摘要： 1、inputLayoutD3D11_INPUT_ELEMENT_DESC meshLayout[] = { {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0}, {"NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0}, {"TEXCOORD0", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 24 阅读全文

摘要： 例程来自于DXSDK sample——simpleBezier11原始顶点64个，float3格式，分为4个quad（平均每个Quad有16个控制点）// Control point for a Bezier patch struct BEZIER_CONTROL_POINT { float m_vPosition[3]; }; // Simple Bezier patch for a Mobius strip // 4 patches with 16 control points each const BEZIER_CONTROL_POINT g_... 阅读全文

摘要： （参照例子DXSDK sample：DynamicShaderLinkage11）一、preprocessor实现shader静态分支的经典方法，代码示例如下shader中(如果显卡不支持DX11，则STATIC_PERMUTE为True)：#if !defined( STATIC_PERMUTE ) iBaseLight g_abstractAmbientLighting; ... iBaseMaterial g_abstractMaterial;#else ... #define g_abstractAmbientLighting g_ambientL... 阅读全文

摘要： 例子见：Microsoft DirectX SDK basic compute11shader代码：struct BufType{ int i; float f;};StructuredBuffer<BufType> Buffer0 : register(t0);StructuredBuffer<BufType> Buffer1 : register(t1);RWStructuredBuffer<BufType> BufferOut : register(u0);[numthreads(1, 1, 1)]void CSMain( uint3 DTid : S 阅读全文

摘要： Depth Buffer 1、Learning to Love your Z-bufferIntroductionOne of the more common OpenGL programming problems that I see concerns the poor precision of the Z buffer.Many of the early 3D adaptors for the PC have a 16 bit Z buffer, some others have 24 bits - and the very best have 32 bits. If y... 阅读全文

摘要： 例子见Nvidia DX10 sdk 《Stencil Routed KBuffer》主要实现：第一遍正常渲染，获得Z最小的一层深度值，第二层将第一层深度值作为ShaderResourceView传入，若场景的Z小于等于第一层深度，则discard，这样获得第二层深度值；后面以此类推。// tDepthBuffer为上一层深度, IN.HPosition为屏幕坐标 DepthColorOutput DepthPeelPS ( Geometry_VSOut IN ) { DepthColorOutput output = (DepthColorO... 阅读全文

摘要： 一、基础技术 将光源作为相机，渲染场景，将lightWorldViewProjectPos——处于光源相机透视坐标系下的 z/w 值写入深度图中 注意此时光源相机的projectMatrix应为： D3DXMatrixPerspectiveFovLH(&mLightProjection, D3DX_PI / 2, 1, 0.01, 4000); 采用正常相机，利用深度图再次渲染场景。 将此... 阅读全文

摘要： from cywater：传统Z-Test其实是发生在PS之后的，因此仅仅依靠Z-Test并不能加快多少渲染速度。而EZC则发生在光栅化之后，调用PS之前。EZC会提前对深度进行比较，如果测试通过(Z-Func)，则执行PS，否则跳过此片段/像素(fragment/pixel)。不过要注意的是，在PS中不能修改深度值，否则EZC会被禁用。这样，在整个流水线阶段，深度比较发生了2次，一次是EZC，一次是传统Z-Test（注: 区别可能在于EZC无法写入深度）。除了利用EZC帮助传统Z-Test加速之外（硬件自动调用，我称其为隐式用法），目前还有2个显示引申用法：一个类似于Deferred Sha 阅读全文

摘要： Depth Buffer 1、Learning to Love your Z-bufferIntroductionOne of the more common OpenGL programming problems that I see concerns the poor precision of the Z buffer.Many of the early 3D adaptors for the PC have a 16 bit Z buffer, some others have 24 bits - and the very best have 32 bits. If you are lu 阅读全文

摘要： 1、It is expected that graphics hardware will have a small number of fixed vector locations for passing vertex inputs. Therefore, the OpenGL Shading language defines each non-matrix input variable as taking up one such vector location. There is an implementation dependent limit on the number of locat 阅读全文