/*
- * Acess GUI (AxWin) Version 2
- * By John Hodge (thePowersGang)
+ * Acess2 GUI (AxWin) Version 3
+ * - By John Hodge (thePowersGang)
+ *
+ * video.c
+ * - Video methods
*/
-#include "common.h"
+#include <common.h>
#include <acess/sys.h>
#include <acess/devices/terminal.h>
#include <image.h>
#include "resources/cursor.h"
+#include <stdio.h>
+#include <video.h>
// === PROTOTYPES ===
void Video_Setup(void);
// === GLOBALS ===
int giVideo_CursorX;
int giVideo_CursorY;
+uint32_t *gpScreenBuffer;
// === CODE ===
void Video_Setup(void)
// Create local framebuffer (back buffer)
gpScreenBuffer = malloc( giScreenWidth*giScreenHeight*4 );
- memset32( gpScreenBuffer, 0x8888FF, giScreenWidth*giScreenHeight );
// Set cursor position and bitmap
ioctl(giTerminalFD, TERM_IOCTL_SETCURSORBITMAP, &cCursorBitmap);
Video_SetCursorPos( giScreenWidth/2, giScreenHeight/2 );
-
- Video_Update();
}
void Video_Update(void)
{
- //seek(giTerminalFD, 0, SEEK_SET);
+ _SysDebug("Video_Update - gpScreenBuffer[0] = 0x%x", gpScreenBuffer[0]);
seek(giTerminalFD, 0, 1);
write(giTerminalFD, gpScreenBuffer, giScreenWidth*giScreenHeight*4);
+ _SysDebug("Video_Update - Done");
}
void Video_SetCursorPos(short X, short Y)
ioctl(giTerminalFD, TERM_IOCTL_GETSETCURSOR, &pos);
}
-void Video_FillRect(short X, short Y, short W, short H, uint32_t Color)
-{
- uint32_t *buf = gpScreenBuffer + Y*giScreenWidth + X;
-
- _SysDebug("Video_FillRect: (X=%i, Y=%i, W=%i, H=%i, Color=%08x)",
- X, Y, W, H, Color);
-
- if(W < 0 || X < 0 || X >= giScreenWidth) return ;
- if(X + W > giScreenWidth) W = giScreenWidth - X;
-
- if(H < 0 || Y < 0 || Y >= giScreenHeight) return ;
- if(Y + H > giScreenHeight) H = giScreenHeight - Y;
-
- while( H -- )
- {
- memset32( buf, Color, W );
- buf += giScreenWidth;
- }
-}
-
-void Video_DrawRect(short X, short Y, short W, short H, uint32_t Color)
-{
- Video_FillRect(X, Y, W, 1, Color);
- Video_FillRect(X, Y+H-1, W, 1, Color);
- Video_FillRect(X, Y, 1, H, Color);
- Video_FillRect(X+W-1, Y, 1, H, Color);
-}
-
/**
- * \brief Draw an image to the screen
- * \todo Maybe have support for an offset in the image
+ * \brief Blit an entire buffer to the screen
+ * \note Assumes Pitch = 4*W
*/
-void Video_DrawImage(short X, short Y, short W, short H, tImage *Image)
+void Video_Blit(uint32_t *Source, short DstX, short DstY, short W, short H)
{
- int x, y;
- uint8_t *buf = (uint8_t *)(gpScreenBuffer + Y*giScreenWidth + X);
- uint8_t *data;
-
- // Sanity please
- if( !Image )
- return ;
-
- // Bounds Check
- if( X >= giScreenWidth ) return ;
- if( Y >= giScreenHeight ) return ;
-
- // Wrap to image size
- if( W > Image->Width ) W = Image->Width;
- if( H > Image->Height ) H = Image->Height;
-
- // Wrap to screen size
- if( X + W > giScreenWidth ) W = giScreenWidth - X;
- if( Y + H > giScreenHeight ) H = giScreenHeight - Y;
+ int i;
+ uint32_t *buf;
+
+// _SysDebug("Video_Blit: (%p (%i, %i) %ix%i)", Source, DstX, DstY, W, H);
+
+ if( DstX >= giScreenWidth) return ;
+ if( DstY >= giScreenHeight) return ;
+ // TODO: Handle -ve X/Y by clipping
+ if( DstX < 0 || DstY < 0 ) return ;
+ // TODO: Handle out of bounds by clipping too
+ if( DstX + W > giScreenWidth ) return;
+ if( DstY + H > giScreenHeight )
+ H = giScreenWidth - DstY;
+
+ if( W <= 0 || H <= 0 ) return;
- // Do the render
- data = Image->Data;
- switch( Image->Format )
+// _SysDebug(" Clipped to (%i, %i) %ix%i", DstX, DstY, W, H);
+// _SysDebug(" Source[0] = 0x%x", Source[0]);
+ buf = gpScreenBuffer + DstY*giScreenWidth + DstX;
+ while( H -- )
{
- case IMGFMT_BGRA:
- for( y = 0; y < H; y ++ )
- {
- int r, g, b, a; // New
- int or, og, ob; // Original
- for( x = 0; x < W; x ++ )
- {
- b = data[x*4+0]; g = data[x*4+1]; r = data[x*4+2]; a = data[x*4+3];
- if( a == 0 ) continue; // 100% transparent
- ob = buf[x*4+0]; og = buf[x*4+1]; or = buf[x*4+2];
- // Handle Alpha
- switch(a)
- {
- // Transparent: Handled above
- // Solid
- case 0xFF: break;
- // Half
- case 0x80:
- r = (or + r) / 2;
- g = (og + g) / 2;
- b = (ob + b) / 2;
- break;
- // General
- default:
- r = (or * (255-a) + r * a) / 255;
- g = (og * (255-a) + g * a) / 255;
- b = (ob * (255-a) + b * a) / 255;
- break;
- }
- buf[x*4+0] = b; buf[x*4+1] = g; buf[x*4+2] = r;
- }
- data += Image->Width * 4;
- buf += giScreenWidth * 4;
- }
- break;
-
- // RGB
- case IMGFMT_RGB:
- for( y = 0; y < H; y ++ )
- {
- for( x = 0; x < W; x ++ )
- {
- buf[x*4+0] = data[x*3+2]; // Blue
- buf[x*4+1] = data[x*3+1]; // Green
- buf[x*4+2] = data[x*3+0]; // Red
- }
- data += W * 3;
- buf += giScreenWidth * 4;
- }
- break;
- default:
- _SysDebug("ERROR: Unknown image format %i\n", Image->Format);
- break;
+ for( i = W; i --; )
+ *buf++ = *Source++;
+ buf += giScreenWidth - W;
}
}
+
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