mirror of
https://github.com/X0nk/Bliss-Shader.git
synced 2025-01-05 17:13:28 +08:00
109 lines
4.5 KiB
GLSL
109 lines
4.5 KiB
GLSL
// float LpvVoxelTest(const in ivec3 voxelCoord) {
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// ivec3 gridCell = ivec3(floor(voxelCoord / LIGHT_BIN_SIZE));
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// uint gridIndex = GetVoxelGridCellIndex(gridCell);
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// ivec3 blockCell = voxelCoord - gridCell * LIGHT_BIN_SIZE;
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// uint blockId = GetVoxelBlockMask(blockCell, gridIndex);
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// return IsTraceOpenBlock(blockId) ? 1.0 : 0.0;
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// }
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vec4 SampleLpvNearest(const in ivec3 lpvPos) {
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vec4 lpvSample = (frameCounter % 2) == 0
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? imageLoad(imgLpv1, lpvPos)
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: imageLoad(imgLpv2, lpvPos);
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//lpvSample.ba = exp2(lpvSample.ba * LpvBlockSkyRange) - 1.0;
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lpvSample.b = (lpvSample.b*lpvSample.b) * LpvBlockSkyRange.x;
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lpvSample.rgb = HsvToRgb(lpvSample.rgb);
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return lpvSample;
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}
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vec4 SampleLpvLinear(const in vec3 lpvPos) {
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vec3 pos = lpvPos;// - 0.5;
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ivec3 lpvCoord = ivec3(floor(pos));
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vec3 lpvF = fract(pos);
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vec4 sample_x1y1z1 = SampleLpvNearest(lpvCoord + ivec3(0, 0, 0));
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vec4 sample_x2y1z1 = SampleLpvNearest(lpvCoord + ivec3(1, 0, 0));
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vec4 sample_x1y2z1 = SampleLpvNearest(lpvCoord + ivec3(0, 1, 0));
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vec4 sample_x2y2z1 = SampleLpvNearest(lpvCoord + ivec3(1, 1, 0));
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vec4 sample_x1y1z2 = SampleLpvNearest(lpvCoord + ivec3(0, 0, 1));
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vec4 sample_x2y1z2 = SampleLpvNearest(lpvCoord + ivec3(1, 0, 1));
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vec4 sample_x1y2z2 = SampleLpvNearest(lpvCoord + ivec3(0, 1, 1));
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vec4 sample_x2y2z2 = SampleLpvNearest(lpvCoord + ivec3(1, 1, 1));
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// #ifdef LPV_VOXEL_TEST
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// vec3 lpvCameraOffset = fract(cameraPosition);
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// vec3 voxelCameraOffset = fract(cameraPosition / LIGHT_BIN_SIZE) * LIGHT_BIN_SIZE;
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// ivec3 voxelPos = ivec3(lpvPos - SceneLPVCenter + VoxelBlockCenter + voxelCameraOffset - lpvCameraOffset + 0.5);
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// float voxel_x1y1z1 = LpvVoxelTest(voxelPos + ivec3(0, 0, 0));
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// float voxel_x2y1z1 = LpvVoxelTest(voxelPos + ivec3(1, 0, 0));
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// float voxel_x1y2z1 = LpvVoxelTest(voxelPos + ivec3(0, 1, 0));
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// float voxel_x2y2z1 = LpvVoxelTest(voxelPos + ivec3(1, 1, 0));
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// float voxel_x1y1z2 = LpvVoxelTest(voxelPos + ivec3(0, 0, 1));
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// float voxel_x2y1z2 = LpvVoxelTest(voxelPos + ivec3(1, 0, 1));
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// float voxel_x1y2z2 = LpvVoxelTest(voxelPos + ivec3(0, 1, 1));
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// float voxel_x2y2z2 = LpvVoxelTest(voxelPos + ivec3(1, 1, 1));
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// sample_x1y1z1 *= voxel_x1y1z1;
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// sample_x2y1z1 *= voxel_x2y1z1;
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// sample_x1y2z1 *= voxel_x1y2z1;
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// sample_x2y2z1 *= voxel_x2y2z1;
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// sample_x1y1z2 *= voxel_x1y1z2;
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// sample_x2y1z2 *= voxel_x2y1z2;
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// sample_x1y2z2 *= voxel_x1y2z2;
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// sample_x2y2z2 *= voxel_x2y2z2;
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// // TODO: Add special checks for avoiding diagonal blending between occluded edges/corners
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// // TODO: preload voxel grid into array
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// // then prevent blending if all but current and opposing quadrants are empty
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// // ivec3 iq = 1 - ivec3(step(vec3(0.5), lpvF));
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// // float voxel_iqx = 1.0 - LpvVoxelTest(ivec3(voxelPos) + ivec3(iq.x, 0, 0));
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// // float voxel_iqy = 1.0 - LpvVoxelTest(ivec3(voxelPos) + ivec3(0, iq.y, 0));
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// // float voxel_iqz = 1.0 - LpvVoxelTest(ivec3(voxelPos) + ivec3(0, 0, iq.z));
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// // float voxel_corner = 1.0 - voxel_iqx * voxel_iqy * voxel_iqz;
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// // float voxel_y1 = LpvVoxelTest(ivec3(voxelPos + vec3(0, 0, 0)));
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// // sample_x1y1z1 *= voxel_y1;
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// // sample_x2y1z1 *= voxel_y1;
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// // sample_x1y1z2 *= voxel_y1;
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// // sample_x2y1z2 *= voxel_y1;
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// // float voxel_y2 = LpvVoxelTest(voxelPos + ivec3(0, 1, 0));
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// // sample_x1y2z1 *= voxel_y2;
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// // sample_x2y2z1 *= voxel_y2;
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// // sample_x1y2z2 *= voxel_y2;
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// // sample_x2y2z2 *= voxel_y2;
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// #endif
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vec4 sample_y1z1 = mix(sample_x1y1z1, sample_x2y1z1, lpvF.x);
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vec4 sample_y2z1 = mix(sample_x1y2z1, sample_x2y2z1, lpvF.x);
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vec4 sample_y1z2 = mix(sample_x1y1z2, sample_x2y1z2, lpvF.x);
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vec4 sample_y2z2 = mix(sample_x1y2z2, sample_x2y2z2, lpvF.x);
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vec4 sample_z1 = mix(sample_y1z1, sample_y2z1, lpvF.y);
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vec4 sample_z2 = mix(sample_y1z2, sample_y2z2, lpvF.y);
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return mix(sample_z1, sample_z2, lpvF.z);// * voxel_corner;
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}
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vec3 GetLpvBlockLight(const in vec4 lpvSample) {
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// return GetLpvBlockLight(lpvSample, 1.0);
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return lpvSample.rgb;// * LPV_BLOCKLIGHT_SCALE);// * DynamicLightBrightness;
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}
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float GetLpvSkyLight(const in vec4 lpvSample) {
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float skyLight = saturate(lpvSample.a);
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// return _pow2(skyLight);
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return skyLight*skyLight;
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}
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