GLES2N64 (from mupen64plus-ae) plugin. Compile and run on the OpenPandora

[mupen64plus-pandora.git] / source / gles2n64 / src / VI.cpp

diff --git a/source/gles2n64/src/VI.cpp b/source/gles2n64/src/VI.cpp
new file mode 100644 (file)
index 0000000..37e280f
--- /dev/null
+++ b/source/gles2n64/src/VI.cpp
@@ -0,0 +1,101 @@
+#include "Common.h"
+#include "gles2N64.h"
+#include "Types.h"
+#include "VI.h"
+#include "OpenGL.h"
+#include "N64.h"
+#include "gSP.h"
+#include "gDP.h"
+#include "RSP.h"
+#include "Debug.h"
+#include "Config.h"
+
+VIInfo VI;
+
+void VI_UpdateSize()
+{
+
+    if (!config.video.force)
+    {
+        f32 xScale = _FIXED2FLOAT( _SHIFTR( *REG.VI_X_SCALE, 0, 12 ), 10 );
+        f32 xOffset = _FIXED2FLOAT( _SHIFTR( *REG.VI_X_SCALE, 16, 12 ), 10 );
+
+        f32 yScale = _FIXED2FLOAT( _SHIFTR( *REG.VI_Y_SCALE, 0, 12 ), 10 );
+        f32 yOffset = _FIXED2FLOAT( _SHIFTR( *REG.VI_Y_SCALE, 16, 12 ), 10 );
+
+        u32 hEnd = _SHIFTR( *REG.VI_H_START, 0, 10 );
+        u32 hStart = _SHIFTR( *REG.VI_H_START, 16, 10 );
+
+        // These are in half-lines, so shift an extra bit
+        u32 vEnd = _SHIFTR( *REG.VI_V_START, 1, 9 );
+        u32 vStart = _SHIFTR( *REG.VI_V_START, 17, 9 );
+
+        //Glide does this:
+        if (hEnd == hStart) hEnd = (u32)(*REG.VI_WIDTH / xScale);
+
+
+        VI.width = (hEnd - hStart) * xScale;
+        VI.height = (vEnd - vStart) * yScale * 1.0126582f;
+    }
+    else
+    {
+        VI.width = config.video.width;
+        VI.height = config.video.height;
+    }
+
+    if (VI.width == 0.0f) VI.width = 320.0f;
+    if (VI.height == 0.0f) VI.height = 240.0f;
+    VI.rwidth = 1.0f / VI.width;
+    VI.rheight = 1.0f / VI.height;
+
+
+    //add display buffer if doesn't exist
+    if (config.ignoreOffscreenRendering)
+    {
+        int i;
+        //int start = *REG.VI_ORIGIN;
+        u32 start = RSP_SegmentToPhysical(*REG.VI_ORIGIN) & 0x00FFFFFF;
+        u32 end = min(start + VI.width * VI.height * 4, RDRAMSize);
+        for(i = 0; i < VI.displayNum; i++)
+        {
+            if (VI.display[i].start <= end && VI.display[i].start >= start) break;
+            if (start <= VI.display[i].end && start >= VI.display[i].start) break;
+        }
+        if (i == VI.displayNum)
+        {
+            //printf("VI IMAGE=%i\n", o);
+            VI.display[i%16].start = start;
+            VI.display[i%16].end = end;
+            VI.displayNum = (VI.displayNum < 16) ? (VI.displayNum+1) : 16;
+        }
+    }
+
+}
+
+void VI_UpdateScreen()
+{
+
+    switch(config.updateMode)
+    {
+
+        case SCREEN_UPDATE_AT_VI_CHANGE:
+            if (*REG.VI_ORIGIN != VI.lastOrigin)
+            {
+                if (*REG.VI_ORIGIN < VI.lastOrigin || *REG.VI_ORIGIN > VI.lastOrigin+0x2000  )
+                    OGL_SwapBuffers();
+
+                VI.lastOrigin = *REG.VI_ORIGIN;
+            }
+            break;
+
+        case SCREEN_UPDATE_AT_VI_UPDATE:
+            if (gSP.changed & CHANGED_COLORBUFFER)
+            {
+                OGL_SwapBuffers();
+                gSP.changed &= ~CHANGED_COLORBUFFER;
+            }
+            break;
+    }
+
+}
+