static inline void render_item(struct obs_scene_item *item)
{
if (item->crop_render) {
uint32_t width = obs_source_get_width(item->source);
uint32_t height = obs_source_get_height(item->source);
uint32_t cx = calc_cx(item, width);
uint32_t cy = calc_cy(item, height);
if (cx && cy && gs_texrender_begin(item->crop_render, cx, cy)) {
float cx_scale = (float)width / (float)cx;
float cy_scale = (float)height / (float)cy;
gs_matrix_scale3f(cx_scale, cy_scale, 1.0f);
gs_matrix_translate3f(
-(float)item->crop.left,
-(float)item->crop.top,
0.0f);
obs_source_video_render(item->source);
gs_texrender_end(item->crop_render);
}
}
gs_matrix_push();
gs_matrix_mul(&item->draw_transform);
if (item->crop_render) {
gs_texture_t *tex = gs_texrender_get_texture(item->crop_render);
while (gs_effect_loop(obs->video.default_effect, "Draw"))
obs_source_draw(tex, 0, 0, 0, 0, 0);
} else {
obs_source_video_render(item->source);
}
gs_matrix_pop();
}
static void duplicator_capture_render(void *data, gs_effect_t *effect)
{
struct duplicator_capture *capture = data;
gs_texture_t *texture;
int rot;
if (!capture->duplicator)
return;
texture = gs_duplicator_get_texture(capture->duplicator);
if (!texture)
return;
effect = obs_get_base_effect(OBS_EFFECT_OPAQUE);
rot = capture->rot;
while (gs_effect_loop(effect, "Draw")) {
if (rot != 0) {
float x = 0.0f;
float y = 0.0f;
switch (rot) {
case 90:
x = (float)capture->height;
break;
case 180:
x = (float)capture->width;
y = (float)capture->height;
break;
case 270:
y = (float)capture->width;
break;
}
gs_matrix_push();
gs_matrix_translate3f(x, y, 0.0f);
gs_matrix_rotaa4f(0.0f, 0.0f, 1.0f, RAD((float)rot));
}
obs_source_draw(texture, 0, 0, 0, 0, false);
if (rot != 0)
gs_matrix_pop();
}
if (capture->capture_cursor) {
effect = obs_get_base_effect(OBS_EFFECT_DEFAULT);
while (gs_effect_loop(effect, "Draw")) {
draw_cursor(capture);
}
}
}
static void render_item_texture(struct obs_scene_item *item)
{
gs_texture_t *tex = gs_texrender_get_texture(item->item_render);
gs_effect_t *effect = obs->video.default_effect;
enum obs_scale_type type = item->scale_filter;
uint32_t cx = gs_texture_get_width(tex);
uint32_t cy = gs_texture_get_height(tex);
if (type != OBS_SCALE_DISABLE) {
if (type == OBS_SCALE_POINT) {
gs_eparam_t *image = gs_effect_get_param_by_name(
effect, "image");
gs_effect_set_next_sampler(image,
obs->video.point_sampler);
} else if (!close_float(item->output_scale.x, 1.0f, EPSILON) ||
!close_float(item->output_scale.y, 1.0f, EPSILON)) {
gs_eparam_t *scale_param;
if (item->output_scale.x < 0.5f ||
item->output_scale.y < 0.5f) {
effect = obs->video.bilinear_lowres_effect;
} else if (type == OBS_SCALE_BICUBIC) {
effect = obs->video.bicubic_effect;
} else if (type == OBS_SCALE_LANCZOS) {
effect = obs->video.lanczos_effect;
}
scale_param = gs_effect_get_param_by_name(effect,
"base_dimension_i");
if (scale_param) {
struct vec2 base_res_i = {
1.0f / (float)cx,
1.0f / (float)cy
};
gs_effect_set_vec2(scale_param, &base_res_i);
}
}
}
while (gs_effect_loop(effect, "Draw"))
obs_source_draw(tex, 0, 0, 0, 0, 0);
}
