diff options
Diffstat (limited to 'docs/README.DJ')
| -rw-r--r-- | docs/README.DJ | 65 |
1 files changed, 36 insertions, 29 deletions
diff --git a/docs/README.DJ b/docs/README.DJ index 580228234a..6589f52a2e 100644 --- a/docs/README.DJ +++ b/docs/README.DJ @@ -32,22 +32,20 @@ Available options: Environment variables:
CPU optimize for the given processor.
default = k6
- BIG_OPT=1 crazy optimizations; not very useful, though...
- default = no
SGI_GLU=1 build SGI's GLU instead of Mesa's.
default = no
- GLIDE absolute path to Glide library; used with FX.
+ GLIDE path to Glide3 SDK include files; used with FX.
default = $(TOP)/include/glide3
- FX=1 build for 3dfx Glide3; use it if you have the Glide
- SDK (designed for your platform), and, of course, a
- 3dfx card... Note that this disables compilation of
- actual DMesa code, as Glide does all the stuff!
+ FX=1 build for 3dfx Glide3. Note that this disables
+ compilation of most DMesa code and requires fxMesa.
+ As a consequence, you'll need the DJGPP Glide3
+ library to build any application.
default = no
HAVE_X86=1 optimize for i386.
default = no
- HAVE_MMX=1 MMX instructions; use only if you assembler/compiler
- supports MMX instruction set; backwards compatibility
- with older processors is still preserved.
+ HAVE_MMX=1 allow MMX specializations, provided your assembler
+ supports MMX instruction set. However, the true CPU
+ capabilities are checked at run-time to avoid crashes.
default = no
HAVE_SSE=1 (see HAVE_MMX)
default = no
@@ -68,7 +66,7 @@ Tested on: CPU: K6-2 (CXT) @500(412.5) MHz
Mainboard: ViA Apollo VP2/97 w/ 128 MB SDRAM
Video card: PowerColor EvilKing3 (Voodoo3 3000 PCI) w/ 16 MB SDRAM
- DJGPP: djdev 2.04 + gcc v3.2 + make v3.79.1
+ DJGPP: djdev 2.04 + gcc v3.2.1 + make v3.79.1
OS: DOS and Win9x
@@ -99,7 +97,7 @@ FAQ: A) Build your export object file; then link it with your application.
For example:
dxe3res -o dmesadxe.c gl.dxe glu.dxe glut.dxe
- gcc -o dmesadxe.o -c -fno-builtin dmesadxe.c
+ gcc -o dmesadxe.o -c dmesadxe.c
gcc -o OUT.exe dmesadxe.o IN.c -liglut -liglu -ligl -ldl
3. Using Mesa for DJGPP
@@ -109,10 +107,16 @@ FAQ: Glide port is on my web page. If you haven't, sorry; everything is done
in software. Suggestions?
+ Q) I tried to set refresh rate w/ DMesa, but without success.
+ A) Refresh rate control works only for VESA 3.0. If you were compiling for
+ Glide, see Glide info. If not, sorry!
+
Q) I made a simple application and it does nothing. It exits right away. Not
even a blank screen.
- A) Single-buffered is not allowed at all. Until I can find a way to use
- *REAL* hardware acceleration, it won't get implemented.
+ A) Only DMesa+FX supports single-buffered. The standard VESA/VGA drivers
+ will always work in double-buffered modes. If/When I will find a way to
+ use *REAL* hardware acceleration for a specific card, it might or might
+ not support single-buffered modes.
A) Another weird "feature" is that buffer width must be multiple of 8 (I'm a
lazy programmer and I found that the easiest way to keep buffer handling
at peak performance ;-).
@@ -123,10 +127,6 @@ FAQ: GLUT took this into account for _WIN32 DLL's only; I don't want to modify
his headers. The only workaround is to link GLUT the old way :-(
- Q) I tried to set refresh rate w/ DMesa, but without success.
- A) Refresh rate control works only for VESA 3.0. If you were compiling for
- Glide, see Glide info. If not, sorry!
-
Q) The GLUT is incomplete.
A) See below.
@@ -135,9 +135,14 @@ FAQ: libGLUT (the toolkit):
~~~~~~~~~~~~~~~~~~~~~~
-Well, this "skeletal" GLUT implementation is not mine. Thanks should go to
-Bernhard Tschirren, Mark Kilgard, Brian Paul and probably others (or probably
-not ;-). GLUT functionality will be extended only on an "as needed" basis.
+Well, this "skeletal" GLUT implementation was taken from AllegGL project and
+heavily changed. Thanks should go to Bernhard Tschirren, Mark Kilgard, Brian
+Paul and probably others (or probably not ;-). GLUT functionality will be
+extended only on an "as needed" basis.
+
+GLUT talks to hardware via PC_HW package which was put together from various
+pieces I wrote long time ago. It consists from the keyboard, mouse and timer
+drivers.
My keyboard driver used only scancodes; as GLUT requires ASCII values for keys,
I borrowed the translation tables (and maybe more) from Allegro -- many thanks
@@ -163,14 +168,15 @@ means that `printf' can be safely called during graphics. A bit of a hack, I know, because all messages come in bulk, but I think it's better than nothing.
"Borrowed" from LIBRHUTI (Robert Hoehne).
-Window creating defaults: 640x480x16 at (0,0), 8-bit stencil, 16-bit accum.
-However, the video mode is chosen in such a way that first window will fit. If
-you need high resolution with small windows, try to place them far to the right
-(or way down).
+Window creating defaults: 300x300x16 at (0,0), 16-bit depth, 16-bit accum,
+8-bit stencil. However, the video mode is chosen in such a way that first
+window will fit. If you need high resolution with small windows, set initial
+position far to the right (or way down); then you can move them back to any
+position right before the main loop.
The following environment variables can customize GLUT behaviour:
- DMESA_GLUT_REFRESH - set vertical screen refresh rate
- DMESA_GLUT_BPP - set default bits per pixel
+ DMESA_GLUT_REFRESH - set vertical screen refresh rate (VESA3)
+ DMESA_GLUT_BPP - set default bits per pixel (VGA needs 8)
@@ -190,17 +196,18 @@ v1.2 (nov-2002) * synced w/ Mesa-4.1
- removed dmesadxe.h
-v1.3 (dec-2002)
+v1.3 (jan-2003)
+ enabled OpenGL 1.4 support
+ added MMX clear/blit routines
+ enabled SGI's GLU compilation
+ + added new GLUT functions
+ added color-index modes
+ added 8bit FakeColor (thanks to Neil Funk)
+ added VGA support (to keep Ben Decker happy)
* fixed GLUT compilation error (reported by Chan Kar Heng)
* overhauled virtual buffer and internal video drivers
* better fxMesa integration
- * extended GLUT functionality
+ * revamped GLUT
* switched to DXE3
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