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 1cbcdc60546b93f0cccc2db6ee5cb95a27107b39..3341d9aa061e038f3acb59c5515cc6f776c9d5d7 100644 (file)
--- a/source/render/renderer.h
+++ b/source/render/renderer.h
@@ -4,6 +4,7 @@
 #include <set>
 #include <vector>
 #include "commands.h"
+#include "cullface.h"
 #include "matrix.h"
 #include "programdata.h"
 #include "renderer_backend.h"
@@ -13,16 +14,20 @@ namespace Msp {
 namespace GL {
 
 class Batch;
+class Blend;
 class Buffer;
 class Camera;
 union ClearValue;
+class DepthTest;
 class Material;
 class Mesh;
 class Lighting;
 class Program;
 class QueryPool;
+struct Rect;
 class Renderable;
 class Sampler;
+class StencilTest;
 class Texture;
 class VertexSetup;
 
@@ -58,13 +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
@@ -77,6 +94,7 @@ private:
 
        struct State
        {
+               std::uintptr_t pipeline_key = 0;
                const Camera *camera = 0;
                Matrix model_matrix;
                const Framebuffer *framebuffer = 0;
@@ -96,7 +114,9 @@ private:
 
        enum ChangeMask
        {
+               PIPELINE_KEY = 1,
                MATRIX = 2,
+               CAMERA = 4,
                SHADER_DATA = 16
        };
 
@@ -106,9 +126,15 @@ 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;
 
+       static const Tag world_obj_matrix_tag;
+       static const Tag world_obj_normal_matrix_tag;
+
 public:
        Renderer();
 
@@ -133,6 +159,16 @@ private:
        State &get_state() const;
 
 public:
+       void set_pipeline_key(std::uintptr_t);
+       void set_pipeline_key(const void *p) { set_pipeline_key(reinterpret_cast<uintptr_t>(p)); }
+
+       template<typename T>
+       void set_pipeline_key(std::uintptr_t k, T d)
+       { set_pipeline_key(k^(static_cast<uintptr_t>(d)<<((sizeof(std::uintptr_t)-sizeof(T))*std::numeric_limits<char>::digits))); }
+
+       template<typename T>
+       void set_pipeline_key(const void *p, T d) { set_pipeline_key(reinterpret_cast<uintptr_t>(p), d); }
+
        /** Sets the camera to render from.  The model matrix is reset to identity. */
        void set_camera(const Camera &);
 
@@ -160,10 +196,17 @@ public:
        void add_shader_data(const ProgramData &data);
 
        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 *);
@@ -188,6 +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);
@@ -196,6 +242,8 @@ public:
        void end_query(const QueryPool &, unsigned);
 
 private:
+       PipelineState &get_pipeline_state();
+       void apply_framebuffer();
        void apply_state();
 };