// Internal function - Called to load up a texture map - file is known to exist
Texture *textureFromBitmap(bitmap *loadbm, Texture *tex)
{ bitmap *swizzleBm, *scaleBm, *resizeCanvasSrc;
bool mustSwizzle = false;
bool mustScale = false;
// Step 1: Check for a need to swizzle (if the video card doesn't support this texture mode)
uintf dataType = loadbm->flags & (bitmap_DataTypeMask | bitmap_DataInfoMask);
// ### This code is not yet complete, must leave this block with 'swizzleBM' pointing to swizzled bitmap data
// If Video card only handles 'Power-of-2' texture dimensions
bool resizeCanvas=false;
// if (GLESWarnings) //!(videoFeatures & videodriver_nonP2Tex))
{ uintf newCanvasWidth = loadbm->width;
uintf newCanvasHeight = loadbm->height;
if (!isPow2(loadbm->width))
{ resizeCanvas=true;
newCanvasWidth=nextPow2(loadbm->width);
}
if (!isPow2(loadbm->height))
{ resizeCanvas=true;
newCanvasHeight=nextPow2(loadbm->height);
}
if (resizeCanvas)
{ resizeCanvasSrc = loadbm;
loadbm = newbitmap("resizeCanvasP2Tex",newCanvasWidth,newCanvasHeight,bitmap_ARGB32);
uintf x,y;
uint32 *src32 = (uint32 *)resizeCanvasSrc->pixel;
uint32 *dst32 = (uint32 *)loadbm->pixel;
for (y=0; y<resizeCanvasSrc->height; y++)
{ uint32 *src = &src32[y*(resizeCanvasSrc->width)];
uint32 *dst = &dst32[y*newCanvasWidth];
for (x=0; x<resizeCanvasSrc->width; x++)
*dst++ = *src++;
for (;x<newCanvasWidth; x++)
*dst++ = 0;
}
for (;y<newCanvasHeight; y++)
{ uint32 *dst = &dst32[y*newCanvasWidth];
for (x=0; x<newCanvasWidth; x++)
*dst++=0;
}
}
/* // Work out X scale
uintf size = 1;
while (size<=maxtexwidth)
{ if (newx<=size) break;
size <<=1;
}
if (size>maxtexwidth) size = maxtexwidth;
newx = size;
// Work out Y scale
size = 1;
while (size<=maxtexheight)
{ if (newy<=size) break;
size <<=1;
}
if (size>maxtexheight) size = maxtexheight;
newy = size;
*/
}
// Step 2: Check if we need to resize - this may change swizzle mode
uintf newx = loadbm->width;
uintf newy = loadbm->height;
if (newx>maxtexwidth)
newx = maxtexwidth;
if (newy>maxtexheight)
newy = maxtexheight;
if (newx!=loadbm->width || newy!=loadbm->height)
{ dataType = bitmap_DataTypeRGB | bitmap_RGB_32bit;
mustSwizzle = true;
mustScale = true;
}
if (mustSwizzle)
{ dataType |= loadbm->flags & bitmap_AlphaMask;
swizzleBm = SwizzleBitmap(loadbm, dataType);
} else
swizzleBm = loadbm;
if (mustScale)
{ // Bitmap needs to be resized before hardware will accept it
scaleBm = scalebitmap(swizzleBm,newx,newy);
} else
scaleBm = swizzleBm;
// If we don't have a texture provided, create a new one
if (!tex)
tex = newTexture(NULL, 0, 0);
downloadbitmaptex(tex, scaleBm, 0);
estimatedtexmemused += tex->texmemused;
if (mustScale)
deleteBitmap(scaleBm);
if (mustSwizzle)
deleteBitmap(swizzleBm);
if (resizeCanvas)
{ deleteBitmap(loadbm);
loadbm = resizeCanvasSrc;
tex->flags |= texture_canvasSize;
tex->UVscale.x = (float)loadbm->width / (float)tex->width;
tex->UVscale.y = (float)loadbm->height/ (float)tex->height;
}
return tex;
}
int GPbitblt (
Gwidget_t *widget, Gpoint_t gp, Grect_t gr, Gbitmap_t *bitmap,
char *mode, Ggattr_t *ap
) {
PIXrect_t pr, r;
PIXpoint_t pp;
PIXsize_t s;
Gsize_t scale;
Gxy_t p;
HBITMAP pix;
HDC gc;
double tvx, tvy, twx, twy;
if (gr.o.x > gr.c.x)
p.x = gr.o.x, gr.o.x = gr.c.x, gr.c.x = p.x;
if (gr.o.y > gr.c.y)
p.y = gr.o.y, gr.o.y = gr.c.y, gr.c.y = p.y;
if (strcmp (mode, "b2c") == 0) {
tvx = WPU->vsize.x, tvy = WPU->vsize.y;
twx = WPU->wrect.c.x - WPU->wrect.o.x;
twy = WPU->wrect.c.y - WPU->wrect.o.y;
scale.x = tvx / twx, scale.y = tvy / twy;
if (scale.x == 1 && scale.y == 1) {
pix = bitmap->u.bmap.orig;
bitmap->scale = scale;
} else {
if (scale.x != bitmap->scale.x || scale.y != bitmap->scale.y)
scalebitmap (widget, bitmap, scale, TRUE, 1);
pix = bitmap->u.bmap.scaled;
}
pr = rdrawtopix (widget, gr);
pp = pdrawtobpix (bitmap, gp);
s.x = pr.c.x - pr.o.x + 1, s.y = pr.c.y - pr.o.y + 1;
r.o.x = pp.x, r.o.y = pp.y - s.y + 1;
r.c.x = r.o.x + s.x - 1, r.c.y = r.o.y + s.y - 1;
if (r.o.x < 0)
pr.o.x -= r.o.x, r.o.x = 0;
if (r.o.y < 0)
pr.o.y -= r.o.y, r.o.y = 0;
if (r.c.x >= bitmap->size.x * scale.x) {
pr.c.x -= (r.c.x + 1 - bitmap->size.x * scale.x);
r.c.x = bitmap->size.x * scale.x - 1;
}
if (r.c.y >= bitmap->size.y * scale.y) {
pr.c.y -= (r.c.y + 1 - bitmap->size.y * scale.y);
r.c.y = bitmap->size.y * scale.y - 1;
}
if (pr.o.x < 0)
r.o.x -= pr.o.x, pr.o.x = 0;
if (pr.o.y < 0)
r.o.y -= pr.o.y, pr.o.y = 0;
setgattr (widget, ap);
gc = CreateCompatibleDC (GC);
SelectObject (gc, pix);
BitBlt (
GC, pr.o.x, pr.o.y, r.c.x - r.o.x + 1, r.c.y - r.o.y + 1,
gc, r.o.x, r.o.y, (WPU->gattr.mode == G_SRC) ? SRCCOPY : SRCINVERT
);
DeleteDC (gc);
} else if (strcmp (mode, "c2b") == 0) {
tvx = WPU->vsize.x, tvy = WPU->vsize.y;
twx = WPU->wrect.c.x - WPU->wrect.o.x;
twy = WPU->wrect.c.y - WPU->wrect.o.y;
scale.x = tvx / twx, scale.y = tvy / twy;
if (scale.x == 1 && scale.y == 1) {
pix = bitmap->u.bmap.orig;
bitmap->scale = scale;
} else {
if (scale.x != bitmap->scale.x || scale.y != bitmap->scale.y)
scalebitmap (widget, bitmap, scale, FALSE, 1);
pix = bitmap->u.bmap.scaled;
}
pr = rdrawtobpix (bitmap, gr);
pp = pdrawtopix (widget, gp);
s.x = pr.c.x - pr.o.x + 1, s.y = pr.c.y - pr.o.y + 1;
r.o.x = pp.x, r.o.y = pp.y - s.y + 1;
r.c.x = r.o.x + s.x - 1, r.c.y = r.o.y + s.y - 1;
if (pr.o.x < 0)
r.o.x -= pr.o.x, pr.o.x = 0;
if (pr.o.y < 0)
r.o.y -= pr.o.y, pr.o.y = 0;
if (pr.c.x >= bitmap->size.x * scale.x) {
r.c.x -= (pr.c.x + 1 - bitmap->size.x * scale.x);
pr.c.x = bitmap->size.x * scale.x - 1;
}
if (pr.c.y >= bitmap->size.y * scale.y) {
r.c.y -= (pr.c.y + 1 - bitmap->size.y * scale.y);
pr.c.y = bitmap->size.y * scale.y - 1;
}
if (r.o.x < 0)
pr.o.x -= r.o.x, r.o.x = 0;
if (r.o.y < 0)
pr.o.y -= r.o.y, r.o.y = 0;
setgattr (widget, ap);
gc = CreateCompatibleDC (GC);
SelectObject (gc, pix);
BitBlt (
gc, pr.o.x, pr.o.y, r.c.x - r.o.x + 1, r.c.y - r.o.y + 1,
GC, r.o.x, r.o.y, (WPU->gattr.mode == G_SRC) ? SRCCOPY : SRCINVERT
);
if (pix != bitmap->u.bmap.orig)
scalebitmap (widget, bitmap, scale, TRUE, -1);
DeleteDC (gc);
}
return 0;
}
