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https://github.com/OpenMW/openmw.git
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4a96885323
Move tangent space generation to the vertex shaders Support diffuse parallax when no normal map is present Don't use diffuse parallax if there's no diffuse map Generalize normal-to-view conversion Rewrite parallax
159 lines
3.6 KiB
GLSL
159 lines
3.6 KiB
GLSL
#version 120
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#if @useUBO
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#extension GL_ARB_uniform_buffer_object : require
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#endif
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#if @useGPUShader4
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#extension GL_EXT_gpu_shader4: require
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#endif
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#include "lib/core/vertex.h.glsl"
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#if @diffuseMap
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varying vec2 diffuseMapUV;
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#endif
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#if @darkMap
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varying vec2 darkMapUV;
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#endif
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#if @detailMap
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varying vec2 detailMapUV;
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#endif
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#if @decalMap
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varying vec2 decalMapUV;
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#endif
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#if @emissiveMap
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varying vec2 emissiveMapUV;
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#endif
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#if @normalMap
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varying vec2 normalMapUV;
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#endif
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#if @envMap
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varying vec2 envMapUV;
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#endif
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#if @bumpMap
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varying vec2 bumpMapUV;
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#endif
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#if @specularMap
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varying vec2 specularMapUV;
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#endif
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#if @glossMap
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varying vec2 glossMapUV;
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#endif
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#define PER_PIXEL_LIGHTING (@normalMap || @forcePPL)
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#if !PER_PIXEL_LIGHTING
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centroid varying vec3 passLighting;
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centroid varying vec3 shadowDiffuseLighting;
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uniform float emissiveMult;
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#endif
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varying vec3 passViewPos;
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varying vec3 passNormal;
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#if @normalMap || @diffuseParallax
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varying vec4 passTangent;
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#endif
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#include "vertexcolors.glsl"
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#include "shadows_vertex.glsl"
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#include "compatibility/normals.glsl"
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#include "lib/light/lighting.glsl"
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#include "lib/view/depth.glsl"
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#if @particleOcclusion
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varying vec3 orthoDepthMapCoord;
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uniform mat4 depthSpaceMatrix;
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uniform mat4 osg_ViewMatrixInverse;
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#endif
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void main(void)
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{
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#if @particleOcclusion
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mat4 model = osg_ViewMatrixInverse * gl_ModelViewMatrix;
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orthoDepthMapCoord = ((depthSpaceMatrix * model) * vec4(gl_Vertex.xyz, 1.0)).xyz;
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#endif
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gl_Position = modelToClip(gl_Vertex);
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vec4 viewPos = modelToView(gl_Vertex);
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gl_ClipVertex = viewPos;
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passColor = gl_Color;
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passViewPos = viewPos.xyz;
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passNormal = gl_Normal.xyz;
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normalToViewMatrix = gl_NormalMatrix;
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#if @normalMap || @diffuseParallax
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passTangent = gl_MultiTexCoord7.xyzw;
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normalToViewMatrix *= generateTangentSpace(passTangent, passNormal);
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#endif
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#if @envMap || !PER_PIXEL_LIGHTING || @shadows_enabled
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vec3 viewNormal = normalToView(passNormal);
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#endif
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#if @envMap
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vec3 viewVec = normalize(viewPos.xyz);
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vec3 r = reflect( viewVec, viewNormal );
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float m = 2.0 * sqrt( r.x*r.x + r.y*r.y + (r.z+1.0)*(r.z+1.0) );
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envMapUV = vec2(r.x/m + 0.5, r.y/m + 0.5);
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#endif
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#if @diffuseMap
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diffuseMapUV = (gl_TextureMatrix[@diffuseMapUV] * gl_MultiTexCoord@diffuseMapUV).xy;
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#endif
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#if @darkMap
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darkMapUV = (gl_TextureMatrix[@darkMapUV] * gl_MultiTexCoord@darkMapUV).xy;
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#endif
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#if @detailMap
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detailMapUV = (gl_TextureMatrix[@detailMapUV] * gl_MultiTexCoord@detailMapUV).xy;
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#endif
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#if @decalMap
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decalMapUV = (gl_TextureMatrix[@decalMapUV] * gl_MultiTexCoord@decalMapUV).xy;
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#endif
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#if @emissiveMap
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emissiveMapUV = (gl_TextureMatrix[@emissiveMapUV] * gl_MultiTexCoord@emissiveMapUV).xy;
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#endif
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#if @normalMap
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normalMapUV = (gl_TextureMatrix[@normalMapUV] * gl_MultiTexCoord@normalMapUV).xy;
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#endif
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#if @bumpMap
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bumpMapUV = (gl_TextureMatrix[@bumpMapUV] * gl_MultiTexCoord@bumpMapUV).xy;
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#endif
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#if @specularMap
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specularMapUV = (gl_TextureMatrix[@specularMapUV] * gl_MultiTexCoord@specularMapUV).xy;
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#endif
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#if @glossMap
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glossMapUV = (gl_TextureMatrix[@glossMapUV] * gl_MultiTexCoord@glossMapUV).xy;
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#endif
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#if !PER_PIXEL_LIGHTING
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vec3 diffuseLight, ambientLight;
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doLighting(viewPos.xyz, viewNormal, diffuseLight, ambientLight, shadowDiffuseLighting);
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vec3 emission = getEmissionColor().xyz * emissiveMult;
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passLighting = getDiffuseColor().xyz * diffuseLight + getAmbientColor().xyz * ambientLight + emission;
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clampLightingResult(passLighting);
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shadowDiffuseLighting *= getDiffuseColor().xyz;
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#endif
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#if (@shadows_enabled)
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setupShadowCoords(viewPos, viewNormal);
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#endif
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}
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