MiMoEngine ASM: x86-64 MASM汇编+C混合架构游戏引擎

核心热路径(数学/内存/字符串/性能分析)用MASM汇编(SSE/AVX2)
外围系统(窗口/渲染/ECS/音频/UI/脚本)用C语言
含自研编辑器、VisualScript积木编程、中文渲染(glyph_atlas)

Engine/Rendering/graphics_device.c

@@ -0,0 +1,98 @@
+#include "graphics_device.h"
+#include <stdlib.h>
+#include <string.h>
+
+GraphicsDevice* graphics_device_create(void) {
+    return (GraphicsDevice*)calloc(1, sizeof(GraphicsDevice));
+}
+
+void graphics_device_destroy(GraphicsDevice* d) {
+    if (!d) return;
+    if (d->depth_stencil) d->depth_stencil->lpVtbl->Release(d->depth_stencil);
+    if (d->depth_texture) d->depth_texture->lpVtbl->Release(d->depth_texture);
+    if (d->render_target) d->render_target->lpVtbl->Release(d->render_target);
+    if (d->swap_chain) d->swap_chain->lpVtbl->Release(d->swap_chain);
+    if (d->context) d->context->lpVtbl->Release(d->context);
+    if (d->device) d->device->lpVtbl->Release(d->device);
+    free(d);
+}
+
+static int create_depth_stencil(GraphicsDevice* d, uint32_t w, uint32_t h) {
+    D3D11_TEXTURE2D_DESC desc = {0};
+    desc.Width = w; desc.Height = h;
+    desc.MipLevels = 1; desc.ArraySize = 1;
+    desc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
+    desc.SampleDesc.Count = 1;
+    desc.Usage = D3D11_USAGE_DEFAULT;
+    desc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
+    HRESULT hr = d->device->lpVtbl->CreateTexture2D(d->device, &desc, NULL, &d->depth_texture);
+    if (FAILED(hr)) return 0;
+    D3D11_DEPTH_STENCIL_VIEW_DESC dsv = {0};
+    dsv.Format = desc.Format;
+    dsv.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
+    hr = d->device->lpVtbl->CreateDepthStencilView(d->device, (ID3D11Resource*)d->depth_texture, &dsv, &d->depth_stencil);
+    return SUCCEEDED(hr);
+}
+
+int graphics_device_init(GraphicsDevice* d, void* hwnd, uint32_t w, uint32_t h, int vsync) {
+    d->width = w; d->height = h; d->vsync = vsync;
+    DXGI_SWAP_CHAIN_DESC scd = {0};
+    scd.BufferCount = 1;
+    scd.BufferDesc.Width = w;
+    scd.BufferDesc.Height = h;
+    scd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    scd.BufferDesc.RefreshRate.Numerator = 60;
+    scd.BufferDesc.RefreshRate.Denominator = 1;
+    scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    scd.OutputWindow = (HWND)hwnd;
+    scd.SampleDesc.Count = 1;
+    scd.Windowed = TRUE;
+    scd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+    D3D_FEATURE_LEVEL levels[] = {D3D_FEATURE_LEVEL_11_0};
+    UINT flags = 0;
+#ifdef _DEBUG
+    flags |= D3D11_CREATE_DEVICE_DEBUG;
+#endif
+    HRESULT hr = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, flags, levels, 1, D3D11_SDK_VERSION, &scd, &d->swap_chain, &d->device, NULL, &d->context);
+    if (FAILED(hr)) return 0;
+    ID3D11Texture2D* back_buffer = NULL;
+    d->swap_chain->lpVtbl->GetBuffer(d->swap_chain, 0, &IID_ID3D11Texture2D, (void**)&back_buffer);
+    d->device->lpVtbl->CreateRenderTargetView(d->device, (ID3D11Resource*)back_buffer, NULL, &d->render_target);
+    if (back_buffer) back_buffer->lpVtbl->Release(back_buffer);
+    create_depth_stencil(d, w, h);
+    d->context->lpVtbl->OMSetRenderTargets(d->context, 1, &d->render_target, d->depth_stencil);
+    D3D11_VIEWPORT vp = {0};
+    vp.Width = (float)w; vp.Height = (float)h;
+    vp.MaxDepth = 1.0f;
+    d->context->lpVtbl->RSSetViewports(d->context, 1, &vp);
+    return 1;
+}
+
+void graphics_device_resize(GraphicsDevice* d, uint32_t w, uint32_t h) {
+    if (w == 0 || h == 0) return;
+    d->context->lpVtbl->OMSetRenderTargets(d->context, 0, NULL, NULL);
+    if (d->render_target) { d->render_target->lpVtbl->Release(d->render_target); d->render_target = NULL; }
+    if (d->depth_stencil) { d->depth_stencil->lpVtbl->Release(d->depth_stencil); d->depth_stencil = NULL; }
+    if (d->depth_texture) { d->depth_texture->lpVtbl->Release(d->depth_texture); d->depth_texture = NULL; }
+    d->swap_chain->lpVtbl->ResizeBuffers(d->swap_chain, 0, w, h, DXGI_FORMAT_UNKNOWN, 0);
+    ID3D11Texture2D* back_buffer = NULL;
+    d->swap_chain->lpVtbl->GetBuffer(d->swap_chain, 0, &IID_ID3D11Texture2D, (void**)&back_buffer);
+    d->device->lpVtbl->CreateRenderTargetView(d->device, (ID3D11Resource*)back_buffer, NULL, &d->render_target);
+    if (back_buffer) back_buffer->lpVtbl->Release(back_buffer);
+    create_depth_stencil(d, w, h);
+    d->context->lpVtbl->OMSetRenderTargets(d->context, 1, &d->render_target, d->depth_stencil);
+    D3D11_VIEWPORT vp = {0};
+    vp.Width = (float)w; vp.Height = (float)h; vp.MaxDepth = 1.0f;
+    d->context->lpVtbl->RSSetViewports(d->context, 1, &vp);
+    d->width = w; d->height = h;
+}
+
+void graphics_device_clear(GraphicsDevice* d, float r, float g, float b, float a) {
+    float color[4] = {r, g, b, a};
+    d->context->lpVtbl->ClearRenderTargetView(d->context, d->render_target, color);
+    d->context->lpVtbl->ClearDepthStencilView(d->context, d->depth_stencil, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0);
+}
+
+void graphics_device_present(GraphicsDevice* d) {
+    d->swap_chain->lpVtbl->Present(d->swap_chain, d->vsync ? 1 : 0, 0);
+}