class Demo

Defined at line 13 of file ../../src/ui/examples/escher/common/demo.h

Base class for Escher demos.

Public Members

static const uint32_t kMaxOutstandingFrames

void Demo (escher::EscherWeakPtr escher, const char * name)

Defined at line 20 of file ../../src/ui/examples/escher/common/demo.cc

void ~Demo ()

Defined at line 23 of file ../../src/ui/examples/escher/common/demo.cc

bool HandleKeyPress (std::string key)

|key| must contain either a single alpha-numeric character (uppercase

only), or one of the special values "ESCAPE", "SPACE", and "RETURN".

Return true if the key-press was handled, and false otherwise.

Defined at line 25 of file ../../src/ui/examples/escher/common/demo.cc

void BeginTouch (uint64_t touch_id, double x_position, double y_position)

Begin a touch. Only one touch can have the specified |touch_id| at any

given time (it is guaranteed to not be reused until EndTouch() is called).

Defined at line 28 of file ../../src/ui/examples/escher/common/demo.h

void ContinueTouch (uint64_t touch_id, const double * x_positions, const double * y_positions, size_t position_count)

Continue a touch. Multiple positions may be aggregated since the last time

that BeginTouch()/ContinueTouch() were called; the number of positions is

provided by |position_count| which is guaranteed to be >= 1. If multiple

positions are aggregated, they are provided in order of occurrence.

Defined at line 33 of file ../../src/ui/examples/escher/common/demo.h

void DrawFrame (const escher::FramePtr & frame, const escher::ImagePtr & output_image, const escher::SemaphorePtr & framebuffer_acquired)

void EndTouch (uint64_t touch_id, double x_position, double y_position)

End a touch. Afterward, |touch_id| may appear in a subsequent call of

BeginTouch().

Defined at line 37 of file ../../src/ui/examples/escher/common/demo.h

const char * name ()

Defined at line 42 of file ../../src/ui/examples/escher/common/demo.h

escher::Escher * escher ()

Defined at line 43 of file ../../src/ui/examples/escher/common/demo.h

escher::EscherWeakPtr GetEscherWeakPtr ()

Defined at line 44 of file ../../src/ui/examples/escher/common/demo.h

const escher::VulkanContext & vulkan_context ()

Defined at line 45 of file ../../src/ui/examples/escher/common/demo.h

void RunOffscreenBenchmark (Demo * demo, uint32_t framebuffer_width, uint32_t framebuffer_height, vk::Format framebuffer_format, size_t frame_count)

Helper function that draws the specified number of frames to an offscreen buffer.

Defined at line 64 of file ../../src/ui/examples/escher/common/demo.cc

void ToggleTracing ()

Defined at line 50 of file ../../src/ui/examples/escher/common/demo.cc