#include "common.h"
#include <acess/sys.h>
#include <acess/devices/terminal.h>
+#include <image.h>
// === PROTOTYPES ===
void Video_Setup(void);
Video_FillRect(X+W-1, Y, 1, H, Color);
}
+/**
+ * \brief Draw text to the screen
+ */
void Video_DrawText(short X, short Y, short W, short H, void *Font, int Point, uint32_t Color, char *Text)
{
// TODO!
}
+
+/**
+ * \brief Draw an image to the screen
+ * \todo Maybe have support for an offset in the image
+ */
+void Video_DrawImage(short X, short Y, short W, short H, tImage *Image)
+{
+ int x, y;
+ uint8_t *buf = (uint8_t *)(gpScreenBuffer + Y*giScreenWidth + X);
+ uint8_t *data = Image->Data;
+
+ // 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;
+
+ switch( Image->Format )
+ {
+ 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;
+ }
+}