shadertoy 跳动的心

</pre>参考<a target=_blank href="http://blog.csdn.net/candycat1992/article/details/44040273">candycat博客【ShaderToy】跳动的心❤️</a></p><p></p><p>shadertoy上原代码如下：</p><p></p><p></p><pre name="code" class="plain">// Created by inigo quilez - iq/2013// License Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.void mainImage( out vec4 fragColor, in vec2 fragCoord ){vec2 p = (2.0*fragCoord-iResolution.xy)/min(iResolution.y,iResolution.x);p.y -= 0.25;    // background color    vec3 bcol = vec3(1.0,0.8,0.7-0.07*p.y)*(1.0-0.25*length(p));    // animate    float tt = mod(iGlobalTime,1.5)/1.5;    float ss = pow(tt,.2)*0.5 + 0.5;    ss = 1.0 + ss*0.5*sin(tt*6.2831*3.0 + p.y*0.5)*exp(-tt*4.0);    p *= vec2(0.5,1.5) + ss*vec2(0.5,-0.5);       // shape    float a = atan(p.x,p.y)/3.141593;    float r = length(p);    float h = abs(a);    float d = (13.0*h - 22.0*h*h + 10.0*h*h*h)/(6.0-5.0*h);// colorfloat s = 1.0-0.5*clamp(r/d,0.0,1.0);s = 0.75 + 0.75*p.x;s *= 1.0-0.25*r;s = 0.5 + 0.6*s;s *= 0.5+0.5*pow( 1.0-clamp(r/d, 0.0, 1.0 ), 0.1 );vec3 hcol = vec3(1.0,0.5*r,0.3)*s;    vec3 col = mix( bcol, hcol, smoothstep( -0.01, 0.01, d-r) );    fragColor = vec4(col,1.0);}

</pre><pre name="code" class="plain">然后将之转为hlsl，上效果图

<img src="http://img.blog.csdn.net/20160728085616421?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

这里我分别使用了direct9和direct11

代码如下：

dx11:

Texture2D tex0 <string uiname="Texture0";>;

SamplerState s0 <bool visible=false;string uiname="Sampler";>{    Filter = MIN_MAG_MIP_LINEAR;    AddressU = Clamp;    AddressV = Clamp;}; cbuffer cbPerDraw : register( b0 ){float4x4 tVP : VIEWPROJECTION;float4x4 tW : WORLD;float2 iResolution = float2(1.0,1.0);float iGlobalTime= 0.1;float4 cAmb <bool color=true;String uiname="Color";> = { 1.0f,1.0f,1.0f,1.0f };};struct VS_IN{float4 PosO : POSITION;float4 TexCd : TEXCOORD0;};struct vs2ps{    float4 PosWVP: SV_POSITION;    float4 TexCd: TEXCOORD0;};vs2ps VS(VS_IN input){    vs2ps output;    output.PosWVP  = mul(input.PosO,mul(tW,tVP));    output.TexCd = input.TexCd;    return output;}float4 PS(vs2ps In): SV_Target{   float2 p = (2.0*In.TexCd.xy-iResolution.xy)/min(iResolution.y,iResolution.x);p.y -= 0.25;    // background color    float3 bcol = float3(1.0,0.8,0.7-0.07*p.y)*(1.0-0.25*length(p));    // animate    float tt = fmod(iGlobalTime,1.5)/1.5;    float ss = pow(abs(tt),.2)*0.5 + 0.5;    ss = 1.0 + ss*0.5*sin(tt*6.2831*3.0 + p.y*0.5)*exp(-tt*4.0);    p *= float2(0.5,1.5) + ss*float2(0.5,-0.5);       // shape    float a = atan2(p.x,p.y)/3.141593;    float r = length(p);    float h = abs(a);    float d = (13.0*h - 22.0*h*h + 10.0*h*h*h)/(6.0-5.0*h);// colorfloat s = 1.0-0.5*clamp(r/d,0.0,1.0);s = 0.75 + 0.75*p.x;s *= 1.0-0.25*r;s = 0.5 + 0.6*s;s *= 0.5+0.5*pow( 1.0-clamp(r/d, 0.0, 1.0 ), 0.1 );float3 hcol = float3(1.0,0.5*r,0.3)*s;   float3 col =lerp( bcol, hcol, smoothstep( -0.01, 0.01, d-r) );  return float4(col,1.0);}technique10  {pass P0{SetVertexShader( CompileShader( vs_4_0, VS() ) );SetPixelShader( CompileShader( ps_4_0, PS() ) );}}

dx9:

//transformsfloat4x4 tW: WORLD;        //the models world matrixfloat4x4 tV: VIEW;         //view matrix as set via Renderer (EX9)float4x4 tP: PROJECTION;float4x4 tWVP: WORLDVIEWPROJECTION;float2 iResolution = float2(1.0,1.0);float iGlobalTime= 0.1;//texturetexture Tex <string uiname="Texture";>;sampler Samp = sampler_state    //sampler for doing the texture-lookup{    Texture   = (Tex);          //apply a texture to the sampler    MipFilter = LINEAR;         //sampler states    MinFilter = LINEAR;    MagFilter = LINEAR;};//texture transformation marked with semantic TEXTUREMATRIX to achieve symmetric transformationsfloat4x4 tTex: TEXTUREMATRIX <string uiname="Texture Transform";>;//the data structure: "vertexshader to pixelshader"//used as output data with the VS function//and as input data with the PS functionstruct vs2ps{    float4 Pos  : POSITION;    float2 TexCd : TEXCOORD0;};// --------------------------------------------------------------------------------------------------// VERTEXSHADERS// --------------------------------------------------------------------------------------------------vs2ps VS(    float4 PosO  : POSITION,    float4 TexCd : TEXCOORD0){    //declare output struct    vs2ps Out;    //transform position    Out.Pos = mul(PosO, tWVP);        //transform texturecoordinates    Out.TexCd = mul(TexCd, tTex);    return Out;}// --------------------------------------------------------------------------------------------------// PIXELSHADERS:// --------------------------------------------------------------------------------------------------float4 PS(vs2ps In): COLOR{   float2 p = (2.0*In.TexCd.xy-iResolution.xy)/min(iResolution.y,iResolution.x);p.y -= 0.25;    // background color    float3 bcol = float3(1.0,0.8,0.7-0.07*p.y)*(1.0-0.25*length(p));    // animate    float tt = fmod(iGlobalTime,1.5)/1.5;    float ss = pow(abs(tt),.2)*0.5 + 0.5;    ss = 1.0 + ss*0.5*sin(tt*6.2831*3.0 + p.y*0.5)*exp(-tt*4.0);    p *= float2(0.5,1.5) + ss*float2(0.5,-0.5);       // shape    float a = atan2(p.x,p.y)/3.141593;    float r = length(p);    float h = abs(a);    float d = (13.0*h - 22.0*h*h + 10.0*h*h*h)/(6.0-5.0*h);// colorfloat s = 1.0-0.5*clamp(r/d,0.0,1.0);s = 0.75 + 0.75*p.x;s *= 1.0-0.25*r;s = 0.5 + 0.6*s;s *= 0.5+0.5*pow( 1.0-clamp(r/d, 0.0, 1.0 ), 0.1 );float3 hcol = float3(1.0,0.5*r,0.3)*s;   float3 col =lerp( bcol, hcol, smoothstep( -0.01, 0.01, d-r) );  return float4(col,1.0);}// --------------------------------------------------------------------------------------------------// TECHNIQUES:// --------------------------------------------------------------------------------------------------technique star{    pass P0    {        //Wrap0 = U;  // useful when mesh is round like a sphere        VertexShader = compile vs_1_1 VS();        PixelShader  = compile ps_3_0 PS();    }}technique TFixedFunction{    pass P0    {        //transforms        WorldTransform[0]   = (tW);        ViewTransform       = (tV);        ProjectionTransform = (tP);        //texturing        Sampler[0] = (Samp);        TextureTransform[0] = (tTex);        TexCoordIndex[0] = 0;        TextureTransformFlags[0] = COUNT2;        //Wrap0 = U;  // useful when mesh is round like a sphere                Lighting       = FALSE;        //shaders        VertexShader = NULL;        PixelShader  = NULL;    }}

screengif居然也带水印了

就酱

最后感谢candycat提供思路