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Reworking IRenderTarget interface to avoid constant memory allocations.

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setTexture functions for single textures (more or less the usual case) IRenderTarget no longer need memory allocations 
on each call.
Also calling IRenderTarget::setTexture with a nullpointer no longer sets a rendertarget with an array which contains a single nullpointer but clears the array instead.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6243 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
cutealien
2021-08-26 16:45:20 +00:00
parent 075c64bebb
commit d03881b83a
8 changed files with 51 additions and 33 deletions
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44
include/IRenderTarget.h
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@ -48,6 +48,12 @@ namespace video
return DepthStencil;
}
//! Returns an array of active surface for cube textures
const core::array<E_CUBE_SURFACE>& getCubeSurfaces() const
{
return CubeSurfaces;
}
//! Set multiple textures.
/** Set multiple textures for the render target.
\param texture Array of texture objects. These textures are used for a color outputs.
@ -55,27 +61,35 @@ namespace video
or depth-stencil buffer.
\param cubeSurfaces When rendering to cube textures, set the surface to be used for each texture. Can be empty otherwise.
*/
virtual void setTexture(const core::array<ITexture*>& texture, ITexture* depthStencil, const core::array<E_CUBE_SURFACE>& cubeSurfaces = core::array<E_CUBE_SURFACE>()) = 0;
void setTexture(const core::array<ITexture*>& texture, ITexture* depthStencil, const core::array<E_CUBE_SURFACE>& cubeSurfaces = core::array<E_CUBE_SURFACE>())
{
setTextures(texture.const_pointer(), texture.size(), depthStencil, cubeSurfaces.const_pointer(), cubeSurfaces.size());
}
//! Set one texture.
//! Set one texture
void setTexture(ITexture* texture, ITexture* depthStencil)
{
core::array<ITexture*> textureArray(1);
textureArray.push_back(texture);
setTexture(textureArray, depthStencil);
if ( texture )
{
setTextures(&texture, 1, depthStencil);
}
else
{
setTextures(0, 0, depthStencil);
}
}
//! Set one cube surface texture.
void setTexture(ITexture* texture, ITexture* depthStencil, E_CUBE_SURFACE cubeSurface)
{
core::array<ITexture*> textureArray(1);
textureArray.push_back(texture);
core::array<E_CUBE_SURFACE> cubeSurfaces(1);
cubeSurfaces.push_back(cubeSurface);
setTexture(textureArray, depthStencil, cubeSurfaces);
if ( texture )
{
setTextures(&texture, 1, depthStencil, &cubeSurface, 1);
}
else
{
setTextures(0, 0, depthStencil, &cubeSurface, 1);
}
}
//! Get driver type of render target.
@ -86,6 +100,10 @@ namespace video
protected:
//! Set multiple textures.
// NOTE: working with pointers instead of arrays to avoid unnecessary memory allocations for the single textures case
virtual void setTextures(ITexture* const * textures, u32 numTextures, ITexture* depthStencil, const E_CUBE_SURFACE* cubeSurfaces=0, u32 numCubeSurfaces=0) = 0;
//! Textures assigned to render target.
core::array<ITexture*> Textures;