DOS updates

src/mesa/drivers/dos/vesa/blit.S

@@ -0,0 +1,199 @@
+/*
+ * 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 v1.3 for Mesa 5.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+		.file	"blit.S"
+
+/*
+ * extern unsigned int vesa_gran_mask, vesa_gran_shift;
+ * extern int vl_video_selector;
+
+ * extern void *vl_current_draw_buffer;
+ * extern int vl_current_stride, vl_current_height;
+ * extern int vl_current_offset, vl_current_delta;
+ */
+
+		.text
+
+/* Desc: VESA bank switching routine (BIOS)
+ *
+ * In  : EBX=0, EDX = bank number
+ * Out : -
+ *
+ * Note: thrashes EAX
+ */
+		.p2align 5,,31
+_vesa_swbankBIOS:
+		movw	$0x4f05, %ax
+		int	$0x10
+		ret
+
+		.p2align 2,,3
+		.global	_vesa_swbank
+_vesa_swbank:	.long	_vesa_swbankBIOS
+
+/* Desc: void vesa_b_dump_virtual (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_b_dump_virtual
+_vesa_b_dump_virtual:
+		cld
+		pushl	%es
+		pushl	%ebx
+		pushl	%esi
+		pushl	%edi
+		pushl	%ebp
+		movl	_vl_video_selector, %es
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vesa_gran_shift, %ecx
+		movl	_vesa_gran_mask, %ebp
+		movl	%edi, %edx
+		xorl	%ebx, %ebx
+		andl	%ebp, %edi
+		shrl	%cl, %edx
+		incl	%ebp
+		call	*_vesa_swbank
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %eax
+		movl	_vl_current_delta, %ebx
+		shrl	$2, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		cmpl	%ebp, %edi
+		jb	2f
+		pushl	%eax
+		pushl	%ebx
+		incl	%edx
+		xorl	%ebx, %ebx
+		call	*_vesa_swbank
+		popl	%ebx
+		popl	%eax
+		subl	%ebp, %edi
+		.balign	4
+	2:
+		movsl
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%ebx, %edi
+		decl	%eax
+		jnz	0b
+		popl	%ebp
+		popl	%edi
+		popl	%esi
+		popl	%ebx
+		popl	%es
+		ret
+
+/* Desc: void vesa_l_dump_virtual (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_l_dump_virtual
+_vesa_l_dump_virtual:
+		cld
+		pushl	%es
+		pushl	%esi
+		pushl	%edi
+		movl	_vl_video_selector, %es
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %edx
+		movl	_vl_current_delta, %eax
+		shrl	$2, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		rep;	movsl
+		popl	%ecx
+		addl	%eax, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		popl	%es
+		ret
+
+/* Desc: void vesa_l_dump_virtual_mmx (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_l_dump_virtual_mmx
+_vesa_l_dump_virtual_mmx:
+#ifdef USE_MMX_ASM
+		pushl	%esi
+		pushl	%edi
+		movl	_vl_video_selector, %fs
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %edx
+		movl	_vl_current_delta, %eax
+		shrl	$3, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		movq	(%esi), %mm0
+		addl	$8, %esi
+		movq	%mm0, %fs:(%edi)
+		addl	$8, %edi
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%eax, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		emms
+#endif
+		ret

src/mesa/drivers/dos/vga/vga.c

@@ -0,0 +1,226 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  4.1
+ * 
+ * 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 v1.3 for Mesa 5.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <stdlib.h>
+
+#include "vga.h"
+
+
+
+static vl_mode modes[4] = {
+       {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200},
+       {0xffff, -1, -1, -1, -1, -1, -1}
+};
+
+static word16 vga_ver;
+static int linear_selector;
+static int oldmode = -1;
+
+#define vga_color_precision 6
+
+
+
+/* Desc: Attempts to detect VGA, check video modes and create selectors.
+ *
+ * In  : -
+ * Out : mode array
+ *
+ * Note: -
+ */
+static vl_mode *vga_init (void)
+{
+ int rv = 0;
+
+ if (vga_ver) {
+    return modes;
+ }
+
+ __asm("\n\
+		movw	$0x1a00, %%ax	\n\
+		int	$0x10		\n\
+		cmpb	$0x1a, %%al	\n\
+		jne	0f		\n\
+		cmpb	$0x07, %%bl	\n\
+		jb	0f		\n\
+		andl	$0xff, %%ebx	\n\
+		movl	%%ebx, %0	\n\
+ 0:":"=g"(rv)::"%eax", "%ebx");
+ if (rv == 0) {
+    return NULL;
+ }
+
+ if (_create_selector(&linear_selector, 0xa0000, 0x10000)) {
+    return NULL;
+ }
+
+ modes[0].sel = linear_selector;
+
+ vga_ver = rv;
+ return modes;
+}
+
+
+
+/* Desc: Frees all resources allocated by VGA init code.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vga_finit (void)
+{
+ if (vga_ver) {
+    _remove_selector(&linear_selector);
+ }
+}
+
+
+
+/* Desc: Attempts to enter specified video mode.
+ *
+ * In  : ptr to mode structure, refresh rate
+ * Out : 0 if success
+ *
+ * Note: -
+ */
+static int vga_entermode (vl_mode *p, int refresh)
+{
+ if (!(p->mode & 0x4000)) {
+    return -1;
+ }
+ VGA.blit = vl_can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;
+
+ if (oldmode == -1) {
+    __asm("\n\
+		movb	$0x0f, %%ah	\n\
+		int	$0x10		\n\
+		andl	$0xff, %%eax	\n\
+		movl	%%eax, %0	\n\
+    ":"=g"(oldmode)::"%eax", "%ebx");
+ }
+
+ __asm("int $0x10"::"a"(p->mode&0xff));
+
+ return 0;
+}
+
+
+
+/* Desc: Restores to the mode prior to first call to vga_entermode.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vga_restore (void)
+{
+ if (oldmode != -1) {
+    __asm("int $0x10"::"a"(oldmode));
+ }
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses normalized values
+ */
+static void vga_setCI_f (int index, float red, float green, float blue)
+{
+ float max = (1 << vga_color_precision) - 1;
+
+ int _red = red * max;
+ int _green = green * max;
+ int _blue = blue * max;
+
+ __asm("\n\
+		movw $0x1010, %%ax	\n\
+		movb %1, %%dh		\n\
+		movb %2, %%ch		\n\
+		int  $0x10		\n\
+ "::"b"(index), "m"(_red), "m"(_green), "c"(_blue):"%eax", "%edx");
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses integer values
+ */
+static void vga_setCI_i (int index, int red, int green, int blue)
+{
+ __asm("\n\
+		movw $0x1010, %%ax	\n\
+		movb %1, %%dh		\n\
+		movb %2, %%ch		\n\
+		int  $0x10		\n\
+"::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");
+}
+
+
+
+/* Desc: retrieve CI precision
+ *
+ * In  : -
+ * Out : precision in bits
+ *
+ * Note: -
+ */
+static int vga_getCIprec (void)
+{
+ return vga_color_precision;
+}
+
+
+
+/*
+ * the driver
+ */
+vl_driver VGA = {
+          vga_init,
+          vga_entermode,
+          NULL,
+          vga_setCI_f,
+          vga_setCI_i,
+          vga_getCIprec,
+          vga_restore,
+          vga_finit
+};

src/mesa/drivers/dos/vga/vga.h

@@ -0,0 +1,42 @@
+/*
+ * 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 v1.3 for Mesa 5.0
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef VGA_H_included
+#define VGA_H_included
+
+#include "../internal.h"
+#include "../vesa/vesa.h"
+
+extern vl_driver VGA;
+
+#endif