X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=effect_chain.h;h=593232cf01e036f47728ae1fd3d2c756bf6d3d85;hb=d88ed3150376693000665b9016c0350d5d90e9e1;hp=a1bf3cb80241167b6f0bda72bf1ea3e974ed98d3;hpb=ddf71f853e64c3912eed4ab98bfe7503826ce8e1;p=movit

diff --git a/effect_chain.h b/effect_chain.h
index a1bf3cb..593232c 100644
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -16,6 +16,10 @@
 // but if so, the threads' contexts need to be set up to share resources, since
 // the EffectChain holds textures and other OpenGL objects that are tied to the
 // context.
+//
+// Memory management (only relevant if you use multiple contexts):
+// See corresponding comment in resource_pool.h. This holds even if you don't
+// allocate your own ResourcePool, but let EffectChain hold its own.
 
 #include <epoxy/gl.h>
 #include <stdio.h>
@@ -99,13 +103,6 @@ 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 {
@@ -235,6 +232,13 @@ 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);