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dev0
2025-11-28 23:13:44 +05:30
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physx/samples/sampleframework/media/shaders/vertex/particle_fog.cg Normal file
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#include <config.cg>
#include <globals.cg>
struct VertexOut
{
FragmentParameters params;
float4 screenSpacePosition : POSITION;
float pointSize : PSIZE;
};
BEGIN_CBUFFER(cbParticlesFog)
CONST_TYPE float windowWidth;
END_CBUFFER(cbParticlesFog)
VertexOut vmain(__in(float4, localSpacePosition, POSITION)
__in_opt(float3, localSpaceNormal, NORMAL)
__in_opt(float4, localSpaceTangent, SEMANTIC_TANGENT)
__in_opt(float4, vertexTexcoord0, TEXCOORD0)
__in_opt(float4, vertexTexcoord1, TEXCOORD1)
__in_opt(float4, vertexTexcoord2, TEXCOORD2)
__in_opt(float4, vertexTexcoord3, TEXCOORD3)
__in_opt(half4, vertexColor, COLOR)
#if RENDERER_INSTANCED
, __in(float3, instanceOffset, SEMANTIC_INSTANCE_T)
, __in(float3, instanceNormalX, SEMANTIC_INSTANCE_X)
, __in(float3, instanceNormalY, SEMANTIC_INSTANCE_Y)
, __in(float3, instanceNormalZ, SEMANTIC_INSTANCE_Z)
#endif
)
{
VertexOut vout;
float4x4 modelMatrix;
#if RENDERER_INSTANCED
modelMatrix = transpose(float4x4(float4(instanceNormalX, 0), float4(instanceNormalY, 0), float4(instanceNormalZ, 0), float4(instanceOffset, 1)));
#else
modelMatrix = g_modelMatrix;
#endif
float4x4 mvm = mul(g_viewMatrix, modelMatrix);
float4x4 mvpm = mul(g_projMatrix, mvm);
vout.screenSpacePosition = mul(mvpm, localSpacePosition);
vout.params.worldSpacePosition = mul(g_modelMatrix, localSpacePosition).xyz;
vout.params.worldSpaceNormal = normalize(mul(modelMatrix, float4(localSpaceNormal, 0)).xyz);
vout.params.worldSpaceTangent = normalize(mul(g_modelMatrix, float4(localSpaceTangent.xyz, 0)).xyz);
vout.params.worldSpaceBinormal = cross(vout.params.worldSpaceNormal, vout.params.worldSpaceTangent) * localSpaceTangent.w;
vout.params.texcoord0 = vertexTexcoord0;
vout.params.texcoord1 = vertexTexcoord1;
vout.params.texcoord2 = vertexTexcoord2;
#if !defined (RENDERER_WIN8ARM)
vout.params.texcoord3 = vertexTexcoord3;
#endif
vout.params.color = vertexTexcoord1;
// saturate density range...
const float minDensity = 900;
const float maxDensity = 2500;
vout.params.color.r = sqrt(saturate((vout.params.color.r - minDensity) / (maxDensity-minDensity)));
vout.pointSize = (g_projMatrix[0][0] / vout.screenSpacePosition.w) * (windowWidth / 2.0) * 1.0;// * (1-0.5*vout.params.color.r);
return vout;
}