mirror of
https://github.com/OpenMW/openmw.git
synced 2025-10-31 09:56:38 +00:00
98 lines
2.5 KiB
GLSL
98 lines
2.5 KiB
GLSL
#version 120
|
|
|
|
#if @useUBO
|
|
#extension GL_ARB_uniform_buffer_object : require
|
|
#endif
|
|
|
|
#if @useGPUShader4
|
|
#extension GL_EXT_gpu_shader4: require
|
|
#endif
|
|
|
|
#define GROUNDCOVER
|
|
|
|
#if @diffuseMap
|
|
uniform sampler2D diffuseMap;
|
|
varying vec2 diffuseMapUV;
|
|
#endif
|
|
|
|
#if @normalMap
|
|
uniform sampler2D normalMap;
|
|
varying vec2 normalMapUV;
|
|
varying vec4 passTangent;
|
|
#endif
|
|
|
|
// Other shaders respect forcePPL, but legacy groundcover mods were designed to work with vertex lighting.
|
|
// They may do not look as intended with per-pixel lighting, so ignore this setting for now.
|
|
#define PER_PIXEL_LIGHTING @normalMap
|
|
|
|
varying float euclideanDepth;
|
|
varying float linearDepth;
|
|
|
|
#if PER_PIXEL_LIGHTING
|
|
varying vec3 passViewPos;
|
|
#else
|
|
centroid varying vec3 passLighting;
|
|
centroid varying vec3 shadowDiffuseLighting;
|
|
#endif
|
|
|
|
varying vec3 passNormal;
|
|
|
|
#include "shadows_fragment.glsl"
|
|
#include "lighting.glsl"
|
|
#include "alpha.glsl"
|
|
|
|
void main()
|
|
{
|
|
vec3 worldNormal = normalize(passNormal);
|
|
|
|
#if @normalMap
|
|
vec4 normalTex = texture2D(normalMap, normalMapUV);
|
|
|
|
vec3 normalizedNormal = worldNormal;
|
|
vec3 normalizedTangent = normalize(passTangent.xyz);
|
|
vec3 binormal = cross(normalizedTangent, normalizedNormal) * passTangent.w;
|
|
mat3 tbnTranspose = mat3(normalizedTangent, binormal, normalizedNormal);
|
|
|
|
worldNormal = normalize(tbnTranspose * (normalTex.xyz * 2.0 - 1.0));
|
|
vec3 viewNormal = gl_NormalMatrix * worldNormal;
|
|
#endif
|
|
|
|
#if @diffuseMap
|
|
gl_FragData[0] = texture2D(diffuseMap, diffuseMapUV);
|
|
#else
|
|
gl_FragData[0] = vec4(1.0);
|
|
#endif
|
|
|
|
if (euclideanDepth > @groundcoverFadeStart)
|
|
gl_FragData[0].a *= 1.0-smoothstep(@groundcoverFadeStart, @groundcoverFadeEnd, euclideanDepth);
|
|
|
|
alphaTest();
|
|
|
|
float shadowing = unshadowedLightRatio(linearDepth);
|
|
|
|
vec3 lighting;
|
|
#if !PER_PIXEL_LIGHTING
|
|
lighting = passLighting + shadowDiffuseLighting * shadowing;
|
|
#else
|
|
vec3 diffuseLight, ambientLight;
|
|
doLighting(passViewPos, normalize(viewNormal), shadowing, diffuseLight, ambientLight);
|
|
lighting = diffuseLight + ambientLight;
|
|
#endif
|
|
|
|
clampLightingResult(lighting);
|
|
|
|
gl_FragData[0].xyz *= lighting;
|
|
|
|
#if @radialFog
|
|
float fogValue = clamp((euclideanDepth - gl_Fog.start) * gl_Fog.scale, 0.0, 1.0);
|
|
#else
|
|
float fogValue = clamp((linearDepth - gl_Fog.start) * gl_Fog.scale, 0.0, 1.0);
|
|
#endif
|
|
gl_FragData[0].xyz = mix(gl_FragData[0].xyz, gl_Fog.color.xyz, fogValue);
|
|
|
|
#if !@disableNormals
|
|
gl_FragData[1].xyz = worldNormal * 0.5 + 0.5;
|
|
#endif
|
|
|
|
applyShadowDebugOverlay();
|
|
}
|