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render_dx9.cpp
Package: chap03.rar [view]
Upload User: gzqinmao
Upload Date: 2022-07-13
Package Size: 472k
Code Size: 2k
Category:
OpenGL program
Development Platform:
Visual C++
- #include "Gut.h"
- #include "render_data.h"
- bool InitResourceDX9(void)
- {
- // `获得Direct3D9设备`
- LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
- // `计算出镜头坐标系的转换矩阵`
- Matrix4x4 view_matrix = GutMatrixLookAtRH(g_eye, g_lookat, g_up);
- Matrix4x4 projection_matrix = GutMatrixPerspectiveRH_DirectX(60.0f, 1.0f, 1.0f, 100.0f);
- // `设置视角转换矩阵`
- device->SetTransform(D3DTS_PROJECTION, (D3DMATRIX *) &projection_matrix);
- // `设置镜头转换矩阵`
- device->SetTransform(D3DTS_VIEW, (D3DMATRIX *) &view_matrix);
- // `关闭光照`
- device->SetRenderState(D3DRS_LIGHTING, FALSE);
- return true;
- }
- bool ReleaseResourceDX9(void)
- {
- return true;
- }
- // `使用Direct3D9来绘图`
- void RenderFrameDX9(void)
- {
- LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
- device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0, 0, 0, 0), 1.0f, 0);
- // `开始下绘图指令`
- device->BeginScene();
- // `设置数据格式`
- device->SetFVF(D3DFVF_XYZ);
- // `旋转角度`
- static float angle = 0.0f;
- angle += 0.01f;
- // `设置旋转矩阵`
- Matrix4x4 world_matrix;
- world_matrix.RotateZ_Replace(angle);
- device->SetTransform(D3DTS_WORLD, (D3DMATRIX *) &world_matrix);
- // `画出金字塔的8条边线`
- device->DrawIndexedPrimitiveUP(
- D3DPT_LINELIST, // `指定所要画的基本图形种类 `
- 0, // `会使用的最小顶点编号, 事实上没太大用处.`
- 5, // `顶点数组里有几个顶点`
- 8, // `要画出几个基本图形`
- g_indices, // `索引数组`
- D3DFMT_INDEX16, // `索引数组的类型`
- g_vertices, // `顶点数组`
- sizeof(Vector4) // `顶点数组里每个顶点的大小`
- );
- // `声明所有的绘图指令都下完了`
- device->EndScene();
- // `把背景backbuffer显示出来`
- device->Present( NULL, NULL, NULL, NULL );
- }