-"// myhalf4 bouncegrid_coeff1 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord ));\n"
-"// myhalf4 bouncegrid_coeff2 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.125))) * 2.0 + myhalf4(-1.0, -1.0, -1.0, -1.0);\n"
-" myhalf4 bouncegrid_coeff3 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.250)));\n"
-" myhalf4 bouncegrid_coeff4 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.375)));\n"
-" myhalf4 bouncegrid_coeff5 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.500)));\n"
-" myhalf4 bouncegrid_coeff6 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.625)));\n"
-" myhalf4 bouncegrid_coeff7 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.750)));\n"
-" myhalf4 bouncegrid_coeff8 = myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.875)));\n"
+"// myhalf4 bouncegrid_coeff1 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord ));\n"
+"// myhalf4 bouncegrid_coeff2 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.125))) * 2.0 + cast_myhalf4(-1.0, -1.0, -1.0, -1.0);\n"
+" myhalf4 bouncegrid_coeff3 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.250)));\n"
+" myhalf4 bouncegrid_coeff4 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.375)));\n"
+" myhalf4 bouncegrid_coeff5 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.500)));\n"
+" myhalf4 bouncegrid_coeff6 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.625)));\n"
+" myhalf4 bouncegrid_coeff7 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.750)));\n"
+" myhalf4 bouncegrid_coeff8 = cast_myhalf4(dp_texture3D(Texture_BounceGrid, BounceGridTexCoord + vec3(0.0, 0.0, 0.875)));\n"