1 /* 2 * The existing isotropic vertex texture functions are added to the 3 * built-in functions for fragment shaders. 4 */ 5 vec4 texture1DLod (sampler1D sampler, float coord, float lod); 6 vec4 texture1DProjLod(sampler1D sampler, vec2 coord, float lod); 7 vec4 texture1DProjLod(sampler1D sampler, vec4 coord, float lod); 8 vec4 texture2DLod (sampler2D sampler, vec2 coord, float lod); 9 vec4 texture2DProjLod(sampler2D sampler, vec3 coord, float lod); 10 vec4 texture2DProjLod(sampler2D sampler, vec4 coord, float lod); 11 vec4 texture3DLod (sampler3D sampler, vec3 coord, float lod); 12 vec4 texture3DProjLod(sampler3D sampler, vec4 coord, float lod); 13 vec4 textureCubeLod (samplerCube sampler, vec3 coord, float lod); 14 vec4 shadow1DLod (sampler1DShadow sampler, vec3 coord, float lod); 15 vec4 shadow2DLod (sampler2DShadow sampler, vec3 coord, float lod); 16 vec4 shadow1DProjLod(sampler1DShadow sampler, vec4 coord, float lod); 17 vec4 shadow2DProjLod(sampler2DShadow sampler, vec4 coord, float lod); 18