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-rw-r--r--progs/fbdev/glfbdevtest.c524
1 files changed, 524 insertions, 0 deletions
diff --git a/progs/fbdev/glfbdevtest.c b/progs/fbdev/glfbdevtest.c
new file mode 100644
index 0000000000..a461c55e2f
--- /dev/null
+++ b/progs/fbdev/glfbdevtest.c
@@ -0,0 +1,524 @@
+/*
+ * Test the GLFBDev interface. Only tested with radeonfb driver!!!!
+ *
+ * Written by Brian Paul
+ */
+
+
+#include <assert.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <linux/fb.h>
+#include <linux/kd.h>
+#include <linux/vt.h>
+#include <GL/gl.h>
+#include <GL/glfbdev.h>
+#include <math.h>
+
+#define DEFAULT_DEPTH 8
+
+static struct fb_fix_screeninfo FixedInfo;
+static struct fb_var_screeninfo VarInfo, OrigVarInfo;
+static int DesiredDepth = 0;
+static int OriginalVT = -1;
+static int ConsoleFD = -1;
+static int FrameBufferFD = -1;
+static caddr_t FrameBuffer = (caddr_t) -1;
+static caddr_t MMIOAddress = (caddr_t) -1;
+
+
+static void
+print_fixed_info(const struct fb_fix_screeninfo *fixed, const char *s)
+{
+ static const char *visuals[] = {
+ "MONO01", "MONO10", "TRUECOLOR", "PSEUDOCOLOR",
+ "DIRECTCOLOR", "STATIC_PSEUDOCOLOR"
+ };
+
+ printf("%s info -----------------------\n", s);
+ printf("id = %16s\n", fixed->id);
+ printf("smem_start = 0x%lx\n", fixed->smem_start);
+ printf("smem_len = %d (0x%x)\n", fixed->smem_len, fixed->smem_len);
+ printf("type = 0x%x\n", fixed->type);
+ printf("type_aux = 0x%x\n", fixed->type_aux);
+ printf("visual = 0x%x (%s)\n", fixed->visual, visuals[fixed->visual]);
+ printf("xpanstep = %d\n", fixed->xpanstep);
+ printf("ypanstep = %d\n", fixed->ypanstep);
+ printf("ywrapstep = %d\n", fixed->ywrapstep);
+ printf("line_length = %d\n", fixed->line_length);
+ printf("mmio_start = 0x%lx\n", fixed->mmio_start);
+ printf("mmio_len = %d (0x%x)\n", fixed->mmio_len, fixed->mmio_len);
+ printf("accel = 0x%x\n", fixed->accel);
+}
+
+
+static void
+print_var_info(const struct fb_var_screeninfo *var, const char *s)
+{
+ printf("%s info -----------------------\n", s);
+ printf("xres = %d\n", var->xres);
+ printf("yres = %d\n", var->yres);
+ printf("xres_virtual = %d\n", var->xres_virtual);
+ printf("yres_virtual = %d\n", var->yres_virtual);
+ printf("xoffset = %d\n", var->xoffset);
+ printf("yoffset = %d\n", var->yoffset);
+ printf("bits_per_pixel = %d\n", var->bits_per_pixel);
+ printf("grayscale = %d\n", var->grayscale);
+
+ printf("red.offset = %d length = %d msb_right = %d\n",
+ var->red.offset, var->red.length, var->red.msb_right);
+ printf("green.offset = %d length = %d msb_right = %d\n",
+ var->green.offset, var->green.length, var->green.msb_right);
+ printf("blue.offset = %d length = %d msb_right = %d\n",
+ var->blue.offset, var->blue.length, var->blue.msb_right);
+ printf("transp.offset = %d length = %d msb_right = %d\n",
+ var->transp.offset, var->transp.length, var->transp.msb_right);
+
+ printf("nonstd = %d\n", var->nonstd);
+ printf("activate = %d\n", var->activate);
+ printf("height = %d mm\n", var->height);
+ printf("width = %d mm\n", var->width);
+ printf("accel_flags = 0x%x\n", var->accel_flags);
+ printf("pixclock = %d\n", var->pixclock);
+ printf("left_margin = %d\n", var->left_margin);
+ printf("right_margin = %d\n", var->right_margin);
+ printf("upper_margin = %d\n", var->upper_margin);
+ printf("lower_margin = %d\n", var->lower_margin);
+ printf("hsync_len = %d\n", var->hsync_len);
+ printf("vsync_len = %d\n", var->vsync_len);
+ printf("sync = %d\n", var->sync);
+ printf("vmode = %d\n", var->vmode);
+}
+
+
+static void
+signal_handler(int signumber)
+{
+ signal(signumber, SIG_IGN); /* prevent recursion! */
+ fprintf(stderr, "error: got signal %d (exiting)\n", signumber);
+ exit(1);
+}
+
+
+static void
+initialize_fbdev( void )
+{
+ char ttystr[1000];
+ int fd, vtnumber, ttyfd;
+ int sz;
+
+ (void) sz;
+
+ if (geteuid()) {
+ fprintf(stderr, "error: you need to be root\n");
+ exit(1);
+ }
+
+#if 1
+ /* open the framebuffer device */
+ FrameBufferFD = open("/dev/fb0", O_RDWR);
+ if (FrameBufferFD < 0) {
+ fprintf(stderr, "Error opening /dev/fb0: %s\n", strerror(errno));
+ exit(1);
+ }
+#endif
+
+ /* open /dev/tty0 and get the vt number */
+ if ((fd = open("/dev/tty0", O_WRONLY, 0)) < 0) {
+ fprintf(stderr, "error opening /dev/tty0\n");
+ exit(1);
+ }
+ if (ioctl(fd, VT_OPENQRY, &vtnumber) < 0 || vtnumber < 0) {
+ fprintf(stderr, "error: couldn't get a free vt\n");
+ exit(1);
+ }
+ close(fd);
+
+ /* open the console tty */
+ sprintf(ttystr, "/dev/tty%d", vtnumber); /* /dev/tty1-64 */
+ ConsoleFD = open(ttystr, O_RDWR | O_NDELAY, 0);
+ if (ConsoleFD < 0) {
+ fprintf(stderr, "error couldn't open console fd\n");
+ exit(1);
+ }
+
+ /* save current vt number */
+ {
+ struct vt_stat vts;
+ if (ioctl(ConsoleFD, VT_GETSTATE, &vts) == 0)
+ OriginalVT = vts.v_active;
+ }
+
+ /* disconnect from controlling tty */
+ ttyfd = open("/dev/tty", O_RDWR);
+ if (ttyfd >= 0) {
+ ioctl(ttyfd, TIOCNOTTY, 0);
+ close(ttyfd);
+ }
+
+ /* some magic to restore the vt when we exit */
+ {
+ struct vt_mode vt;
+ if (ioctl(ConsoleFD, VT_ACTIVATE, vtnumber) != 0)
+ printf("ioctl VT_ACTIVATE: %s\n", strerror(errno));
+ if (ioctl(ConsoleFD, VT_WAITACTIVE, vtnumber) != 0)
+ printf("ioctl VT_WAITACTIVE: %s\n", strerror(errno));
+
+ if (ioctl(ConsoleFD, VT_GETMODE, &vt) < 0) {
+ fprintf(stderr, "error: ioctl VT_GETMODE: %s\n", strerror(errno));
+ exit(1);
+ }
+
+ vt.mode = VT_PROCESS;
+ vt.relsig = SIGUSR1;
+ vt.acqsig = SIGUSR1;
+ if (ioctl(ConsoleFD, VT_SETMODE, &vt) < 0) {
+ fprintf(stderr, "error: ioctl(VT_SETMODE) failed: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ }
+
+ /* go into graphics mode */
+ if (ioctl(ConsoleFD, KDSETMODE, KD_GRAPHICS) < 0) {
+ fprintf(stderr, "error: ioctl(KDSETMODE, KD_GRAPHICS) failed: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+
+#if 0
+ /* open the framebuffer device */
+ FrameBufferFD = open("/dev/fb0", O_RDWR);
+ if (FrameBufferFD < 0) {
+ fprintf(stderr, "Error opening /dev/fb0: %s\n", strerror(errno));
+ exit(1);
+ }
+#endif
+
+ /* Get the fixed screen info */
+ if (ioctl(FrameBufferFD, FBIOGET_FSCREENINFO, &FixedInfo)) {
+ fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ print_fixed_info(&FixedInfo, "Fixed");
+
+
+ /* get the variable screen info */
+ if (ioctl(FrameBufferFD, FBIOGET_VSCREENINFO, &OrigVarInfo)) {
+ fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ print_var_info(&OrigVarInfo, "Orig Var");
+
+ /* operate on a copy */
+ VarInfo = OrigVarInfo;
+
+ /* set the depth, resolution, etc */
+ DesiredDepth = 32;
+ if (DesiredDepth)
+ VarInfo.bits_per_pixel = DesiredDepth;
+
+ if (VarInfo.bits_per_pixel == 16) {
+ VarInfo.red.offset = 11;
+ VarInfo.green.offset = 5;
+ VarInfo.blue.offset = 0;
+ VarInfo.red.length = 5;
+ VarInfo.green.length = 6;
+ VarInfo.blue.length = 5;
+ VarInfo.transp.offset = 0;
+ VarInfo.transp.length = 0;
+ }
+ else if (VarInfo.bits_per_pixel == 32) {
+ VarInfo.red.offset = 16;
+ VarInfo.green.offset = 8;
+ VarInfo.blue.offset = 0;
+ VarInfo.transp.offset = 24;
+ VarInfo.red.length = 8;
+ VarInfo.green.length = 8;
+ VarInfo.blue.length = 8;
+ VarInfo.transp.length = 8;
+ }
+ /* timing values taken from /etc/fb.modes (1280x1024 @ 75Hz) */
+ VarInfo.xres_virtual = VarInfo.xres = 1280;
+ VarInfo.yres_virtual = VarInfo.yres = 1024;
+ VarInfo.pixclock = 7408;
+ VarInfo.left_margin = 248;
+ VarInfo.right_margin = 16;
+ VarInfo.upper_margin = 38;
+ VarInfo.lower_margin = 1;
+ VarInfo.hsync_len = 144;
+ VarInfo.vsync_len = 3;
+
+ 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)) {
+ fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ print_var_info(&VarInfo, "New Var");
+
+ if (FixedInfo.visual != FB_VISUAL_TRUECOLOR &&
+ FixedInfo.visual != FB_VISUAL_DIRECTCOLOR) {
+ fprintf(stderr, "non-TRUE/DIRECT-COLOR visuals (0x%x) not supported by this demo.\n", FixedInfo.visual);
+ exit(1);
+ }
+
+ /* initialize colormap */
+ if (FixedInfo.visual == FB_VISUAL_DIRECTCOLOR) {
+ struct fb_cmap cmap;
+ unsigned short red[256], green[256], blue[256];
+ int i;
+
+ /* we're assuming 256 entries here */
+ printf("initializing directcolor colormap\n");
+ cmap.start = 0;
+ cmap.len = 256;
+ cmap.red = red;
+ cmap.green = green;
+ cmap.blue = blue;
+ cmap.transp = NULL;
+ for (i = 0; i < cmap.len; i++) {
+ red[i] = green[i] = blue[i] = (i << 8) | i;
+ }
+ if (ioctl(FrameBufferFD, FBIOPUTCMAP, (void *) &cmap) < 0) {
+ fprintf(stderr, "ioctl(FBIOPUTCMAP) failed [%d]\n", i);
+ }
+ }
+
+ /*
+ * fbdev says the frame buffer is at offset zero, and the mmio region
+ * is immediately after.
+ */
+
+ /* mmap the framebuffer into our address space */
+ FrameBuffer = (caddr_t) mmap(0, /* start */
+ FixedInfo.smem_len, /* bytes */
+ PROT_READ | PROT_WRITE, /* prot */
+ MAP_SHARED, /* flags */
+ FrameBufferFD, /* fd */
+ 0 /* offset */);
+ if (FrameBuffer == (caddr_t) - 1) {
+ fprintf(stderr, "error: unable to mmap framebuffer: %s\n",
+ strerror(errno));
+ exit(1);
+ }
+ printf("FrameBuffer = %p\n", FrameBuffer);
+
+#if 1
+ /* mmap the MMIO region into our address space */
+ MMIOAddress = (caddr_t) mmap(0, /* start */
+ FixedInfo.mmio_len, /* bytes */
+ PROT_READ | PROT_WRITE, /* prot */
+ MAP_SHARED, /* flags */
+ FrameBufferFD, /* fd */
+ FixedInfo.smem_len /* offset */);
+ if (MMIOAddress == (caddr_t) - 1) {
+ fprintf(stderr, "error: unable to mmap mmio region: %s\n",
+ strerror(errno));
+ }
+ printf("MMIOAddress = %p\n", MMIOAddress);
+
+ /* try out some simple MMIO register reads */
+ if (1)
+ {
+ typedef unsigned int CARD32;
+ typedef unsigned char CARD8;
+#define RADEON_CONFIG_MEMSIZE 0x00f8
+#define RADEON_MEM_SDRAM_MODE_REG 0x0158
+#define MMIO_IN32(base, offset) \
+ *(volatile CARD32 *)(void *)(((CARD8*)(base)) + (offset))
+#define INREG(addr) MMIO_IN32(MMIOAddress, addr)
+ int sz, type;
+ const char *typeStr[] = {"SDR", "DDR", "64-bit SDR"};
+ sz = INREG(RADEON_CONFIG_MEMSIZE);
+ type = INREG(RADEON_MEM_SDRAM_MODE_REG);
+ printf("RADEON_CONFIG_MEMSIZE = %d (%d MB)\n", sz, sz / 1024 / 1024);
+ printf("RADEON_MEM_SDRAM_MODE_REG >> 30 = %d (%s)\n",
+ type >> 30, typeStr[type>>30]);
+ }
+#endif
+
+}
+
+
+static void
+shutdown_fbdev( void )
+{
+ struct vt_mode VT;
+
+ printf("cleaning up...\n");
+ /* restore original variable screen info */
+ if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &OrigVarInfo)) {
+ fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n",
+ strerror(errno));
+ exit(1);
+ }
+
+ munmap(MMIOAddress, FixedInfo.mmio_len);
+ munmap(FrameBuffer, FixedInfo.smem_len);
+ close(FrameBufferFD);
+
+ /* restore text mode */
+ ioctl(ConsoleFD, KDSETMODE, KD_TEXT);
+
+ /* set vt */
+ if (ioctl(ConsoleFD, VT_GETMODE, &VT) != -1) {
+ VT.mode = VT_AUTO;
+ ioctl(ConsoleFD, VT_SETMODE, &VT);
+ }
+
+ /* restore original vt */
+ if (OriginalVT >= 0) {
+ ioctl(ConsoleFD, VT_ACTIVATE, OriginalVT);
+ OriginalVT = -1;
+ }
+
+ close(ConsoleFD);
+}
+
+
+/* Borrowed from GLUT */
+static void
+doughnut(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+ int i, j;
+ GLfloat theta, phi, theta1;
+ GLfloat cosTheta, sinTheta;
+ GLfloat cosTheta1, sinTheta1;
+ GLfloat ringDelta, sideDelta;
+
+ ringDelta = 2.0 * M_PI / rings;
+ sideDelta = 2.0 * M_PI / nsides;
+
+ theta = 0.0;
+ cosTheta = 1.0;
+ sinTheta = 0.0;
+ for (i = rings - 1; i >= 0; i--) {
+ theta1 = theta + ringDelta;
+ cosTheta1 = cos(theta1);
+ sinTheta1 = sin(theta1);
+ glBegin(GL_QUAD_STRIP);
+ phi = 0.0;
+ for (j = nsides; j >= 0; j--) {
+ GLfloat cosPhi, sinPhi, dist;
+
+ phi += sideDelta;
+ cosPhi = cos(phi);
+ sinPhi = sin(phi);
+ dist = R + r * cosPhi;
+
+ glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+ glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+ glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+ glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
+ }
+ glEnd();
+ theta = theta1;
+ cosTheta = cosTheta1;
+ sinTheta = sinTheta1;
+ }
+}
+
+
+static void
+gltest( void )
+{
+ static const int attribs[] = {
+ GLFBDEV_DOUBLE_BUFFER,
+ GLFBDEV_DEPTH_SIZE, 16,
+ GLFBDEV_NONE
+ };
+ GLFBDevContextPtr ctx;
+ GLFBDevBufferPtr buf;
+ GLFBDevVisualPtr vis;
+ int bytes, r, g, b, a;
+ float ang;
+
+ printf("GLFBDEV_VENDOR = %s\n", glFBDevGetString(GLFBDEV_VENDOR));
+ printf("GLFBDEV_VERSION = %s\n", glFBDevGetString(GLFBDEV_VERSION));
+
+ /* framebuffer size */
+ bytes = VarInfo.xres_virtual * VarInfo.yres_virtual * VarInfo.bits_per_pixel / 8;
+
+ vis = glFBDevCreateVisual( &FixedInfo, &VarInfo, attribs );
+ assert(vis);
+
+ buf = glFBDevCreateBuffer( &FixedInfo, &VarInfo, vis, FrameBuffer, NULL, bytes );
+ assert(buf);
+
+ ctx = glFBDevCreateContext( vis, NULL );
+ assert(buf);
+
+ b = glFBDevMakeCurrent( ctx, buf, buf );
+ assert(b);
+
+ /*printf("GL_EXTENSIONS: %s\n", glGetString(GL_EXTENSIONS));*/
+ glGetIntegerv(GL_RED_BITS, &r);
+ glGetIntegerv(GL_GREEN_BITS, &g);
+ glGetIntegerv(GL_BLUE_BITS, &b);
+ glGetIntegerv(GL_ALPHA_BITS, &a);
+ printf("RED_BITS=%d GREEN_BITS=%d BLUE_BITS=%d ALPHA_BITS=%d\n",
+ r, g, b, a);
+
+ glClearColor(0.5, 0.5, 1.0, 0);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum(-1, 1, -1, 1, 2, 30);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0, 0, -15);
+ glViewport(0, 0, VarInfo.xres_virtual, VarInfo.yres_virtual);
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+
+ for (ang = 0; ang <= 180; ang += 15) {
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glPushMatrix();
+ glRotatef(ang, 1, 0, 0);
+ doughnut(1, 3, 40, 20);
+ glPopMatrix();
+ glFBDevSwapBuffers(buf);
+ }
+
+ /* clean up */
+ b = glFBDevMakeCurrent( NULL, NULL, NULL);
+ assert(b);
+
+ glFBDevDestroyContext(ctx);
+ glFBDevDestroyBuffer(buf);
+ glFBDevDestroyVisual(vis);
+}
+
+
+int
+main( int argc, char *argv[] )
+{
+ signal(SIGUSR1, signal_handler); /* exit if someone tries a vt switch */
+ signal(SIGSEGV, signal_handler); /* catch segfaults */
+
+ initialize_fbdev();
+ gltest();
+ shutdown_fbdev();
+
+ return 0;
+}
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