Kanzi 3.9.10
kanzi::Texture::CreateInfoHostCopy2D Struct Reference

Texture creation parameters for two dimensional texture that is updated from the CPU. More...

#include <kanzi/core.ui/graphics2d/texture_create_info.hpp>

Inheritance diagram for kanzi::Texture::CreateInfoHostCopy2D:
[legend]

Public Member Functions

 CreateInfoHostCopy2D (unsigned int width, unsigned int height, GraphicsFormat format)
 Constructor for CreateInfoHostCopy2D.
 
- Public Member Functions inherited from kanzi::Texture::CreateInfo2D
 CreateInfo2D (BitmapImageUniquePtr image)
 CreateInfo2D constructor for texture creation parameters, for creating a two dimensional texture that is initialized from an image.
 
 CreateInfo2D (Sampler::MipmapMode mipmaps, BitmapImageUniquePtr image)
 CreateInfo2D constructor that also takes in mipmap mode.
 
 CreateInfo2D (unsigned int width, unsigned int height, GraphicsFormat format)
 CreateInfo2D constructor for texture creation parameters, for creating a two dimensional texture with specified format and size.
 
- Public Member Functions inherited from kanzi::Texture::CreateInfo
Status adjust (const Renderer &renderer, string_view name)
 Validates and applies adjustments to some texture creation parameters in case of avoidable error conditions.
 
 CreateInfo ()
 Default constructor for texture create info.
 
void updateShapeAndFormatFromImages ()
 Use updateShapeAndFormatFromImages() to fill in format, width, height from images.
 
Status validate (const Renderer &renderer) const
 Perform validation of texture creation parameters.
 
Status validate (const Renderer &renderer, string_view name) const
 Perform validation of texture creation parameters.
 

Additional Inherited Members

- Public Types inherited from kanzi::Texture::CreateInfo
enum  Status {
  StatusInvalidType , StatusTypeNotSupported , StatusInvalidRenderTargetMode , StatusInvalidImageCount ,
  StatusMissingImages , StatusImageMissingMipmaps , StatusInvalidImageSize , StatusInvalidMinimumSize ,
  StatusInvalidMaximumSize , StatusInvalidMipmapSize , StatusUnsupportedGraphicsFormat , StatusUnsupportedTextureFilter ,
  StatusInvalidFeatures , StatusUnsupportedMultisampleFilter , StatusUnsupportedMultisampleMipmaps , StatusUnsupportedMultisampleSamples ,
  StatusUnsupportedInternalRenderTargetSampleCount , StatusUnsupportedSampleCount , StatusImageFormatMismatch , StatusImageIncompatibleWithDevice ,
  StatusUnsupportedDepthComparisonMode , StatusValid
}
 Status tells if texture creation parameters can be used to create a texture. More...
 
enum class  Type {
  Image , Cubemap , RenderTarget , NativeImage ,
  CubemapRenderTarget
}
 Specifies the available texture types. More...
 
- Static Public Member Functions inherited from kanzi::Texture::CreateInfo
static CreateInfo createSubstitutePattern (const Renderer &renderer, TextureType type)
 Create a texture create info structure for a black 1x1 texture.
 
- Public Attributes inherited from kanzi::Texture::CreateInfo
Sampler::AddressingMode addressingMode
 Texture addressing mode.
 
float anisotropy
 Texture anisotropy.
 
unsigned int depth
 Reserved for future use.
 
GraphicsCompareFunction depthCompareFunction
 Depth comparison function.
 
GraphicsFormat depthStencilFormat
 DepthStencil format.
 
unsigned int features
 Required format features.
 
GraphicsFormat format
 Format for texture.
 
unsigned int height
 Height for the base level of texture.
 
unsigned int heightDivisor
 Automatic size determination divisor for height, 0 when not automatic.
 
vector< BitmapImageSharedPtrimages
 Images that are used to create the texture.
 
Sampler::Filter magnificationFilter
 Texture minification filter.
 
float maxLod
 Reserved for future use.
 
MemoryType memoryType
 Memory type for the texture.
 
Sampler::Filter minificationFilter
 Texture magnification filter.
 
float minLod
 Reserved for future use.
 
float mipLodBias
 Reserved for future use.
 
unsigned int mipmapLevelCount
 Number of mipmap levels for the texture.
 
Sampler::MipmapMode mipmapMode
 Mipmap mode for the texture.
 
NativeDeploymentTarget nativeDeploymentTarget
 Native deployment target to use for memory storage if supported by the backend.
 
RenderTargetMode renderTargetMode
 RenderTarget mode for the texture.
 
unsigned int renderTargetSampleCount
 Specifies number of samples for the draw renderbuffer when RenderTargetMode is RenderTargetModeExternal.
 
TextureType type
 Texture type.
 
unsigned int width
 Width for the base level of texture.
 
unsigned int widthDivisor
 Automatic size determination divisor for width, 0 when not automatic.
 
- Protected Member Functions inherited from kanzi::Texture::CreateInfo
Status validateFormat (const Renderer &renderer) const
 Validates texture format and features.
 
Status validateImages (const Renderer &renderer) const
 Test if given set of images can be used to create Texture.
 
Status validateSize (const Renderer &renderer) const
 Validates texture size against minimum valid texture size (1x1) and maximum supported by graphics adapter.
 
Status validateTargetCompatibility (const Renderer &renderer) const
 Checks for known device incompatibilities, for example with texture formats and size.
 

Detailed Description

Texture creation parameters for two dimensional texture that is updated from the CPU.

You can use CreateInfoHostCopy2D to initialize texture creation parameters for textures that you update from the CPU. Textures will be created with specified format and size, and texture will maintain CPU accessible copy of texture content. Use Texture::getHostCopyImage() to access copy of texture data. Use this kind of texture is when you update texture contents only from the CPU, and you need read access to the texture data. For example glyph cache for font rendering is a plausible use case.

Note
When you create texture from CreateInfoHostCopy2D, texture contents are initially undefined. Use Texture::setData() to specify texture contents.
See also
Texture::getHostCopyImage()
Texture::setData()

Constructor & Destructor Documentation

◆ CreateInfoHostCopy2D()

kanzi::Texture::CreateInfoHostCopy2D::CreateInfoHostCopy2D ( unsigned int width,
unsigned int height,
GraphicsFormat format )
explicit

Constructor for CreateInfoHostCopy2D.

After the CreateInfoHostCopy2D constructor:

  • Texture memoryType is set to GpuAndRam

The following (from CreateInfo2D constructor) also applies:

  • Texture type is set to TypeTwoDimensional.
  • Texture size and format is set according to constructor parameters.

The following (from CreateInfo constructor) also applies:

  • Texture minification and magnification filter settings are set to FilterNearest.
  • Texture wrap mode is set to AddressingModeClamp, so texture will not repeat.
  • Texture mipmap mode is set to MipmapModeBase, and mipmapLevelCount is set to 1, so texture will have only base image, no mipmaps.
Note
After constructor, due to filter settings and lack of mipmaps, the resulting texture should only be used when texture content is shown without scaling. If you show resulting texture content with scaling, the result has noticeable aliasing. Adjust filter and mipmap settings after constructor to reduce aliasing.
Parameters
widthWidth for the texture
heightHeight for the texture
formatFormat for the texture

The documentation for this struct was generated from the following file: