GpuContext class base
A handle to a graphics context. Used to create and manage GPU resources.
To obtain the default graphics context, use getContext.
Properties
- defaultColorFormat → PixelFormat
-
A supported PixelFormat for textures that store 4-channel colors
(red/green/blue/alpha).
no setter
- defaultDepthStencilFormat → PixelFormat
-
A supported
PixelFormatfor textures that store both a stencil and depth component. This will never return a depth-only or stencil-only texture.no setter - defaultStencilFormat → PixelFormat
-
A supported PixelFormat for textures that store stencil information.
May include a depth channel if a stencil-only format is not available.
no setter
- doesSupportFramebufferRenderMipmap → bool
-
Whether the backend can attach a non-zero mip level of a texture as a
render target (see ColorAttachment.mipLevel). Rendering into a cube map
face or array layer is always supported; only non-zero mip levels are
gated. True on Metal and Vulkan; currently false on the GLES backend,
where rendering into non-zero mip levels is not yet implemented.
no setter
- doesSupportManuallyMippedTextures → bool
-
Whether a texture whose mip levels were uploaded by hand with
Texture.overwrite (rather than generated with
CommandBuffer.generateMipmap) samples with correct per-level selection. True on Metal and Vulkan; on OpenGL ES 2.0 devices without the GL_APPLE_texture_max_level extension this is false, and sampling such a texture reads as black. Check this before relying on hand-built mip chains (for example, prefiltered environment maps).no setter - doesSupportOffscreenMSAA → bool
-
Whether the backend supports multisample anti-aliasing for offscreen
color and stencil attachments. A subset of OpenGLES-only devices do not
support this functionality.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- maxSamplerAnisotropy → int
-
The maximum anisotropy clamp supported by device samplers (see
SamplerOptions.maxAnisotropy).
no setter
- minimumUniformByteAlignment → int
-
The minimum alignment required when referencing uniform blocks stored in a
DeviceBuffer.no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createCommandBuffer(
) → CommandBuffer - Create a new command buffer that can be used to submit GPU commands.
-
createDeviceBuffer(
StorageMode storageMode, int sizeInBytes) → DeviceBuffer - Allocates a new region of GPU-resident memory.
-
createDeviceBufferWithCopy(
ByteData data) → DeviceBuffer -
Allocates a new region of host-visible GPU-resident memory, initialized
with the given
data. -
createHostBuffer(
{int blockLengthInBytes = HostBuffer.kDefaultBlockLengthInBytes}) → HostBuffer - Creates a bump allocator that managed a DeviceBuffer block list.
-
createImageSurface(
int width, int height, {PixelFormat? format}) → GpuImageSurface - Creates an image surface for rendering content that Flutter draws as a ui.Image.
-
createRenderPipeline(
Shader vertexShader, Shader fragmentShader, {VertexLayout? vertexLayout}) → RenderPipeline -
createTexture(
StorageMode storageMode, int width, int height, {PixelFormat format = PixelFormat.r8g8b8a8UNormInt, dynamic sampleCount = 1, TextureType? textureType, bool enableRenderTargetUsage = true, bool enableShaderReadUsage = true, bool enableShaderWriteUsage = false, int mipLevelCount = 1}) → Texture - Allocates a new texture in GPU-resident memory.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
supportsTextureCompression(
TextureCompressionFamily family) → bool - Whether this device supports the given family of block-compressed texture formats. Hardware support is granted on a per-family basis.
-
supportsTextureFormat(
PixelFormat format, {bool renderTarget = false, bool shaderRead = true, bool shaderWrite = false}) → bool -
Whether this device can allocate a texture of the given
formatwith the requested usage flags. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
