ellipsoid/QuaternionEngine
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ADD: IBL engine side

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hydrogendeuteride
2025-11-11 21:20:34 +09:00
parent a918fc6db8
commit 24e83061b4
14 changed files with 592 additions and 85 deletions
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30
shaders/deferred_lighting.frag
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@@ -21,7 +21,7 @@ const float SHADOW_BORDER_SMOOTH_NDC = 0.08;
// Base PCF radius in texels for cascade 0; higher cascades scale this up slightly.
const float SHADOW_PCF_BASE_RADIUS = 1.35;
// Additional per-cascade radius scale for coarser cascades (0..1 factor added across levels)
const float SHADOW_PCF_CASCADE_GAIN = 2.0; // extra radius at far end
const float SHADOW_PCF_CASCADE_GAIN = 2.0;// extra radius at far end
// Receiver normal-based offset to reduce acne (in world units)
const float SHADOW_NORMAL_OFFSET = 0.0025;
// Scale for receiver-plane depth bias term (tweak if over/under biased)
@@ -29,8 +29,8 @@ const float SHADOW_RPDB_SCALE = 1.0;
// Minimum clamp to keep a tiny bias even on perpendicular receivers
const float SHADOW_MIN_BIAS = 1e-5;
// Ray query safety params
const float SHADOW_RAY_TMIN = 0.02; // start a bit away from the surface
const float SHADOW_RAY_ORIGIN_BIAS = 0.01; // world units
const float SHADOW_RAY_TMIN = 0.02;// start a bit away from the surface
const float SHADOW_RAY_ORIGIN_BIAS = 0.01;// world units
const float PI = 3.14159265359;
@@ -74,7 +74,7 @@ CascadeMix computeCascadeMix(vec3 worldPos)
if (primary < 3u)
{
float edge = max(abs(ndcP.x), abs(ndcP.y)); // 0..1, 1 at border
float edge = max(abs(ndcP.x), abs(ndcP.y));// 0..1, 1 at border
// start blending when we are within S of the border
float t = clamp((edge - (1.0 - SHADOW_BORDER_SMOOTH_NDC)) / max(SHADOW_BORDER_SMOOTH_NDC, 1e-4), 0.0, 1.0);
float w = smoothstep(0.0, 1.0, t);
@@ -107,7 +107,7 @@ vec2 receiverPlaneDepthGradient(vec3 ndc, vec3 dndc_dx, vec3 dndc_dy)
// Build Jacobian J = [du/dx du/dy; dv/dx dv/dy] (column-major)
mat2 J = mat2(duv_dx.x, duv_dy.x,
duv_dx.y, duv_dy.y);
duv_dx.y, duv_dy.y);
// Depth derivatives w.r.t screen pixels
vec2 dz_dxdy = vec2(dndc_dx.z, dndc_dy.z);
@@ -121,9 +121,9 @@ vec2 receiverPlaneDepthGradient(vec3 ndc, vec3 dndc_dx, vec3 dndc_dy)
}
// Manual inverse for stability/perf on some drivers
mat2 invJ = (1.0 / det) * mat2( J[1][1], -J[0][1],
-J[1][0], J[0][0]);
return invJ * dz_dxdy; // (dz/du, dz/dv)
mat2 invJ = (1.0 / det) * mat2(J[1][1], -J[0][1],
-J[1][0], J[0][0]);
return invJ * dz_dxdy;// (dz/du, dz/dv)
}
float sampleCascadeShadow(uint ci, vec3 worldPos, vec3 N, vec3 L)
@@ -135,7 +135,7 @@ float sampleCascadeShadow(uint ci, vec3 worldPos, vec3 N, vec3 L)
vec2 suv = ndc.xy * 0.5 + 0.5;
if (any(lessThan(suv, vec2(0.0))) || any(greaterThan(suv, vec2(1.0))))
return 1.0;
return 1.0;
float current = clamp(ndc.z, 0.0, 1.0);
@@ -165,7 +165,7 @@ float sampleCascadeShadow(uint ci, vec3 worldPos, vec3 N, vec3 L)
for (int i = 0; i < TAP_COUNT; ++i)
{
vec2 pu = rot * POISSON_16[i];
vec2 off = pu * radius * texelSize; // uv-space offset of this tap
vec2 off = pu * radius * texelSize;// uv-space offset of this tap
float pr = length(pu);
float w = 1.0 - smoothstep(0.0, 0.65, pr);
@@ -194,10 +194,10 @@ float calcShadowVisibility(vec3 worldPos, vec3 N, vec3 L)
if (sceneData.rtOptions.z == 2u) {
#ifdef GL_EXT_ray_query
float farR = max(max(sceneData.cascadeSplitsView.x, sceneData.cascadeSplitsView.y),
max(sceneData.cascadeSplitsView.z, sceneData.cascadeSplitsView.w));
max(sceneData.cascadeSplitsView.z, sceneData.cascadeSplitsView.w));
rayQueryEXT rq;
rayQueryInitializeEXT(rq, topLevelAS, gl_RayFlagsTerminateOnFirstHitEXT | gl_RayFlagsOpaqueEXT,
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, farR);
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, farR);
while (rayQueryProceedEXT(rq)) { }
bool hit = (rayQueryGetIntersectionTypeEXT(rq, true) != gl_RayQueryCommittedIntersectionNoneEXT);
return hit ? 0.0 : 1.0;
@@ -224,7 +224,7 @@ float calcShadowVisibility(vec3 worldPos, vec3 N, vec3 L)
rayQueryEXT rq;
// tmin: small offset to avoid self-hits
rayQueryInitializeEXT(rq, topLevelAS, gl_RayFlagsTerminateOnFirstHitEXT | gl_RayFlagsOpaqueEXT,
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, maxT);
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, maxT);
bool hit = false;
while (rayQueryProceedEXT(rq)) { }
hit = (rayQueryGetIntersectionTypeEXT(rq, true) != gl_RayQueryCommittedIntersectionNoneEXT);
@@ -252,7 +252,7 @@ float calcShadowVisibility(vec3 worldPos, vec3 N, vec3 L)
float maxT = max(maxT0, maxT1);
rayQueryEXT rq;
rayQueryInitializeEXT(rq, topLevelAS, gl_RayFlagsTerminateOnFirstHitEXT | gl_RayFlagsOpaqueEXT,
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, maxT);
0xFF, wp + N * SHADOW_RAY_ORIGIN_BIAS, SHADOW_RAY_TMIN, L, maxT);
while (rayQueryProceedEXT(rq)) { }
bool hit = (rayQueryGetIntersectionTypeEXT(rq, true) != gl_RayQueryCommittedIntersectionNoneEXT);
if (hit) vis = min(vis, 0.0);
@@ -341,4 +341,4 @@ void main(){
color += albedo * sceneData.ambientColor.rgb;
outColor = vec4(color, 1.0);
}
}