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VideoCommon: remove unnecessary floor()

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floatindex is clamped to the range [0, 9]. For non-negative numbers
floor() is equivalent to trunc(). Truncation happens implicitly when
converting to uint, so the floor() is unnecessary.
This commit is contained in:
Tillmann Karras
2018-09-19 04:30:31 +01:00
parent 31594a8138
commit 56fdcf5f00
3 changed files with 3 additions and 3 deletions
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2
Source/Core/VideoCommon/UberShaderPixel.cpp
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@ -1171,7 +1171,7 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
" // ze *= x_adjust\n"
" float offset = (2.0 * (rawpos.x / " I_FOGF ".w)) - 1.0 - " I_FOGF ".z;\n"
" float floatindex = clamp(9.0 - abs(offset) * 9.0, 0.0, 9.0);\n"
" uint indexlower = uint(floor(floatindex));\n"
" uint indexlower = uint(floatindex);\n"
" uint indexupper = indexlower + 1u;\n"
" float klower = " I_FOGRANGE "[indexlower >> 2u][indexlower & 3u];\n"
" float kupper = " I_FOGRANGE "[indexupper >> 2u][indexupper & 3u];\n"