// Identifier used to create unique variables in GLSL.
std::string effect_id;
+ // Logical size of the output of this effect, ie. the resolution
+ // you would get if you sampled it as a texture. If it is undefined
+ // (since the inputs differ in resolution), it will be 0x0.
+ // If both this and output_texture_{width,height} are set,
+ // they will be equal.
+ unsigned output_width, output_height;
+
// If output goes to RTT (otherwise, none of these are set).
- // The Phsae pointer is a but ugly; we should probably fix so
+ // The Phase pointer is a but ugly; we should probably fix so
// that Phase takes other phases as inputs, instead of Node.
GLuint output_texture;
unsigned output_texture_width, output_texture_height;
class EffectChain {
public:
- EffectChain(unsigned width, unsigned height);
+ EffectChain(float aspect_nom, float aspect_denom); // E.g., 16.0f, 9.0f for 16:9.
// User API:
// input, effects, output, finalize need to come in that specific order.
void insert_node_between(Node *sender, Node *middle, Node *receiver);
private:
+ // Fits a rectangle of the given size to the current aspect ratio
+ // (aspect_nom/aspect_denom) and returns the new width and height.
+ unsigned fit_rectangle_to_aspect(unsigned width, unsigned height);
+
+ // Compute the input sizes for all inputs for all effects in a given phase,
+ // and inform the effects about the results.
+ void inform_input_sizes(Phase *phase);
+
// 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 fix_internal_gamma_by_inserting_nodes(unsigned step);
void fix_output_gamma();
- unsigned width, height;
+ float aspect_nom, aspect_denom;
ImageFormat output_format;
std::vector<Node *> nodes;