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Add normal map code

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This commit is contained in:
scrawl 2016-02-18 00:00:12 +01:00
parent 18e80d5627
commit e5a37a7023
2 changed files with 29 additions and 3 deletions
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20
files/shaders/objects_fragment.glsl
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@ -20,9 +20,15 @@ uniform sampler2D emissiveMap;
varying vec2 emissiveMapUV; varying vec2 emissiveMapUV;
#endif #endif
#if @normalMap
uniform sampler2D normalMap;
varying vec2 normalMapUV;
varying vec3 viewTangent;
#endif
varying float depth; varying float depth;
#define PER_PIXEL_LIGHTING 0 #define PER_PIXEL_LIGHTING @normalMap
#if !PER_PIXEL_LIGHTING #if !PER_PIXEL_LIGHTING
varying vec4 lighting; varying vec4 lighting;
@ -50,11 +56,21 @@ void main()
gl_FragData[0].xyz *= texture2D(darkMap, darkMapUV).xyz; gl_FragData[0].xyz *= texture2D(darkMap, darkMapUV).xyz;
#endif #endif
#if @normalMap
vec3 viewNormal = passViewNormal;
vec3 normalTex = texture2D(normalMap, normalMapUV).xyz;
vec3 viewBinormal = cross(viewTangent, viewNormal);
mat3 tbn = mat3(viewTangent, viewBinormal, viewNormal);
viewNormal = normalize(tbn * (normalTex * 2.0 - 1.0));
#endif
#if !PER_PIXEL_LIGHTING #if !PER_PIXEL_LIGHTING
gl_FragData[0] *= lighting; gl_FragData[0] *= lighting;
#else #else
gl_FragData[0] *= doLighting(passViewPos, passViewNormal, passColour); gl_FragData[0] *= doLighting(passViewPos, normalize(viewNormal), passColour);
#endif #endif
#if @emissiveMap #if @emissiveMap

12
files/shaders/objects_vertex.glsl
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@ -16,9 +16,14 @@ varying vec2 detailMapUV;
varying vec2 emissiveMapUV; varying vec2 emissiveMapUV;
#endif #endif
#if @normalMap
varying vec2 normalMapUV;
varying vec3 viewTangent;
#endif
varying float depth; varying float depth;
#define PER_PIXEL_LIGHTING 0 #define PER_PIXEL_LIGHTING @normalMap
#if !PER_PIXEL_LIGHTING #if !PER_PIXEL_LIGHTING
varying vec4 lighting; varying vec4 lighting;
@ -55,6 +60,11 @@ void main(void)
emissiveMapUV = (gl_TextureMatrix[@emissiveMapUV] * gl_MultiTexCoord@emissiveMapUV).xy; emissiveMapUV = (gl_TextureMatrix[@emissiveMapUV] * gl_MultiTexCoord@emissiveMapUV).xy;
#endif #endif
#if @normalMap
normalMapUV = (gl_TextureMatrix[@normalMapUV] * gl_MultiTexCoord@normalMapUV).xy;
viewTangent = normalize(gl_NormalMatrix * gl_MultiTexCoord7.xyz);
#endif
#if !PER_PIXEL_LIGHTING #if !PER_PIXEL_LIGHTING
lighting = doLighting(viewPos.xyz, viewNormal, gl_Color); lighting = doLighting(viewPos.xyz, viewNormal, gl_Color);
#else #else