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First pass on SDL render clip rect functionality

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This commit is contained in:
Sam Lantinga 2013-05-04 04:46:00 -07:00
parent 0a3ab9190b
commit 866f2e5f9e
10 changed files with 227 additions and 28 deletions
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74
src/render/direct3d/SDL_render_d3d.c
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@ -186,6 +186,7 @@ static int D3D_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
static void D3D_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int D3D_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture);
static int D3D_UpdateViewport(SDL_Renderer * renderer);
static int D3D_UpdateClipRect(SDL_Renderer * renderer);
static int D3D_RenderClear(SDL_Renderer * renderer);
static int D3D_RenderDrawPoints(SDL_Renderer * renderer,
const SDL_FPoint * points, int count);
@ -510,6 +511,7 @@ D3D_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->UnlockTexture = D3D_UnlockTexture;
renderer->SetRenderTarget = D3D_SetRenderTarget;
renderer->UpdateViewport = D3D_UpdateViewport;
renderer->UpdateClipRect = D3D_UpdateClipRect;
renderer->RenderClear = D3D_RenderClear;
renderer->RenderDrawPoints = D3D_RenderDrawPoints;
renderer->RenderDrawLines = D3D_RenderDrawLines;
@ -814,6 +816,39 @@ D3D_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
IDirect3DTexture9_UnlockRect(data->texture, 0);
}
static int
D3D_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture)
{
D3D_RenderData *data = (D3D_RenderData *) renderer->driverdata;
D3D_TextureData *texturedata;
HRESULT result;
D3D_ActivateRenderer(renderer);
/* Release the previous render target if it wasn't the default one */
if (data->currentRenderTarget != NULL) {
IDirect3DSurface9_Release(data->currentRenderTarget);
data->currentRenderTarget = NULL;
}
if (texture == NULL) {
IDirect3DDevice9_SetRenderTarget(data->device, 0, data->defaultRenderTarget);
return 0;
}
texturedata = (D3D_TextureData *) texture->driverdata;
result = IDirect3DTexture9_GetSurfaceLevel(texturedata->texture, 0, &data->currentRenderTarget);
if(FAILED(result)) {
return D3D_SetError("GetSurfaceLevel()", result);
}
result = IDirect3DDevice9_SetRenderTarget(data->device, 0, data->currentRenderTarget);
if(FAILED(result)) {
return D3D_SetError("SetRenderTarget()", result);
}
return 0;
}
static int
D3D_UpdateViewport(SDL_Renderer * renderer)
{
@ -853,35 +888,28 @@ D3D_UpdateViewport(SDL_Renderer * renderer)
}
static int
D3D_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture)
D3D_UpdateClipRect(SDL_Renderer * renderer)
{
const SDL_Rect *rect = &renderer->clip_rect;
D3D_RenderData *data = (D3D_RenderData *) renderer->driverdata;
D3D_TextureData *texturedata;
RECT r;
HRESULT result;
D3D_ActivateRenderer(renderer);
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;
/* Release the previous render target if it wasn't the default one */
if (data->currentRenderTarget != NULL) {
IDirect3DSurface9_Release(data->currentRenderTarget);
data->currentRenderTarget = NULL;
result = IDirect3DDevice9_SetScissorRect(data->device, &r);
if (result != D3D_OK) {
D3D_SetError("SetScissor()", result);
return -1;
}
} else {
IDirect3DDevice9_SetRenderState(data->device, D3DRS_SCISSORTESTENABLE, FALSE);
}
if (texture == NULL) {
IDirect3DDevice9_SetRenderTarget(data->device, 0, data->defaultRenderTarget);
return 0;
}
texturedata = (D3D_TextureData *) texture->driverdata;
result = IDirect3DTexture9_GetSurfaceLevel(texturedata->texture, 0, &data->currentRenderTarget);
if(FAILED(result)) {
return D3D_SetError("GetSurfaceLevel()", result);
}
result = IDirect3DDevice9_SetRenderTarget(data->device, 0, data->currentRenderTarget);
if(FAILED(result)) {
return D3D_SetError("SetRenderTarget()", result);
}
return 0;
}