In older versions of DirectXTK, you had to handle orientation changes via the custom transform matrix on Begin().
AFTER EFFECTS HOW TO CREATE RECTANGLE PARTICLE PIXEL SORTER WINDOWS
For Windows Store apps, DirectX applications are encouraged to handle the rotation internally rather than relying on DXGI's auto-rotation handling. Immediate and Deferred Rendering Orientationįor phones, laptops, and tablets the orientation of the display can be changed by the user. Each SpriteBatch instance only supports drawing from one thread at a time, but you can simultaneously submit sprites on multiple threads if you create a separate SpriteBatch instance per Direct3D 11 deferred context. With Feature Level 9.3, you can make use of instancing, and on Feature Level 10.0+ you can make use of the geometry shader to implement point-sprites Threading modelĬreation is fully asynchronous, so you can instantiate multiple SpriteBatch instances at the same time on different threads. This is robust and works well for the typical scale of usage for sprite batch.įor more extreme usage scenarios (large particle systems, star fields, etc.), writing a custom sprite implementation is likely the better solution over using SpriteBatch. The submission maximum batch size (2048) is within the limits of Feature Level 9.1's requirement to use 16-bit indices ( DXGI_FORMAT_R16_UINT) and the maximum primitives per batch limit of 65535. The implementation in SpriteBatch uses dynamic vertex buffers with 4 vertices per sprite, which works on all feature levels. The techniques described in the SpriteEffects sample for XNA Game Studio also work with the C++ SpriteBatch. The techniques described for XNA Game Studio will work with the C++ SpriteBatch.įor Direct3D Feature Level 10.0 or better hardware, these are better done using PostProcess Normal-mapped sprites
The SpriteSheet class demonstrates drawing sprites from a sprite sheet (aka "texture atlas") to more efficiently use texture memory. The ScrollingBackground class demonstrates drawing a scrolling background. The AnimatedTexture class demonstrates drawing an animated sprite. The same set of techniques that were used with XNA Game Studio's SpriteBatch can be adapted to the DirectXTK implementation. SpriteBatch-> Begin(SpriteSortMode_Deferred,ĬD3D11_RECT r( /* pixel rectangle coordinates here */) To make use of 'straight' alpha textures, provide a blend state object to Begin. SpriteSortMode.Immediate in XNA Game Studio 4.0 Alpha blendingĪlpha blending defaults to using premultiplied alpha. Return of the SpriteBatch: sorting part 3 It is reasonable to create several, Begin them at the same time with different sort modes, submit sprites to different batches in arbitrary orders as you traverse a scene, then End the batches in whatever order you want these groups of sprites to be drawn. Multiple SpriteBatch instances are lightweight. This is expensive, but convenient in rare cases when you need to set shader constants differently per sprite.
SpriteSortMode_Immediate disables all batching, submitting a separate Direct3D draw call for each sprite. When drawing scenes with multiple depth layers, SpriteSortMode_BackToFront or SpriteSortMode_FrontToBack will sort by the layerDepth parameter specified to each Draw call.
If it is not possible to draw in texture order, the second most efficient approach is to use SpriteSortMode_Texture, which will automatically sort on your behalf. For most efficient rendering, use SpriteSortMode_Deferred (which batches up sprites, then submits them all to the GPU during the End call), and manually draw everything in texture order. The first parameter to SpriteBatch::Begin is a SpriteSortMode enum. The position, rotation, origin, and scale are used to compute the sprite triangle's drawing location. The source rectangle is used to compute the texture coordinates for the sprite on the texture. SpriteEffects enum (for horizontal or vertical mirroring).Origin point (in units of pixels if using the default transformation): position, scaling and rotation are relative to this.Tint color (defaults to 1,1,1,1 which means 'no tinting').Optional source rectangle (in units of pixels) for drawing just part of a texture (i.e.Specify screen position as XMFLOAT2, XMVECTOR or RECT (in units of pixels if using default transformation).The Draw method has many overloads with parameters controlling: SpriteBatch-> Draw(texture, XMFLOAT2(x, y))
0 kommentar(er)
