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Scale quads after rendering to a screen texture instead of scaling directly. Fixes discontinuities in room editor and menu edges.

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This commit is contained in:
elasota
2020-04-25 16:35:34 -04:00
parent ea217285c0
commit 5bb6b074f0
11 changed files with 358 additions and 154 deletions
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22
ShaderSrc/DrawQuadPaletteP.hlsl
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@@ -17,28 +17,8 @@ float3 SamplePixel(int2 texCoord)
SDrawQuadPixelOutput PSMain(SDrawQuadPixelInput input)
{
float dx = ddx(input.texCoord.x);
float dy = ddy(input.texCoord.y);
float2 pixelTopLeftCoord = max(0.0, input.texCoord.xy - float2(dx, dy) * 0.5);
float2 pixelBottomRightCoord = pixelTopLeftCoord + min(float2(1.0, 1.0), float2(dx, dy));
int2 topLeftCoordInteger = int2(floor(pixelTopLeftCoord));
int2 bottomRightCoordInteger = int2(floor(pixelBottomRightCoord));
float2 interpolators = saturate((pixelBottomRightCoord - float2(bottomRightCoordInteger)) / float2(dx, dy));
float3 topLeftColor = SamplePixel(topLeftCoordInteger);
float3 topRightColor = SamplePixel(int2(bottomRightCoordInteger.x, topLeftCoordInteger.y));
float3 bottomLeftColor = SamplePixel(int2(topLeftCoordInteger.x, bottomRightCoordInteger.y));
float3 bottomRightColor = SamplePixel(bottomRightCoordInteger);
float3 topColor = (1.0 - interpolators.x) * topLeftColor + interpolators.x * topRightColor;
float3 bottomColor = (1.0 - interpolators.x) * bottomLeftColor + interpolators.x * bottomRightColor;
float3 interpolatedColor = (1.0 - interpolators.y) * topColor + interpolators.y * bottomColor;
SDrawQuadPixelOutput result;
result.color = float4(interpolatedColor, 1.0);
result.color = float4(SamplePixel(int2(floor(input.texCoord.xy))), 1.0);
return result;
}

6
ShaderSrc/DrawQuadRGBP.hlsl
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@@ -1,7 +1,7 @@
#include "DrawQuad.h"
SamplerState surfaceSampler : register(s0);
Texture2D<float> surfaceTexture : register(t0);
Texture2D<float3> surfaceTexture : register(t0);
struct SDrawQuadPixelOutput
{
@@ -10,9 +10,9 @@ struct SDrawQuadPixelOutput
SDrawQuadPixelOutput PSMain(SDrawQuadPixelInput input)
{
float surfaceColor = surfaceTexture.Sample(surfaceSampler, input.texCoord.xy).r;
float3 surfaceColor = surfaceTexture.Load(int3(input.texCoord.xy, 0)).rgb;
SDrawQuadPixelOutput result;
result.color = float4(surfaceColor, input.texCoord.x, input.texCoord.y, 1.0);
result.color = float4(surfaceColor, 1.0);
return result;
}

41
ShaderSrc/ScaleQuadP.hlsl Normal file
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@@ -0,0 +1,41 @@
#include "DrawQuad.h"
SamplerState surfaceSampler : register(s0);
Texture2D<float3> surfaceTexture : register(t0);
struct SDrawQuadPixelOutput
{
float4 color : SV_TARGET;
};
float3 SamplePixel(int2 coord)
{
return surfaceTexture.Load(int3(coord, 0)).rgb;
}
SDrawQuadPixelOutput PSMain(SDrawQuadPixelInput input)
{
float dx = ddx(input.texCoord.x);
float dy = ddy(input.texCoord.y);
float2 pixelTopLeftCoord = max(0.0, input.texCoord.xy - float2(dx, dy) * 0.5);
float2 pixelBottomRightCoord = pixelTopLeftCoord + min(float2(1.0, 1.0), float2(dx, dy));
int2 topLeftCoordInteger = int2(floor(pixelTopLeftCoord));
int2 bottomRightCoordInteger = int2(floor(pixelBottomRightCoord));
float2 interpolators = saturate((pixelBottomRightCoord - float2(bottomRightCoordInteger)) / float2(dx, dy));
float3 topLeftColor = SamplePixel(topLeftCoordInteger);
float3 topRightColor = SamplePixel(int2(bottomRightCoordInteger.x, topLeftCoordInteger.y));
float3 bottomLeftColor = SamplePixel(int2(topLeftCoordInteger.x, bottomRightCoordInteger.y));
float3 bottomRightColor = SamplePixel(bottomRightCoordInteger);
float3 topColor = (1.0 - interpolators.x) * topLeftColor + interpolators.x * topRightColor;
float3 bottomColor = (1.0 - interpolators.x) * bottomLeftColor + interpolators.x * bottomRightColor;
float3 interpolatedColor = (1.0 - interpolators.y) * topColor + interpolators.y * bottomColor;
SDrawQuadPixelOutput result;
result.color = float4(interpolatedColor, 1.0);
return result;
}