void obs_source_process_filter(obs_source_t filter, effect_t effect,
uint32_t width, uint32_t height, enum gs_color_format format,
enum allow_direct_render allow_direct)
{
obs_source_t target, parent;
uint32_t target_flags, parent_flags;
int cx, cy;
bool use_matrix, expects_def, can_directly;
if (!filter) return;
target = obs_filter_gettarget(filter);
parent = obs_filter_getparent(filter);
target_flags = target->info.output_flags;
parent_flags = parent->info.output_flags;
cx = obs_source_getwidth(target);
cy = obs_source_getheight(target);
use_matrix = !!(target_flags & OBS_SOURCE_COLOR_MATRIX);
expects_def = !(parent_flags & OBS_SOURCE_CUSTOM_DRAW);
can_directly = allow_direct == ALLOW_DIRECT_RENDERING;
/* if the parent does not use any custom effects, and this is the last
* filter in the chain for the parent, then render the parent directly
* using the filter effect instead of rendering to texture to reduce
* the total number of passes */
if (can_directly && expects_def && target == parent) {
render_filter_bypass(target, effect, use_matrix);
return;
}
if (!filter->filter_texrender)
filter->filter_texrender = texrender_create(format,
GS_ZS_NONE);
if (texrender_begin(filter->filter_texrender, cx, cy)) {
gs_ortho(0.0f, (float)cx, 0.0f, (float)cy, -100.0f, 100.0f);
if (expects_def && parent == target)
obs_source_default_render(parent, use_matrix);
else
obs_source_video_render(target);
texrender_end(filter->filter_texrender);
}
/* --------------------------- */
render_filter_tex(texrender_gettexture(filter->filter_texrender),
effect, width, height, use_matrix);
}
static bool update_async_texrender(struct obs_source *source,
const struct source_frame *frame)
{
texture_t tex = source->async_texture;
texrender_t texrender = source->async_convert_texrender;
texrender_reset(texrender);
upload_raw_frame(tex, frame);
uint32_t cx = source->async_width;
uint32_t cy = source->async_height;
effect_t conv = obs->video.conversion_effect;
technique_t tech = effect_gettechnique(conv,
select_conversion_technique(frame->format));
if (!texrender_begin(texrender, cx, cy))
return false;
technique_begin(tech);
technique_beginpass(tech, 0);
effect_settexture(conv, effect_getparambyname(conv, "image"),
tex);
set_eparam(conv, "width", (float)cx);
set_eparam(conv, "height", (float)cy);
set_eparam(conv, "width_i", 1.0f / cx);
set_eparam(conv, "height_i", 1.0f / cy);
set_eparam(conv, "width_d2", cx * 0.5f);
set_eparam(conv, "height_d2", cy * 0.5f);
set_eparam(conv, "width_d2_i", 1.0f / (cx * 0.5f));
set_eparam(conv, "height_d2_i", 1.0f / (cy * 0.5f));
set_eparam(conv, "input_height", (float)cy);
gs_ortho(0.f, (float)cx, 0.f, (float)cy, -100.f, 100.f);
gs_draw_sprite(tex, 0, cx, cy);
technique_endpass(tech);
technique_end(tech);
texrender_end(texrender);
return true;
}
void obs_source_process_filter(obs_source_t filter, texrender_t texrender,
effect_t effect, uint32_t width, uint32_t height,
enum allow_direct_render allow_direct)
{
obs_source_t target = obs_filter_gettarget(filter);
obs_source_t parent = obs_filter_getparent(filter);
uint32_t target_flags = obs_source_get_output_flags(target);
uint32_t parent_flags = obs_source_get_output_flags(parent);
int cx = obs_source_getwidth(target);
int cy = obs_source_getheight(target);
bool yuv = (target_flags & SOURCE_YUV) != 0;
bool expects_def = (parent_flags & SOURCE_DEFAULT_EFFECT) != 0;
bool can_directly = allow_direct == ALLOW_DIRECT_RENDERING;
/* if the parent does not use any custom effects, and this is the last
* filter in the chain for the parent, then render the parent directly
* using the filter effect instead of rendering to texture to reduce
* the total number of passes */
if (can_directly && expects_def && target == parent) {
render_filter_bypass(target, effect, width, height, yuv);
return;
}
if (texrender_begin(texrender, cx, cy)) {
gs_ortho(0.0f, (float)cx, 0.0f, (float)cy, -100.0f, 100.0f);
if (expects_def && parent == target)
obs_source_default_render(parent, yuv);
else
obs_source_video_render(target);
texrender_end(texrender);
}
/* --------------------------- */
render_filter_tex(texrender_gettexture(texrender), effect,
width, height, yuv);
}
