[Graphics] Implement Meshes & Buffers (#273)

* mesh work

* make sure to track depth write info

* Update Mesh.hpp

* setDepthMode works

* clamp depth clear value

* SpriteBatchL use Buffers
TextBatch: use Buffers (WIP)

* fix bottom screen projection

* fix drawQuads

* minor changes

* ParticleSystem: use Buffer

* switch: attempt Buffers

* switch: depth writes

* cafe: attempt meshes

* cafe: more shader rework

* cafe: use GX2RBuffer for UniformBlock

* shader variables renamed, more fixes

* changes from LÖVE about batched drawing

* meshes work

Author: TurtleP

.gitignore

@@ -5,3 +5,7 @@ build
 *.3dsx
 *.nro
 *.wuhb
+.clangd
+
+.DS_Store
+__cmake_systeminformation

CMakeLists.txt

@@ -199,13 +199,15 @@ target_sources(${PROJECT_NAME} PRIVATE
     source/common/debug.cpp
     source/common/float.cpp
     source/common/luax.cpp
+    source/common/memory.cpp
     source/common/Matrix.cpp
     source/common/Message.cpp
     source/common/Module.cpp
     source/common/Object.cpp
     source/common/pixelformat.cpp
     source/common/Reference.cpp
     source/common/screen.cpp
+    source/common/delay.cpp
     source/common/Stream.cpp
     source/common/types.cpp
     source/common/Variant.cpp
@@ -255,6 +257,7 @@ target_sources(${PROJECT_NAME} PRIVATE
     source/modules/graphics/Buffer.cpp
     source/modules/graphics/Graphics.cpp
     source/modules/graphics/FontBase.cpp
+    source/modules/graphics/Mesh.cpp
     source/modules/graphics/ParticleSystem.cpp
     source/modules/graphics/Polyline.cpp
     source/modules/graphics/TextBatch.cpp
@@ -266,7 +269,9 @@ target_sources(${PROJECT_NAME} PRIVATE
     source/modules/graphics/Quad.cpp
     source/modules/graphics/Volatile.cpp
     source/modules/graphics/vertex.cpp
+    source/modules/graphics/wrap_Buffer.cpp
     source/modules/graphics/wrap_Graphics.cpp
+    source/modules/graphics/wrap_Mesh.cpp
     source/modules/graphics/wrap_ParticleSystem.cpp
     source/modules/graphics/wrap_Texture.cpp
     source/modules/graphics/wrap_TextBatch.cpp

include/common/Map.hpp

@@ -73,8 +73,8 @@ using EnumMap = Map<Key, Value, Size>;
 #define STRINGMAP_DECLARE(name, enum_t, ...)                                                                                                          \
     static inline constexpr auto name = StringMap { std::to_array<std::pair<std::string_view, enum_t>>({ __VA_ARGS__ }) };                            \
     static inline constexpr bool getConstant(const char* key, enum_t& out)        { return name.getValue(key, out); }                                 \
-    static inline constexpr bool getConstant(enum_t value, std::string_view& out) { return name.getKey(value, out); }                                 \
-    static inline constexpr const char* getConstant(enum_t value) { std::string_view out {}; return name.getKey(value, out) ? out.data() : nullptr; }
+    static inline constexpr bool getConstant(enum_t value, std::string_view& out) { return name.getKey(value, out); }
+
 
 #define ENUMMAP_DECLARE(name, enum_t_a, enum_t_b, ...)                                                             \
     static inline constexpr auto name = EnumMap { std::to_array<std::pair<enum_t_a, enum_t_b>>({ __VA_ARGS__ }) }; \

include/common/Matrix.hpp

@@ -87,6 +87,11 @@ namespace love
          **/
         const float* getElements() const;
 
+        /**
+         * Gets a pointer to the 9 array elements.
+         **/
+        float* getElements();
+
         void setRow(int r, const Vector4& v);
         Vector4 getRow(int r) const;
 
@@ -230,6 +235,11 @@ namespace love
          **/
         static Matrix4 ortho(float left, float right, float bottom, float top, float near, float far);
 
+        /**
+         * Creates a new orthographic projection matrix, tilted 90° CCW.
+         **/
+        static Matrix4 orthoTilt(float left, float right, float bottom, float top, float near, float far);
+
         /**
          * Creates a new perspective projection matrix.
          **/

include/common/Variant.hpp

@@ -1,7 +1,6 @@
 #pragma once
 
 #include "common/Object.hpp"
-#include "common/int.hpp"
 
 #include <cstring>
 #include <string>

include/common/debug.hpp

@@ -3,7 +3,6 @@
 #include <arpa/inet.h>
 #include <fcntl.h>
 #include <netinet/in.h>
-#include <signal.h>
 #include <sys/select.h>
 #include <sys/socket.h>
 #include <unistd.h>
@@ -69,11 +68,9 @@ namespace love
     // clang-format off
 #if defined(__DEBUG__)
     #include <cstdio>
-    #define LOG(format, ...)                                  \
-        do { std::printf("[C++] " format "\n", ##__VA_ARGS__); } while (0)
+    #define LOG(format, ...) do { std::printf("[C++] " format "\n", ##__VA_ARGS__); } while (0)
 #else
-    #define LOG(format, ...) \
-        do {} while (0)
+    #define LOG(format, ...) do {} while (0)
 #endif
     //clang-format on
 } // namespace love

include/common/delay.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace love
+{
+    static constexpr int NS_TO_MS = 1000000;
+    void sleep(double ms);
+} // namespace love

include/common/luax.hpp

@@ -132,6 +132,8 @@ namespace love
 
     std::string luax_checkstring(lua_State* L, int index);
 
+    int luax_checkint(lua_State* L, int index);
+
     int luax_checkintflag(lua_State* L, int tableIndex, const char* key);
 
     int luax_intflag(lua_State* L, int index, const char* name, int default_value);

include/common/pixelformat.hpp

@@ -273,6 +273,8 @@ namespace love
      **/
     int getPixelFormatColorComponents(PixelFormat format);
 
+    const char* getConstant(PixelFormat format);
+
     // clang-format off
     STRINGMAP_DECLARE(PixelFormats, PixelFormat,
         { "unknown", PIXELFORMAT_UNKNOWN },

include/common/screen.hpp

@@ -1,10 +1,9 @@
 #pragma once
 
+#include <algorithm>
 #include <span>
 #include <string_view>
 
-#include <algorithm>
-
 #include <stdint.h>
 
 namespace love
@@ -24,7 +23,7 @@ namespace love
     static constexpr inline Screen DEFAULT_SCREEN = (Screen)0;
     inline Screen currentScreen                   = DEFAULT_SCREEN;
 
-    std::span<ScreenInfo> getScreenInfo();
+    std::span<const ScreenInfo> getScreenInfo();
 
     const ScreenInfo& getScreenInfo(Screen id);