From 8d9b24b1b84107c90a77d94c86a810cc068fe073 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Wed, 19 Feb 2020 22:14:12 +0100
Subject: Fix rendering of texture with multiple frames

---
 include/RenderBackend/OpenGL/DeviceFrame.hpp   | 26 ------------------
 include/RenderBackend/OpenGL/DeviceMemory.hpp  | 37 +++++++++++---------------
 include/RenderBackend/OpenGL/ShaderFrame.hpp   | 35 ++++++++++++++++++++++++
 include/RenderBackend/OpenGL/ShaderProgram.hpp | 14 +++-------
 include/RenderBackend/OpenGL/Texture2D.hpp     |  3 +++
 include/RenderBackend/OpenGL/Uniform.hpp       |  2 +-
 6 files changed, 58 insertions(+), 59 deletions(-)
 delete mode 100644 include/RenderBackend/OpenGL/DeviceFrame.hpp
 create mode 100644 include/RenderBackend/OpenGL/ShaderFrame.hpp

(limited to 'include/RenderBackend')

diff --git a/include/RenderBackend/OpenGL/DeviceFrame.hpp b/include/RenderBackend/OpenGL/DeviceFrame.hpp
deleted file mode 100644
index 3fa7fe7..0000000
--- a/include/RenderBackend/OpenGL/DeviceFrame.hpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include "../../types.hpp"
-#include "../../utils.hpp"
-#include <vector>
-
-namespace amalgine
-{
-    class DeviceMemory;
-    class ShaderProgram;
-    
-    class DeviceFrame
-    {
-        DISABLE_COPY(DeviceFrame)
-    public:
-        DeviceFrame();
-        ~DeviceFrame();
-        
-        // The returned pointers cleaned when the frame is cleaned. Do not deallocate the returned pointer!
-        DeviceMemory* alloc();
-        void draw(ShaderProgram *shader);
-    private:
-        u32 vertexArrayObjectId;
-        std::vector<DeviceMemory*> buffers;
-    };
-}
diff --git a/include/RenderBackend/OpenGL/DeviceMemory.hpp b/include/RenderBackend/OpenGL/DeviceMemory.hpp
index 5f593fc..802230d 100644
--- a/include/RenderBackend/OpenGL/DeviceMemory.hpp
+++ b/include/RenderBackend/OpenGL/DeviceMemory.hpp
@@ -5,6 +5,8 @@
 #include "../../Triangle.hpp"
 #include "../../Vec.hpp"
 
+#include <memory>
+
 namespace amalgine {
     enum class DeviceMemoryType {
         NONE,
@@ -12,11 +14,10 @@ namespace amalgine {
         VEC3
     };
 
-    class DeviceMemory
-    {
+    class DeviceMemory {
         DISABLE_COPY(DeviceMemory)
-        friend class DeviceFrame;
-        friend class ShaderProgram;
+        friend class ShaderFrame;
+        friend class std::default_delete<DeviceMemory>;
     public:
         enum class StorageType
         {
@@ -30,26 +31,20 @@ namespace amalgine {
             STREAM
         };
         
-        enum class PrimitiveType
-        {
-            TRIANGLE
-        };
-        
-        //void copy(const DataView<f32> &data, StorageType storageType, PrimitiveType primitiveType = PrimitiveType::TRIANGLE);
-        void copy(const DataView<vec2f> &texture_coords, StorageType storageType);
-        void copy(const DataView<Triangle2D> &triangles, StorageType storageType);
-        void copy(const DataView<Triangle3D> &triangles, StorageType storageType);
-        void draw();
+        void set(const DataView<vec2f> &texture_coords, StorageType storageType);
+        void set(const DataView<Triangle2D> &triangles, StorageType storageType);
+        void set(const DataView<Triangle3D> &triangles, StorageType storageType);
 
-        DeviceMemoryType get_type() const { return type; }
+        i32 get_num_vertices() const { return num_vertices; }
     private:
-        DeviceMemory();
+        DeviceMemory(u32 vertex_array_object_id, i32 attrib_location);
         ~DeviceMemory();
-        void use() const;
+        void use();
     private:
-        u32 vertexBufferObjectId;
-        u32 primitiveType;
-        u32 numVertices;
-        DeviceMemoryType type;
+        u32 vertex_array_object_id;
+        u32 vertex_buffer_object_id;
+        i32 attrib_location;
+        i32 num_vertices;
+        DeviceMemoryType memory_type;
     };
 }
diff --git a/include/RenderBackend/OpenGL/ShaderFrame.hpp b/include/RenderBackend/OpenGL/ShaderFrame.hpp
new file mode 100644
index 0000000..da0918e
--- /dev/null
+++ b/include/RenderBackend/OpenGL/ShaderFrame.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include "../../Result.hpp"
+#include "../../types.hpp"
+#include "../../utils.hpp"
+#include "Uniform.hpp"
+#include "DeviceMemory.hpp"
+
+#include <map>
+#include <memory>
+#include <string>
+
+namespace amalgine {
+    class ShaderFrame {
+        DISABLE_COPY(ShaderFrame)
+        friend class ShaderProgram;
+    public:
+        ~ShaderFrame();
+        ShaderFrame(ShaderFrame &&other) = default;
+        ShaderFrame& operator=(ShaderFrame &&other) = default;
+
+        DeviceMemory* get_input_by_name(const char *name);
+        Result<Uniform> get_uniform_by_name(const char *name);
+
+        void draw();
+    private:
+        ShaderFrame(u32 shader_program_id);
+    private:
+        u32 shader_program_id;
+        u32 vertex_array_object_id;
+
+        // TODO: Use a const char* as a key instead
+        std::map<std::string, std::unique_ptr<DeviceMemory>> shader_inputs;
+    };
+}
diff --git a/include/RenderBackend/OpenGL/ShaderProgram.hpp b/include/RenderBackend/OpenGL/ShaderProgram.hpp
index 177e43c..a1db6a0 100644
--- a/include/RenderBackend/OpenGL/ShaderProgram.hpp
+++ b/include/RenderBackend/OpenGL/ShaderProgram.hpp
@@ -3,14 +3,10 @@
 #include "../../Result.hpp"
 #include "../../types.hpp"
 #include "../../utils.hpp"
-#include "../../Vec.hpp"
-#include "Uniform.hpp"
-#include "DeviceMemory.hpp"
+#include "ShaderFrame.hpp"
 
-#include <vector>
 #include <memory>
-#include <glm/gtc/matrix_transform.hpp>
-#include <glm/gtc/type_ptr.hpp>
+#include <vector>
 
 namespace amalgine {
     class Shader;
@@ -21,11 +17,7 @@ namespace amalgine {
     public:
         ~ShaderProgram();
         static Result<std::unique_ptr<ShaderProgram>> build(const std::vector<Shader*> &shaders);
-
-        Result<Uniform> get_uniform_by_name(const char *name);
-        int set_input_data(const char *name, const DeviceMemory &data);
-
-        void use();
+        ShaderFrame create_frame();
     private:
         ShaderProgram(u32 shader_program_id);
     private:
diff --git a/include/RenderBackend/OpenGL/Texture2D.hpp b/include/RenderBackend/OpenGL/Texture2D.hpp
index 48b613b..c0bfbd2 100644
--- a/include/RenderBackend/OpenGL/Texture2D.hpp
+++ b/include/RenderBackend/OpenGL/Texture2D.hpp
@@ -11,9 +11,12 @@ namespace amalgine
     {
         DISABLE_COPY(Texture2D)
     public:
+        Texture2D();
         // Not thread safe
         Texture2D(Image *image);
         ~Texture2D();
+        Texture2D(Texture2D &&other);
+        Texture2D& operator=(Texture2D &&other);
 
         i32 get_texture_id() const { return texture_id; }
     private:
diff --git a/include/RenderBackend/OpenGL/Uniform.hpp b/include/RenderBackend/OpenGL/Uniform.hpp
index dbffa03..d6e6e64 100644
--- a/include/RenderBackend/OpenGL/Uniform.hpp
+++ b/include/RenderBackend/OpenGL/Uniform.hpp
@@ -11,7 +11,7 @@
 namespace amalgine {
     class Uniform {
         DISABLE_COPY(Uniform)
-        friend class ShaderProgram;
+        friend class ShaderFrame;
         friend class Result<Uniform>;
     public:
         Uniform(Uniform&&) = default;
-- 
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