Initialer Upload neues Unity-Projekt
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oxidiert
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#pragma kernel CubeMapToEquirectangular
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#pragma kernel CubeMapToEquirectangularPositiveY
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#pragma kernel CubeMapToEquirectangularNegativeY
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RWStructuredBuffer<uint> result;
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StructuredBuffer<uint> cameraPixels;
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SamplerState MyLinearClampSampler;
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uint equirectangularWidth;
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uint equirectangularHeight;
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uint ssaaFactor;
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uint cameraWidth;
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uint cameraHeight;
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uint startY;
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uint sliceHeight;
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uint cameraPixelsSentinelIdx;
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uint sentinelIdx;
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[numthreads(32,32,1)] // Must match threadsX, threadsY in CapturePanorama.cs
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void CubeMapToEquirectangular (uint3 dtid : SV_DispatchThreadID)
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{
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if (dtid.x >= equirectangularWidth || dtid.y >= sliceHeight) // In case width/height not multiple of numthreads
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return;
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if (dtid.x == 0u && dtid.y == 0u)
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result[sentinelIdx] = cameraPixels[cameraPixelsSentinelIdx]; // Sentinel value - set correctly only if set correctly in input buffer
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// Must match enum UnityEngine.CubemapFace
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static const uint PositiveX = 0u;
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static const uint NegativeX = 1u;
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static const uint PositiveY = 2u;
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static const uint NegativeY = 3u;
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static const uint PositiveZ = 4u;
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static const uint NegativeZ = 5u;
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static const float pi = 3.14159265f;
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float4 totalColor = float4(0.0f, 0.0f, 0.0f, 0.0f);
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uint2 pos = uint2(dtid.x, dtid.y + startY);
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uint2 loopStart = pos * ssaaFactor;
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uint2 loopEnd = loopStart + uint2(ssaaFactor, ssaaFactor);
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for (uint y = loopStart.y; y < loopEnd.y; y++)
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{
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for (uint x = loopStart.x; x < loopEnd.x; x++)
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{
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float xcoord = (float)x / (equirectangularWidth * ssaaFactor);
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float ycoord = (float)y / (equirectangularHeight * ssaaFactor);
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float latitude = (ycoord - 0.5f) * pi;
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float longitude = (xcoord * 2.0f - 1.0f) * pi;
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float cosLat = cos(latitude);
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float equirectRayDirectionX = cosLat * sin (longitude);
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float equirectRayDirectionY = sin (latitude);
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float equirectRayDirectionZ = cosLat * cos (longitude);
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float distance;
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float u, v;
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uint cameraNum;
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distance = 1.0f / equirectRayDirectionY;
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u = equirectRayDirectionX * distance; v = equirectRayDirectionZ * distance;
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if (u * u <= 1.0f && v * v <= 1.0f) {
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if (equirectRayDirectionY > 0.0f) {
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cameraNum = PositiveY;
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} else {
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u = -u;
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cameraNum = NegativeY;
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}
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}
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else
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{
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distance = 1.0f / equirectRayDirectionX;
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u = -equirectRayDirectionZ * distance; v = equirectRayDirectionY * distance;
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if (u * u <= 1.0f && v * v <= 1.0f) {
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if (equirectRayDirectionX > 0.0f) {
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v = -v;
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cameraNum = PositiveX;
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} else {
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cameraNum = NegativeX;
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}
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}
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else
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{
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distance = 1.0f / equirectRayDirectionZ;
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u = equirectRayDirectionX * distance; v = equirectRayDirectionY * distance;
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if (u * u <= 1.0f && v * v <= 1.0f) {
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if (equirectRayDirectionZ > 0.0f) {
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v = -v;
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cameraNum = PositiveZ;
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} else {
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cameraNum = NegativeZ;
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}
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}
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}
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}
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u = (u + 1.0f) * 0.5f;
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v = (v + 1.0f) * 0.5f;
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// GetCameraPixelBilinear(cameraPixels, cameraNum, u, v);
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u *= cameraWidth;
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v *= cameraHeight;
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uint left = min(cameraWidth - 1u, (uint)floor(u)); // Modified to add check
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uint right = min(cameraWidth - 1u, left + 1u);
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uint top = min(cameraHeight - 1u, (uint)floor(v)); // Modified to add check
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uint bottom = min(cameraHeight - 1u, top + 1u);
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float uFrac = frac(u);
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float vFrac = frac(v);
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uint baseIdx = cameraNum * cameraWidth * cameraHeight;
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uint topRow = baseIdx + top * cameraWidth;
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uint bottomRow = baseIdx + bottom * cameraWidth;
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uint topLeft = cameraPixels[topRow + left ];
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uint topRight = cameraPixels[topRow + right];
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uint bottomLeft = cameraPixels[bottomRow + left ];
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uint bottomRight = cameraPixels[bottomRow + right];
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float r = lerp(lerp( topLeft >> 16u , bottomLeft >> 16u , vFrac),
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lerp( topRight >> 16u , bottomRight >> 16u , vFrac), uFrac);
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float g = lerp(lerp((topLeft >> 8u) & 0xFFu, (bottomLeft >> 8u) & 0xFFu, vFrac),
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lerp((topRight >> 8u) & 0xFFu, (bottomRight >> 8u) & 0xFFu, vFrac), uFrac);
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float b = lerp(lerp( topLeft & 0xFFu, bottomLeft & 0xFFu, vFrac),
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lerp( topRight & 0xFFu, bottomRight & 0xFFu, vFrac), uFrac);
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totalColor += float4(r, g, b, 255.0f);
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}
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}
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totalColor /= ssaaFactor * ssaaFactor;
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result[(dtid.y * equirectangularWidth) + dtid.x] =
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((uint)totalColor.r << 16u) | ((uint)totalColor.g << 8u) | (uint)totalColor.b;
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}
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[numthreads(32,32,1)] // Must match threadsX, threadsY in CapturePanorama.cs
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void CubeMapToEquirectangularPositiveY (uint3 dtid : SV_DispatchThreadID)
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{
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if (dtid.x >= equirectangularWidth || dtid.y >= sliceHeight) // In case width/height not multiple of numthreads
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return;
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if (dtid.x == 0u && dtid.y == 0u)
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result[sentinelIdx] = cameraPixels[cameraPixelsSentinelIdx]; // Sentinel value - set correctly only if set correctly in input buffer
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static const uint cameraNum = 2; /* PositiveY */
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static const float pi = 3.14159265f;
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float4 totalColor = float4(0.0f, 0.0f, 0.0f, 0.0f);
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uint2 pos = uint2(dtid.x, dtid.y + startY);
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uint2 loopStart = pos * ssaaFactor;
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uint2 loopEnd = loopStart + uint2(ssaaFactor, ssaaFactor);
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for (uint y = loopStart.y; y < loopEnd.y; y++)
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{
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for (uint x = loopStart.x; x < loopEnd.x; x++)
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{
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float xcoord = (float)x / (equirectangularWidth * ssaaFactor);
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float ycoord = (float)y / (equirectangularHeight * ssaaFactor);
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float latitude = (ycoord - 0.5f) * pi;
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float longitude = (xcoord * 2.0f - 1.0f) * pi;
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float cosLat = cos(latitude);
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float equirectRayDirectionX = cosLat * sin (longitude);
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float equirectRayDirectionY = sin (latitude);
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float equirectRayDirectionZ = cosLat * cos (longitude);
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float distance = 1.0f / equirectRayDirectionY;
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float u = equirectRayDirectionX * distance, v = equirectRayDirectionZ * distance;
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u = (u + 1.0f) * 0.5f;
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v = (v + 1.0f) * 0.5f;
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// GetCameraPixelBilinear(cameraPixels, cameraNum, u, v);
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u *= cameraWidth;
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v *= cameraHeight;
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uint left = (uint)floor(u);
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uint right = min(cameraWidth - 1u, left + 1u);
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uint top = (uint)floor(v);
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uint bottom = min(cameraHeight - 1u, top + 1u);
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float uFrac = frac(u);
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float vFrac = frac(v);
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uint baseIdx = cameraNum * cameraWidth * cameraHeight;
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uint topRow = baseIdx + top * cameraWidth;
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uint bottomRow = baseIdx + bottom * cameraWidth;
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uint topLeft = cameraPixels[topRow + left ];
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uint topRight = cameraPixels[topRow + right];
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uint bottomLeft = cameraPixels[bottomRow + left ];
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uint bottomRight = cameraPixels[bottomRow + right];
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float r = lerp(lerp( topLeft >> 16u , bottomLeft >> 16u , vFrac),
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lerp( topRight >> 16u , bottomRight >> 16u , vFrac), uFrac);
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float g = lerp(lerp((topLeft >> 8u) & 0xFFu, (bottomLeft >> 8u) & 0xFFu, vFrac),
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lerp((topRight >> 8u) & 0xFFu, (bottomRight >> 8u) & 0xFFu, vFrac), uFrac);
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float b = lerp(lerp( topLeft & 0xFFu, bottomLeft & 0xFFu, vFrac),
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lerp( topRight & 0xFFu, bottomRight & 0xFFu, vFrac), uFrac);
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totalColor += float4(r, g, b, 255.0f);
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}
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}
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totalColor /= ssaaFactor * ssaaFactor;
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result[(dtid.y * equirectangularWidth) + dtid.x] =
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((uint)totalColor.r << 16u) | ((uint)totalColor.g << 8u) | (uint)totalColor.b;
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}
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[numthreads(32,32,1)] // Must match threadsX, threadsY in CapturePanorama.cs
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void CubeMapToEquirectangularNegativeY (uint3 dtid : SV_DispatchThreadID)
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{
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if (dtid.x >= equirectangularWidth || dtid.y >= sliceHeight) // In case width/height not multiple of numthreads
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return;
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if (dtid.x == 0u && dtid.y == 0u)
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result[sentinelIdx] = cameraPixels[cameraPixelsSentinelIdx]; // Sentinel value - set correctly only if set correctly in input buffer
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static const uint cameraNum = 3; /* NegativeY */
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static const float pi = 3.14159265f;
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float4 totalColor = float4(0.0f, 0.0f, 0.0f, 0.0f);
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uint2 pos = uint2(dtid.x, dtid.y + startY);
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uint2 loopStart = pos * ssaaFactor;
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uint2 loopEnd = loopStart + uint2(ssaaFactor, ssaaFactor);
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for (uint y = loopStart.y; y < loopEnd.y; y++)
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{
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for (uint x = loopStart.x; x < loopEnd.x; x++)
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{
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float xcoord = (float)x / (equirectangularWidth * ssaaFactor);
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float ycoord = (float)y / (equirectangularHeight * ssaaFactor);
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float latitude = (ycoord - 0.5f) * pi;
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float longitude = (xcoord * 2.0f - 1.0f) * pi;
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float cosLat = cos(latitude);
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float equirectRayDirectionX = cosLat * sin (longitude);
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float equirectRayDirectionY = sin (latitude);
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float equirectRayDirectionZ = cosLat * cos (longitude);
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float distance = 1.0f / equirectRayDirectionY;
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float u = equirectRayDirectionX * distance, v = equirectRayDirectionZ * distance;
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u = -u;
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u = (u + 1.0f) * 0.5f;
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v = (v + 1.0f) * 0.5f;
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// GetCameraPixelBilinear(cameraPixels, cameraNum, u, v);
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u *= cameraWidth;
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v *= cameraHeight;
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uint left = (uint)floor(u);
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uint right = min(cameraWidth - 1u, left + 1u);
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uint top = (uint)floor(v);
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uint bottom = min(cameraHeight - 1u, top + 1u);
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float uFrac = frac(u);
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float vFrac = frac(v);
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uint baseIdx = cameraNum * cameraWidth * cameraHeight;
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uint topRow = baseIdx + top * cameraWidth;
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uint bottomRow = baseIdx + bottom * cameraWidth;
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uint topLeft = cameraPixels[topRow + left ];
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uint topRight = cameraPixels[topRow + right];
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uint bottomLeft = cameraPixels[bottomRow + left ];
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uint bottomRight = cameraPixels[bottomRow + right];
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float r = lerp(lerp( topLeft >> 16u , bottomLeft >> 16u , vFrac),
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lerp( topRight >> 16u , bottomRight >> 16u , vFrac), uFrac);
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float g = lerp(lerp((topLeft >> 8u) & 0xFFu, (bottomLeft >> 8u) & 0xFFu, vFrac),
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lerp((topRight >> 8u) & 0xFFu, (bottomRight >> 8u) & 0xFFu, vFrac), uFrac);
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float b = lerp(lerp( topLeft & 0xFFu, bottomLeft & 0xFFu, vFrac),
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lerp( topRight & 0xFFu, bottomRight & 0xFFu, vFrac), uFrac);
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totalColor += float4(r, g, b, 255.0f);
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}
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}
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totalColor /= ssaaFactor * ssaaFactor;
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result[(dtid.y * equirectangularWidth) + dtid.x] =
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((uint)totalColor.r << 16u) | ((uint)totalColor.g << 8u) | (uint)totalColor.b;
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}
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