Fix alpha handling for blur; it needs to be on the working (rewritten-to) effect.

[movit] / resample_effect.h

diff --git a/resample_effect.h b/resample_effect.h
index 5867f25a60a8f041d404565b0c738aea0b8b7732..b38728f05fa423061bb9002ce2bfb261ff73c4ff 100644 (file)
--- a/resample_effect.h
+++ b/resample_effect.h
@@ -29,6 +29,7 @@ public:
        // down quite a lot.
        virtual bool needs_texture_bounce() const { return true; }
        virtual bool needs_srgb_primaries() const { return false; }
+       virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
 
        virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height);
 
@@ -70,9 +71,9 @@ public:
        }
        virtual bool changes_output_size() const { return true; }
 
-       virtual void get_output_size(unsigned *width, unsigned *height) const {
-               *width = this->output_width;
-               *height = this->output_height;
+       virtual void get_output_size(unsigned *width, unsigned *height, unsigned *virtual_width, unsigned *virtual_height) const {
+               *virtual_width = *width = this->output_width;
+               *virtual_height = *height = this->output_height;
        }
 
        void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);