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Replace the MAX_BUFFER_AGE const generic with a runtime enum

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Having a const generic for that didn't turn to be a good API.
Also made the C++ side more difficult

(Also renamed buffer_stride to pixel_stride)

Closes #2135
This commit is contained in:
Olivier Goffart 2023-02-08 14:44:01 +01:00 • committed by GitHub
parent 05e00fe057
commit a19efc30db
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 134 additions and 148 deletions
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23
api/cpp/include/slint_platform.h
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@ -194,12 +194,6 @@ public:
/// To be used as a template parameter of the WindowAdapter.
///
/// Use the render() function to render in a buffer
///
/// The MAX_BUFFER_AGE parameter specifies how many buffers are being re-used.
/// This means that the buffer passed to the render functions still contains a rendering of
/// the window that was refreshed as least that amount of frame ago.
/// It will impact how much of the screen needs to be redrawn.
template<int MAX_BUFFER_AGE = 0>
class SoftwareRenderer
{
mutable cbindgen_private::SoftwareRendererOpaque inner;
@ -208,7 +202,7 @@ public:
virtual ~SoftwareRenderer()
{
if (inner) {
cbindgen_private::slint_software_renderer_drop(MAX_BUFFER_AGE, inner);
cbindgen_private::slint_software_renderer_drop(inner);
}
};
SoftwareRenderer(const SoftwareRenderer &) = delete;
@ -216,18 +210,18 @@ public:
SoftwareRenderer() = default;
/// \private
void init(const cbindgen_private::WindowAdapterRcOpaque *win) const
void init(const cbindgen_private::WindowAdapterRcOpaque *win, int max_buffer_age) const
{
if (inner) {
cbindgen_private::slint_software_renderer_drop(MAX_BUFFER_AGE, inner);
cbindgen_private::slint_software_renderer_drop(inner);
}
inner = cbindgen_private::slint_software_renderer_new(MAX_BUFFER_AGE, win);
inner = cbindgen_private::slint_software_renderer_new(max_buffer_age, win);
}
/// \private
cbindgen_private::RendererPtr renderer_handle() const
{
return cbindgen_private::slint_software_renderer_handle(MAX_BUFFER_AGE, inner);
return cbindgen_private::slint_software_renderer_handle(inner);
}
/// Render the window scene into a pixel buffer
@ -236,10 +230,11 @@ public:
///
/// The stride is the amount of pixels between two lines in the buffer.
/// It is must be at least as large as the width of the window.
void render(std::span<slint::cbindgen_private::Rgb8Pixel> buffer, std::size_t stride) const
void render(std::span<slint::cbindgen_private::Rgb8Pixel> buffer,
std::size_t pixel_stride) const
{
cbindgen_private::slint_software_renderer_render_rgb8(MAX_BUFFER_AGE, inner, buffer.data(),
buffer.size(), stride);
cbindgen_private::slint_software_renderer_render_rgb8(inner, buffer.data(), buffer.size(),
pixel_stride);
}
};