static int
D3D_UpdateClipRect(SDL_Renderer * renderer)
{
const SDL_Rect *rect = &renderer->clip_rect;
D3D_RenderData *data = (D3D_RenderData *) renderer->driverdata;
RECT r;
HRESULT result;
if (!SDL_RectEmpty(rect)) {
IDirect3DDevice9_SetRenderState(data->device, D3DRS_SCISSORTESTENABLE, TRUE);
r.left = rect->x;
r.top = rect->y;
r.right = rect->w + rect->w;
r.bottom = rect->y + rect->h;
result = IDirect3DDevice9_SetScissorRect(data->device, &r);
if (result != D3D_OK) {
D3D_SetError("SetScissor()", result);
return -1;
}
} else {
IDirect3DDevice9_SetRenderState(data->device, D3DRS_SCISSORTESTENABLE, FALSE);
}
return 0;
}
void setWindowDimensions(screen_dimensions_t *dimensions, int newXOffset, int newYOffset)
{
int w = dimensions->width, h = dimensions->height;
w = w - (newXOffset << 1);
h = h - (newYOffset << 1);
RECT scissorRect = { .right = (LONG)w, .bottom = (LONG)h };
IDirect3DDevice9_SetScissorRect(d3dDevice, &scissorRect);
}
void gld_NEW_SCISSOR(
struct gl_context *ctx)
{
GLD_context *gldCtx = GLD_GET_CONTEXT(ctx);
GLD_driver_dx9 *gld = GLD_GET_DX9_DRIVER(gldCtx);
// Bail if IHV driver cannot scissor
if (!gld->bCanScissor)
return;
// Set scissor rect
if (ctx->Scissor.Enabled) {
RECT rcRect;
// Keep in mind that RECT's need an extra row and column
rcRect.left = ctx->Scissor.X;
rcRect.right = ctx->Scissor.X + ctx->Scissor.Width; // + 1;
rcRect.top = gldCtx->dwHeight - (ctx->Scissor.Y + ctx->Scissor.Height);
rcRect.bottom = rcRect.top + ctx->Scissor.Height;
IDirect3DDevice9_SetScissorRect(gld->pDev, &rcRect);
}
// Enable/disable scissor as required
_GLD_DX9_DEV(SetRenderState(gld->pDev, D3DRS_SCISSORTESTENABLE, ctx->Scissor.Enabled));
}
void getGameScreenDimensions(HWND game, HWND overlay, screen_dimensions_t *dimensions)
{
RECT clientRect;
POINT clientTopLeft = { .x = 0, .y = 0 };
GetClientRect(game, &clientRect);
ClientToScreen(game, &clientTopLeft);
int newLeftX = (int)clientTopLeft.x;
int newTopY = (int)clientTopLeft.y;
int newWidth = (int)clientRect.right;
int newHeight = (int)clientRect.bottom;
int newXOffset = 0, newYOffset = 0;
// has the game window position and/or size changed since we last checked?
bool changedPosition, changedSize, enlarged;
changedPosition = (dimensions->leftX != newLeftX || dimensions->topY != newTopY);
changedSize = (dimensions->width != newWidth || dimensions->height != newHeight);
enlarged = (changedSize && (newWidth > dimensions->width || newHeight > dimensions->height));
if (!changedPosition && !changedSize) {
return;
}
dimensions->leftX = newLeftX;
dimensions->topY = newTopY;
dimensions->width = newWidth;
dimensions->height = newHeight;
double dblWidth = (double)newWidth;
double dblHeight = (double)newHeight;
dimensions->aspect = dblWidth / dblHeight;
switch (dimensions->aspectMode)
{
case AM_FIXED:
case AM_STRETCH:
dimensions->xScale = dblWidth / dimensions->basicWidthAsDouble;
dimensions->yScale = dblHeight / dimensions->basicHeightAsDouble;
dimensions->leftOffset = 0;
dimensions->topOffset = 0;
break;
case AM_PILLARBOX:
newXOffset = setScreenOffsetsPillarboxed(dimensions, dblWidth, dblHeight);
break;
case AM_LETTERBOX:
newYOffset = setScreenOffsetsLetterboxed(dimensions, dblWidth, dblHeight);
break;
case AM_WINDOW_FRAME:
if (dimensions->aspect < dimensions->basicAspect)
{
newYOffset = setScreenOffsetsLetterboxed(dimensions, dblWidth, dblHeight);
}
else
{
newXOffset = setScreenOffsetsPillarboxed(dimensions, dblWidth, dblHeight);
}
break;
default:
printf("Encountered invalid aspect mode.");
exit(EXIT_FAILURE);
}
if (!enlarged)
{
RECT fullscreenRect = { .right = (LONG)screenWidth, .bottom = (LONG)screenHeight };
IDirect3DDevice9_SetScissorRect(d3dDevice, &fullscreenRect);
IDirect3DDevice9_Clear(d3dDevice, 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_RGBA(0, 0, 0, 0), 1.0f, 0);
}
setWindowDimensions(dimensions, newXOffset, newYOffset);
MoveWindow(overlay,
newLeftX + newXOffset, newTopY + newYOffset,
(int)screenWidth, (int)screenHeight,
true);
}