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Diffstat (limited to 'src/glut/fbdev/fbdev.c')
-rw-r--r--src/glut/fbdev/fbdev.c698
1 files changed, 698 insertions, 0 deletions
diff --git a/src/glut/fbdev/fbdev.c b/src/glut/fbdev/fbdev.c
new file mode 100644
index 0000000000..fcbd4f8da2
--- /dev/null
+++ b/src/glut/fbdev/fbdev.c
@@ -0,0 +1,698 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ * Copyright (C) 1995-2006 Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Library for glut using mesa fbdev driver
+ *
+ * Written by Sean D'Epagnier (c) 2006
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <inttypes.h>
+
+#include <sys/mman.h>
+#include <sys/time.h>
+#include <sys/kd.h>
+
+#include <linux/fb.h>
+#include <linux/vt.h>
+
+#include <GL/gl.h>
+#include <GL/glfbdev.h>
+#include <GL/glut.h>
+
+#include "internal.h"
+
+#define FBMODES "/etc/fb.modes"
+
+
+struct fb_fix_screeninfo FixedInfo;
+struct fb_var_screeninfo VarInfo, OrigVarInfo;
+
+static int DesiredDepth = 0;
+
+int FrameBufferFD = -1;
+unsigned char *FrameBuffer;
+unsigned char *BackBuffer = NULL;
+int DisplayMode;
+
+struct GlutTimer *GlutTimers = NULL;
+
+struct timeval StartTime;
+
+/* per window data */
+static GLFBDevContextPtr Context;
+static GLFBDevBufferPtr Buffer;
+static GLFBDevVisualPtr Visual;
+
+int Redisplay;
+int Visible;
+int VisibleSwitch;
+int Active;
+/* we have to poll to see if we are visible
+ on a framebuffer that is not active */
+int VisiblePoll;
+static int FramebufferIndex;
+
+static int RequiredWidth;
+static int RequiredHeight;
+static int InitialWidthHint;
+static int InitialHeightHint;
+
+static int Initialized;
+
+char exiterror[256];
+
+/* test if the active console is attached to the same framebuffer */
+void TestVisible(void) {
+ struct fb_con2fbmap confb;
+ struct vt_stat st;
+ int ret;
+ ioctl(ConsoleFD, VT_GETSTATE, &st);
+ confb.console = st.v_active;
+
+ ret = ioctl(FrameBufferFD, FBIOGET_CON2FBMAP, &confb);
+
+ if(ret == -1 || confb.framebuffer == FramebufferIndex) {
+ VisibleSwitch = 1;
+ Visible = 0;
+ VisiblePoll = 0;
+ }
+}
+
+static void Cleanup(void)
+{
+ if(ConsoleFD != -1)
+ RestoreVT();
+
+ /* close mouse */
+ CloseMouse();
+
+ glFBDevMakeCurrent( NULL, NULL, NULL);
+
+ glFBDevDestroyContext(Context);
+ glFBDevDestroyBuffer(Buffer);
+ glFBDevDestroyVisual(Visual);
+
+ /* restore original variable screen info */
+ if(FrameBufferFD != -1) {
+ if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &OrigVarInfo))
+ fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+
+ munmap(FrameBuffer, FixedInfo.smem_len);
+ close(FrameBufferFD);
+ }
+
+ /* free allocated back buffer */
+ if(DisplayMode & GLUT_DOUBLE)
+ free(BackBuffer);
+
+ /* free menu items */
+ FreeMenus();
+
+ if(exiterror[0])
+ fprintf(stderr, "[glfbdev glut] %s", exiterror);
+}
+
+static void CrashHandler(int sig)
+{
+ sprintf(exiterror, "Caught signal %d, cleaning up\n", sig);
+ exit(0);
+}
+
+static void removeArgs(int *argcp, char **argv, int num)
+{
+ int i;
+ for (i = 0; argv[i+num]; i++)
+ argv[i] = argv[i+num];
+
+ argv[i] = NULL;
+ *argcp -= num;
+}
+
+#define REQPARAM(PARAM) \
+ if (i >= *argcp - 1) { \
+ fprintf(stderr, PARAM" requires a parameter\n"); \
+ exit(0); \
+ }
+
+void glutInit (int *argcp, char **argv)
+{
+ int i;
+ int nomouse = 0;
+ int nokeyboard = 0;
+ int usestdin = 0;
+
+ /* parse out args */
+ for (i = 1; i < *argcp;) {
+ if (!strcmp(argv[i], "-geometry")) {
+ REQPARAM("geometry");
+ if(sscanf(argv[i+1], "%dx%d", &RequiredWidth,
+ &RequiredHeight) != 2) {
+ fprintf(stderr,"Please specify geometry as widthxheight\n");
+ exit(0);
+ }
+ removeArgs(argcp, &argv[i], 2);
+ } else
+ if (!strcmp(argv[i], "-bpp")) {
+ REQPARAM("bpp");
+ if(sscanf(argv[i+1], "%d", &DesiredDepth) != 1) {
+ fprintf(stderr, "Please specify a parameter for bpp\n");
+ exit(0);
+ }
+ removeArgs(argcp, &argv[i], 2);
+ } else
+ if (!strcmp(argv[i], "-vt")) {
+ REQPARAM("vt");
+ if(sscanf(argv[i+1], "%d", &CurrentVT) != 1) {
+ fprintf(stderr, "Please specify a parameter for vt\n");
+ exit(0);
+ }
+ removeArgs(argcp, &argv[i], 2);
+ } else
+ if (!strcmp(argv[i], "-mousespeed")) {
+ REQPARAM("mousespeed");
+ if(sscanf(argv[i+1], "%lf", &MouseSpeed) != 1) {
+ fprintf(stderr, "Please specify a mouse speed, eg: 2.5\n");
+ exit(0);
+ }
+ removeArgs(argcp, &argv[i], 2);
+ } else
+ if (!strcmp(argv[i], "-nomouse")) {
+ nomouse = 1;
+ removeArgs(argcp, &argv[i], 1);
+ } else
+ if (!strcmp(argv[i], "-nokeyboard")) {
+ nokeyboard = 1;
+ removeArgs(argcp, &argv[i], 1);
+ } else
+ if (!strcmp(argv[i], "-stdin")) {
+ usestdin = 1;
+ removeArgs(argcp, &argv[i], 1);
+ } else
+ if (!strcmp(argv[i], "-gpmmouse")) {
+#ifdef HAVE_GPM
+ GpmMouse = 1;
+#else
+ fprintf(stderr, "gpm support not compiled\n");
+ exit(0);
+#endif
+ removeArgs(argcp, &argv[i], 1);
+ } else
+ if (!strcmp(argv[i], "--")) {
+ removeArgs(argcp, &argv[i], 1);
+ break;
+ } else
+ i++;
+ }
+
+ gettimeofday(&StartTime, 0);
+ atexit(Cleanup);
+
+ signal(SIGSEGV, CrashHandler);
+ signal(SIGINT, CrashHandler);
+ signal(SIGTERM, CrashHandler);
+
+ if(nomouse == 0)
+ InitializeMouse();
+ if(nokeyboard == 0)
+ InitializeVT(usestdin);
+
+ Initialized = 1;
+}
+
+void glutInitDisplayMode (unsigned int mode)
+{
+ DisplayMode = mode;
+}
+
+void glutInitWindowPosition (int x, int y)
+{
+}
+
+void glutInitWindowSize (int width, int height)
+{
+ InitialWidthHint = width;
+ InitialHeightHint = height;
+}
+
+
+static void ProcessTimers(void)
+{
+ if(GlutTimers && GlutTimers->time < glutGet(GLUT_ELAPSED_TIME)) {
+ struct GlutTimer *timer = GlutTimers;
+ timer->func(timer->value);
+ GlutTimers = timer->next;
+ free(timer);
+ }
+}
+
+void glutMainLoop(void)
+{
+ if(ReshapeFunc)
+ ReshapeFunc(VarInfo.xres, VarInfo.yres);
+
+ if(!DisplayFunc) {
+ sprintf(exiterror, "Fatal Error: No Display Function registered\n");
+ exit(0);
+ }
+
+ for(;;) {
+ ProcessTimers();
+
+ if(Active)
+ ReceiveInput();
+ else
+ if(VisiblePoll)
+ TestVisible();
+
+ if(IdleFunc)
+ IdleFunc();
+
+ if(VisibleSwitch) {
+ VisibleSwitch = 0;
+ if(VisibilityFunc)
+ VisibilityFunc(Visible ? GLUT_VISIBLE : GLUT_NOT_VISIBLE);
+ }
+
+ if(Visible && Redisplay) {
+ Redisplay = 0;
+ if(MouseEnabled)
+ EraseCursor();
+ DisplayFunc();
+ if(!(DisplayMode & GLUT_DOUBLE)) {
+ if(ActiveMenu)
+ DrawMenus();
+ if(MouseEnabled)
+ DrawCursor();
+ }
+ }
+ }
+}
+
+static void ParseFBModes(void)
+{
+ char buf[1024];
+ struct fb_var_screeninfo vi = VarInfo;
+
+ FILE *fbmodes = fopen(FBMODES, "r");
+
+ if(!fbmodes) {
+ sprintf(exiterror, "Warning: could not open "
+ FBMODES" using current mode\n");
+ return;
+ }
+
+ if(InitialWidthHint == 0 && InitialHeightHint == 0
+ && RequiredWidth == 0)
+ return; /* use current mode */
+
+ while(fgets(buf, sizeof buf, fbmodes)) {
+ char *c;
+ int v;
+
+ if(!(c = strstr(buf, "geometry")))
+ continue;
+ v = sscanf(c, "geometry %d %d %d %d %d", &vi.xres, &vi.yres,
+ &vi.xres_virtual, &vi.yres_virtual, &vi.bits_per_pixel);
+ if(v != 5)
+ continue;
+
+ /* now we have to decide what is best */
+ if(RequiredWidth) {
+ if(RequiredWidth != vi.xres || RequiredHeight != vi.yres)
+ continue;
+ } else {
+ if(VarInfo.xres < vi.xres && VarInfo.xres < InitialWidthHint)
+ v++;
+ if(VarInfo.xres > vi.xres && vi.xres > InitialWidthHint)
+ v++;
+
+ if(VarInfo.yres < vi.yres && VarInfo.yres < InitialHeightHint)
+ v++;
+ if(VarInfo.yres > vi.yres && vi.yres > InitialHeightHint)
+ v++;
+
+ if(v < 7)
+ continue;
+ }
+
+ fgets(buf, sizeof buf, fbmodes);
+ if(!(c = strstr(buf, "timings")))
+ continue;
+
+ v = sscanf(c, "timings %d %d %d %d %d %d %d", &vi.pixclock,
+ &vi.left_margin, &vi.right_margin, &vi.upper_margin,
+ &vi.lower_margin, &vi.hsync_len, &vi.vsync_len);
+ if(v != 7)
+ continue;
+
+ VarInfo = vi; /* finally found a better mode */
+ if(RequiredWidth) {
+ fclose(fbmodes);
+ return;
+ }
+ }
+
+ fclose(fbmodes);
+
+ if(RequiredWidth) {
+ sprintf(exiterror, "No mode (%dx%d) found in "FBMODES"\n",
+ RequiredWidth, RequiredHeight);
+ exit(0);
+ }
+}
+
+/* ---------- Window Management ----------*/
+int glutCreateWindow (const char *title)
+{
+ char *fbdev;
+ int attribs[9], i, mask, size;
+
+ if(Initialized == 0) {
+ int argc = 0;
+ char *argv[] = {NULL};
+ glutInit(&argc, argv);
+ }
+
+ if(Context)
+ return 0;
+
+ fbdev = getenv("FRAMEBUFFER");
+ if(fbdev) {
+#ifdef MULTIHEAD
+ if(!sscanf(fbdev, "/dev/fb%d", &FramebufferIndex))
+ if(!sscanf(fbdev, "/dev/fb/%d", &FramebufferIndex))
+ sprintf(exiterror, "Could not determine Framebuffer index!\n");
+#endif
+ } else {
+ static char fb[128];
+ struct fb_con2fbmap confb;
+ int fd = open("/dev/fb0", O_RDWR);
+
+ FramebufferIndex = 0;
+
+ confb.console = CurrentVT;
+ if(ioctl(fd, FBIOGET_CON2FBMAP, &confb) != -1)
+ FramebufferIndex = confb.framebuffer;
+ sprintf(fb, "/dev/fb%d", FramebufferIndex);
+ fbdev = fb;
+ close(fd);
+ }
+
+ /* open the framebuffer device */
+ FrameBufferFD = open(fbdev, O_RDWR);
+ if (FrameBufferFD < 0) {
+ sprintf(exiterror, "Error opening %s: %s\n", fbdev, strerror(errno));
+ exit(0);
+ }
+
+ /* Get the fixed screen info */
+ if (ioctl(FrameBufferFD, FBIOGET_FSCREENINFO, &FixedInfo)) {
+ sprintf(exiterror, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ /* get the variable screen info */
+ if (ioctl(FrameBufferFD, FBIOGET_VSCREENINFO, &OrigVarInfo)) {
+ sprintf(exiterror, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ /* operate on a copy */
+ VarInfo = OrigVarInfo;
+
+ /* set the depth, resolution, etc */
+ ParseFBModes();
+
+ if(DisplayMode & GLUT_INDEX)
+ VarInfo.bits_per_pixel = 8;
+ else
+ if(VarInfo.bits_per_pixel == 8)
+ VarInfo.bits_per_pixel = 32;
+
+ if (DesiredDepth)
+ VarInfo.bits_per_pixel = DesiredDepth;
+
+ VarInfo.xoffset = 0;
+ VarInfo.yoffset = 0;
+ VarInfo.nonstd = 0;
+ VarInfo.vmode &= ~FB_VMODE_YWRAP; /* turn off scrolling */
+
+ /* set new variable screen info */
+ if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &VarInfo)) {
+ sprintf(exiterror, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ /* reload the screen info to update offsets */
+ if (ioctl(FrameBufferFD, FBIOGET_VSCREENINFO, &VarInfo)) {
+ sprintf(exiterror, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ /* reload the fixed info to update color mode */
+ if (ioctl(FrameBufferFD, FBIOGET_FSCREENINFO, &FixedInfo)) {
+ sprintf(exiterror, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ if (DesiredDepth && DesiredDepth != VarInfo.bits_per_pixel) {
+ sprintf(exiterror, "error: Could not set set %d bpp\n", DesiredDepth);
+ exit(0);
+ }
+
+ if(DisplayMode & GLUT_INDEX && FixedInfo.visual == FB_VISUAL_DIRECTCOLOR) {
+ sprintf(exiterror, "error: Could not set 8 bit color mode\n");
+ exit(0);
+ }
+
+ /* initialize colormap */
+ LoadColorMap();
+
+ /* mmap the framebuffer into our address space */
+ FrameBuffer = mmap(0, FixedInfo.smem_len, PROT_READ | PROT_WRITE,
+ MAP_SHARED, FrameBufferFD, 0);
+ if (FrameBuffer == MAP_FAILED) {
+ sprintf(exiterror, "error: unable to mmap framebuffer: %s\n",
+ strerror(errno));
+ exit(0);
+ }
+
+ mask = DisplayMode;
+ for(i=0; i<8 && mask; i++) {
+ if(mask & GLUT_DOUBLE) {
+ attribs[i] = GLFBDEV_DOUBLE_BUFFER;
+ mask &= ~GLUT_DOUBLE;
+ continue;
+ }
+
+ if(mask & GLUT_INDEX) {
+ attribs[i] = GLFBDEV_COLOR_INDEX;
+ mask &= ~GLUT_INDEX;
+ continue;
+ }
+
+ if(mask & GLUT_DEPTH) {
+ attribs[i] = GLFBDEV_DEPTH_SIZE;
+ attribs[++i] = DepthSize;
+ mask &= ~GLUT_DEPTH;
+ continue;
+ }
+
+ if(mask & GLUT_STENCIL) {
+ attribs[i] = GLFBDEV_STENCIL_SIZE;
+ attribs[++i] = StencilSize;
+ mask &= ~GLUT_STENCIL;
+ continue;
+ }
+
+ if(mask & GLUT_ACCUM) {
+ attribs[i] = GLFBDEV_ACCUM_SIZE;
+ attribs[++i] = AccumSize;
+ mask &= ~GLUT_ACCUM;
+ continue;
+ }
+
+ if(mask & GLUT_ALPHA)
+ if(!(DisplayMode & GLUT_INDEX)) {
+ mask &= ~GLUT_ALPHA;
+ i--;
+ continue;
+ }
+
+ sprintf(exiterror, "Invalid mode from glutInitDisplayMode\n");
+ exit(0);
+ }
+
+ attribs[i] = GLFBDEV_NONE;
+
+ if(!(Visual = glFBDevCreateVisual( &FixedInfo, &VarInfo, attribs ))) {
+ sprintf(exiterror, "Failure to create Visual\n");
+ exit(0);
+ }
+
+ size = VarInfo.xres_virtual * VarInfo.yres_virtual
+ * VarInfo.bits_per_pixel / 8;
+ if(DisplayMode & GLUT_DOUBLE) {
+ if(!(BackBuffer = malloc(size))) {
+ sprintf(exiterror, "Failed to allocate double buffer\n");
+ exit(0);
+ }
+ } else
+ BackBuffer = FrameBuffer;
+
+ if(!(Buffer = glFBDevCreateBuffer( &FixedInfo, &VarInfo, Visual,
+ FrameBuffer, BackBuffer, size))) {
+ sprintf(exiterror, "Failure to create Buffer\n");
+ exit(0);
+ }
+
+ if(!(Context = glFBDevCreateContext(Visual, NULL))) {
+ sprintf(exiterror, "Failure to create Context\n");
+ exit(0);
+ }
+
+ if(!glFBDevMakeCurrent( Context, Buffer, Buffer )) {
+ sprintf(exiterror, "Failure to Make Current\n");
+ exit(0);
+ }
+
+ InitializeCursor();
+ InitializeMenus();
+
+ Visible = 1;
+ VisibleSwitch = 1;
+ Redisplay = 1;
+ return 1;
+}
+
+int glutCreateSubWindow(int win, int x, int y, int width, int height)
+{
+ return 0;
+}
+
+void glutSetWindow(int win)
+{
+}
+
+int glutGetWindow(void)
+{
+ return 1;
+}
+
+void glutDestroyWindow(int win)
+{
+}
+
+void glutPostRedisplay(void)
+{
+ Redisplay = 1;
+}
+
+void glutPostWindowRedisplay(int win)
+{
+ Redisplay = 1;
+}
+
+void glutSwapBuffers(void)
+{
+ glFlush();
+
+ if(Visible && DisplayMode & GLUT_DOUBLE) {
+ if(ActiveMenu)
+ DrawMenus();
+ if(MouseEnabled)
+ DrawCursor();
+ glFBDevSwapBuffers(Buffer);
+ }
+}
+
+void glutPositionWindow(int x, int y)
+{
+}
+
+void glutReshapeWindow(int width, int height)
+{
+}
+
+void glutFullScreen(void)
+{
+}
+
+void glutPopWindow(void)
+{
+}
+
+void glutPushWindow(void)
+{
+}
+
+void glutShowWindow(void)
+{
+}
+
+void glutHideWindow(void)
+{
+}
+
+static void UnIconifyWindow(int sig)
+{
+ if(ConsoleFD == 0)
+ InitializeVT(1);
+ else
+ if(ConsoleFD > 0)
+ InitializeVT(0);
+ if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &VarInfo)) {
+ sprintf(exiterror, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+ exit(0);
+ }
+}
+
+void glutIconifyWindow(void)
+{
+ RestoreVT();
+ signal(SIGCONT, UnIconifyWindow);
+ if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &OrigVarInfo))
+ fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+ raise(SIGSTOP);
+}
+
+void glutSetWindowTitle(const char *name)
+{
+}
+
+void glutSetIconTitle(const char *name)
+{
+}
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