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PE: Fix problem with Procedural Texture Sample flicker if using scaled UVs.

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This commit is contained in:
Preben Eriksen
2023-12-25 12:08:34 +01:00
parent 4e34524a08
commit 35becc674a
1 changed files with 10 additions and 10 deletions
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20
Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Textures.cpp
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@@ -584,7 +584,7 @@ void MaterialGenerator::ProcessGroupTextures(Box* box, Node* node, Value& value)
{
// Procedural Texture Sample
textureBox->Cache = writeLocal(Value::InitForZero(ValueType::Float4), node);
createGradients(node);
// createGradients(node); //PE: Not needed should always use the scaled or not scaled uv.
auto proceduralSample = String::Format(TEXT(
" {{\n"
" float3 weights;\n"
@@ -613,19 +613,19 @@ void MaterialGenerator::ProcessGroupTextures(Box* box, Node* node, Value& value)
" uv1 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), vertex1)) * 43758.5453);\n"
" uv2 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), vertex2)) * 43758.5453);\n"
" uv3 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), vertex3)) * 43758.5453);\n"
" float4 tex1 = {1}.SampleGrad({4}, uv1, {2}, {3}, {6}) * weights.x;\n"
" float4 tex2 = {1}.SampleGrad({4}, uv2, {2}, {3}, {6}) * weights.y;\n"
" float4 tex3 = {1}.SampleGrad({4}, uv3, {2}, {3}, {6}) * weights.z;\n"
" {5} = tex1 + tex2 + tex3;\n"
" float2 fdx = ddx({0});\n"
" float2 fdy = ddy({0});\n"
" float4 tex1 = {1}.SampleGrad({2}, uv1, fdx, fdy, {4}) * weights.x;\n"
" float4 tex2 = {1}.SampleGrad({2}, uv2, fdx, fdy, {4}) * weights.y;\n"
" float4 tex3 = {1}.SampleGrad({2}, uv3, fdx, fdy, {4}) * weights.z;\n"
" {3} = tex1 + tex2 + tex3;\n"
" }}\n"
),
uvs.Value, // {0}
texture.Value, // {1}
_ddx.Value, // {2}
_ddy.Value, // {3}
samplerName, // {4}
textureBox->Cache.Value, // {5}
offset.Value // {6}
samplerName, // {2}
textureBox->Cache.Value, // {3}
offset.Value // {4}
);
_writer.Write(*proceduralSample);