ps3: add support for resolution selection.

src/platform/ps3/ps3app.cpp

@@ -1,7 +1,7 @@
 //
 // Lol Engine
 //
-// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+// Copyright: (c) 2010-2013 Sam Hocevar <sam@hocevar.net>
 //   This program is free software; you can redistribute it and/or
 //   modify it under the terms of the Do What The Fuck You Want To
 //   Public License, Version 2, as published by Sam Hocevar. See
@@ -87,11 +87,52 @@ Ps3App::Ps3App(char const *title, ivec2 res, float fps) :
            (uint8_t *)stack.pst_addr + stack.pst_size);
 #endif
 
-    PSGLdevice* psgl = psglCreateDeviceAuto(GL_ARGB_SCE, GL_DEPTH_COMPONENT24,
-                                       GL_MULTISAMPLING_4X_SQUARE_ROTATED_SCE);
+    PSGLdeviceParameters psgldp =
+    {
+        enable: PSGL_DEVICE_PARAMETERS_COLOR_FORMAT
+              | PSGL_DEVICE_PARAMETERS_DEPTH_FORMAT
+              | PSGL_DEVICE_PARAMETERS_MULTISAMPLING_MODE
+              | PSGL_DEVICE_PARAMETERS_WIDTH_HEIGHT,
+        colorFormat: GL_ARGB_SCE, /* can also be GL_RGBA16F_ARB */
+        depthFormat: GL_DEPTH_COMPONENT16, /* can also be 24-bit */
+        multisamplingMode: GL_MULTISAMPLING_4X_SQUARE_ROTATED_SCE,
+        width: 720,
+        height: 480,
+    };
+
+    /* Find closest valid resolution */
+    ivec2 const valid_resolutions[8] =
+    {
+        ivec2( 720,  480),
+        ivec2( 720,  576),
+        ivec2(1280,  720),
+        ivec2(1920, 1080),
+        ivec2( 960, 1080),
+        ivec2(1280, 1080),
+        ivec2(1440, 1080),
+        ivec2(1600, 1080),
+    };
+
+    for (int i = 0; i < 8; ++i)
+    {
+        ivec2 cur(psgldp.width, psgldp.height);
+        if (sqlength(valid_resolutions[i] - res) < sqlength(cur - res))
+        {
+            psgldp.width = valid_resolutions[i].x;
+            psgldp.height = valid_resolutions[i].y;
+        }
+    }
+
+    /* Create graphics device */
+    PSGLdevice* psgl = psglCreateDeviceExtended(&psgldp);
+    if (!psgl)
+        Log::Error("could not create PSGL device; expect imminent crash\n");
+
     GLuint w, h;
     psglGetDeviceDimensions(psgl, &w, &h);
-    res = ivec2(w, h);
+    ivec2 newres(w, h);
+    Log::Debug("resolution asked %d×%d, closest valid %d×%d, final %d×%d\n",
+               res.x, res.y, psgldp.width, psgldp.height, newres.x, newres.y);
 
     PSGLcontext *ctx = psglCreateContext();
     psglMakeCurrent(ctx, psgl);
@@ -101,7 +142,7 @@ Ps3App::Ps3App(char const *title, ivec2 res, float fps) :
 
     /* Initialise everything */
     Ticker::Setup(fps);
-    Video::Setup(res);
+    Video::Setup(newres);
     Audio::Setup(2);
 
     /* Autoreleased objects */