zdoom/qzdoom-gpl
0
0
Fork 0
mirror of https://github.com/ZDoom/qzdoom-gpl.git synced 2024-11-15 00:31:54 +00:00
Code Issues Projects Releases Packages Wiki Activity

Fix buffer overrun in CommandAspectRatio for 21:9 aspect ratio

Browse source
This commit is contained in:
Magnus Norddahl 2016-09-12 16:05:42 +02:00
parent 5b438d220f
commit 4e58e6626c
1 changed files with 32 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
src/g_shared/sbarinfo_commands.cpp
View file

@ -1914,7 +1914,7 @@ class CommandAspectRatio : public SBarInfoCommandFlowControl
{
SBarInfoCommandFlowControl::Tick(block, statusBar, hudChanged);
SetTruth(ratioMap[CheckRatio(screen->GetWidth(), screen->GetHeight())] == ratio, block, statusBar);
SetTruth(ratioMap[FindRatio()] == ratio, block, statusBar);
}
protected:
enum Ratio
@ -1931,6 +1931,37 @@ class CommandAspectRatio : public SBarInfoCommandFlowControl
static Ratio ratioMap[5];
Ratio ratio;
private:
int FindRatio()
{
float aspect = ActiveRatio(screen->GetWidth(), screen->GetHeight());
static std::pair<float, int> ratioTypes[] =
{
{ 21 / 9.0f , ASPECTRATIO_16_9 },
{ 16 / 9.0f , ASPECTRATIO_16_9 },
{ 17 / 10.0f , ASPECTRATIO_17_10 },
{ 16 / 10.0f , ASPECTRATIO_16_10 },
{ 4 / 3.0f , ASPECTRATIO_4_3 },
{ 5 / 4.0f , ASPECTRATIO_5_4 },
{ 0.0f, 0 }
};
int ratio = ratioTypes[0].second;
float distance = abs(ratioTypes[0].first - aspect);
for (int i = 1; ratioTypes[i].first != 0.0f; i++)
{
float d = abs(ratioTypes[i].first - aspect);
if (d < distance)
{
ratio = ratioTypes[i].second;
distance = d;
}
}
return ratio;
}
};
CommandAspectRatio::Ratio CommandAspectRatio::ratioMap[5] = {ASPECTRATIO_4_3,ASPECTRATIO_16_9,ASPECTRATIO_16_10,ASPECTRATIO_16_10,ASPECTRATIO_5_4};