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