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Merge pull request #719 from rextimmy/dxtnm-parallax-fix

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Fix to allow parallax mapping with dxtnm textures via the red channel.
This commit is contained in:
Areloch 2015-08-27 23:59:20 -05:00
commit 95ab3a33a5
5 changed files with 52 additions and 8 deletions
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15
Templates/Empty/game/shaders/common/torque.hlsl
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@ -151,6 +151,21 @@ float2 parallaxOffset( sampler2D texMap, float2 texCoord, float3 negViewTS, floa
return offset;
}
/// Same as parallaxOffset but for dxtnm where depth is stored in the red channel instead of the alpha
float2 parallaxOffsetDxtnm(sampler2D texMap, float2 texCoord, float3 negViewTS, float depthScale)
{
float depth = tex2D(texMap, texCoord).r;
float2 offset = negViewTS.xy * (depth * depthScale);
for (int i = 0; i < PARALLAX_REFINE_STEPS; i++)
{
depth = (depth + tex2D(texMap, texCoord + offset).r) * 0.5;
offset = negViewTS.xy * (depth * depthScale);
}
return offset;
}
/// The maximum value for 16bit per component integer HDR encoding.
static const float HDR_RGB16_MAX = 100.0;

15
Templates/Full/game/shaders/common/torque.hlsl
View file

@ -151,6 +151,21 @@ float2 parallaxOffset( sampler2D texMap, float2 texCoord, float3 negViewTS, floa
return offset;
}
/// Same as parallaxOffset but for dxtnm where depth is stored in the red channel instead of the alpha
float2 parallaxOffsetDxtnm(sampler2D texMap, float2 texCoord, float3 negViewTS, float depthScale)
{
float depth = tex2D(texMap, texCoord).r;
float2 offset = negViewTS.xy * (depth * depthScale);
for (int i = 0; i < PARALLAX_REFINE_STEPS; i++)
{
depth = (depth + tex2D(texMap, texCoord + offset).r) * 0.5;
offset = negViewTS.xy * (depth * depthScale);
}
return offset;
}
/// The maximum value for 16bit per component integer HDR encoding.
static const float HDR_RGB16_MAX = 100.0;