Support changing resolution in effects, and add a simple ResizeEffect that does that...

[movit] / effect_chain.h

diff --git a/effect_chain.h b/effect_chain.h
index 67955786c9e2efd9a3bfed69021f3d7d4efb05a2..dcfb7a13667759c502d9860f9aca456a5ce641d9 100644 (file)
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -67,8 +67,13 @@ private:
                bool input_needs_mipmaps;
                std::vector<Effect *> inputs;   // Only from other phases; input textures are not counted here.
                std::vector<Effect *> effects;  // In order.
+               unsigned output_width, output_height;
        };
 
+       // Determine the preferred output size of a given phase.
+       // Requires that all input phases (if any) already have output sizes set.
+       void find_output_size(Phase *phase);
+
        void find_all_nonlinear_inputs(Effect *effect,
                                       std::vector<Input *> *nonlinear_inputs,
                                       std::vector<Effect *> *intermediates);
@@ -78,7 +83,7 @@ private:
        void draw_vertex(float x, float y, const std::vector<Effect *> &inputs);
 
        // Create a GLSL program computing the given effects in order.
-       Phase compile_glsl_program(const std::vector<Effect *> &inputs, const std::vector<Effect *> &effects);
+       Phase *compile_glsl_program(const std::vector<Effect *> &inputs, const std::vector<Effect *> &effects);
 
        // Create all GLSL programs needed to compute the given effect, and all outputs
        // that depends on it (whenever possible).
@@ -90,11 +95,16 @@ private:
        std::vector<Input *> inputs;  // Also contained in effects.
        std::map<Effect *, std::string> effect_ids;
        std::map<Effect *, GLuint> effect_output_textures;
+       std::map<Effect *, std::pair<GLuint, GLuint> > effect_output_texture_sizes;
        std::map<Effect *, std::vector<Effect *> > outgoing_links;
        std::map<Effect *, std::vector<Effect *> > incoming_links;
 
        GLuint fbo;
-       std::vector<Phase> phases;
+       std::vector<Phase *> phases;
+
+       // This is a bit ugly; we should probably fix so that Phase takes other phases
+       // as inputs, instead of Effect.
+       std::map<Effect *, Phase *> output_effects_to_phase;
 
        GLenum format, bytes_per_pixel;
        bool finalized;