mirror of
https://github.com/Kelsidavis/WoWee.git
synced 2026-03-22 23:30:14 +00:00
eaceb58e77
Generate normal+height maps from diffuse textures at load time using luminance-to-height and Sobel 3x3 filtering. Compute per-vertex tangents via Lengyel's method for TBN basis construction. Fragment shader uses screen-space UV derivatives (dFdx/dFdy) for smooth LOD crossfade and angle-adaptive POM sample counts. Flat textures naturally produce low height variance, causing POM to self-select off. Settings: Normal Mapping on by default, POM off by default with Low/Medium/High quality presets. Persisted across sessions.
53 lines
1.3 KiB
GLSL
53 lines
1.3 KiB
GLSL
#version 450
|
|
|
|
layout(set = 0, binding = 0) uniform PerFrame {
|
|
mat4 view;
|
|
mat4 projection;
|
|
mat4 lightSpaceMatrix;
|
|
vec4 lightDir;
|
|
vec4 lightColor;
|
|
vec4 ambientColor;
|
|
vec4 viewPos;
|
|
vec4 fogColor;
|
|
vec4 fogParams;
|
|
vec4 shadowParams;
|
|
};
|
|
|
|
layout(push_constant) uniform Push {
|
|
mat4 model;
|
|
} push;
|
|
|
|
layout(location = 0) in vec3 aPos;
|
|
layout(location = 1) in vec3 aNormal;
|
|
layout(location = 2) in vec2 aTexCoord;
|
|
layout(location = 3) in vec4 aColor;
|
|
layout(location = 4) in vec4 aTangent;
|
|
|
|
layout(location = 0) out vec3 FragPos;
|
|
layout(location = 1) out vec3 Normal;
|
|
layout(location = 2) out vec2 TexCoord;
|
|
layout(location = 3) out vec4 VertColor;
|
|
layout(location = 4) out vec3 Tangent;
|
|
layout(location = 5) out vec3 Bitangent;
|
|
|
|
void main() {
|
|
vec4 worldPos = push.model * vec4(aPos, 1.0);
|
|
FragPos = worldPos.xyz;
|
|
|
|
mat3 normalMatrix = mat3(push.model);
|
|
Normal = normalMatrix * aNormal;
|
|
TexCoord = aTexCoord;
|
|
VertColor = aColor;
|
|
|
|
// Compute TBN basis vectors for normal mapping
|
|
vec3 T = normalize(normalMatrix * aTangent.xyz);
|
|
vec3 N = normalize(Normal);
|
|
// Gram-Schmidt re-orthogonalize
|
|
T = normalize(T - dot(T, N) * N);
|
|
vec3 B = cross(N, T) * aTangent.w;
|
|
|
|
Tangent = T;
|
|
Bitangent = B;
|
|
|
|
gl_Position = projection * view * worldPos;
|
|
}
|