first attempt at things

(also fix softrenderer reset)

src/libui_sdl/Platform.cpp

@@ -24,6 +24,7 @@
 #include "PlatformConfig.h"
 #include "LAN_Socket.h"
 #include "LAN_PCap.h"
+#include "libui/ui.h"
 #include <string>
 
 #ifdef __WIN32__
@@ -302,6 +303,12 @@ void Semaphore_Post(void* sema)
 }
 
 
+void* GL_GetProcAddress(const char* proc)
+{
+    return uiGLGetProcAddress(proc);
+}
+
+
 bool MP_Init()
 {
     int opt_true = 1;

src/libui_sdl/libui/ui.h

@@ -604,7 +604,7 @@ _UI_EXTERN void uiDrawText(uiDrawContext *c, double x, double y, uiDrawTextLayou
 
 typedef struct uiGLContext uiGLContext;
 
-_UI_EXTERN uiGLContext *uiGLNewContext(uiControl* c);
+_UI_EXTERN uiGLContext *uiGLNewContext(uiControl* c, int vermajor, int verminor);
 _UI_EXTERN void uiGLFreeContext(uiGLContext* ctx);
 _UI_EXTERN void uiGLMakeContextCurrent(uiGLContext* ctx);
 _UI_EXTERN void *uiGLGetProcAddress(const char* proc);

src/libui_sdl/libui/windows/gl.cpp

@@ -1,6 +1,9 @@
 // 31 march 2019
 #include "uipriv_windows.hpp"
 
+#include <GL/gl.h>
+#include <GL/wglext.h>
+
 struct uiGLContext
 {
     uiControl* c;
@@ -11,9 +14,10 @@ struct uiGLContext
 };
 
 
-uiGLContext* uiGLNewContext(uiControl* c)
+uiGLContext* uiGLNewContext(uiControl* c, int vermajor, int verminor)
 {
     uiGLContext* ctx;
+    BOOL res;
 
     ctx = uiNew(uiGLContext);
 
@@ -25,7 +29,10 @@ uiGLContext* uiGLNewContext(uiControl* c)
     else
     {
         // windowless context
-        ctx->hwnd = GetDesktopWindow();
+        //ctx->hwnd = GetDesktopWindow();
+        // nope.
+        uiFree(ctx);
+        return NULL;
     }
 
     PIXELFORMATDESCRIPTOR pfd;
@@ -41,15 +48,71 @@ uiGLContext* uiGLNewContext(uiControl* c)
     pfd.iLayerType = PFD_MAIN_PLANE;
 
     ctx->dc = GetDC(ctx->hwnd);
+    if (!ctx->dc)
+    {
+        uiFree(ctx);
+        return NULL;
+    }
 
     int pixelformat = ChoosePixelFormat(ctx->dc, &pfd);
-    SetPixelFormat(ctx->dc, pixelformat, &pfd);
+    res = SetPixelFormat(ctx->dc, pixelformat, &pfd);
+    if (!res)
+    {
+        ReleaseDC(ctx->hwnd, ctx->dc);
+        uiFree(ctx);
+        return NULL;
+    }
 
     ctx->rc = wglCreateContext(ctx->dc);
+    if (!ctx->rc)
+    {
+        ReleaseDC(ctx->hwnd, ctx->dc);
+        uiFree(ctx);
+        return NULL;
+    }
+
+    wglMakeCurrent(ctx->dc, ctx->rc);
+
+    if (vermajor >= 3)
+    {
+        HGLRC (*wglCreateContextAttribsARB)(HDC,HGLRC,const int*);
+        HGLRC rc_better = NULL;
+
+        wglCreateContextAttribsARB = (HGLRC(*)(HDC,HGLRC,const int*))wglGetProcAddress("wglCreateContextAttribsARB");
+        if (wglCreateContextAttribsARB)
+        {
+            int attribs[15];
+            int i = 0;
+
+            attribs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
+            attribs[i++] = vermajor;
+            attribs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
+            attribs[i++] = verminor;
+
+            attribs[i] = 0;
+            rc_better = wglCreateContextAttribsARB(ctx->dc, NULL, attribs);
+        }
+
+        wglMakeCurrent(NULL, NULL);
+        wglDeleteContext(ctx->rc);
+
+        if (!rc_better)
+        {
+            ReleaseDC(ctx->hwnd, ctx->dc);
+            uiFree(ctx);
+            return NULL;
+        }
+
+        ctx->rc = rc_better;
+        wglMakeCurrent(ctx->dc, ctx->rc);
+    }
+
+    return ctx;
 }
 
 void uiGLFreeContext(uiGLContext* ctx)
 {
+    wglMakeCurrent(NULL, NULL);
     wglDeleteContext(ctx->rc);
     ReleaseDC(ctx->hwnd, ctx->dc);
     uiFree(ctx);

src/libui_sdl/main.cpp

@@ -392,6 +392,14 @@ void FeedMicInput()
 
 int EmuThreadFunc(void* burp)
 {
+    // TODO: fail gracefully, support older OpenGL, etc
+    uiGLContext* glctx = uiGLNewContext(uiControl(MainDrawArea), 4, 3); // haw haw haw
+    uiGLMakeContextCurrent(glctx);
+
+    void* testor = uiGLGetProcAddress("glUseProgram");
+    void* testor2 = uiGLGetProcAddress("glBindFramebuffer");
+    printf("OPENGL: %p %p\n", testor, testor2);
+
     NDS::Init();
 
     MainScreenPos[0] = 0;
@@ -616,6 +624,8 @@ int EmuThreadFunc(void* burp)
     NDS::DeInit();
     Platform::LAN_DeInit();
 
+    uiGLFreeContext(glctx);
+
     return 44203;
 }
 
@@ -1652,6 +1662,7 @@ void ApplyNewSettings(int type)
 
     if (type == 0) // general emu settings
     {
+        // TODO!! REMOVE ME
         GPU3D::SoftRenderer::SetupRenderThread();
     }
     else if (type == 1) // wifi settings