c++ - 错误X8000 : D3D11 Internal Compiler error : Invalid Bytecode: Invalid operand type for operand #1 of opcode #86 (counts are 1-based)

我和我的导师/实验室助理一样绝对感到沮丧。

由于某些原因，以下HLSL代码在输出窗口中返回此代码:

error X8000 : D3D11 Internal Compiler error : Invalid Bytecode: Invalid operand type for operand #1 of opcode #86 (counts are 1-based).

这是导致问题的HLSL中的函数:

// Projects a sphere diameter large in screen space to calculate desired tesselation factor
float SphereToScreenSpaceTessellation(float3 p0, float3 p1, float diameter)
{
float3 centerPoint = (p0 + p1) * 0.5f;

float4 point0 = mul( float4(centerPoint,1.0f) , gTileWorldView);

float4 point1 = point0;
point1.x += diameter;

float4 point0ClipSpace = mul(point0, gTileProj);
float4 point1ClipSpace = mul(point1, gTileProj);

point0ClipSpace /= point0ClipSpace.w;
point1ClipSpace /= point1ClipSpace.w;

point0ClipSpace.xy *= gScreenSize;
point1ClipSpace.xy *= gScreenSize;

float projSizeOfEdge = distance(point0ClipSpace, point1ClipSpace);

float result = projSizeOfEdge / gTessellatedTriWidth;

return clamp(result, 0, 64);
}

我将其范围缩小到可能是“mul”内在因素。我们已经从代码中删除了所有内容，并尝试返回这样的临时变量，它可以正常工作:

float SphereToScreenSpaceTessellation(float3 p0, float3 p1, float diameter)
{

float temp = 0;

float3 centerPoint = (p0 + p1) * 0.5f;

float4 point0 = mul( float4(centerPoint,1.0f) , gTileWorldView);

float4 point1 = point0;
point1.x += diameter;

float4 point0ClipSpace = mul(point0, gTileProj);
float4 point1ClipSpace = mul(point1, gTileProj);

point0ClipSpace /= point0ClipSpace.w;
point1ClipSpace /= point1ClipSpace.w;

point0ClipSpace.xy *= gScreenSize;
point1ClipSpace.xy *= gScreenSize;

float projSizeOfEdge = distance(point0ClipSpace, point1ClipSpace);

float result = projSizeOfEdge / gTessellatedTriWidth;

return temp;
//return clamp(result, 0, 64);
}

如果有人想知道:

gTileWorldView, gTileProj are float4x4's in a .hlsli file
gScreenSize is a float2 in a .hlsli file.
gTessellatedTriWidth is a float in a .hlsli file.

以下功能是2011 NVidia着色器中的状态:http://dx11-xpr.googlecode.com/svn/trunk/XPR/Media/Effects/TerrainTessellation.fx

我试图复制并粘贴他们的解决方案，以上面的变量替换其变量，并且出现相同的错误。

我很沮丧，需要协助才能完成此任务，请帮忙。

最佳答案

查看以下行:

point0ClipSpace.xy * = gScreenSize;

gScreenSize是float2吗？我不相信您可以将vec与任何vec类型进行标量乘积。