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wined3d: Raise the 1x pixelshader max value to the d3d minimum.

This commit is contained in:
Stefan Dösinger 2007-08-29 20:16:13 +02:00 committed by Alexandre Julliard
parent 33ecb1db1a
commit 75f9bf43be
1 changed files with 14 additions and 3 deletions
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17
dlls/wined3d/directx.c
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@ -2204,12 +2204,23 @@ static HRESULT WINAPI IWineD3DImpl_GetDeviceCaps(IWineD3D *iface, UINT Adapter,
*pCaps->PixelShaderVersion = WINED3DPS_VERSION(2,0);
else
*pCaps->PixelShaderVersion = WINED3DPS_VERSION(3,0);
/* FIXME: The following line is card dependent. -1.0 to 1.0 is a safe default clamp range for now */
*pCaps->PixelShader1xMaxValue = 1.0;
/* FIXME: The following line is card dependent. -8.0 to 8.0 is the
* Direct3D minimum requirement.
*
* Both GL_ARB_fragment_program and GLSL require a "maximum representable magnitude"
* of colors to be 2^10, and 2^32 for other floats. Should we use 1024 here?
*
* The problem is that the refrast clamps temporary results in the shader to
* [-MaxValue;+MaxValue]. If the card's max value is bigger than the one we advertize here,
* then applications may miss the clamping behavior. On the other hand, if it is smaller,
* the shader will generate incorrect results too. Unfortunately, GL deliberately doesn't
* offer a way to query this.
*/
*pCaps->PixelShader1xMaxValue = 8.0;
TRACE_(d3d_caps)("Hardware pixel shader version 3.0 enabled (GLSL)\n");
} else if (ps_selected_mode == SHADER_ARB) {
*pCaps->PixelShaderVersion = WINED3DPS_VERSION(1,4);
*pCaps->PixelShader1xMaxValue = 1.0;
*pCaps->PixelShader1xMaxValue = 8.0;
TRACE_(d3d_caps)("Hardware pixel shader version 1.4 enabled (ARB_PROGRAM)\n");
} else {
*pCaps->PixelShaderVersion = 0;