EnderTheCoder
3caf18409b
- ra3.dx: D3D11 and D3D12 presentation backends (runtime HLSL via d3dcompiler); 2D image blit and the GPU heightfield terrain raymarch, with the corner minimap/FPS overlays. Non-Windows builds link a null fallback. - ra3.display: preferred backend plus ordered fallback (Vulkan/D3D11/D3D12/SDL); menu gains a Renderer option and the CLI gains --dx11/--dx12/--sdl, which the render command now honours too. - vendor libenderlog (MIT): every run writes openra3.log next to the exe and archives the previous run's log; records at warn and above carry a call stack (native fallback, since libc++ has no <stacktrace>). - Windows crash reporter writes openra3_crash.log (faulting module + backtrace); D3D/DXGI diagnostics are routed through the logger.
35 lines
1.2 KiB
HLSL
35 lines
1.2 KiB
HLSL
// 2D image blit for the Direct3D backends (the D3D port of scene.vert/scene.frag).
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//
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// The scene image is drawn as a single fullscreen triangle sampling the
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// software-rendered `ra3::render::image`. The constant buffer carries the
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// destination rectangle in window-normalized coordinates (y down), so the map
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// is letterboxed rather than stretched. D3D clip space has +Y up, so the vertex
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// position flips Y relative to the Vulkan shader (which relies on Vulkan's
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// +Y-down clip space); the sampled UVs and the image's top-left origin are
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// unchanged.
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cbuffer RectCB : register(b0) {
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float4 rect; // xy = top-left (0..1), zw = size (0..1)
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};
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Texture2D scene_tex : register(t0);
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SamplerState scene_smp : register(s0);
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struct VSOut {
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float4 pos : SV_Position;
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float2 uv : TEXCOORD0;
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};
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VSOut VSMain(uint vertex_id : SV_VertexID) {
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float2 p = float2((vertex_id << 1) & 2, vertex_id & 2);
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VSOut o;
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o.uv = (p - rect.xy) / rect.zw;
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o.pos = float4(p.x * 2.0 - 1.0, 1.0 - p.y * 2.0, 0.0, 1.0);
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return o;
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}
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float4 PSMain(VSOut input) : SV_Target {
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if (input.uv.x < 0.0 || input.uv.x > 1.0 || input.uv.y < 0.0 || input.uv.y > 1.0) discard;
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return scene_tex.Sample(scene_smp, input.uv);
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}
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