X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect_chain.h;h=903018bc3ab87a60dd159e3ff13d8edcec0b3171;hp=59949491e668eba68ec21202f8779d7dd6967ab4;hb=9b0bd744d606d9d92bd955e0e575c73aa505073d;hpb=407d90be3e45ddb7f5a53c16728bfa791998cb72

diff --git a/effect_chain.h b/effect_chain.h
index 5994949..903018b 100644
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -99,6 +99,13 @@ struct Phase {
 	// Identifier used to create unique variables in GLSL.
 	// Unique per-phase to increase cacheability of compiled shaders.
 	std::map<Node *, std::string> effect_ids;
+
+	// The geometry needed to draw this quad, bound to the vertex array
+	// object. (Seemingly it's actually a win not to upload geometry every
+	// frame, even for something as small as a quad, due to fewer state
+	// changes.)
+	GLuint vao;
+	GLuint position_vbo, texcoord_vbo;
 };
 
 class EffectChain {
@@ -228,6 +235,13 @@ private:
 	// as the last effect. Also pushes all phases in order onto <phases>.
 	Phase *construct_phase(Node *output, std::map<Node *, Phase *> *completed_effects);
 
+	// Execute one phase, ie. set up all inputs, effects and outputs, and render the quad.
+	void execute_phase(Phase *phase, bool last_phase, std::map<Phase *, GLuint> *output_textures, std::set<Phase *> *generated_mipmaps);
+
+	// Set up the given sampler number for sampling from an RTT texture,
+	// and bind it to "tex_" plus the given GLSL variable.
+	void setup_rtt_sampler(GLuint glsl_program_num, int sampler_num, const std::string &effect_id, bool use_mipmaps);
+
 	// Output the current graph to the given file in a Graphviz-compatible format;
 	// only useful for debugging.
 	void output_dot(const char *filename);