libobs: Always clear render target filter
This fixes a bug where the previous contents of a filter's render target texture might become visible if using alpha.
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@@ -2048,8 +2048,14 @@ void obs_source_process_filter(obs_source_t *filter, gs_effect_t *effect,
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GS_ZS_NONE);
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if (gs_texrender_begin(filter->filter_texrender, cx, cy)) {
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struct vec4 clear_color;
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vec4_zero(&clear_color);
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gs_clear(GS_CLEAR_COLOR, &clear_color, 0.0f, 0);
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gs_ortho(0.0f, (float)cx, 0.0f, (float)cy, -100.0f, 100.0f);
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obs_source_video_render(target);
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gs_texrender_end(filter->filter_texrender);
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}
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