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Merge pull request #91219 from Lateasusual/particle-height-field-upside-down 

Fix inverted GPUParticlesCollisionHeightField3D
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Rémi Verschelde 2024-04-29 10:10:12 +02:00
parent 4f1d4ace09 1ca0eeac28
commit 9f336a2953
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GPG Key ID: C3336907360768E1
1 changed files with 3 additions and 3 deletions
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6
servers/rendering/renderer_rd/shaders/particles.glsl
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@ -612,14 +612,14 @@ void main() {
vec3 uvw_pos = vec3(local_pos_bottom / FRAME.colliders[i].extents) * 0.5 + 0.5;
float y = 1.0 - texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz).r;
float y = texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz).r;
if (y > uvw_pos.y) {
//inside heightfield
vec3 pos1 = (vec3(uvw_pos.x, y, uvw_pos.z) * 2.0 - 1.0) * FRAME.colliders[i].extents;
vec3 pos2 = (vec3(uvw_pos.x + DELTA, 1.0 - texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz + vec2(DELTA, 0)).r, uvw_pos.z) * 2.0 - 1.0) * FRAME.colliders[i].extents;
vec3 pos3 = (vec3(uvw_pos.x, 1.0 - texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz + vec2(0, DELTA)).r, uvw_pos.z + DELTA) * 2.0 - 1.0) * FRAME.colliders[i].extents;
vec3 pos2 = (vec3(uvw_pos.x + DELTA, texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz + vec2(DELTA, 0)).r, uvw_pos.z) * 2.0 - 1.0) * FRAME.colliders[i].extents;
vec3 pos3 = (vec3(uvw_pos.x, texture(sampler2D(height_field_texture, SAMPLER_LINEAR_CLAMP), uvw_pos.xz + vec2(0, DELTA)).r, uvw_pos.z + DELTA) * 2.0 - 1.0) * FRAME.colliders[i].extents;
normal = normalize(cross(pos1 - pos2, pos1 - pos3));
float local_y = (vec3(local_pos / FRAME.colliders[i].extents) * 0.5 + 0.5).y;