Revision 14:
Solved stupid time wasting mystery from way earlier. Involved a header file.
Descriptive Modding: The PSP Engine
Moderator: InsideQC Admins
by Baker » Wed Jan 13, 2010 5:11 pm
Alright ... things are back on schedule again.
Revision 15:
Since things are going smoothly again, I think it's time to put some of the weird things (floats instead of double, alternate math functions, treatment of qboolean values in the cpp files) I've noticed in the PSP Quake source -- which I'm thinking are not necessary --- to the test in Revision 16.
My understanding is that the early PSP Quake used floats instead of double due to the compiler acting up on double. In Quake there are few doubles being used, mostly for the clock. And in the cpp I'm seeing "qtrue" and "qfalse" instead of true and false and regardless of the value of these, false is going to be zero.
We'll see. Maybe I'm overlooking something ...
(I guess technically the cos/tan/atan/etc functions in C return doubles and vec3_t is a set of floats and these functions would avoid a data conversion ...)
Revision 15:
Since things are going smoothly again, I think it's time to put some of the weird things (floats instead of double, alternate math functions, treatment of qboolean values in the cpp files) I've noticed in the PSP Quake source -- which I'm thinking are not necessary --- to the test in Revision 16.
My understanding is that the early PSP Quake used floats instead of double due to the compiler acting up on double. In Quake there are few doubles being used, mostly for the clock. And in the cpp I'm seeing "qtrue" and "qfalse" instead of true and false and regardless of the value of these, false is going to be zero.
We'll see. Maybe I'm overlooking something ...
(I guess technically the cos/tan/atan/etc functions in C return doubles and vec3_t is a set of floats and these functions would avoid a data conversion ...)
The night is young. How else can I annoy the world before sunsrise? 
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..-
Baker - Posts: 3666
- Joined: Tue Mar 14, 2006 5:15 am
by Baker » Wed Jan 13, 2010 8:44 pm
Revision 17:
Compiles and runs just fine with the removal of the float specific math functions.
Except I lost about 10 frames per second. 70fps +/- down to 57 fps. This is a 20% drop!
I'm going to leave it as-is for now and likely I'm going to see if converting the double returning functions in Windows version of ProQuake into the float versions (sqrt --> sqrtf, tan --> tanf) results in any kind of fps gain [not likely to be of the same gain].
And possibly make it standard in ProQuake after testing. I mean, vectors are stored as floats anyway so I don't see any gain from type conversion from double to float. Any differences in precision from float to double in a math function that is converted back to float is going to be microscopic.
Compiles and runs just fine with the removal of the float specific math functions.
Except I lost about 10 frames per second. 70fps +/- down to 57 fps. This is a 20% drop!
I'm going to leave it as-is for now and likely I'm going to see if converting the double returning functions in Windows version of ProQuake into the float versions (sqrt --> sqrtf, tan --> tanf) results in any kind of fps gain [not likely to be of the same gain].
And possibly make it standard in ProQuake after testing. I mean, vectors are stored as floats anyway so I don't see any gain from type conversion from double to float. Any differences in precision from float to double in a math function that is converted back to float is going to be microscopic.
The night is young. How else can I annoy the world before sunsrise? Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..-
Baker - Posts: 3666
- Joined: Tue Mar 14, 2006 5:15 am
by Baker » Wed Jan 13, 2010 11:03 pm
Revision 19:
Had no idea how much work there is in adding ip:port connection ability to standard Quake is (sounds super easy). Well, now I do ...
Had no idea how much work there is in adding ip:port connection ability to standard Quake is (sounds super easy). Well, now I do ...
The night is young. How else can I annoy the world before sunsrise? Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..-
Baker - Posts: 3666
- Joined: Tue Mar 14, 2006 5:15 am
by Baker » Sat Jan 16, 2010 3:22 am
Revision 32:
It's getting closer. A few obstacles remain.
It's getting closer. A few obstacles remain.
The night is young. How else can I annoy the world before sunsrise? Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..-
Baker - Posts: 3666
- Joined: Tue Mar 14, 2006 5:15 am
Who is online
Users browsing this forum: No registered users and 1 guest