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Daniel Borca's new DOS/DJGPP driver.

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Brian Paul
2002-02-12 03:24:56 +00:00
parent cc27365d77
commit db41d2ea8c
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Mesa 4.0.1 DOS/DJGPP Port version 0.1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
First of all...
~~~~~~~~~~~~~~~
This is a DOS port for MESA 4.0.1. I didn't bother to consider any DOS C
compiler other than gcc, so this port was written using DJGPP v2. To be more
precise:
djdev 2.03
gcc v3.0.3
make v3.79
Almost all demos were compiled and ran succesfully on my system:
CPU: Intel Pentium w/ MMX @166 MHz
Mainboard: ViA Apollo VP2 w/ 128 MB SDRAM
Video card: Matrox Millenium I w/ 4096 kB WRAM, Matrox BIOS v3.0
Since I don't have access to any accelerated video hardware, this port is
entirely based on VESA/SuperVGA. My little attempt to use FreeBE/AF ended in
a failure, but that's another story: it seemed to work fine with my older
Matrox Millenium w/ 2MB, and then I got another Matrox Millenium w/ 4MB. The
problem with latter was it had a dead BIOS; I hot-flashed it and made it work
in all environments (Windows 95, VESA, etc) but FreeBE/AF.
Legal:
~~~~~~
This software is distributed under the terms of the GNU Lesser General Public
License.
Source code written by others is subject to its respective copyright.
libGL (the core):
~~~~~~~~~~~~~~~~~
Of course, MESA 4.0.1 core sources are required. It will probably work with
MESA 3.5, but not a chance with earlier versions due to major changes to the
MESA driver interface and the directory tree. All should compile succesfully.
The driver has its origins in ddsample.c, written by Brian Paul and found by
me in MESA 3.4.2. I touched almost all the functions, changing the coding
style ;-( Sorry!
Pitfalls:
1. The current version supports only RGB[A] modes, for it made no sense to me
to endorse color-index (aka palette) modes.
2. Only double-buffered is allowed because it was simpler to implement at
that moment. Single-buffered will appear soon, especially if I can find a
way to use hardware acceleration.
3. Another weird "feature" is that buffer width & height must be multiple of
4 (I'm a lazy programmer and I found that the easiest way to keep buffer
handling at peak performance ;-).
4. The video mode selector is tricky: it searches for the smallest mode which
will entirely contain the buffer at its current position. If you want a
small buffer in a high-res mode, try to position it very far to the right
(or down). I'd really use some ideas here!!!
libGLU:
~~~~~~~
Mesa GLU sources are required. Everything should run smooth.
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 ;-). I only changed it to be self-standing (Allegro-free). The keyboard,
mouse and timer drivers were inspired from an old project of mine (D3Xl) and
fixed with some Allegro "infusions"; my deeply thanks to Shawn Hargreaves and
co.
My keyboard driver used only scancodes, but since GLUT requires ASCII values
for keys, I borrowed the translation tables (and maybe more) from Allegro.
Ctrl-Alt-Del (plus Ctrl-Alt-End, for Windows users) will shut down the GLUT
engine unconditionally: it will raise SIGINT, which in turn will call the
destructors (let's hope), thus cleaning up your/my mess ;-)
The mouse driver is far from complete (lack of positioning, drawing, etc),
but is enough to make almost all the demos work.
The timer is pretty versatile for it supports multiple timers with different
frequencies. It may not be the most accurate timer in the known universe, but
I think it's OK. Take this example: you have timer A with a very high rate,
and then you have timer B with very low rate compared to A; now, A ticks OK,
but timer B will probably loose precision!
As an addition, stdout and stderr are redirected and dumped upon exit. This
means that printf can be safely called during graphics, but all messages come
in bulk! A bit of a hack, I know, but I think it's better than to miss them
at all.
Window creating defaults: 640x480x16 at (0,0), 8-bit stencil, 16-bit accum.
Installation:
~~~~~~~~~~~~~
Unzip into the MESA directory, and type "make -f Makefile.DJ" to compile all
libraries. Long filename support is required during compilation. The examples
are not built automagically (see Pitfalls above).
History:
~~~~~~~~
v0.1 feb-2002 initial release
v0.2 ..soon..
Contact:
~~~~~~~~
Name: Borca Daniel
E-mail: dborca@yahoo.com
WWW: http://www.geocities.com/dborca/

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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#ifndef DMESA_included
#define DMESA_included
#define DMESA_MAJOR_VERSION 4
#define DMESA_MINOR_VERSION 0
typedef struct dmesa_context *DMesaContext;
typedef struct dmesa_visual *DMesaVisual;
typedef struct dmesa_buffer *DMesaBuffer;
#ifdef __cplusplus
extern "C" {
#endif
DMesaVisual DMesaCreateVisual (GLint colDepth, GLboolean dbFlag,
GLint depthSize, GLint stencilSize,
GLint accumSize);
void DMesaDestroyVisual (DMesaVisual v);
DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,
GLint width, GLint height,
GLint xpos, GLint ypos);
void DMesaDestroyBuffer (DMesaBuffer b);
DMesaContext DMesaCreateContext (DMesaVisual visual,
DMesaContext share);
void DMesaDestroyContext (DMesaContext c);
GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b);
void DMesaSwapBuffers (DMesaBuffer b);
#ifdef __cplusplus
}
#endif
#endif

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# Mesa 3-D graphics library
# Version: 4.0
#
# Copyright (C) 1999 Brian Paul All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# DOS/DJGPP glu makefile v0.1 for Mesa 4.0
#
# Copyright (C) 2002 - Borca Daniel
# Email : dborca@yahoo.com
# Web : http://www.geocities.com/dborca
.PHONY: all clean
TOP = ..
CC = gcc
CFLAGS = -I$(TOP)/include -Wall -W -Wno-unused -mcpu=pentium -ffast-math -O2
AR = ar
ARFLAGS = ruv
LIBDIR = $(TOP)/lib
GLU_LIB = libglu.a
CORE_SOURCES = \
glu.c \
mipmap.c \
nurbs.c \
nurbscrv.c \
nurbssrf.c \
nurbsutl.c \
polytest.c \
project.c \
quadric.c \
tess.c \
tesselat.c
SOURCES = $(CORE_SOURCES)
OBJECTS = $(SOURCES:.c=.o)
.c.o:
gcc -o $@ -c $(CFLAGS) $<
all: $(LIBDIR)/$(GLU_LIB)
$(LIBDIR)/$(GLU_LIB): $(OBJECTS)
$(AR) $(ARFLAGS) $(LIBDIR)/$(GLU_LIB) $(OBJECTS)
clean:
-$(RM) *.o
include depend

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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#ifdef PC_HEADER
#include "all.h"
#else
#include "glheader.h"
#include "context.h"
#include "GL/dmesa.h"
#include "matrix.h"
#include "texformat.h"
#include "texstore.h"
#include "array_cache/acache.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_pipeline.h"
#endif
#include "dvesa.h"
#include "dmesaint.h"
/*
* In C++ terms, this class derives from the GLvisual class.
* Add system-specific fields to it.
*/
struct dmesa_visual {
GLvisual *gl_visual;
GLboolean db_flag; /* double buffered? */
GLboolean rgb_flag; /* RGB mode? */
GLuint depth; /* bits per pixel (1, 8, 24, etc) */
};
/*
* In C++ terms, this class derives from the GLframebuffer class.
* Add system-specific fields to it.
*/
struct dmesa_buffer {
GLframebuffer *gl_buffer; /* The depth, stencil, accum, etc buffers */
void *the_window; /* your window handle, etc */
int width, height; /* size in pixels */
int xpos, ypos; /* buffer position */
int xsize, len; /* number of bytes in a line, then total */
int delta; /* used to wrap around */
int offset; /* offset in video */
struct dvmode *video;
};
/*
* In C++ terms, this class derives from the GLcontext class.
* Add system-specific fields to it.
*/
struct dmesa_context {
GLcontext *gl_ctx; /* the core library context */
DMesaVisual visual;
DMesaBuffer Buffer;
GLuint ClearColor;
/* etc... */
};
static void dmesa_update_state (GLcontext *ctx, GLuint new_state);
/**********************************************************************/
/***** Read/Write pixels *****/
/**********************************************************************/
WRITE_RGBA_SPAN(15)
WRITE_RGBA_SPAN(16)
WRITE_RGBA_SPAN(24)
WRITE_RGBA_SPAN(32)
WRITE_RGB_SPAN(15)
WRITE_RGB_SPAN(16)
WRITE_RGB_SPAN(24)
WRITE_RGB_SPAN(32)
WRITE_MONO_RGBA_SPAN(15)
WRITE_MONO_RGBA_SPAN(16)
WRITE_MONO_RGBA_SPAN(24)
WRITE_MONO_RGBA_SPAN(32)
READ_RGBA_SPAN(15)
READ_RGBA_SPAN(16)
READ_RGBA_SPAN(24)
READ_RGBA_SPAN(32)
WRITE_RGBA_PIXELS(15)
WRITE_RGBA_PIXELS(16)
WRITE_RGBA_PIXELS(24)
WRITE_RGBA_PIXELS(32)
WRITE_MONO_RGBA_PIXELS(15)
WRITE_MONO_RGBA_PIXELS(16)
WRITE_MONO_RGBA_PIXELS(24)
WRITE_MONO_RGBA_PIXELS(32)
READ_RGBA_PIXELS(15)
READ_RGBA_PIXELS(16)
READ_RGBA_PIXELS(24)
READ_RGBA_PIXELS(32)
/**********************************************************************/
/***** Miscellaneous device driver funcs *****/
/**********************************************************************/
static void clear_color (GLcontext *ctx, const GLchan color[4])
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
c->ClearColor = dv_color(color);
}
static void clear (GLcontext *ctx, GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height)
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
const GLuint *colorMask = (GLuint *)&ctx->Color.ColorMask;
DMesaBuffer b = c->Buffer;
/*
* Clear the specified region of the buffers indicated by 'mask'
* using the clear color or index as specified by one of the two
* functions above.
* If all==GL_TRUE, clear whole buffer, else just clear region defined
* by x,y,width,height
*/
/* we can't handle color or index masking */
if (*colorMask==0xffffffff && ctx->Color.IndexMask==0xffffffff) {
if (mask&DD_BACK_LEFT_BIT) {
if (all) {
dv_clear_virtual(b->the_window, b->len, c->ClearColor);
} else {
dv_fillrect(b->the_window, b->width, x, y, width, height, c->ClearColor);
}
mask &= ~DD_BACK_LEFT_BIT;
}
}
if (mask) {
_swrast_Clear(ctx, mask, all, x, y, width, height);
}
}
/*
* Set the current reading buffer.
*/
static void set_read_buffer (GLcontext *ctx, GLframebuffer *buffer,
GLenum mode)
{
/*
DMesaContext c = (DMesaContext)ctx->DriverCtx;
dmesa_update_state(ctx);
*/
}
/*
* Set the destination/draw buffer.
*/
static GLboolean set_draw_buffer (GLcontext *ctx, GLenum mode)
{
if (mode==GL_BACK_LEFT) {
return GL_TRUE;
} else {
return GL_FALSE;
}
}
/*
* Return the width and height of the current buffer.
* If anything special has to been done when the buffer/window is
* resized, do it now.
*/
static void get_buffer_size (GLcontext *ctx, GLuint *width, GLuint *height)
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
*width = c->Buffer->width;
*height = c->Buffer->height;
}
static const GLubyte* get_string (GLcontext *ctx, GLenum name)
{
switch (name) {
case GL_RENDERER:
return (const GLubyte *)"DOS Mesa";
default:
return NULL;
}
}
/**********************************************************************/
/***** Miscellaneous device driver funcs *****/
/***** Note that these functions are mandatory *****/
/**********************************************************************/
/* OPTIONAL FUNCTION: implements glFinish if possible */
static void finish (GLcontext *ctx)
{
/*
DMesaContext c = (DMesaContext)ctx->DriverCtx;
*/
}
/* OPTIONAL FUNCTION: implements glFlush if possible */
static void flush (GLcontext *ctx)
{
/*
DMesaContext c = (DMesaContext)ctx->DriverCtx;
*/
}
/**********************************************************************/
/**********************************************************************/
/* Setup pointers and other driver state that is constant for the life
* of a context.
*/
void dmesa_init_pointers (GLcontext *ctx)
{
TNLcontext *tnl;
ctx->Driver.UpdateState = dmesa_update_state;
ctx->Driver.GetString = get_string;
ctx->Driver.GetBufferSize = get_buffer_size;
ctx->Driver.Flush = flush;
ctx->Driver.Finish = finish;
/* Software rasterizer pixel paths:
*/
ctx->Driver.Accum = _swrast_Accum;
ctx->Driver.Bitmap = _swrast_Bitmap;
ctx->Driver.Clear = clear;
ctx->Driver.ResizeBuffersMESA = _swrast_alloc_buffers;
ctx->Driver.CopyPixels = _swrast_CopyPixels;
ctx->Driver.DrawPixels = _swrast_DrawPixels;
ctx->Driver.ReadPixels = _swrast_ReadPixels;
/* Software texture functions:
*/
ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format;
ctx->Driver.TexImage1D = _mesa_store_teximage1d;
ctx->Driver.TexImage2D = _mesa_store_teximage2d;
ctx->Driver.TexImage3D = _mesa_store_teximage3d;
ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;
ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d;
ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;
ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;
ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;
ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;
ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;
ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;
ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;
ctx->Driver.BaseCompressedTexFormat = _mesa_base_compressed_texformat;
ctx->Driver.CompressedTextureSize = _mesa_compressed_texture_size;
ctx->Driver.GetCompressedTexImage = _mesa_get_compressed_teximage;
/* Swrast hooks for imaging extensions:
*/
ctx->Driver.CopyColorTable = _swrast_CopyColorTable;
ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;
ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
/* Statechange callbacks:
*/
ctx->Driver.SetDrawBuffer = set_draw_buffer;
ctx->Driver.ClearColor = clear_color;
/* Initialize the TNL driver interface:
*/
tnl = TNL_CONTEXT(ctx);
tnl->Driver.RunPipeline = _tnl_run_pipeline;
/* Install swsetup for tnl->Driver.Render.*:
*/
_swsetup_Wakeup(ctx);
}
static void dmesa_update_state (GLcontext *ctx, GLuint new_state)
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
/* Initialize all the pointers in the DD struct. Do this whenever */
/* a new context is made current or we change buffers via set_buffer! */
_swrast_InvalidateState(ctx, new_state);
_swsetup_InvalidateState(ctx, new_state);
_ac_InvalidateState(ctx, new_state);
_tnl_InvalidateState(ctx, new_state);
swdd->SetReadBuffer = set_read_buffer;
/* RGB(A) span/pixel functions */
switch (c->visual->depth) {
case 15:
swdd->WriteRGBASpan = write_rgba_span_15;
swdd->WriteRGBSpan = write_rgb_span_15;
swdd->WriteMonoRGBASpan = write_mono_rgba_span_15;
swdd->WriteRGBAPixels = write_rgba_pixels_15;
swdd->WriteMonoRGBAPixels = write_mono_rgba_pixels_15;
swdd->ReadRGBASpan = read_rgba_span_15;
swdd->ReadRGBAPixels = read_rgba_pixels_15;
break;
case 16:
swdd->WriteRGBASpan = write_rgba_span_16;
swdd->WriteRGBSpan = write_rgb_span_16;
swdd->WriteMonoRGBASpan = write_mono_rgba_span_16;
swdd->WriteRGBAPixels = write_rgba_pixels_16;
swdd->WriteMonoRGBAPixels = write_mono_rgba_pixels_16;
swdd->ReadRGBASpan = read_rgba_span_16;
swdd->ReadRGBAPixels = read_rgba_pixels_16;
break;
case 24:
swdd->WriteRGBASpan = write_rgba_span_24;
swdd->WriteRGBSpan = write_rgb_span_24;
swdd->WriteMonoRGBASpan = write_mono_rgba_span_24;
swdd->WriteRGBAPixels = write_rgba_pixels_24;
swdd->WriteMonoRGBAPixels = write_mono_rgba_pixels_24;
swdd->ReadRGBASpan = read_rgba_span_24;
swdd->ReadRGBAPixels = read_rgba_pixels_24;
break;
case 32:
swdd->WriteRGBASpan = write_rgba_span_32;
swdd->WriteRGBSpan = write_rgb_span_32;
swdd->WriteMonoRGBASpan = write_mono_rgba_span_32;
swdd->WriteRGBAPixels = write_rgba_pixels_32;
swdd->WriteMonoRGBAPixels = write_mono_rgba_pixels_32;
swdd->ReadRGBASpan = read_rgba_span_32;
swdd->ReadRGBAPixels = read_rgba_pixels_32;
break;
}
}
/**********************************************************************/
/***** DMesa Public API Functions *****/
/**********************************************************************/
/*
* The exact arguments to this function will depend on your window system
*/
DMesaVisual DMesaCreateVisual (GLint colDepth, GLboolean dbFlag,
GLint depthSize, GLint stencilSize,
GLint accumSize)
{
DMesaVisual v;
GLint redBits, greenBits, blueBits, alphaBits;
if (!dbFlag) {
return NULL;
}
switch (colDepth) {
case 15:
redBits = 5;
greenBits = 5;
blueBits = 5;
break;
case 16:
redBits = 5;
greenBits = 6;
blueBits = 5;
break;
case 24:
case 32:
redBits = 8;
greenBits = 8;
blueBits = 8;
break;
default:
return NULL;
}
alphaBits = 8;
if ((v=(DMesaVisual)calloc(1, sizeof(struct dmesa_visual)))!=NULL) {
/* Create core visual */
v->gl_visual = _mesa_create_visual(colDepth>8, /* rgb */
dbFlag,
GL_FALSE, /* stereo */
redBits,
greenBits,
blueBits,
alphaBits,
0, /* indexBits */
depthSize,
stencilSize,
accumSize, /* accumRed */
accumSize, /* accumGreen */
accumSize, /* accumBlue */
alphaBits?accumSize:0, /* accumAlpha */
1); /* numSamples */
v->depth = colDepth;
v->db_flag = dbFlag;
}
return v;
}
void DMesaDestroyVisual (DMesaVisual v)
{
_mesa_destroy_visual(v->gl_visual);
free(v);
}
DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,
GLint width, GLint height,
GLint xpos, GLint ypos)
{
DMesaBuffer b;
if ((b=(DMesaBuffer)calloc(1, sizeof(struct dmesa_buffer)))!=NULL) {
if (visual->db_flag) {
if ((b->the_window=calloc(1, width*height*((visual->depth+7)/8)))==NULL) {
return NULL;
}
}
b->gl_buffer = _mesa_create_framebuffer(visual->gl_visual,
visual->gl_visual->depthBits > 0,
visual->gl_visual->stencilBits > 0,
visual->gl_visual->accumRedBits > 0,
visual->gl_visual->alphaBits > 0);
b->width = width;
b->height = height;
b->xpos = xpos;
b->ypos = ypos;
}
return b;
}
void DMesaDestroyBuffer (DMesaBuffer b)
{
free(b->the_window);
_mesa_destroy_framebuffer(b->gl_buffer);
free(b);
}
DMesaContext DMesaCreateContext (DMesaVisual visual,
DMesaContext share)
{
DMesaContext c;
GLboolean direct = GL_FALSE;
if ((c=(DMesaContext)calloc(1, sizeof(struct dmesa_context)))!=NULL) {
c->gl_ctx = _mesa_create_context(visual->gl_visual,
share ? share->gl_ctx : NULL,
(void *)c, direct);
/* you probably have to do a bunch of other initializations here. */
c->visual = visual;
/* Initialize the software rasterizer and helper modules.
*/
_swrast_CreateContext(c->gl_ctx);
_ac_CreateContext(c->gl_ctx);
_tnl_CreateContext(c->gl_ctx);
_swsetup_CreateContext(c->gl_ctx);
dmesa_init_pointers(c->gl_ctx);
}
return c;
}
void DMesaDestroyContext (DMesaContext c)
{
_mesa_destroy_context(c->gl_ctx);
free(c);
}
/*
* Make the specified context and buffer the current one.
*/
GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b)
{
if (c&&b) {
c->Buffer = b;
if ((b->video=dv_select_mode(b->xpos, b->ypos, b->width, b->height, c->visual->depth, &b->delta, &b->offset))==NULL) {
return GL_FALSE;
}
b->xsize = b->width*((c->visual->depth+7)/8);
b->len = b->xsize*b->height;
dmesa_update_state(c->gl_ctx, 0);
_mesa_make_current(c->gl_ctx, b->gl_buffer);
if (c->gl_ctx->Viewport.Width==0) {
/* initialize viewport to window size */
_mesa_Viewport(0, 0, c->Buffer->width, c->Buffer->height);
}
} else {
/* Detach */
_mesa_make_current(NULL, NULL);
}
return GL_TRUE;
}
void DMesaSwapBuffers (DMesaBuffer b)
{
/* copy/swap back buffer to front if applicable */
if (b->the_window) {
dv_dump_virtual(b->the_window, b->xsize, b->height, b->offset, b->delta);
}
}

231
src/mesa/drivers/dos/dmesaint.h Normal file
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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#ifndef DMESAINT_H_included
#define DMESAINT_H_included
#define FLIP(y) (c->Buffer->height - (y) - 1)
#define FLIP2(y) (h - (y) - 1)
/**********************************************************************/
/***** Write spans of pixels *****/
/**********************************************************************/
#define WRITE_RGBA_SPAN(bpp) \
static void write_rgba_span_##bpp (const GLcontext *ctx, GLuint n, GLint x, GLint y, \
const GLubyte rgba[][4], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, offset; \
\
offset = c->Buffer->width * FLIP(y) + x; \
if (mask) { \
/* draw some pixels */ \
for (i=0; i<n; i++, offset++) { \
if (mask[i]) { \
dv_putpixel##bpp(b, offset, dv_color##bpp(rgba[i])); \
} \
} \
} else { \
/* draw all pixels */ \
for (i=0; i<n; i++, offset++) { \
dv_putpixel##bpp(b, offset, dv_color##bpp(rgba[i])); \
} \
} \
}
#define WRITE_RGB_SPAN(bpp) \
static void write_rgb_span_##bpp (const GLcontext *ctx, GLuint n, GLint x, GLint y, \
const GLubyte rgb[][3], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, offset; \
\
offset = c->Buffer->width * FLIP(y) + x; \
if (mask) { \
/* draw some pixels */ \
for (i=0; i<n; i++, offset++) { \
if (mask[i]) { \
dv_putpixel##bpp(b, offset, dv_color##bpp(rgb[i])); \
} \
} \
} else { \
/* draw all pixels */ \
for (i=0; i<n; i++, offset++) { \
dv_putpixel##bpp(b, offset, dv_color##bpp(rgb[i])); \
} \
} \
}
#define WRITE_MONO_RGBA_SPAN(bpp) \
static void write_mono_rgba_span_##bpp (const GLcontext *ctx, \
GLuint n, GLint x, GLint y, \
const GLchan color[4], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, offset, rgba = dv_color##bpp(color); \
\
offset = c->Buffer->width * FLIP(y) + x; \
if (mask) { \
/* draw some pixels */ \
for (i=0; i<n; i++, offset++) { \
if (mask[i]) { \
dv_putpixel##bpp(b, offset, rgba); \
} \
} \
} else { \
/* draw all pixels */ \
for (i=0; i<n; i++, offset++) { \
dv_putpixel##bpp(b, offset, rgba); \
} \
} \
}
/**********************************************************************/
/***** Read spans of pixels *****/
/**********************************************************************/
#define READ_RGBA_SPAN(bpp) \
static void read_rgba_span_##bpp (const GLcontext *ctx, GLuint n, GLint x, GLint y, \
GLubyte rgba[][4]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, offset; \
\
offset = c->Buffer->width * FLIP(y) + x; \
/* read all pixels */ \
for (i=0; i<n; i++, offset++) { \
dv_getrgba##bpp(b, offset, rgba[i]); \
} \
}
/**********************************************************************/
/***** Write arrays of pixels *****/
/**********************************************************************/
#define WRITE_RGBA_PIXELS(bpp) \
static void write_rgba_pixels_##bpp (const GLcontext *ctx, \
GLuint n, const GLint x[], const GLint y[], \
const GLubyte rgba[][4], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, w = c->Buffer->width, h = c->Buffer->height; \
\
if (mask) { \
/* draw some pixels */ \
for (i=0; i<n; i++) { \
if (mask[i]) { \
dv_putpixel##bpp(b, FLIP2(y[i])*w + x[i], dv_color##bpp(rgba[i])); \
} \
} \
} else { \
/* draw all pixels */ \
for (i=0; i<n; i++) { \
dv_putpixel##bpp(b, FLIP2(y[i])*w + x[i], dv_color##bpp(rgba[i])); \
} \
} \
}
#define WRITE_MONO_RGBA_PIXELS(bpp) \
static void write_mono_rgba_pixels_##bpp (const GLcontext *ctx, \
GLuint n, const GLint x[], const GLint y[], \
const GLchan color[4], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, w = c->Buffer->width, h = c->Buffer->height, rgba = dv_color##bpp(color); \
\
if (mask) { \
/* draw some pixels */ \
for (i=0; i<n; i++) { \
if (mask[i]) { \
dv_putpixel##bpp(b, FLIP2(y[i])*w + x[i], rgba); \
} \
} \
} else { \
/* draw all pixels */ \
for (i=0; i<n; i++) { \
dv_putpixel##bpp(b, FLIP2(y[i])*w + x[i], rgba); \
} \
} \
}
/**********************************************************************/
/***** Read arrays of pixels *****/
/**********************************************************************/
#define READ_RGBA_PIXELS(bpp) \
static void read_rgba_pixels_##bpp (const GLcontext *ctx, \
GLuint n, const GLint x[], const GLint y[], \
GLubyte rgba[][4], const GLubyte mask[]) \
{ \
DMesaContext c = (DMesaContext)ctx->DriverCtx; \
void *b = c->Buffer->the_window; \
GLuint i, w = c->Buffer->width, h = c->Buffer->height; \
\
if (mask) { \
/* read some pixels */ \
for (i=0; i<n; i++) { \
if (mask[i]) { \
dv_getrgba##bpp(b, FLIP2(y[i])*w + x[i], rgba[i]); \
} \
} \
} else { \
/* read all pixels */ \
for (i=0; i<n; i++) { \
dv_getrgba##bpp(b, FLIP2(y[i])*w + x[i], rgba[i]); \
} \
} \
}
#endif

549
src/mesa/drivers/dos/dvesa.c Normal file
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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#include <dpmi.h>
#include <string.h>
#include <stubinfo.h>
#include <sys/exceptn.h>
#include <sys/farptr.h>
#include <sys/segments.h>
#include "dvesa.h"
typedef struct dvmode {
int mode;
int xres, yres;
int scanlen;
int bpp;
word32 opaque;
} dvmode;
#define _16_ *(word16 *)&
#define _32_ *(word32 *)&
static int init;
static int selector = -1;
static int granularity;
static dvmode modes[128];
static void (*dv_putpixel) (void *buffer, int offset, int color);
int (*dv_color) (const unsigned char rgba[]);
void (*dv_dump_virtual) (void *buffer, int width, int height, int offset, int delta);
void (*dv_clear_virtual) (void *buffer, int len, int color);
extern void dv_dump_virtual_linear (void *buffer, int width, int height, int offset, int delta);
extern void dv_dump_virtual_banked (void *buffer, int width, int height, int offset, int delta);
extern void dv_clear_virtual16 (void *buffer, int len, int color);
extern void dv_clear_virtual24 (void *buffer, int len, int color);
extern void dv_clear_virtual32 (void *buffer, int len, int color);
/* lookup table for scaling 5 bit colors up to 8 bits */
int _rgb_scale_5[32] =
{
0, 8, 16, 24, 32, 41, 49, 57,
65, 74, 82, 90, 98, 106, 115, 123,
131, 139, 148, 156, 164, 172, 180, 189,
197, 205, 213, 222, 230, 238, 246, 255
};
/* lookup table for scaling 6 bit colors up to 8 bits */
int _rgb_scale_6[64] =
{
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 44, 48, 52, 56, 60,
64, 68, 72, 76, 80, 85, 89, 93,
97, 101, 105, 109, 113, 117, 121, 125,
129, 133, 137, 141, 145, 149, 153, 157,
161, 165, 170, 174, 178, 182, 186, 190,
194, 198, 202, 206, 210, 214, 218, 222,
226, 230, 234, 238, 242, 246, 250, 255
};
/*
* colors
*/
int dv_color15 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<10)|((rgba[1]>>3)<<5)|(rgba[2]>>3);
}
int dv_color16 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<11)|((rgba[1]>>2)<<5)|(rgba[2]>>3);
}
int dv_color32 (const unsigned char rgba[])
{
return (rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);
}
/*
* getpixel + decompose
*/
void dv_getrgba15 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
void dv_getrgba16 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
void dv_getrgba24 (void *buffer, int offset, unsigned char rgba[4])
{
int c = *(word32 *)(buffer+offset*3);
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
void dv_getrgba32 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word32 *)buffer)[offset];
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
/*
* request mapping from DPMI
*/
static word32 _map_linear (word32 phys, word32 len)
{
__dpmi_meminfo meminfo;
if (phys >= 0x100000) {
/* map into linear memory */
meminfo.address = (long)phys;
meminfo.size = len;
if (__dpmi_physical_address_mapping(&meminfo)) {
return 0;
}
return meminfo.address;
} else {
/* exploit 1 -> 1 physical to linear mapping in low megabyte */
return phys;
}
}
/*
* attempts to detect VESA and video modes
*/
static word16 dv_get_vesa (void)
{
__dpmi_regs r;
unsigned short *p;
dvmode *q;
char vesa_info[512], tmp[512];
_farpokel(_stubinfo->ds_selector, 0, 0x32454256);
r.x.ax = 0x4f00;
r.x.di = 0;
r.x.es = _stubinfo->ds_segment;
__dpmi_int(0x10, &r);
if (r.x.ax==0x004f) {
movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);
if ((_32_ vesa_info[0])==0x41534556) {
p = (unsigned short *)(((_16_ vesa_info[0x10])<<4) + (_16_ vesa_info[0x0e]));
q = modes;
do {
if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {
break;
}
r.x.ax = 0x4f01;
r.x.cx = q->mode;
r.x.di = 512;
r.x.es = _stubinfo->ds_segment;
__dpmi_int(0x10, &r);
movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);
switch (tmp[0x19]) {
case 16:
q->bpp = tmp[0x1f] + tmp[0x21] + tmp[0x23];
break;
case 15:
case 24:
case 32:
q->bpp = tmp[0x19];
break;
default:
q->bpp = 0;
}
if ((r.x.ax==0x004f)&&((tmp[0]&0x11)==0x11)&&q->bpp) {
q->xres = _16_ tmp[0x12];
q->yres = _16_ tmp[0x14];
q->scanlen = _16_ tmp[0x10];
q->opaque = (_16_ tmp[4])<<10;
if (tmp[0]&0x80) {
*(q+1) = *q++;
q->opaque = _32_ tmp[0x28];
q->mode |= 0x4000;
}
q++;
}
} while (!0);
return _16_ vesa_info[4];
}
}
return 0;
}
/*
* select a mode
*/
dvmode *dv_select_mode (int x, int y, int width, int height, int depth, int *delta, int *offset)
{
dvmode *p, *q;
unsigned int min;
if ((width&3)||(height&3)||(depth<=8)) {
return NULL;
}
if (!init) {
init = !init;
if (!dv_get_vesa()) {
return NULL;
}
}
for (min=-1, p=NULL, q=modes; q->mode!=0xffff; q++) {
if ((q->xres>=(x+width))&&(q->yres>=(y+height))&&(q->bpp==depth)) {
if (min>(unsigned)(q->xres*q->yres)) {
min = q->xres*q->yres;
p = q;
}
}
}
if (p) {
int sel = -1;
unsigned base, limit;
if ((p->mode|0x4000)==(p+1)->mode) {
p++;
}
if (selector==-1) {
if ((selector=sel=__dpmi_allocate_ldt_descriptors(1))==-1) {
return NULL;
}
}
if (p->mode&0x4000) {
limit = ((p->scanlen*p->yres+0xfffUL)&~0xfffUL) - 1;
if ((base=_map_linear(p->opaque, limit))==NULL) {
if (sel!=-1) {
selector = -1;
__dpmi_free_ldt_descriptor(sel);
}
return NULL;
}
dv_dump_virtual = dv_dump_virtual_linear;
} else {
limit = granularity = p->opaque;
base = 0xa0000;
dv_dump_virtual = dv_dump_virtual_banked;
}
__dpmi_set_segment_base_address(selector, base);
__dpmi_set_descriptor_access_rights(selector, ((_my_ds()&3)<<5)|0x4092);
__dpmi_set_segment_limit(selector, limit);
switch (p->bpp) {
case 15:
dv_clear_virtual = dv_clear_virtual16;
dv_putpixel = dv_putpixel16;
dv_color = dv_color15;
break;
case 16:
dv_clear_virtual = dv_clear_virtual16;
dv_putpixel = dv_putpixel16;
dv_color = dv_color16;
break;
case 24:
dv_clear_virtual = dv_clear_virtual24;
dv_putpixel = dv_putpixel24;
dv_color = dv_color32;
break;
case 32:
dv_clear_virtual = dv_clear_virtual32;
dv_putpixel = dv_putpixel32;
dv_color = dv_color32;
break;
default:
dv_clear_virtual = NULL;
dv_putpixel = NULL;
}
*delta = p->scanlen - ((depth+7)/8) * width;
*offset = p->scanlen*y + ((depth+7)/8) * x;
__asm__("movw $0x4f02, %%ax; int $0x10"::"b"(p->mode):"%eax");
}
return p;
}
/*
* fill rectangle
*/
void dv_fillrect (void *buffer, int bwidth, int x, int y, int width, int height, int color)
{
int i, offset;
offset = y*bwidth + x;
bwidth -= width;
for (height+=y; y<height; y++) {
for (i=0; i<width; i++, offset++) {
dv_putpixel(buffer, offset, color);
}
offset += bwidth;
}
}
/*
* dv_dump_virtual_linear
*/
__asm__("\n\
.balign 4 \n\
.global _dv_dump_virtual_linear \n\
_dv_dump_virtual_linear: \n\
pushl %fs \n\
pushl %ebx \n\
pushl %esi \n\
pushl %edi \n\
movl _selector, %fs \n\
movl 4*4+4+0(%esp), %esi \n\
movl 4*4+4+12(%esp), %edi \n\
movl 4*4+4+4(%esp), %ecx \n\
movl 4*4+4+8(%esp), %edx \n\
movl 4*4+4+16(%esp), %ebx \n\
shrl $2, %ecx \n\
.balign 4 \n\
0: \n\
pushl %ecx \n\
.balign 4 \n\
1: \n\
movl (%esi), %eax \n\
addl $4, %esi \n\
movl %eax, %fs:(%edi) \n\
addl $4, %edi \n\
decl %ecx \n\
jnz 1b \n\
popl %ecx \n\
addl %ebx, %edi \n\
decl %edx \n\
jnz 0b \n\
popl %edi \n\
popl %esi \n\
popl %ebx \n\
popl %fs \n\
ret");
/*
* dv_dump_virtual_banked
*/
__asm__("\n\
.balign 4 \n\
.global _dv_dump_virtual_banked \n\
_dv_dump_virtual_banked: \n\
pushl %fs \n\
pushl %ebx \n\
pushl %esi \n\
pushl %edi \n\
pushl %ebp \n\
movl _selector, %fs \n\
movl 4*5+4+0(%esp), %esi \n\
movl _granularity, %ebp \n\
xorl %edx, %edx \n\
movl 4*5+4+12(%esp), %eax \n\
divl %ebp \n\
movl %edx, %edi \n\
pushl %eax \n\
movl %eax, %edx \n\
xorl %ebx, %ebx \n\
movw $0x4f05, %ax \n\
int $0x10 \n\
movl 4*6+4+16(%esp), %ebx \n\
movl 4*6+4+4(%esp), %ecx \n\
movl 4*6+4+8(%esp), %edx \n\
shrl $2, %ecx \n\
.balign 4 \n\
0: \n\
pushl %ecx \n\
.balign 4 \n\
1: \n\
cmpl %ebp, %edi \n\
jb 2f \n\
pushl %ebx \n\
pushl %edx \n\
incl 12(%esp) \n\
movw $0x4f05, %ax \n\
movl 12(%esp), %edx \n\
xorl %ebx, %ebx \n\
int $0x10 \n\
popl %edx \n\
popl %ebx \n\
subl %ebp, %edi \n\
2: \n\
movl (%esi), %eax \n\
addl $4, %esi \n\
movl %eax, %fs:(%edi) \n\
addl $4, %edi \n\
decl %ecx \n\
jnz 1b \n\
popl %ecx \n\
addl %ebx, %edi \n\
decl %edx \n\
jnz 0b \n\
popl %eax \n\
popl %ebp \n\
popl %edi \n\
popl %esi \n\
popl %ebx \n\
popl %fs \n\
ret");
/*
* dv_clear_virtual??
*/
__asm__("\n\
.balign 4 \n\
.global _dv_clear_virtual16 \n\
_dv_clear_virtual16: \n\
movl 12(%esp), %eax \n\
pushw %ax \n\
pushw %ax \n\
popl %eax \n\
jmp _dv_clear_virtual_common\n\
.balign 4 \n\
.global _dv_clear_virtual32 \n\
_dv_clear_virtual32: \n\
movl 12(%esp), %eax \n\
\n\
.balign 4 \n\
.global _dv_clear_virtual_common\n\
_dv_clear_virtual_common: \n\
movl 8(%esp), %ecx \n\
movl 4(%esp), %edx \n\
shrl $2, %ecx \n\
.balign 4 \n\
0: \n\
movl %eax, (%edx) \n\
addl $4, %edx \n\
decl %ecx \n\
jnz 0b \n\
ret");
__asm__("\n\
.balign 4 \n\
.global _dv_clear_virtual24 \n\
_dv_clear_virtual24: \n\
movl 8(%esp), %edx \n\
movl $0xaaaaaaab, %eax \n\
mull %edx \n\
movl 12(%esp), %eax \n\
movl %edx, %ecx \n\
movl 4(%esp), %edx \n\
pushl %ebx \n\
shrl %ecx \n\
movb 18(%esp), %bl \n\
.balign 4 \n\
0: \n\
movw %ax, (%edx) \n\
movb %bl, 2(%edx) \n\
addl $3, %edx \n\
decl %ecx \n\
jnz 0b \n\
popl %ebx \n\
ret");
/*
* dv_putpixel??
*/
__asm__("\n\
.balign 4 \n\
.global _dv_putpixel16 \n\
_dv_putpixel16: \n\
movl 8(%esp), %edx \n\
shll %edx \n\
movl 12(%esp), %eax \n\
addl 4(%esp), %edx \n\
movw %ax, (%edx) \n\
ret");
__asm__("\n\
.balign 4 \n\
.global _dv_putpixel32 \n\
_dv_putpixel32: \n\
movl 8(%esp), %edx \n\
shll $2, %edx \n\
movl 12(%esp), %eax \n\
addl 4(%esp), %edx \n\
movl %eax, (%edx) \n\
ret");
__asm__("\n\
.global _dv_putpixel24 \n\
_dv_putpixel24: \n\
movl 8(%esp), %edx \n\
leal (%edx, %edx, 2), %edx \n\
movl 12(%esp), %eax \n\
addl 4(%esp), %edx \n\
movw %ax, (%edx) \n\
shrl $16, %eax \n\
movb %al, 2(%edx) \n\
ret");

127
src/mesa/drivers/dos/dvesa.h Normal file
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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#ifndef DVESA_H_included
#define DVESA_H_included
typedef unsigned char word8;
typedef unsigned short word16;
typedef unsigned long word32;
struct dvmode;
extern int (*dv_color) (const unsigned char rgba[]);
extern void (*dv_dump_virtual) (void *buffer, int width, int height, int offset, int delta);
extern void (*dv_clear_virtual) (void *buffer, int len, int color);
struct dvmode *dv_select_mode (int x, int y, int width, int height, int depth, int *delta, int *offset);
void dv_fillrect (void *buffer, int bwidth, int x, int y, int width, int height, int color);
/*
* not so public...
*/
extern int _rgb_scale_5[32];
extern int _rgb_scale_6[64];
/*
* dv_putpixel inlines
*/
#define dv_putpixel15 dv_putpixel16
extern __inline__ void dv_putpixel16 (void *buffer, int offset, int color)
{
((word16 *)buffer)[offset] = (word16)color;
}
extern __inline__ void dv_putpixel24 (void *buffer, int offset, int color)
{
*(word16 *)(buffer+offset*3) = (word16)color;
*(word8 *)(buffer+offset*3+2) = (word8)(color>>16);
}
extern __inline__ void dv_putpixel32 (void *buffer, int offset, int color)
{
((word32 *)buffer)[offset] = color;
}
/*
* dv_color inlines
*/
extern __inline__ int dv_color15 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<10)|((rgba[1]>>3)<<5)|(rgba[2]>>3);
}
extern __inline__ int dv_color16 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<11)|((rgba[1]>>2)<<5)|(rgba[2]>>3);
}
#define dv_color24 dv_color32
extern __inline__ int dv_color32 (const unsigned char rgba[])
{
return (rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);
}
/*
* dv_getrgba inlines
*/
extern __inline__ void dv_getrgba15 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
extern __inline__ void dv_getrgba16 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
extern __inline__ void dv_getrgba24 (void *buffer, int offset, unsigned char rgba[4])
{
int c = *(word32 *)(buffer+offset*3);
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
extern __inline__ void dv_getrgba32 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word32 *)buffer)[offset];
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
#endif

163
src/mesa/main/Makefile.DJ Normal file
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# DOS/DJGPP core makefile v0.1 for Mesa 4.0.x
#
# Copyright (C) 2002 - Borca Daniel
# Email : dborca@yahoo.com
# Web : http://www.geocities.com/dborca
.PHONY: all clean
TOP = ..
CC = gcc
CFLAGS = -I$(TOP)/include -I. -Wall -W -Wno-unused -mcpu=pentium -ffast-math -O2
AR = ar
ARFLAGS = ruv
LIBDIR = $(TOP)/lib
GL_LIB = libgl.a
CORE_SOURCES = \
accum.c \
api_arrayelt.c \
api_loopback.c \
api_noop.c \
api_validate.c \
array_cache/ac_context.c \
array_cache/ac_import.c \
attrib.c \
blend.c \
buffers.c \
clip.c \
colortab.c \
config.c \
context.c \
convolve.c \
debug.c \
depth.c \
dispatch.c \
dlist.c \
drawpix.c \
enable.c \
enums.c \
eval.c \
extensions.c \
feedback.c \
fog.c \
get.c \
glapi.c \
glthread.c \
hash.c \
hint.c \
histogram.c \
image.c \
imports.c \
light.c \
lines.c \
math/m_debug_clip.c \
math/m_debug_norm.c \
math/m_debug_vertex.c \
math/m_debug_xform.c \
math/m_eval.c \
math/m_matrix.c \
math/m_translate.c \
math/m_vector.c \
math/m_vertices.c \
math/m_xform.c \
matrix.c \
mem.c \
mmath.c \
pixel.c \
points.c \
polygon.c \
rastpos.c \
state.c \
stencil.c \
swrast/s_aaline.c \
swrast/s_aatriangle.c \
swrast/s_accum.c \
swrast/s_alpha.c \
swrast/s_alphabuf.c \
swrast/s_bitmap.c \
swrast/s_blend.c \
swrast/s_buffers.c \
swrast/s_context.c \
swrast/s_copypix.c \
swrast/s_depth.c \
swrast/s_drawpix.c \
swrast/s_feedback.c \
swrast/s_fog.c \
swrast/s_histogram.c \
swrast/s_imaging.c \
swrast/s_lines.c \
swrast/s_logic.c \
swrast/s_masking.c \
swrast/s_pb.c \
swrast/s_pixeltex.c \
swrast/s_points.c \
swrast/s_readpix.c \
swrast/s_scissor.c \
swrast/s_span.c \
swrast/s_stencil.c \
swrast/s_texstore.c \
swrast/s_texture.c \
swrast/s_triangle.c \
swrast/s_zoom.c \
swrast_setup/ss_context.c \
swrast_setup/ss_triangle.c \
swrast_setup/ss_vb.c \
texformat.c \
teximage.c \
texobj.c \
texstate.c \
texstore.c \
texutil.c \
tnl/t_array_api.c \
tnl/t_array_import.c \
tnl/t_context.c \
tnl/t_eval_api.c \
tnl/t_imm_alloc.c \
tnl/t_imm_api.c \
tnl/t_imm_debug.c \
tnl/t_imm_dlist.c \
tnl/t_imm_elt.c \
tnl/t_imm_eval.c \
tnl/t_imm_exec.c \
tnl/t_imm_fixup.c \
tnl/t_pipeline.c \
tnl/t_vb_fog.c \
tnl/t_vb_light.c \
tnl/t_vb_normals.c \
tnl/t_vb_points.c \
tnl/t_vb_render.c \
tnl/t_vb_texgen.c \
tnl/t_vb_texmat.c \
tnl/t_vb_vertex.c \
varray.c \
vtxfmt.c
DRIVER_SOURCES = DOS/dmesa.c DOS/dvesa.c
SOURCES = $(CORE_SOURCES) $(DRIVER_SOURCES)
OBJECTS = $(SOURCES:.c=.o)
.c.o:
gcc -o $@ -c $(CFLAGS) $<
all: $(LIBDIR)/$(GL_LIB)
$(LIBDIR)/$(GL_LIB): $(OBJECTS)
$(AR) $(ARFLAGS) $(LIBDIR)/$(GL_LIB) $(OBJECTS)
clean:
-$(RM) *.o
-$(RM) DOS\*.o
include depend
DOS/dmesa.o: DOS/dmesa.c glheader.h ../include/GL/gl.h context.h glapi.h \
mtypes.h config.h glapitable.h glthread.h math/m_matrix.h dd.h \
../include/GL/dmesa.h matrix.h texformat.h texstore.h array_cache/acache.h \
swrast/swrast.h swrast_setup/swrast_setup.h tnl/tnl.h tnl/t_context.h \
math/m_vector.h math/m_xform.h tnl/t_pipeline.h DOS/dvesa.h DOS/dmesaint.h
DOS/dvesa.o: DOS/dvesa.c DOS/dvesa.h