The DirectX 10 HLSL compiler does not have direct support for ps_1_x shaders. For applications that want to continue to compile against the DirectX 9 compiler rules (fxc.exe), you may use fxc.exe with the /LD switch (this requires the D3DX9_31.DLL).
Video card does not support shader model 3.0 code#
This switch has no effect when used with higher level compile targets.ĭifferences between Direct3D 9 and Direct3D 10:īeginning with the December 2006 SDK, the DirectX 10 HLSL compiler ( fxc) (which includes many improvements in code generation) is the default compiler. Effects that specify ps_1_x targets will instead compile to ps_2_0 targets because this is the minimum shader version supported by the DirectX 10 HLSL compiler. To use fxc on ps_1_x shaders requires the /Gec switch to enable backwards compatibility. The OCT2006_d3dx9_31_x86.cab or OCT2006_d3dx9_31_圆4.cab must be included in the applications redist in order to use the legacy compiler. If you still want to use fxc to compile shader to legacy shader models, use the /LD switch. This of course will require that you are running on hardward that supports shader models 2.0 and greater. By no longer supporting these shader models in DirectX 10, the compiler has been redesigned with shader models 2.0 or greater which allows for greater efficiencies with compilation.Īpplications may use the new compiler on existing shaders to take advantage of its improvements in code generation. These include pixel shader models: ps_1_1, ps_1_2, ps_1_3, and ps_1_4 which support very limited resources and are dependent on hardware. Compiling for Legacy Shader Modelsīeginning with DirectX 10, some shader models are no longer supported. Listed below is a snippet from the SDK Docs (Feb 2007). Basically with the new SDK's, the compiler has been changed and as a result shader models less than 2.0 will not compile.
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