DOS driver updates from Daniel Borca

3 files changed, 78 insertions, 126 deletions

diff --git a/docs/README.DJ b/docs/README.DJ
index e20454a3d2e..8b3a0f5998b 100644
--- a/docs/README.DJ
+++ b/docs/README.DJ
@@ -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

 

 

 

diff --git a/src/mesa/drivers/dos/dmesa.c b/src/mesa/drivers/dos/dmesa.c
index 5ab323d33a9..454b891c08b 100644
--- a/src/mesa/drivers/dos/dmesa.c
+++ b/src/mesa/drivers/dos/dmesa.c
@@ -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 : [email protected]

@@ -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 */

@@ -290,24 +284,17 @@ 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)					\

-   GLuint i, offset = FLIP2(span.y)*w + span.x;			\

-   for (i = 0; i < span.count; i++, offset++) {			\

-       vl_putpixel(b, offset, rgb);				\

-   }

+ GLuint i, offset = FLIP2(span.y)*w + span.x;			\

+ for (i = 0; i < span.count; i++, offset++) {			\

+     vl_putpixel(b, offset, rgb);				\

+ }

 

 #include "swrast/s_tritemp.h"

- }

 }

 

 

@@ -322,22 +309,22 @@ 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

 #define SETUP_CODE GLuint rgb = vl_mixrgb(v2->color);

 

 #define RENDER_SPAN(span)					\

-   GLuint i, offset = FLIP2(span.y)*w + span.x;			\

-   for (i = 0; i < span.count; i++, offset++) {			\

-       const DEPTH_TYPE z = FixedToDepth(span.z);		\

-       if (z < zRow[i]) {					\

-          vl_putpixel(b, offset, rgb);				\

-          zRow[i] = z;						\

-       }							\

-       span.z += span.zStep;					\

-   }

+ GLuint i, offset = FLIP2(span.y)*w + span.x;			\

+ for (i = 0; i < span.count; i++, offset++) {			\

+     const DEPTH_TYPE z = FixedToDepth(span.z);			\

+     if (z < zRow[i]) {						\

+        vl_putpixel(b, offset, rgb);				\

+        zRow[i] = z;						\

+     }								\

+     span.z += span.zStep;					\

+ }

 

 #include "swrast/s_tritemp.h"

 }

@@ -354,21 +341,21 @@ 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)					\

-   GLuint i, offset = FLIP2(span.y)*w + span.x;			\

-   for (i = 0; i < span.count; i++, offset++) {			\

-       unsigned char rgb[3];					\

-       rgb[0] = FixedToInt(span.red);				\

-       rgb[1] = FixedToInt(span.green);				\

-       rgb[2] = FixedToInt(span.blue);				\

-       vl_putpixel(b, offset, vl_mixrgb(rgb));			\

-       span.red += span.redStep;				\

-       span.green += span.greenStep;				\

-       span.blue += span.blueStep;				\

-   }

+ GLuint i, offset = FLIP2(span.y)*w + span.x;			\

+ for (i = 0; i < span.count; i++, offset++) {			\

+     unsigned char rgb[3];					\

+     rgb[0] = FixedToInt(span.red);				\

+     rgb[1] = FixedToInt(span.green);				\

+     rgb[2] = FixedToInt(span.blue);				\

+     vl_putpixel(b, offset, vl_mixrgb(rgb));			\

+     span.red += span.redStep;					\

+     span.green += span.greenStep;				\

+     span.blue += span.blueStep;				\

+ }

 

 #include "swrast/s_tritemp.h"

 }

@@ -385,29 +372,29 @@ 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

 #define INTERP_RGB 1

 

 #define RENDER_SPAN(span)					\

-   GLuint i, offset = FLIP2(span.y)*w + span.x;			\

-   for (i = 0; i < span.count; i++, offset++) {			\

-       const DEPTH_TYPE z = FixedToDepth(span.z);		\

-       if (z < zRow[i]) {					\

-          unsigned char rgb[3];					\

-          rgb[0] = FixedToInt(span.red);			\

-          rgb[1] = FixedToInt(span.green);			\

-          rgb[2] = FixedToInt(span.blue);			\

-          vl_putpixel(b, offset, vl_mixrgb(rgb));		\

-          zRow[i] = z;						\

-       }							\

-       span.red += span.redStep;				\

-       span.green += span.greenStep;				\

-       span.blue += span.blueStep;				\

-       span.z += span.zStep;					\

-   }

+ GLuint i, offset = FLIP2(span.y)*w + span.x;			\

+ for (i = 0; i < span.count; i++, offset++) {			\

+     const DEPTH_TYPE z = FixedToDepth(span.z);			\

+     if (z < zRow[i]) {						\

+        unsigned char rgb[3];					\

+        rgb[0] = FixedToInt(span.red);				\

+        rgb[1] = FixedToInt(span.green);			\

+        rgb[2] = FixedToInt(span.blue);				\

+        vl_putpixel(b, offset, vl_mixrgb(rgb));			\

+        zRow[i] = z;						\

+     }								\

+     span.red += span.redStep;					\

+     span.green += span.greenStep;				\

+     span.blue += span.blueStep;				\

+     span.z += span.zStep;					\

+ }

 

 #include "swrast/s_tritemp.h"

 }

@@ -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);

-          } else {

-             vl_clear(b->the_window, 0, 0, b->width, b->height, c->ClearColor);

-          }

+          vl_clear(b->the_window, b->len, 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);

- }

+ 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);

 }

diff --git a/src/mesa/main/Makefile.DJ b/src/mesa/main/Makefile.DJ
index e6be4205d6a..214882d1cfa 100644
--- a/src/mesa/main/Makefile.DJ
+++ b/src/mesa/main/Makefile.DJ
@@ -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