-/*\r
- * Mesa 3-D graphics library\r
- * Version: 4.1\r
- * \r
- * Copyright (C) 1999 Brian Paul All Rights Reserved.\r
- * \r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- * \r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- * \r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN\r
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-/*\r
- * DOS/DJGPP device driver v1.3 for Mesa 5.0\r
- *\r
- * Copyright (C) 2002 - Borca Daniel\r
- * Email : dborca@yahoo.com\r
- * Web : http://www.geocities.com/dborca\r
- */\r
-\r
-\r
-#include <pc.h>\r
-#include <stdlib.h>\r
-\r
-#include "video.h"\r
-#include "vga.h"\r
-\r
-\r
-\r
-static vl_mode modes[] = {\r
- {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200},\r
- {0xffff, -1, -1, -1, -1, -1, -1}\r
-};\r
-\r
-static word16 vga_ver;\r
-static int linear_selector;\r
-static int oldmode = -1;\r
-\r
-#define vga_color_precision 6\r
-\r
-\r
-\r
-/* Desc: Attempts to detect VGA, check video modes and create selectors.\r
- *\r
- * In : -\r
- * Out : mode array\r
- *\r
- * Note: -\r
- */\r
-static vl_mode *vga_init (void)\r
-{\r
- int rv = 0;\r
-\r
- if (vga_ver) {\r
- return modes;\r
- }\r
-\r
- __asm("\n\\r
- movw $0x1a00, %%ax \n\\r
- int $0x10 \n\\r
- cmpb $0x1a, %%al \n\\r
- jne 0f \n\\r
- cmpb $0x07, %%bl \n\\r
- jb 0f \n\\r
- andl $0xff, %%ebx \n\\r
- movl %%ebx, %0 \n\\r
- 0:":"=g"(rv)::"%eax", "%ebx");\r
- if (rv == 0) {\r
- return NULL;\r
- }\r
-\r
- if (_create_selector(&linear_selector, 0xa0000, 0x10000)) {\r
- return NULL;\r
- }\r
-\r
- modes[0].sel = linear_selector;\r
-\r
- vga_ver = rv;\r
- return modes;\r
-}\r
-\r
-\r
-\r
-/* Desc: Frees all resources allocated by VGA init code.\r
- *\r
- * In : -\r
- * Out : -\r
- *\r
- * Note: -\r
- */\r
-static void vga_fini (void)\r
-{\r
- if (vga_ver) {\r
- _remove_selector(&linear_selector);\r
- }\r
-}\r
-\r
-\r
-\r
-/* Desc: Attempts to enter specified video mode.\r
- *\r
- * In : ptr to mode structure, refresh rate\r
- * Out : 0 if success\r
- *\r
- * Note: -\r
- */\r
-static int vga_entermode (vl_mode *p, int refresh)\r
-{\r
- if (!(p->mode & 0x4000)) {\r
- return -1;\r
- }\r
- VGA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;\r
-\r
- if (oldmode == -1) {\r
- __asm("\n\\r
- movb $0x0f, %%ah \n\\r
- int $0x10 \n\\r
- andl $0xff, %%eax \n\\r
- movl %%eax, %0 \n\\r
- ":"=g"(oldmode)::"%eax", "%ebx");\r
- }\r
-\r
- __asm("int $0x10"::"a"(p->mode&0xff));\r
-\r
- return 0;\r
-\r
- (void)refresh; /* silence compiler warning */\r
-}\r
-\r
-\r
-\r
-/* Desc: Restores to the mode prior to first call to vga_entermode.\r
- *\r
- * In : -\r
- * Out : -\r
- *\r
- * Note: -\r
- */\r
-static void vga_restore (void)\r
-{\r
- if (oldmode != -1) {\r
- __asm("int $0x10"::"a"(oldmode));\r
- }\r
-}\r
-\r
-\r
-\r
-/* Desc: set one palette entry\r
- *\r
- * In : color index, R, G, B\r
- * Out : -\r
- *\r
- * Note: uses integer values\r
- */\r
-static void vga_setCI_i (int index, int red, int green, int blue)\r
-{\r
-#if 0\r
- __asm("\n\\r
- movw $0x1010, %%ax \n\\r
- movb %1, %%dh \n\\r
- movb %2, %%ch \n\\r
- int $0x10 \n\\r
- "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");\r
-#else\r
- outportb(0x03C8, index);\r
- outportb(0x03C9, red);\r
- outportb(0x03C9, green);\r
- outportb(0x03C9, blue);\r
-#endif\r
-}\r
-\r
-\r
-\r
-/* Desc: set one palette entry\r
- *\r
- * In : color index, R, G, B\r
- * Out : -\r
- *\r
- * Note: uses normalized values\r
- */\r
-static void vga_setCI_f (int index, float red, float green, float blue)\r
-{\r
- float max = (1 << vga_color_precision) - 1;\r
-\r
- vga_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));\r
-}\r
-\r
-\r
-\r
-/* Desc: state retrieval\r
- *\r
- * In : parameter name, ptr to storage\r
- * Out : 0 if request successfully processed\r
- *\r
- * Note: -\r
- */\r
-static int vga_get (int pname, int *params)\r
-{\r
- switch (pname) {\r
- case VL_GET_CI_PREC:\r
- params[0] = vga_color_precision;\r
- break;\r
- default:\r
- return -1;\r
- }\r
- return 0;\r
-}\r
-\r
-\r
-\r
-/*\r
- * the driver\r
- */\r
-vl_driver VGA = {\r
- vga_init,\r
- vga_entermode,\r
- NULL,\r
- vga_setCI_f,\r
- vga_setCI_i,\r
- vga_get,\r
- vga_restore,\r
- vga_fini\r
-};\r
+/*
+ * 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 v1.7 for Mesa
+ *
+ * Copyright (C) 2002 - Borca Daniel
+ * Email : dborca@users.sourceforge.net
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#include <pc.h>
+#include <stdlib.h>
+
+#include "video.h"
+#include "vga.h"
+
+
+static vl_mode modes[] = {
+ {
+ /* .xres = */ 320,
+ /* .yres = */ 200,
+ /* .bpp = */ 8,
+ /* .mode = */ 0x13 | 0x4000,
+ /* .scanlen = */ 320,
+ /* .sel = */ -1,
+ /* .gran = */ 320*200
+ },
+ {
+ /* .xres = */ -1,
+ /* .yres = */ -1,
+ /* .bpp = */ -1,
+ /* .mode = */ 0xffff,
+ /* .scanlen = */ -1,
+ /* .sel = */ -1,
+ /* .gran = */ -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_fini (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 = _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;
+
+ (void)refresh; /* silence compiler warning */
+}
+
+
+/* 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));
+ oldmode = -1;
+ }
+}
+
+
+/* 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)
+{
+#if 0
+ __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");
+#else
+ outportb(0x03C8, index);
+ outportb(0x03C9, red);
+ outportb(0x03C9, green);
+ outportb(0x03C9, blue);
+#endif
+}
+
+
+/* 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;
+
+ vga_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));
+}
+
+
+/* Desc: state retrieval
+ *
+ * In : parameter name, ptr to storage
+ * Out : 0 if request successfully processed
+ *
+ * Note: -
+ */
+static int
+vga_get (int pname, int *params)
+{
+ switch (pname) {
+ case VL_GET_CI_PREC:
+ params[0] = vga_color_precision;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+
+/*
+ * the driver
+ */
+vl_driver VGA = {
+ vga_init,
+ vga_entermode,
+ NULL,
+ vga_setCI_f,
+ vga_setCI_i,
+ vga_get,
+ vga_restore,
+ vga_fini
+};
projects / mesa.git / blobdiff