win32: pass around active shader to parameter dialog

win32/COpenGL.h

@@ -82,6 +82,10 @@ public:
 	bool SetFullscreen(bool fullscreen);
 	void SetSnes9xColorFormat(void);
 	void EnumModes(std::vector<dMode> *modeVector);	
+	GLSLShader *GetActiveShader()
+	{
+		return glslShader;
+	}
 };
 
 

win32/win32_display.cpp

@@ -617,6 +617,11 @@ int WinGetAutomaticInputRate(void)
     return (int)newInputRate;
 }
 
+GLSLShader *WinGetActiveGLSLShader()
+{
+	return OpenGL.GetActiveShader();
+}
+
 /* Depth conversion functions begin */
 
 void Convert16To24 (SSurface *src, SSurface *dst, RECT *srect)

win32/win32_display.h

@@ -10,6 +10,7 @@
 #include "wsnes9x.h"
 #include "port.h"
 #include "render.h"
+#include "../shaders/glsl.h"
 #include <vector>
 
 #define IsHiRes(x) ((x.Height > SNES_HEIGHT_EXTENDED || x.Width == 512))
@@ -40,5 +41,6 @@ char *ReadShaderFileContents(const TCHAR *filename);
 void ReduceToPath(TCHAR *filename);
 double WinGetRefreshRate();
 int WinGetAutomaticInputRate();
+GLSLShader *WinGetActiveGLSLShader();
 
 #endif

win32/wsnes9x.cpp

@@ -7740,14 +7740,17 @@ INT_PTR CALLBACK DlgFunky(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
                 break;
             }
 			ShowWindow(hDlg, SW_HIDE);
-            GLSLShader shader;
-            shader.load_shader(_tToChar(GUI.OGLshaderFileName));
-            CShaderParamDlg dlg(shader);
+			WinDisplayApplyChanges();
+			WinRefreshDisplay();
+			GLSLShader *shader = WinGetActiveGLSLShader();
+			if (shader) {
+				CShaderParamDlg dlg(*shader);
 				if (dlg.show()) {
 					SetDlgItemText(hDlg, IDC_SHADER_GLSL_FILE, GUI.OGLshaderFileName);
 					WinDisplayApplyChanges();
 					WinRefreshDisplay();
 				}
+			}
 			ShowWindow(hDlg, SW_SHOW);
             break;
         }