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Allow for a more modular renderer backends (#990)

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* Draft GPU3D renderer modularization

* Update sources C++ standard to C++17

The top-level `CMakeLists.txt` is already using the C++17 standard.

* Move GLCompositor into class type

Some other misc fixes to push towards better modularity

* Make renderer-implementation types move-only

These types are going to be holding onto handles
of GPU-side resources and shouldn't ever be copied around.

* Fix OSX: Remove 'register' storage class specifier

`register` has been removed in C++17...
But this keyword hasn't done anything in years anyways.

OSX builds consider this "warning" an error and it
stops the whole build.

* Add RestartFrame to Renderer3D interface

* Move Accelerated property to Renderer3D interface

There are points in the code base where we do:
`renderer != 0` to know if we are feeding
an openGL renderer. Rather than that we can instead just have this be
a property of the renderer itself.
With this pattern a renderer can just say how it wants its data to come
in rather than have everyone know that they're talking to an OpenGL
renderer.

* Remove Accelerated flag from GPU

* Move 2D_Soft interface in separate header

Also make the current 2D engine an "owned" unique_ptr.

* Update alignment attribute to standard alignas

Uses standardized `alignas` rather than compiler-specific
attributes.

https://en.cppreference.com/w/cpp/language/alignas

* Fix Clang: alignas specifier

Alignment must be specified before the array to align the entire array.

https://en.cppreference.com/w/cpp/language/alignas

* Converted Renderer3D Accelerated to variable

This flag is checked a lot during scanline rasterization. So rather
than having an expensive vtable-lookup call during mainline rendering
code, it is now a public constant bool type that is written to only once
during Renderer3D initialization.
This commit is contained in:
Wunk
2021-02-09 14:38:51 -08:00
committed by GitHub
parent 891427c75c
commit a7029aebae
16 changed files with 1039 additions and 836 deletions
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32
src/GPU.h
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@ -19,9 +19,15 @@
#ifndef GPU_H
#define GPU_H
#include <memory>
#include "GPU2D.h"
#include "NonStupidBitfield.h"
#ifdef OGLRENDERER_ENABLED
#include "GPU_OpenGL.h"
#endif
namespace GPU
{
@ -69,8 +75,8 @@ extern u8* VRAMPtr_BOBJ[0x8];
extern int FrontBuffer;
extern u32* Framebuffer[2][2];
extern GPU2D* GPU2D_A;
extern GPU2D* GPU2D_B;
extern std::unique_ptr<GPU2D> GPU2D_A;
extern std::unique_ptr<GPU2D> GPU2D_B;
extern int Renderer;
@ -149,6 +155,10 @@ void SyncDirtyFlags();
extern u32 OAMDirty;
extern u32 PaletteDirty;
#ifdef OGLRENDERER_ENABLED
extern std::unique_ptr<GLCompositor> CurGLCompositor;
#endif
struct RenderSettings
{
bool Soft_Threaded;
@ -550,24 +560,6 @@ void DisplayFIFO(u32 x);
void SetDispStat(u32 cpu, u16 val);
void SetVCount(u16 val);
#ifdef OGLRENDERER_ENABLED
namespace GLCompositor
{
bool Init();
void DeInit();
void Reset();
void SetRenderSettings(RenderSettings& settings);
void Stop();
void RenderFrame();
void BindOutputTexture(int buf);
}
#endif
}
#include "GPU3D.h"