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DOS driver updates from Daniel Borca

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This commit is contained in:
Brian Paul
2002-03-08 19:27:17 +00:00
parent 7fd50afbbf
commit b43a828ad4
3 changed files with 78 additions and 126 deletions
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24
docs/README.DJ
View File

@@ -1,4 +1,4 @@
Mesa 4.0.1 DOS/DJGPP Port version 0.2
Mesa 4.0.1 DOS/DJGPP Port version 0.3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -6,13 +6,7 @@
Description:
~~~~~~~~~~~~
This is the DOS port of MESA 4.0, for DJGPP programmers... It features some
sort of hardware acceleration, but it's pretty thin: it is entirely based on
VBEAF.DRV from the FreeBE/AF project (http://www.talula.demon.co.uk/freebe/).
Note that SciTech's driver isn't supported because I hate the `nearptr' hack.
Anyway, these drivers don't provide ANY 3D function :-( Moreover, it seems to
me the FreeBE/AF project is not really up to date... Well, it's not much, my
intention was to open the door ;-)
Well, guess what... this is the DOS port of MESA 4.0, for DJGPP fans... Whoa!
@@ -54,17 +48,11 @@ 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. Double-buffered uses page flipping if acceleration is available, else falls
back to virtual buffer.
3. Single-buffered is not allowed with 24-bit modes, because direct access was
wrong and fixing it would mean to slow down the other routines; until this
is really, really necessary, it won't get reimplemented.
4. Another weird "feature" is that buffer width must be multiple of 4 (I'm a
2. Single-buffered is not allowed at all. Until I can find a way to use *REAL*
hardware acceleration, it won't get implemented.
3. Another weird "feature" is that buffer width must be multiple of 4 (I'm a
lazy programmer and I found that the easiest way to keep buffer handling at
peak performance ;-).
5. The FreeBE/AF driver is searched in the current directory only; therefore,
to disable hardware acceleration, make sure you don't have VBEAF.DRV where
your application resides.
@@ -123,6 +111,8 @@ v0.2 feb-2002 + fast triangle rasterizers
+ glut has now an internal timer
* glut changed to support multi-window (unfinished)
! minor PC_HW corrections
v0.3 mar-2002 - removed FreeBE/AF code
- removed single-buffer modes

91
src/mesa/drivers/dos/dmesa.c
View File

@@ -23,7 +23,7 @@
*/
/*
* DOS/DJGPP device driver v0.2 for Mesa 4.0
* DOS/DJGPP device driver v0.3 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
@@ -66,10 +66,9 @@
*/
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) */
GLint caps; /* video mode capabilities */
};
/*
@@ -82,12 +81,7 @@ struct dmesa_buffer {
int xpos, ypos; /* position */
int width, height; /* size in pixels */
int pitch, len; /* number of bytes in a line, then total */
int cwidth; /* scan width */
int caps; /* video mode capabilities */
void (*tri_rgb_flat) ();
int bwidth, len; /* bytes in a line, then total */
};
/*
@@ -126,7 +120,7 @@ static void write_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
void *b = c->Buffer->the_window;
GLuint i, offset;
offset = c->Buffer->cwidth * FLIP(y) + x;
offset = c->Buffer->width * FLIP(y) + x;
if (mask) {
/* draw some pixels */
for (i=0; i<n; i++, offset++) {
@@ -149,7 +143,7 @@ static void write_rgb_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
void *b = c->Buffer->the_window;
GLuint i, offset;
offset = c->Buffer->cwidth * FLIP(y) + x;
offset = c->Buffer->width * FLIP(y) + x;
if (mask) {
/* draw some pixels */
for (i=0; i<n; i++, offset++) {
@@ -173,7 +167,7 @@ static void write_mono_rgba_span (const GLcontext *ctx,
void *b = c->Buffer->the_window;
GLuint i, offset, rgba = vl_mixrgba(color);
offset = c->Buffer->cwidth * FLIP(y) + x;
offset = c->Buffer->width * FLIP(y) + x;
if (mask) {
/* draw some pixels */
for (i=0; i<n; i++, offset++) {
@@ -196,7 +190,7 @@ static void read_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
void *b = c->Buffer->the_window;
GLuint i, offset;
offset = c->Buffer->cwidth * FLIP(y) + x;
offset = c->Buffer->width * FLIP(y) + x;
/* read all pixels */
for (i=0; i<n; i++, offset++) {
vl_getrgba(b, offset, rgba[i]);
@@ -209,7 +203,7 @@ static void write_rgba_pixels (const GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint i, w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint i, w = c->Buffer->width, h = c->Buffer->height;
if (mask) {
/* draw some pixels */
@@ -232,7 +226,7 @@ static void write_mono_rgba_pixels (const GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint i, w = c->Buffer->cwidth, h = c->Buffer->height, rgba = vl_mixrgba(color);
GLuint i, w = c->Buffer->width, h = c->Buffer->height, rgba = vl_mixrgba(color);
if (mask) {
/* draw some pixels */
@@ -255,7 +249,7 @@ static void read_rgba_pixels (const GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint i, w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint i, w = c->Buffer->width, h = c->Buffer->height;
if (mask) {
/* read some pixels */
@@ -290,14 +284,8 @@ static void tri_rgb_flat (GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint w = c->Buffer->width, h = c->Buffer->height;
if (c->Buffer->tri_rgb_flat) {
c->Buffer->tri_rgb_flat(IROUND(v0->win[0]), IROUND(FLIP2(v0->win[1])),
IROUND(v1->win[0]), IROUND(FLIP2(v1->win[1])),
IROUND(v2->win[0]), IROUND(FLIP2(v2->win[1])),
vl_mixrgb(v2->color));
} else {
#define SETUP_CODE GLuint rgb = vl_mixrgb(v2->color);
#define RENDER_SPAN(span) \
@@ -308,7 +296,6 @@ static void tri_rgb_flat (GLcontext *ctx,
#include "swrast/s_tritemp.h"
}
}
@@ -322,7 +309,7 @@ static void tri_rgb_flat_z (GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint w = c->Buffer->width, h = c->Buffer->height;
#define INTERP_Z 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
@@ -354,7 +341,7 @@ static void tri_rgb_smooth (GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint w = c->Buffer->width, h = c->Buffer->height;
#define INTERP_RGB 1
#define RENDER_SPAN(span) \
@@ -385,7 +372,7 @@ static void tri_rgb_smooth_z (GLcontext *ctx,
{
DMesaContext c = (DMesaContext)ctx->DriverCtx;
void *b = c->Buffer->the_window;
GLuint w = c->Buffer->cwidth, h = c->Buffer->height;
GLuint w = c->Buffer->width, h = c->Buffer->height;
#define INTERP_Z 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
@@ -505,26 +492,12 @@ static void clear (GLcontext *ctx, GLbitfield mask, GLboolean all,
if (*colorMask==0xffffffff) {
if (mask & DD_BACK_LEFT_BIT) {
if (all) {
if CHECK_SOFTDB(b->caps) {
vl_clear_virtual(b->the_window, b->len, c->ClearColor);
vl_clear(b->the_window, b->len, c->ClearColor);
} else {
vl_clear(b->the_window, 0, 0, b->width, b->height, c->ClearColor);
}
} else {
vl_clear(b->the_window, x, y, width, height, c->ClearColor);
vl_rect(b->the_window, x, y, width, height, c->ClearColor);
}
mask &= ~DD_BACK_LEFT_BIT;
}
if (mask & DD_FRONT_LEFT_BIT) {
if (all) {
x = 0;
y = 0;
width = b->width;
height = b->height;
}
vl_clear(b->the_window, x, y, width, height, c->ClearColor);
mask &= ~DD_FRONT_LEFT_BIT;
}
}
if (mask) {
@@ -553,7 +526,7 @@ static void set_read_buffer (GLcontext *ctx, GLframebuffer *buffer,
*/
static GLboolean set_draw_buffer (GLcontext *ctx, GLenum mode)
{
if (mode==GL_BACK_LEFT || mode==GL_FRONT_LEFT) {
if (mode==GL_BACK_LEFT) {
return GL_TRUE;
} else {
return GL_FALSE;
@@ -756,8 +729,10 @@ DMesaVisual DMesaCreateVisual (GLint width, GLint height, GLint colDepth,
{
DMesaVisual v;
GLint redBits, greenBits, blueBits, alphaBits;
GLint caps;
if (!dbFlag) {
return NULL;
}
alphaBits = 0;
switch (colDepth) {
case 15:
@@ -781,11 +756,7 @@ DMesaVisual DMesaCreateVisual (GLint width, GLint height, GLint colDepth,
return NULL;
}
caps = 0;
if (!dbFlag) {
caps |= VL_SINGLE;
}
if (vl_video_init(width, height, colDepth, &caps)!=0) {
if (vl_video_init(width, height, colDepth)!=0) {
return NULL;
}
@@ -808,7 +779,7 @@ DMesaVisual DMesaCreateVisual (GLint width, GLint height, GLint colDepth,
1); /* numSamples */
v->depth = colDepth;
v->caps = caps;
v->db_flag = dbFlag;
}
return v;
@@ -818,7 +789,7 @@ DMesaVisual DMesaCreateVisual (GLint width, GLint height, GLint colDepth,
void DMesaDestroyVisual (DMesaVisual v)
{
vl_video_exit();
vl_video_exit(!0);
_mesa_destroy_visual(v->gl_visual);
free(v);
}
@@ -841,12 +812,9 @@ DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,
b->xpos = xpos;
b->ypos = ypos;
b->width = width;
b->bwidth = width * ((visual->depth+7)/8);
b->height = height;
b->caps = visual->caps;
b->pitch = b->width*((visual->depth+7)/8);
b->len = b->pitch*b->height;
b->tri_rgb_flat = vl_getprim(TRI_RGB_FLAT);
b->len = b->bwidth * b->height;
}
return b;
@@ -856,9 +824,7 @@ DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,
void DMesaDestroyBuffer (DMesaBuffer b)
{
if CHECK_SOFTDB(b->caps) {
free(b->the_window);
}
_mesa_destroy_framebuffer(b->gl_buffer);
free(b);
}
@@ -911,13 +877,10 @@ void DMesaDestroyContext (DMesaContext c)
GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b)
{
if (c&&b) {
void *ptr = vl_sync_buffer(b->the_window, b->xpos, b->ypos, b->width, b->height, &b->cwidth);
if (b->cwidth==-1) {
if ((b->the_window=vl_sync_buffer(b->the_window, b->xpos, b->ypos, b->width, b->height))==NULL) {
return GL_FALSE;
}
b->the_window = ptr;
c->Buffer = b;
dmesa_update_state(c->gl_ctx, 0);
@@ -939,5 +902,5 @@ GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b)
void DMesaSwapBuffers (DMesaBuffer b)
{
/* copy/swap back buffer to front if applicable */
b->the_window = vl_flip(b->the_window, b->width, b->height, b->pitch);
vl_flip(b->the_window, b->bwidth, b->height);
}

7
src/mesa/main/Makefile.DJ
View File

@@ -157,7 +157,7 @@ CORE_SOURCES = \
tnl/t_vb_texmat.c \
tnl/t_vb_vertex.c
DRIVER_SOURCES = DOS/dmesa.c DOS/video.c DOS/vbeaf.c DOS/dpmi.c
DRIVER_SOURCES = DOS/dmesa.c DOS/video.c DOS/dpmi.c
SOURCES = $(CORE_SOURCES) $(DRIVER_SOURCES)
@@ -184,6 +184,5 @@ DOS/dmesa.o: DOS/dmesa.c glheader.h ../include/GL/gl.h context.h glapi.h \
swrast/s_depth.h swrast/s_lines.h swrast/s_triangle.h swrast/s_trispan.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/video.h swrast/s_tritemp.h
DOS/dpmi.o: DOS/dpmi.c DOS/vbeaf.h DOS/dpmiint.h
DOS/vbeaf.o: DOS/vbeaf.c DOS/dpmiint.h DOS/vbeaf.h DOS/video.h
DOS/video.o: DOS/video.c DOS/video.h DOS/dpmiint.h DOS/vbeafint.h DOS/vbeaf.h
DOS/dpmi.o: DOS/dpmi.c DOS/dpmiint.h
DOS/video.o: DOS/video.c DOS/video.h DOS/dpmiint.h