 0;
return;
}
txh->needs_release = 1;
txh->last_frame_time = ts;
if (gf_mo_is_muted(txh->stream)) return;
if (!txh->tx_io) {
setup_texture_object(txh, 0);
}
/*try to push texture on graphics but don't complain if failure*/
gf_sc_texture_set_data(txh);
txh->needs_refresh = 1;
gf_sc_invalidate(txh->compositor, NULL);
}
u32 layer3d_setup_offscreen(GF_Node *node, Layer3DStack *st, GF_TraverseState *tr_state, Fixed width, Fixed height)
{
GF_STENCIL stencil;
u32 new_pixel_format, w, h;
GF_Compositor *compositor = (GF_Compositor *)st->visual->compositor;
if (st->unsupported) return 0;
#ifndef GPAC_USE_TINYGL
/*no support for offscreen rendering*/
if (!(compositor->video_out->hw_caps & GF_VIDEO_HW_OPENGL_OFFSCREEN)) {
st->unsupported = 1;
return 0;
}
#endif
/*
if (tr_state->visual->compositor->recompute_ar) {
gf_node_dirty_set(node, 0, 0);
return 0;
}
*/
new_pixel_format = GF_PIXEL_RGBA;
#ifndef GPAC_USE_TINYGL
// if (!compositor_background_transparent(gf_list_get(tr_state->backgrounds, 0)) )
// new_pixel_format = GF_PIXEL_RGB_24;
/*in OpenGL_ES, only RGBA can be safelly used with glReadPixels*/
#ifdef GPAC_USE_OGL_ES
new_pixel_format = GF_PIXEL_RGBA;
#else
/*no support for alpha in offscreen rendering*/
if (!(compositor->video_out->hw_caps & GF_VIDEO_HW_OPENGL_OFFSCREEN_ALPHA))
new_pixel_format = GF_PIXEL_RGB_24;
#endif
#endif
/*FIXME - we assume RGB+Depth+bitshape, we should check with the video out module*/
#if defined(GF_SR_USE_DEPTH) && !defined(GPAC_DISABLE_3D)
if (st->visual->type_3d && (compositor->video_out->hw_caps & GF_VIDEO_HW_HAS_DEPTH) ) new_pixel_format = GF_PIXEL_RGBDS;
#endif
w = (u32) FIX2INT(gf_ceil(width));
h = (u32) FIX2INT(gf_ceil(height));
/*1- some implementation of glReadPixel crash if w||h are not multiple of 4*/
/*2- some implementation of glReadPixel don't behave properly here when texture is not a power of 2*/
w = gf_get_next_pow2(w);
if (w>1024) w = 1024;
h = gf_get_next_pow2(h);
if (h>1024) h = 1024;
if (!w || !h) return 0;
if (st->txh.tx_io
&& (new_pixel_format == st->txh.pixelformat)
&& (w == st->txh.width)
&& (h == st->txh.height)
&& (compositor->offscreen_width >= w)
&& (compositor->offscreen_height >= h)
)
return 2;
if (st->txh.tx_io) {
#ifdef GPAC_USE_TINYGL
if (st->tgl_ctx) ostgl_delete_context(st->tgl_ctx);
#endif
gf_sc_texture_release(&st->txh);
if (st->txh.data) gf_free(st->txh.data);
st->txh.data = NULL;
}
st->vp = gf_rect_center(INT2FIX(w), INT2FIX(h) );
st->txh.width = w;
st->txh.height = h;
gf_sc_texture_allocate(&st->txh);
st->txh.pixelformat = new_pixel_format;
if (new_pixel_format==GF_PIXEL_RGBA) {
st->txh.stride = w * 4;
st->txh.transparent = 1;
}
else if (new_pixel_format==GF_PIXEL_RGBDS) {
st->txh.stride = w * 4;
st->txh.transparent = 1;
}
else {
st->txh.stride = w * 3;
st->txh.transparent = 0;
}
st->visual->width = w;
st->visual->height = h;
stencil = compositor->rasterizer->stencil_new(compositor->rasterizer, GF_STENCIL_TEXTURE);
#ifndef GPAC_USE_TINYGL
/*create an offscreen window for OpenGL rendering*/
if ((compositor->offscreen_width < w) || (compositor->offscreen_height < h)) {
GF_Err e;
GF_Event evt;
compositor->offscreen_width = MAX(compositor->offscreen_width, w);
compositor->offscreen_height = MAX(compositor->offscreen_height, h);
evt.type = GF_EVENT_VIDEO_SETUP;
evt.setup.width = tr_state->visual->compositor->offscreen_width;
evt.setup.height = tr_state->visual->compositor->offscreen_height;
evt.setup.back_buffer = 0;
evt.setup.opengl_mode = 2;
e = compositor->video_out->ProcessEvent(compositor->video_out, &evt);
if (e) {
gf_sc_texture_release(&st->txh);
st->unsupported = 1;
return 0;
}
/*reload openGL ext*/
gf_sc_load_opengl_extensions(compositor, 1);
}
#endif
st->txh.data = (char*)gf_malloc(sizeof(unsigned char) * st->txh.stride * st->txh.height);
memset(st->txh.data, 0, sizeof(unsigned char) * st->txh.stride * st->txh.height);
/*set stencil texture - we don't check error as an image could not be supported by the rasterizer
but still supported by the blitter (case of RGBD/RGBDS)*/
compositor->rasterizer->stencil_set_texture(stencil, st->txh.data, st->txh.width, st->txh.height, st->txh.stride, st->txh.pixelformat, st->txh.pixelformat, 0);
#ifdef GPAC_USE_TINYGL
/*create TinyGL offscreen context*/
st->tgl_ctx = ostgl_create_context(st->txh.width, st->txh.height, st->txh.transparent ? 32 : 24, &st->txh.data, 1);
st->scale_x = st->scale_y = FIX_ONE;
#else
st->scale_x = INT2FIX(w) / tr_state->visual->compositor->offscreen_width;
st->scale_y = INT2FIX(h) / tr_state->visual->compositor->offscreen_height;
#endif
gf_sc_texture_set_stencil(&st->txh, stencil);
drawable_reset_path(st->drawable);
gf_path_add_rect_center(st->drawable->path, 0, 0, st->clip.width, st->clip.height);
return 1;
}