mirror of
https://github.com/wheremyfoodat/Panda3DS.git
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91 lines
3 KiB
C++
91 lines
3 KiB
C++
#pragma once
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#include <Metal/Metal.hpp>
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#include <array>
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#include <string>
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#include "boost/icl/interval.hpp"
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#include "helpers.hpp"
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#include "math_util.hpp"
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#include "objc_helper.hpp"
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#include "opengl.hpp"
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#include "pica_to_mtl.hpp"
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template <typename T>
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using Interval = boost::icl::right_open_interval<T>;
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namespace Metal {
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template <typename Format_t>
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struct RenderTarget {
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MTL::Device* device;
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u32 location;
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Format_t format;
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OpenGL::uvec2 size;
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bool valid;
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// Range of VRAM taken up by buffer
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Interval<u32> range;
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MTL::Texture* texture = nullptr;
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RenderTarget() : valid(false) {}
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RenderTarget(MTL::Device* dev, u32 loc, Format_t format, u32 x, u32 y, bool valid = true)
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: device(dev), location(loc), format(format), size({x, y}), valid(valid) {
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u64 endLoc = (u64)loc + sizeInBytes();
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// Check if start and end are valid here
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range = Interval<u32>(loc, (u32)endLoc);
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}
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Math::Rect<u32> getSubRect(u32 inputAddress, u32 width, u32 height) {
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const u32 startOffset = (inputAddress - location) / sizePerPixel(format);
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const u32 x0 = (startOffset % (size.x() * 8)) / 8;
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const u32 y0 = (startOffset / (size.x() * 8)) * 8;
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return Math::Rect<u32>{x0, size.y() - y0, x0 + width, size.y() - height - y0};
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}
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// For 2 textures to "match" we only care about their locations, formats, and dimensions to match
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// For other things, such as filtering mode, etc, we can just switch the attributes of the cached texture
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bool matches(RenderTarget& other) {
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return location == other.location && format == other.format && size.x() == other.size.x() && size.y() == other.size.y();
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}
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void allocate() {
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MTL::PixelFormat pixelFormat = MTL::PixelFormatInvalid;
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if (std::is_same<Format_t, PICA::ColorFmt>::value) {
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pixelFormat = PICA::toMTLPixelFormatColor((PICA::ColorFmt)format);
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} else if (std::is_same<Format_t, PICA::DepthFmt>::value) {
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pixelFormat = PICA::toMTLPixelFormatDepth((PICA::DepthFmt)format);
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} else {
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Helpers::panic("Invalid format type");
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}
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MTL::TextureDescriptor* descriptor = MTL::TextureDescriptor::alloc()->init();
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descriptor->setTextureType(MTL::TextureType2D);
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descriptor->setPixelFormat(pixelFormat);
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descriptor->setWidth(size.u());
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descriptor->setHeight(size.v());
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descriptor->setUsage(MTL::TextureUsageRenderTarget | MTL::TextureUsageShaderRead);
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descriptor->setStorageMode(MTL::StorageModePrivate);
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texture = device->newTexture(descriptor);
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texture->setLabel(toNSString(
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std::string(std::is_same<Format_t, PICA::ColorFmt>::value ? "Color" : "Depth") + " render target " + std::to_string(size.u()) + "x" +
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std::to_string(size.v())
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));
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descriptor->release();
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}
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void free() {
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valid = false;
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if (texture) {
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texture->release();
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}
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}
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u64 sizeInBytes() { return (size_t)size.x() * (size_t)size.y() * PICA::sizePerPixel(format); }
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};
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using ColorRenderTarget = RenderTarget<PICA::ColorFmt>;
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using DepthStencilRenderTarget = RenderTarget<PICA::DepthFmt>;
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} // namespace Metal
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