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| Original file line number | Diff line number | Diff line change |
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| //---------------------------------------------------------------------------- | ||
| // Copyright Persistant Studios, SARL. All Rights Reserved. | ||
| // https://www.popcornfx.com/terms-and-conditions/ | ||
| //---------------------------------------------------------------------------- | ||
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| #include <scenesrg.srgi> | ||
| #include <viewsrg.srgi> | ||
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| #define PK_LIT_SHADER | ||
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| #include "../../Common/MaterialSrg.azsli" | ||
| #include "../../Common/LightingHelper.azsli" | ||
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| // Billboarding shader: | ||
| #include "../../Common/ComputeBillboardVertex.azsli" | ||
| // Material: | ||
| #include "../../Common/RendererFeatures.azsli" | ||
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| option bool o_hasDiffuse = false; | ||
| option bool o_hasEmissive = true; | ||
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| struct VertexInput | ||
| { | ||
| float2 m_uv : POSITION; | ||
| uint m_instanceID : SV_InstanceID; | ||
| }; | ||
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| struct VSOutput | ||
| { | ||
| precise float4 m_position : SV_Position; | ||
| float3 m_normal: NORMAL; | ||
| float3 m_tangent : TANGENT; | ||
| float3 m_bitangent : BITANGENT; | ||
| float3 m_worldPosition : UV0; | ||
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| float2 m_texCoord0 : UV1; | ||
| float2 m_texCoord1 : UV2; | ||
| float m_texFrameLerp : UV3; | ||
| float4 m_diffuseColor : COLOR0; | ||
| float4 m_emissiveColor : COLOR1; | ||
| float m_alphaCursor : UV4; | ||
| float4 m_clipPosition : UV5; | ||
| }; | ||
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| VSOutput BillboardVS(VertexInput input) | ||
| { | ||
| VSOutput output; | ||
| uint particleIdx = RendererSrg::m_indices[GetParticleId_Sliced(input.m_instanceID)]; | ||
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| // Billboarding outputs: | ||
| float3 vtxWorldPos; | ||
| float3 vtxNormal; | ||
| float4 vtxTangent; | ||
| float2 vtxUV0; | ||
| float2 vtxUV1; | ||
| float vtxTexFrameLerp; | ||
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| ComputeBillboardVertex(particleIdx, input.m_uv, vtxWorldPos, vtxNormal, vtxTangent, vtxUV0, vtxUV1, vtxTexFrameLerp); | ||
|
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| // TBN: | ||
| float3 vtxBitangent = cross(vtxNormal, vtxTangent.xyz) * vtxTangent.w; | ||
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| output.m_normal = vtxNormal; | ||
| output.m_tangent = vtxTangent.xyz; | ||
| output.m_bitangent = vtxBitangent; | ||
| output.m_worldPosition = vtxWorldPos; | ||
| output.m_position = mul(ViewSrg::m_viewProjectionMatrix, float4(vtxWorldPos, 1.0f)); | ||
| output.m_clipPosition = output.m_position; | ||
| output.m_texCoord0 = vtxUV0; | ||
|
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| // Atlas animation blending: | ||
| if (HasOneRendererFlags(Has_AnimBlend)) | ||
| { | ||
| output.m_texCoord1 = vtxUV1; | ||
| output.m_texFrameLerp = vtxTexFrameLerp; | ||
| } | ||
| else | ||
| { | ||
| output.m_texCoord1 = float2(0, 0); | ||
| output.m_texFrameLerp = 0; | ||
| } | ||
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| if (HasOneRendererFlags(Has_Emissive)) | ||
| output.m_emissiveColor = GetEmissiveParticleColor(particleIdx); | ||
| // Alpha remap: | ||
| output.m_alphaCursor = 0; | ||
| if (HasOneRendererFlags(Has_AlphaRemap)) | ||
| output.m_alphaCursor = RendererSrg::m_alphaCursors[particleIdx]; | ||
|
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| // Get additional fields: | ||
| if (o_hasDiffuse) | ||
| { | ||
| output.m_diffuseColor = RendererSrg::m_diffuseColors[particleIdx]; | ||
| } | ||
| if (o_hasEmissive) | ||
| { | ||
| output.m_emissiveColor = GetEmissiveParticleColor(particleIdx); | ||
| } | ||
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| return output; | ||
| } | ||
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| ForwardPassOutput BillboardFS(VSOutput input, bool isFrontFace : SV_IsFrontFace) | ||
| { | ||
| float2 texCoord0 = input.m_texCoord0; | ||
| float2 texCoord1 = input.m_texCoord1; | ||
|
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| // Motion vectors: | ||
| GetMotionVectorsUV(texCoord0, texCoord1, input.m_texFrameLerp); | ||
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| float4 diffuseColor = float4(0, 0, 0, 0); | ||
| float4 emissiveColor = float4(0, 0, 0, 0); | ||
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| if (o_hasDiffuse) | ||
| { | ||
| diffuseColor = GetDiffuseColor(input.m_texCoord0); | ||
| if (HasOneRendererFlags(Has_AlphaRemap)) | ||
| diffuseColor = ApplyAlphaRemap(diffuseColor, input.m_alphaCursor); | ||
| diffuseColor *= input.m_diffuseColor; | ||
| diffuseColor.a = clamp(diffuseColor.a, 0, 1); | ||
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| ApplyOpaqueMasked(diffuseColor.a); | ||
| } | ||
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| if (o_hasEmissive) | ||
| { | ||
| emissiveColor = GetEmissiveColor(input.m_texCoord0); | ||
| emissiveColor *= input.m_emissiveColor; | ||
| } | ||
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| float3 vertexNormal = normalize(isFrontFace ? input.m_normal : -input.m_normal); | ||
| float3 normal = vertexNormal; | ||
| const float3 tangent = normalize(input.m_tangent); | ||
| const float3 bitangent = normalize(input.m_bitangent); | ||
|
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| // Normal map: | ||
| if (HasOneRendererFlags(Has_NormalMap)) | ||
| { | ||
| float2 texNormal = MaterialSrg::m_normalMap.Sample(MaterialSrg::m_sampler, input.m_texCoord0).xy; | ||
| if (HasOneRendererFlags(Has_AnimBlend)) | ||
| { | ||
| // Lerping between normal maps is not the correct way to handle that | ||
| // We should use ReorientTangentSpaceNormal instead | ||
| float2 texNormal1 = MaterialSrg::m_normalMap.Sample(MaterialSrg::m_sampler, input.m_texCoord1).xy; | ||
| texNormal = lerp(texNormal, texNormal1, input.m_texFrameLerp); | ||
| } | ||
| normal = GetWorldSpaceNormal(texNormal, normal, tangent, bitangent); | ||
| } | ||
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| if (HasOneRendererFlags(Has_Soft)) | ||
| { | ||
| float3 clipPos = input.m_clipPosition.xyz / input.m_clipPosition.w; | ||
| float fade = GetSoftParticleFade(clipPos); | ||
| diffuseColor *= fade; | ||
| emissiveColor *= fade; | ||
| } | ||
|
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| // Compute lighting: | ||
| return ComputeParticleLighting( input.m_worldPosition, | ||
| input.m_position, | ||
| vertexNormal, | ||
| normal, | ||
| tangent, | ||
| bitangent, | ||
| diffuseColor, | ||
| emissiveColor.rgb * emissiveColor.a); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| { | ||
| "Source" : "BillboardLit.azsl", | ||
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| "DepthStencilState" : | ||
| { | ||
| "Depth" : | ||
| { | ||
| "Enable" : true, | ||
| "CompareFunc" : "GreaterEqual" | ||
| }, | ||
| "Stencil" : | ||
| { | ||
| "Enable" : true, | ||
| "ReadMask" : "0x00", | ||
| "WriteMask" : "0xFF", | ||
| "FrontFace" : | ||
| { | ||
| "Func" : "Always", | ||
| "DepthFailOp" : "Keep", | ||
| "FailOp" : "Keep", | ||
| "PassOp" : "Replace" | ||
| } | ||
| } | ||
| }, | ||
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| "RasterState" : | ||
| { | ||
| "CullMode" : "None" | ||
| }, | ||
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| "GlobalTargetBlendState" : | ||
| { | ||
| "Enable" : true, | ||
| "BlendSource" : "One", | ||
| "BlendDest" : "AlphaSourceInverse", | ||
| "BlendAlphaOp" : "Add" | ||
| }, | ||
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| "ProgramSettings": | ||
| { | ||
| "EntryPoints": | ||
| [ | ||
| { | ||
| "name": "BillboardVS", | ||
| "type": "Vertex" | ||
| }, | ||
| { | ||
| "name": "BillboardFS", | ||
| "type": "Fragment" | ||
| } | ||
| ] | ||
| }, | ||
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| "DrawList" : "transparent" | ||
| } |
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