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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include "common/assert.h"
#include "video_core/framebuffer_config.h"
namespace Tegra {
std::span<const FramebufferConfig> FilterLayerStack(
std::span<const FramebufferConfig> layers, Service::Nvnflinger::LayerStackId stack,
std::vector<FramebufferConfig>& scratch) {
const u32 bit = Service::Nvnflinger::LayerStackBit(stack);
if (std::ranges::all_of(layers,
[bit](const auto& layer) { return (layer.layer_stack_mask & bit) != 0; }))
return layers;
scratch.clear();
for (const auto& layer : layers) {
if ((layer.layer_stack_mask & bit) != 0) {
scratch.push_back(layer);
}
}
return scratch;
}
Common::Rectangle<f32> NormalizeCrop(const FramebufferConfig& framebuffer, u32 texture_width,
u32 texture_height) {
f32 left, top, right, bottom;
if (!framebuffer.crop_rect.IsEmpty()) {
// If crop rectangle is not empty, apply properties from rectangle.
left = static_cast<f32>(framebuffer.crop_rect.left);
top = static_cast<f32>(framebuffer.crop_rect.top);
right = static_cast<f32>(framebuffer.crop_rect.right);
bottom = static_cast<f32>(framebuffer.crop_rect.bottom);
} else {
// Otherwise, fall back to framebuffer dimensions.
left = 0;
top = 0;
right = static_cast<f32>(framebuffer.width);
bottom = static_cast<f32>(framebuffer.height);
}
// Apply transformation flags.
auto framebuffer_transform_flags = framebuffer.transform_flags;
if (True(framebuffer_transform_flags & Service::android::BufferTransformFlags::FlipH)) {
// Switch left and right.
std::swap(left, right);
}
if (True(framebuffer_transform_flags & Service::android::BufferTransformFlags::FlipV)) {
// Switch top and bottom.
std::swap(top, bottom);
}
framebuffer_transform_flags &= ~Service::android::BufferTransformFlags::FlipH;
framebuffer_transform_flags &= ~Service::android::BufferTransformFlags::FlipV;
if (True(framebuffer_transform_flags)) {
UNIMPLEMENTED_MSG("Unsupported framebuffer_transform_flags={}",
static_cast<u32>(framebuffer_transform_flags));
}
// Normalize coordinate space.
left /= static_cast<f32>(texture_width);
top /= static_cast<f32>(texture_height);
right /= static_cast<f32>(texture_width);
bottom /= static_cast<f32>(texture_height);
return Common::Rectangle<f32>(left, top, right, bottom);
}
} // namespace Tegra
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