Add support for compute shaders.

[movit] / effect_chain.h

diff --git a/effect_chain.h b/effect_chain.h
index 6d9d062d747f4901c39e6b7681a6b4365c7d3939..c292b38b4a0b85642d8d5b7970117a5ae64b11c3 100644 (file)
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -178,11 +178,24 @@ struct Phase {
        std::vector<Node *> effects;  // In order.
        unsigned output_width, output_height, virtual_output_width, virtual_output_height;
 
+       // Whether this phase is compiled as a compute shader, ie., the last effect is
+       // marked as one.
+       bool is_compute_shader;
+
+       // If <is_compute_shader>, which image unit the output buffer is bound to.
+       // This is used as source for a Uniform<int> below.
+       int outbuf_image_unit;
+
+       // These are used in transforming from unnormalized to normalized coordinates
+       // in compute shaders.
+       Point2D inv_output_size, output_texcoord_adjust;
+
        // Identifier used to create unique variables in GLSL.
        // Unique per-phase to increase cacheability of compiled shaders.
        std::map<Node *, std::string> effect_ids;
 
        // Uniforms for this phase; combined from all the effects.
+       std::vector<Uniform<int> > uniforms_image2d;
        std::vector<Uniform<int> > uniforms_sampler2d;
        std::vector<Uniform<bool> > uniforms_bool;
        std::vector<Uniform<int> > uniforms_int;
@@ -499,6 +512,7 @@ private:
        void fix_output_gamma();
        void add_ycbcr_conversion_if_needed();
        void add_dither_if_needed();
+       void add_dummy_effect_if_needed();
 
        float aspect_nom, aspect_denom;
        ImageFormat output_format;