Support compute shaders and compute operations

[libs/gl.git] / source / render / renderer.h

diff --git a/source/render/renderer.h b/source/render/renderer.h
index 99c8c5002b242da1d18c694d77996ff8ded0607c..3341d9aa061e038f3acb59c5515cc6f776c9d5d7 100644 (file)
--- a/source/render/renderer.h
+++ b/source/render/renderer.h
@@ -63,14 +63,25 @@ public:
        };
 
 private:
-       struct BoundTexture
+       struct SampledTexture
        {
-               Tag tag;
-               mutable int binding = -1;
                const Texture *texture = 0;
                const Sampler *sampler = 0;
                int level = -1;
+
+               SampledTexture() = default;
+               SampledTexture(const Texture *t, const Sampler *s, int l): texture(t), sampler(s), level(l) { }
+
+               bool operator==(const SampledTexture &o) const { return texture==o.texture && sampler==o.sampler && level==o.level; }
+       };
+
+       template<typename T>
+       struct BoundResource
+       {
+               Tag tag;
+               mutable int binding = -1;
                int replaced = -1;
+               T resource;
        };
 
        struct BoundProgramData
@@ -115,8 +126,9 @@ private:
        State *current_state = 0;
        ProgramData standard_shdata;
        std::vector<BoundProgramData> shdata_stack;
-       std::vector<BoundTexture> texture_stack;
+       std::vector<BoundResource<SampledTexture>> texture_stack;
        const Texture &placeholder_texture;
+       const Sampler &default_sampler;
        PipelineState *last_pipeline = 0;
        Commands commands;
 
@@ -185,10 +197,16 @@ public:
 
        void set_texture(Tag, const Texture *, const Sampler * = 0);
        void set_texture(Tag, const Texture *, int, const Sampler * = 0);
+       void set_storage_texture(Tag, const Texture *);
 
 private:
+       template<typename T>
+       static void set_resource(std::vector<BoundResource<T>> &, unsigned &, Tag, const T &);
+
        void flush_shader_data();
-       void flush_textures();
+
+       template<typename T>
+       static void flush_resources(std::vector<BoundResource<T>> &, unsigned &);
 
 public:
        void set_vertex_setup(const VertexSetup *);
@@ -213,6 +231,9 @@ public:
        /** Draws multiple instances of a batch of primitives.  A shader must be active. */
        void draw_instanced(const Batch &, unsigned);
 
+       /** Dispatches a compute operation. */
+       void dispatch(unsigned, unsigned = 1, unsigned = 1);
+
        /** Resolves multisample attachments from the active framebuffer into
        target. */
        void resolve_multisample(Framebuffer &target);