hi::v1::gfx_pipeline_SDF::device_shared Struct Reference

Public Member Functions
	device_shared (gfx_device const &device)
	device_shared (device_shared const &)=delete
device_shared &	operator= (device_shared const &)=delete
	device_shared (device_shared &&)=delete
device_shared &	operator= (device_shared &&)=delete
void	destroy (gfx_device const *vulkanDevice)
glyph_atlas_info	allocate_rect (extent2 draw_extent, scale2 draw_scale) noexcept
	Allocate an glyph in the atlas.
void	drawInCommandBuffer (vk::CommandBuffer const &commandBuffer)
void	uploadStagingPixmapToAtlas (glyph_atlas_info const &location)
	Once drawing in the staging pixmap is completed, you can upload it to the atlas.
void	prepareStagingPixmapForDrawing ()
	This will transition the staging texture to 'general' for writing by the CPU.
void	prepare_atlas_for_rendering ()
	This will transition the atlas to 'shader-read'.
bool	place_vertices (vector_span< vertex > &vertices, aarectangle const &clipping_rectangle, quad const &box, hi::font const &font, glyph_id glyph, quad_color colors) noexcept
	Place vertices for a single glyph.

Data Fields
gfx_device const &	device
vk::ShaderModule	vertexShaderModule
vk::ShaderModule	fragmentShaderModule
specialization_constants	specializationConstants
std::vector< vk::SpecializationMapEntry >	fragmentShaderSpecializationMapEntries
vk::SpecializationInfo	fragmentShaderSpecializationInfo
std::vector< vk::PipelineShaderStageCreateInfo >	shaderStages
texture_map	stagingTexture
std::vector< texture_map >	atlasTextures
std::array< vk::DescriptorImageInfo, atlasMaximumNrImages >	atlasDescriptorImageInfos
vk::Sampler	atlasSampler
vk::DescriptorImageInfo	atlasSamplerDescriptorImageInfo
point3	atlas_allocation_position = {}
int	atlasAllocationMaxHeight = 0
	During allocation on a row, we keep track of the tallest glyph.

Static Public Attributes
static constexpr int	atlasImageWidth = 256
static constexpr int	atlasImageHeight = 256
static constexpr int	atlasMaximumNrImages = 128
static constexpr int	stagingImageWidth = 64
static constexpr int	stagingImageHeight = 64
static constexpr float	atlasTextureCoordinateMultiplier = 1.0f / atlasImageWidth
static constexpr float	drawfontSize = 28.0f
static constexpr float	drawBorder = sdf_r8::max_distance
static constexpr float	scaledDrawBorder = drawBorder / drawfontSize

Member Function Documentation

allocate_rect()

glyph_atlas_info hi::v1::gfx_pipeline_SDF::device_shared::allocate_rect ( extent2 draw_extent, scale2 draw_scale )

inlinenoexcept

Allocate an glyph in the atlas.

This may allocate an atlas texture, up to atlasMaximumNrImages.

destroy()

void hi::v1::gfx_pipeline_SDF::device_shared::destroy ( gfx_device const * vulkanDevice )

inline

Deallocate vulkan resources. This is called in the destructor of gfx_device, therefor we can not use our gfx_device from this point on.

place_vertices()

bool hi::v1::gfx_pipeline_SDF::device_shared::place_vertices ( vector_span< vertex > & vertices, aarectangle const & clipping_rectangle, quad const & box, hi::font const & font, glyph_id glyph, quad_color colors )

inlinenoexcept

Place vertices for a single glyph.

Parameters

vertices	The list of vertices to add to.
clipping_rectangle	The rectangle to clip the glyph.
box	The rectangle of the glyph in window coordinates. The box's size must be the size of the glyph's bounding box times glyph_size.
glyphs	The font-id, composed-glyphs to render
colors	The color of each corner of the glyph.

Returns

True is atlas was updated.

prepare_atlas_for_rendering()

void hi::v1::gfx_pipeline_SDF::device_shared::prepare_atlas_for_rendering ( )

inline

This will transition the atlas to 'shader-read'.

prepareStagingPixmapForDrawing()

void hi::v1::gfx_pipeline_SDF::device_shared::prepareStagingPixmapForDrawing ( )

inline

This will transition the staging texture to 'general' for writing by the CPU.

uploadStagingPixmapToAtlas()

void hi::v1::gfx_pipeline_SDF::device_shared::uploadStagingPixmapToAtlas ( glyph_atlas_info const & location )

inline

Once drawing in the staging pixmap is completed, you can upload it to the atlas.

This will transition the stating texture to 'source' and the atlas to 'destination'.

Field Documentation

atlasAllocationMaxHeight

int hi::v1::gfx_pipeline_SDF::device_shared::atlasAllocationMaxHeight = 0

During allocation on a row, we keep track of the tallest glyph.

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

• hikogui/src/hikogui/GFX/gfx_pipeline_SDF_vulkan.hpp
• hikogui/src/hikogui/GFX/gfx_pipeline_SDF_vulkan_impl.hpp