Compute shader renderer (melonDS-emu#2041)

* nothing works yet

* don't double buffer 3D framebuffers for the GL Renderer
looks like leftovers from when 3D+2D composition was done in the frontend

* oops

* it works!

* implement display capture for compute renderer
it's actually just all stolen from the regular OpenGL renderer

* fix bad indirect call

* handle cleanup properly

* add hires rendering to the compute shader renderer

* fix UB
also misc changes to use more unsigned multiplication
also fix framebuffer resize

* correct edge filling behaviour when AA is disabled

* fix full color textures

* fix edge marking (polygon id is 6-bit not 5)
also make the code a bit nicer

* take all edge cases into account for XMin/XMax calculation

* use hires coordinate again

* stop using fixed size buffers based on scale factor in shaders
this makes shader compile times tolerable on Wintel
- beginning of the shader cache
- increase size of tile idx in workdesc to 20 bits

* apparently & is not defined on bvec4
why does this even compile on Intel and Nvidia?

* put the texture cache into it's own file

* add compute shader renderer properly to the GUI
also add option to toggle using high resolution vertex coordinates

* unbind sampler object in compute shader renderer

* fix GetRangedBitMask for 64 bit aligned 64 bits
pretty embarassing

* convert NonStupidBitfield.h back to LF only new lines

* actually adapt to latest changes

* fix stupid merge

* actually make compute shader renderer work with newest changes

* show progress on shader compilation

* remove merge leftover

src/CMakeLists.txt

@@ -35,6 +35,8 @@ add_library(core STATIC
     GPU2D_Soft.cpp
     GPU3D.cpp
     GPU3D_Soft.cpp
+    GPU3D_Texcache.cpp
+    GPU3D_Texcache.h
     melonDLDI.h
     NDS.cpp
     NDSCart.cpp
@@ -78,6 +80,9 @@ if (ENABLE_OGLRENDERER)
         GPU_OpenGL.cpp
         GPU_OpenGL_shaders.h
         GPU3D_OpenGL.cpp
+        GPU3D_Compute.cpp
+        GPU3D_TexcacheOpenGL.cpp
+        GPU3D_TexcacheOpenGL.h
         GPU3D_OpenGL_shaders.h
         OpenGLSupport.cpp)
 

src/DMA.cpp

@@ -21,6 +21,7 @@
 #include "DSi.h"
 #include "DMA.h"
 #include "GPU.h"
+#include "GPU3D.h"
 #include "DMA_Timings.h"
 #include "Platform.h"
 

src/DSi_NDMA.cpp

@@ -22,6 +22,7 @@
 #include "DSi_NDMA.h"
 #include "GPU.h"
 #include "DSi_AES.h"
+#include "GPU3D.h"
 
 namespace melonDS
 {

src/GPU.cpp

@@ -23,7 +23,7 @@
 #include "ARMJIT.h"
 
 #include "GPU2D_Soft.h"
-#include "GPU3D_Soft.h"
+#include "GPU3D.h"
 
 namespace melonDS
 {

src/GPU2D.cpp

@@ -20,6 +20,7 @@
 #include <string.h>
 #include "NDS.h"
 #include "GPU.h"
+#include "GPU3D.h"
 
 namespace melonDS
 {

src/GPU2D_Soft.cpp

@@ -18,7 +18,7 @@
 
 #include "GPU2D_Soft.h"
 #include "GPU.h"
-#include "GPU3D_OpenGL.h"
+#include "GPU3D.h"
 
 namespace melonDS
 {

src/GPU3D.cpp

@@ -24,6 +24,7 @@
 #include "FIFO.h"
 #include "GPU3D_Soft.h"
 #include "Platform.h"
+#include "GPU3D.h"
 
 namespace melonDS
 {

src/GPU3D.h

@@ -349,7 +349,14 @@ class Renderer3D
     virtual void RestartFrame(GPU& gpu) {};
     virtual u32* GetLine(int line) = 0;
     virtual void Blit(const GPU& gpu) {};
+
+    virtual void SetupAccelFrame() {}
     virtual void PrepareCaptureFrame() {}
+    virtual void BindOutputTexture(int buffer) {}
+
+    virtual bool NeedsShaderCompile() { return false; }
+    virtual void ShaderCompileStep(int& current, int& count) {}
+
 protected:
     Renderer3D(bool Accelerated);
 };