diff options
| -rw-r--r-- | include/GL/glfbdev.h | 145 | ||||
| -rw-r--r-- | progs/fbdev/glfbdevtest.c | 524 | ||||
| -rw-r--r-- | src/mesa/drivers/fbdev/glfbdev.c | 828 |
3 files changed, 1497 insertions, 0 deletions
diff --git a/include/GL/glfbdev.h b/include/GL/glfbdev.h new file mode 100644 index 00000000000..cd6cdd5e51f --- /dev/null +++ b/include/GL/glfbdev.h @@ -0,0 +1,145 @@ +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2003 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. + */ + + +#ifndef GLFBDEV_H +#define GLFBDEV_H + + +/* avoid including linux/fb.h */ +struct fb_fix_screeninfo; +struct fb_var_screeninfo; + + +/* public types */ +typedef struct GLFBDevVisualRec *GLFBDevVisualPtr; +typedef struct GLFBDevBufferRec *GLFBDevBufferPtr; +typedef struct GLFBDevContextRec *GLFBDevContextPtr; + + +/* API version */ +#define GLFBDEV_VERSION_1_0 1 + + +/* For glFBDevCreateVisual */ +#define GLFBDEV_DOUBLE_BUFFER 100 +#define GLFBDEV_COLOR_INDEX 101 +#define GLFBDEV_DEPTH_SIZE 102 +#define GLFBDEV_STENCIL_SIZE 103 +#define GLFBDEV_ACCUM_SIZE 104 +#define GLFBDEV_LEVEL 105 +#define GLFBDEV_NONE 0 + +/* For glFBDevGetString */ +#define GLFBDEV_VERSION 200 +#define GLFBDEV_VENDOR 201 + + +/* Misc functions */ + +extern const char * +glFBDevGetString( int str ); + + +extern const void * +glFBDevGetProcAddress( const char *procName ); + + + +/** + * Create a GLFBDevVisual. + * \param fixInfo - needed to get the visual types, etc. + * \param varInfo - needed to get the bits_per_pixel, etc. + * \param attribs - for requesting depth, stencil, accum buffers, etc. + */ +extern GLFBDevVisualPtr +glFBDevCreateVisual( const struct fb_fix_screeninfo *fixInfo, + const struct fb_var_screeninfo *varInfo, + const int *attribs ); + +extern void +glFBDevDestroyVisual( GLFBDevVisualPtr visual ); + +extern int +glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual, int attrib); + + + +/** + * Create a GLFBDevBuffer. + * \param fixInfo, varInfo - needed in order to get the screen size + * (resolution), etc. + * \param visual - as returned by glFBDevCreateVisual() + * \param frontBuffer - address of front color buffer + * \param backBuffer - address of back color buffer (may be NULL) + * \param size - size of the color buffer(s) in bytes. + */ +extern GLFBDevBufferPtr +glFBDevCreateBuffer( const struct fb_fix_screeninfo *fixInfo, + const struct fb_var_screeninfo *varInfo, + const GLFBDevVisualPtr visual, + void *frontBuffer, void *backBuffer, size_t size ); + +extern void +glFBDevDestroyBuffer( GLFBDevBufferPtr buffer ); + +extern int +glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer, int attrib); + +extern GLFBDevBufferPtr +glFBDevGetCurrentDrawBuffer( void ); + +extern GLFBDevBufferPtr +glFBDevGetCurrentReadBuffer( void ); + +extern void +glFBDevSwapBuffers( GLFBDevBufferPtr buffer ); + + + +/** + * Create a GLFBDevContext. + * \param visual - as created by glFBDevCreateVisual. + * \param share - specifies another context with which to share textures, + * display lists, etc. (may be NULL). + */ +extern GLFBDevContextPtr +glFBDevCreateContext( const GLFBDevVisualPtr visual, GLFBDevContextPtr share ); + +extern void +glFBDevDestroyContext( GLFBDevContextPtr context ); + +extern int +glFBDevGetContextAttrib( const GLFBDevContextPtr context, int attrib); + +extern GLFBDevContextPtr +glFBDevGetCurrentContext( void ); + +extern int +glFBDevMakeCurrent( GLFBDevContextPtr context, + GLFBDevBufferPtr drawBuffer, + GLFBDevBufferPtr readBuffer ); + + +#endif /* GLFBDEV_H */ diff --git a/progs/fbdev/glfbdevtest.c b/progs/fbdev/glfbdevtest.c new file mode 100644 index 00000000000..a461c55e2f8 --- /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; +} diff --git a/src/mesa/drivers/fbdev/glfbdev.c b/src/mesa/drivers/fbdev/glfbdev.c new file mode 100644 index 00000000000..6d3ed01d7b4 --- /dev/null +++ b/src/mesa/drivers/fbdev/glfbdev.c @@ -0,0 +1,828 @@ +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2003 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. + */ + + +/* + * OpenGL (Mesa) interface for fbdev. + * For info about fbdev: + * http://www.tldp.org/HOWTO/Framebuffer-HOWTO.html + * + * known VGA modes + * Colours 640x400 640x480 800x600 1024x768 1152x864 1280x1024 1600x1200 + * --------+-------------------------------------------------------------- + * 4 bits | ? ? 0x302 ? ? ? ? + * 8 bits | 0x300 0x301 0x303 0x305 0x161 0x307 0x31C + * 15 bits | ? 0x310 0x313 0x316 0x162 0x319 0x31D + * 16 bits | ? 0x311 0x314 0x317 0x163 0x31A 0x31E + * 24 bits | ? 0x312 0x315 0x318 ? 0x31B 0x31F + * 32 bits | ? ? ? ? 0x164 ? + */ + + +#ifdef USE_GLFBDEV_DRIVER + +#include "glheader.h" +#include <linux/fb.h> +#include "GL/glfbdev.h" +#include "context.h" +#include "extensions.h" +#include "imports.h" +#include "texformat.h" +#include "teximage.h" +#include "texstore.h" +#include "array_cache/acache.h" +#include "swrast/swrast.h" +#include "swrast_setup/swrast_setup.h" +#include "tnl/tnl.h" +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" + + +#define PF_B8G8R8 1 +#define PF_B8G8R8A8 2 +#define PF_B5G6R5 3 +#define PF_B5G5R5 4 +#define PF_CI8 5 + + +/* + * Derived from Mesa's GLvisual class. + */ +struct GLFBDevVisualRec { + GLvisual glvisual; /* base class */ + struct fb_fix_screeninfo fix; + struct fb_var_screeninfo var; + int pixelFormat; +}; + +/* + * Derived from Mesa's GLframebuffer class. + */ +struct GLFBDevBufferRec { + GLframebuffer glframebuffer; /* base class */ + GLFBDevVisualPtr visual; + struct fb_fix_screeninfo fix; + struct fb_var_screeninfo var; + void *frontStart; + void *backStart; + size_t size; + GLuint bytesPerPixel; + GLuint rowStride; /* in bytes */ + GLubyte *frontBottom; /* pointer to last row */ + GLubyte *backBottom; /* pointer to last row */ + GLubyte *curBottom; /* = frontBottom or backBottom */ + GLboolean mallocBackBuffer; +}; + +/* + * Derived from Mesa's GLcontext class. + */ +struct GLFBDevContextRec { + GLcontext glcontext; /* base class */ + GLFBDevVisualPtr visual; + GLFBDevBufferPtr drawBuffer; + GLFBDevBufferPtr readBuffer; + GLFBDevBufferPtr curBuffer; +}; + + + +#define GLFBDEV_CONTEXT(CTX) ((GLFBDevContextPtr) (CTX)) +#define GLFBDEV_BUFFER(BUF) ((GLFBDevBufferPtr) (BUF)) + + +/**********************************************************************/ +/* Internal device driver functions */ +/**********************************************************************/ + + +static const GLubyte * +get_string(GLcontext *ctx, GLenum pname) +{ + (void) ctx; + switch (pname) { + case GL_RENDERER: + return (const GLubyte *) "Mesa glfbdev"; + default: + return NULL; + } +} + + +static void +update_state( GLcontext *ctx, GLuint new_state ) +{ + /* not much to do here - pass it on */ + _swrast_InvalidateState( ctx, new_state ); + _swsetup_InvalidateState( ctx, new_state ); + _ac_InvalidateState( ctx, new_state ); + _tnl_InvalidateState( ctx, new_state ); +} + + +static void +get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) +{ + const GLFBDevBufferPtr fbdevbuffer = (GLFBDevBufferPtr) buffer; + *width = fbdevbuffer->var.xres_virtual; + *height = fbdevbuffer->var.yres_virtual; +} + + +/* specifies the buffer for swrast span rendering/reading */ +static void +set_buffer( GLcontext *ctx, GLframebuffer *buffer, GLuint bufferBit ) +{ + GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); + GLFBDevBufferPtr fbdevbuf = GLFBDEV_BUFFER(buffer); + fbdevctx->curBuffer = fbdevbuf; + switch (bufferBit) { + case FRONT_LEFT_BIT: + fbdevbuf->curBottom = fbdevbuf->frontBottom; + break; + case BACK_LEFT_BIT: + fbdevbuf->curBottom = fbdevbuf->backBottom; + break; + default: + _mesa_problem(ctx, "bad bufferBit in set_buffer()"); + } +} + + +static void +init_core_functions( GLcontext *ctx ) +{ + ctx->Driver.GetString = get_string; + ctx->Driver.UpdateState = update_state; + ctx->Driver.ResizeBuffers = _swrast_alloc_buffers; + ctx->Driver.GetBufferSize = get_buffer_size; + + ctx->Driver.Accum = _swrast_Accum; + ctx->Driver.Bitmap = _swrast_Bitmap; + ctx->Driver.Clear = _swrast_Clear; /* would be good to optimize */ + ctx->Driver.CopyPixels = _swrast_CopyPixels; + ctx->Driver.DrawPixels = _swrast_DrawPixels; + ctx->Driver.ReadPixels = _swrast_ReadPixels; + ctx->Driver.DrawBuffer = _swrast_DrawBuffer; + + ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format; + ctx->Driver.TexImage1D = _mesa_store_teximage1d; + ctx->Driver.TexImage2D = _mesa_store_teximage2d; + ctx->Driver.TexImage3D = _mesa_store_teximage3d; + ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d; + ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d; + ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d; + ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage; + + ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d; + ctx->Driver.CompressedTexImage2D = _mesa_store_compressed_teximage2d; + ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d; + ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d; + ctx->Driver.CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d; + ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d; + + ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d; + ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d; + ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d; + ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d; + ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d; + ctx->Driver.CopyColorTable = _swrast_CopyColorTable; + ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable; + ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D; + ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D; +} + + +/* + * Generate code for span functions. + */ + +/* 24-bit BGR */ +#define NAME(PREFIX) PREFIX##_B8G8R8 +#define SPAN_VARS \ + const GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); \ + const GLFBDevBufferPtr fbdevbuf = fbdevctx->curBuffer; +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = fbdevbuf->curBottom - (Y) * fbdevbuf->rowStride + (X) * 3 +#define INC_PIXEL_PTR(P) P += 3 +#define STORE_RGB_PIXEL(P, X, Y, R, G, B) \ + P[0] = B; P[1] = G; P[2] = R +#define STORE_RGBA_PIXEL(P, X, Y, R, G, B, A) \ + P[0] = B; P[1] = G; P[2] = R +#define FETCH_RGBA_PIXEL(R, G, B, A, P) \ + R = P[2]; G = P[1]; B = P[0]; A = CHAN_MAX + +#include "swrast/s_spantemp.h" + + +/* 32-bit BGRA */ +#define NAME(PREFIX) PREFIX##_B8G8R8A8 +#define SPAN_VARS \ + const GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); \ + const GLFBDevBufferPtr fbdevbuf = fbdevctx->curBuffer; +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = fbdevbuf->curBottom - (Y) * fbdevbuf->rowStride + (X) * 4 +#define INC_PIXEL_PTR(P) P += 4 +#define STORE_RGB_PIXEL(P, X, Y, R, G, B) \ + P[0] = B; P[1] = G; P[2] = R; P[3] = 255 +#define STORE_RGBA_PIXEL(P, X, Y, R, G, B, A) \ + P[0] = B; P[1] = G; P[2] = R; P[3] = A +#define FETCH_RGBA_PIXEL(R, G, B, A, P) \ + R = P[2]; G = P[1]; B = P[0]; A = P[3] + +#include "swrast/s_spantemp.h" + + +/* 16-bit BGR (XXX implement dithering someday) */ +#define NAME(PREFIX) PREFIX##_B5G6R5 +#define SPAN_VARS \ + const GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); \ + const GLFBDevBufferPtr fbdevbuf = fbdevctx->curBuffer; +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) (fbdevbuf->curBottom - (Y) * fbdevbuf->rowStride + (X) * 2) +#define INC_PIXEL_PTR(P) P += 1 +#define STORE_RGB_PIXEL(P, X, Y, R, G, B) \ + *P = ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) ) +#define STORE_RGBA_PIXEL(P, X, Y, R, G, B, A) \ + *P = ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) ) +#define FETCH_RGBA_PIXEL(R, G, B, A, P) \ + R = ( (((*P) >> 8) & 0xf8) | (((*P) >> 11) & 0x7) ); \ + G = ( (((*P) >> 3) & 0xfc) | (((*P) >> 5) & 0x3) ); \ + B = ( (((*P) << 3) & 0xf8) | (((*P) ) & 0x7) ); \ + A = CHAN_MAX + +#include "swrast/s_spantemp.h" + + +/* 15-bit BGR (XXX implement dithering someday) */ +#define NAME(PREFIX) PREFIX##_B5G5R5 +#define SPAN_VARS \ + const GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); \ + const GLFBDevBufferPtr fbdevbuf = fbdevctx->curBuffer; +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) (fbdevbuf->curBottom - (Y) * fbdevbuf->rowStride + (X) * 2) +#define INC_PIXEL_PTR(P) P += 1 +#define STORE_RGB_PIXEL(P, X, Y, R, G, B) \ + *P = ( (((R) & 0xf8) << 7) | (((G) & 0xf8) << 2) | ((B) >> 3) ) +#define STORE_RGBA_PIXEL(P, X, Y, R, G, B, A) \ + *P = ( (((R) & 0xf8) << 7) | (((G) & 0xf8) << 2) | ((B) >> 3) ) +#define FETCH_RGBA_PIXEL(R, G, B, A, P) \ + R = ( (((*P) >> 7) & 0xf8) | (((*P) >> 10) & 0x7) ); \ + G = ( (((*P) >> 2) & 0xf8) | (((*P) >> 5) & 0x7) ); \ + B = ( (((*P) << 3) & 0xf8) | (((*P) ) & 0x7) ); \ + A = CHAN_MAX + +#include "swrast/s_spantemp.h" + + +/* 8-bit color index */ +#define NAME(PREFIX) PREFIX##_CI8 +#define SPAN_VARS \ + const GLFBDevContextPtr fbdevctx = GLFBDEV_CONTEXT(ctx); \ + const GLFBDevBufferPtr fbdevbuf = fbdevctx->curBuffer; +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = fbdevbuf->curBottom - (Y) * fbdevbuf->rowStride + (X) +#define INC_PIXEL_PTR(P) P += 1 +#define STORE_CI_PIXEL(P, CI) \ + P[0] = CI +#define FETCH_CI_PIXEL(CI, P) \ + CI = P[0] + +#include "swrast/s_spantemp.h" + +/**********************************************************************/ +/* Public API functions */ +/**********************************************************************/ + + +const char * +glFBDevGetString( int str ) +{ + switch (str) { + case GLFBDEV_VENDOR: + return "Mesa Project"; + case GLFBDEV_VERSION: + return "1.0.0"; + default: + return NULL; + } +} + + +const void * +glFBDevGetProcAddress( const char *procName ) +{ + struct name_address { + const char *name; + const void *func; + }; + static const struct name_address functions[] = { + { "glFBDevGetString", (void *) glFBDevGetString }, + { "glFBDevGetProcAddress", (void *) glFBDevGetProcAddress }, + { "glFBDevCreateVisual", (void *) glFBDevCreateVisual }, + { "glFBDevDestroyVisual", (void *) glFBDevDestroyVisual }, + { "glFBDevGetVisualAttrib", (void *) glFBDevGetVisualAttrib }, + { "glFBDevCreateBuffer", (void *) glFBDevCreateBuffer }, + { "glFBDevDestroyBuffer", (void *) glFBDevDestroyBuffer }, + { "glFBDevGetBufferAttrib", (void *) glFBDevGetBufferAttrib }, + { "glFBDevGetCurrentDrawBuffer", (void *) glFBDevGetCurrentDrawBuffer }, + { "glFBDevGetCurrentReadBuffer", (void *) glFBDevGetCurrentReadBuffer }, + { "glFBDevSwapBuffers", (void *) glFBDevSwapBuffers }, + { "glFBDevCreateContext", (void *) glFBDevCreateContext }, + { "glFBDevDestroyContext", (void *) glFBDevDestroyContext }, + { "glFBDevGetContextAttrib", (void *) glFBDevGetContextAttrib }, + { "glFBDevGetCurrentContext", (void *) glFBDevGetCurrentContext }, + { "glFBDevMakeCurrent", (void *) glFBDevMakeCurrent }, + { NULL, NULL } + }; + const struct name_address *entry; + for (entry = functions; entry->name; entry++) { + if (_mesa_strcmp(entry->name, procName) == 0) { + return entry->func; + } + } + return _glapi_get_proc_address(procName); +} + + +GLFBDevVisualPtr +glFBDevCreateVisual( const struct fb_fix_screeninfo *fixInfo, + const struct fb_var_screeninfo *varInfo, + const int *attribs ) +{ + GLFBDevVisualPtr vis; + const int *attrib; + GLboolean rgbFlag = GL_TRUE, dbFlag = GL_FALSE, stereoFlag = GL_FALSE; + GLint redBits = 0, greenBits = 0, blueBits = 0, alphaBits = 0; + GLint indexBits = 0, depthBits = 0, stencilBits = 0; + GLint accumRedBits = 0, accumGreenBits = 0; + GLint accumBlueBits = 0, accumAlphaBits = 0; + GLint numSamples = 0; + + ASSERT(fixInfo); + ASSERT(varInfo); + + vis = CALLOC_STRUCT(GLFBDevVisualRec); + if (!vis) + return NULL; + + vis->fix = *fixInfo; /* struct assignment */ + vis->var = *varInfo; /* struct assignment */ + + for (attrib = attribs; attrib && *attrib != GLFBDEV_NONE; attrib++) { + switch (*attrib) { + case GLFBDEV_DOUBLE_BUFFER: + dbFlag = GL_TRUE; + break; + case GLFBDEV_COLOR_INDEX: + rgbFlag = GL_FALSE; + break; + case GLFBDEV_DEPTH_SIZE: + depthBits = attrib[1]; + attrib++; + break; + case GLFBDEV_STENCIL_SIZE: + stencilBits = attrib[1]; + attrib++; + break; + case GLFBDEV_ACCUM_SIZE: + accumRedBits = accumGreenBits = accumBlueBits = accumAlphaBits + = attrib[1]; + attrib++; + break; + case GLFBDEV_LEVEL: + /* ignored for now */ + break; + default: + /* unexpected token */ + _mesa_free(vis); + return NULL; + } + } + + if (rgbFlag) { + redBits = varInfo->red.length; + greenBits = varInfo->green.length; + blueBits = varInfo->blue.length; + alphaBits = varInfo->transp.length; + + if ((fixInfo->visual == FB_VISUAL_TRUECOLOR || + fixInfo->visual == FB_VISUAL_DIRECTCOLOR) + && varInfo->bits_per_pixel == 24 + && varInfo->red.offset == 16 + && varInfo->green.offset == 8 + && varInfo->blue.offset == 0) { + vis->pixelFormat = PF_B8G8R8; + } + else if ((fixInfo->visual == FB_VISUAL_TRUECOLOR || + fixInfo->visual == FB_VISUAL_DIRECTCOLOR) + && varInfo->bits_per_pixel == 32 + && varInfo->red.offset == 16 + && varInfo->green.offset == 8 + && varInfo->blue.offset == 0 + && varInfo->transp.offset == 24) { + vis->pixelFormat = PF_B8G8R8A8; + } + else if ((fixInfo->visual == FB_VISUAL_TRUECOLOR || + fixInfo->visual == FB_VISUAL_DIRECTCOLOR) + && varInfo->bits_per_pixel == 16 + && varInfo->red.offset == 11 + && varInfo->green.offset == 5 + && varInfo->blue.offset == 0) { + vis->pixelFormat = PF_B5G6R5; + } + else if ((fixInfo->visual == FB_VISUAL_TRUECOLOR || + fixInfo->visual == FB_VISUAL_DIRECTCOLOR) + && varInfo->bits_per_pixel == 16 + && varInfo->red.offset == 10 + && varInfo->green.offset == 5 + && varInfo->blue.offset == 0) { + vis->pixelFormat = PF_B5G5R5; + } + else { + _mesa_problem(NULL, "Unsupported fbdev RGB visual/bitdepth!\n"); + /* + printf("fixInfo->visual = 0x%x\n", fixInfo->visual); + printf("varInfo->bits_per_pixel = %d\n", varInfo->bits_per_pixel); + printf("varInfo->red.offset = %d\n", varInfo->red.offset); + printf("varInfo->green.offset = %d\n", varInfo->green.offset); + printf("varInfo->blue.offset = %d\n", varInfo->blue.offset); + */ + _mesa_free(vis); + return NULL; + } + } + else { + indexBits = varInfo->bits_per_pixel; + if ((fixInfo->visual == FB_VISUAL_PSEUDOCOLOR || + fixInfo->visual == FB_VISUAL_STATIC_PSEUDOCOLOR) + && varInfo->bits_per_pixel == 8) { + vis->pixelFormat = PF_CI8; + } + else { + _mesa_problem(NULL, "Unsupported fbdev CI visual/bitdepth!\n"); + _mesa_free(vis); + return NULL; + } + } + + if (!_mesa_initialize_visual(&vis->glvisual, rgbFlag, dbFlag, stereoFlag, + redBits, greenBits, blueBits, alphaBits, + indexBits, depthBits, stencilBits, + accumRedBits, accumGreenBits, + accumBlueBits, accumAlphaBits, + numSamples)) { + /* something was invalid */ + _mesa_free(vis); + return NULL; + } + + return vis; +} + + +void +glFBDevDestroyVisual( GLFBDevVisualPtr visual ) +{ + if (visual) + _mesa_free(visual); +} + + +int +glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual, int attrib) +{ + (void) visual; + (void) attrib; + return -1; +} + + + +GLFBDevBufferPtr +glFBDevCreateBuffer( const struct fb_fix_screeninfo *fixInfo, + const struct fb_var_screeninfo *varInfo, + const GLFBDevVisualPtr visual, + void *frontBuffer, void *backBuffer, size_t size ) +{ + GLFBDevBufferPtr buf; + + ASSERT(visual); + ASSERT(frontBuffer); + ASSERT(size > 0); + + if (visual->fix.visual != fixInfo->visual || + visual->fix.type != fixInfo->type || + visual->var.bits_per_pixel != varInfo->bits_per_pixel || + visual->var.grayscale != varInfo->grayscale || + visual->var.red.offset != varInfo->red.offset || + visual->var.green.offset != varInfo->green.offset || + visual->var.blue.offset != varInfo->blue.offset || + visual->var.transp.offset != varInfo->transp.offset) { + /* visual mismatch! */ + return NULL; + } + + buf = CALLOC_STRUCT(GLFBDevBufferRec); + if (!buf) + return NULL; + + _mesa_initialize_framebuffer(&buf->glframebuffer, &visual->glvisual, + visual->glvisual.haveDepthBuffer, + visual->glvisual.haveStencilBuffer, + visual->glvisual.haveAccumBuffer, + GL_FALSE); + + buf->fix = *fixInfo; /* struct assignment */ + buf->var = *varInfo; /* struct assignment */ + buf->visual = visual; /* ptr assignment */ + buf->frontStart = frontBuffer; + buf->size = size; + buf->bytesPerPixel = visual->var.bits_per_pixel / 8; + buf->rowStride = visual->var.xres_virtual * buf->bytesPerPixel; + buf->frontBottom = (GLubyte *) buf->frontStart + + (visual->var.yres_virtual - 1) * buf->rowStride; + + if (visual->glvisual.doubleBufferMode) { + if (backBuffer) { + buf->backStart = backBuffer; + buf->mallocBackBuffer = GL_FALSE; + } + else { + buf->backStart = _mesa_malloc(size); + if (!buf->backStart) { + _mesa_free_framebuffer_data(&buf->glframebuffer); + _mesa_free(buf); + return NULL; + } + buf->mallocBackBuffer = GL_TRUE; + } + buf->backBottom = (GLubyte *) buf->backStart + + (visual->var.yres_virtual - 1) * buf->rowStride; + buf->curBottom = buf->backBottom; + } + else { + buf->backStart = NULL; + buf->mallocBackBuffer = GL_FALSE; + buf->backBottom = NULL; + buf->curBottom = buf->frontBottom; + } + + return buf; +} + + +void +glFBDevDestroyBuffer( GLFBDevBufferPtr buffer ) +{ + if (buffer) { + /* check if destroying the current buffer */ + GLFBDevBufferPtr curDraw = glFBDevGetCurrentDrawBuffer(); + GLFBDevBufferPtr curRead = glFBDevGetCurrentReadBuffer(); + if (buffer == curDraw || buffer == curRead) { + glFBDevMakeCurrent( NULL, NULL, NULL); + } + if (buffer->mallocBackBuffer) { + _mesa_free(buffer->backStart); + } + /* free the software depth, stencil, accum buffers */ + _mesa_free_framebuffer_data(&buffer->glframebuffer); + _mesa_free(buffer); + } +} + + +int +glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer, int attrib) +{ + (void) buffer; + (void) attrib; + return -1; +} + + +GLFBDevBufferPtr +glFBDevGetCurrentDrawBuffer( void ) +{ + GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext(); + if (fbdevctx) + return fbdevctx->drawBuffer; + else + return NULL; +} + + +GLFBDevBufferPtr +glFBDevGetCurrentReadBuffer( void ) +{ + GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext(); + if (fbdevctx) + return fbdevctx->readBuffer; + else + return NULL; +} + + +void +glFBDevSwapBuffers( GLFBDevBufferPtr buffer ) +{ + GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext(); + + if (!buffer || !buffer->visual->glvisual.doubleBufferMode) + return; + + /* check if swapping currently bound buffer */ + if (fbdevctx->drawBuffer == buffer) { + /* flush pending rendering */ + _mesa_notifySwapBuffers(&fbdevctx->glcontext); + } + + ASSERT(buffer->frontStart); + ASSERT(buffer->backStart); + _mesa_memcpy(buffer->frontStart, buffer->backStart, buffer->size); +} + + +GLFBDevContextPtr +glFBDevCreateContext( const GLFBDevVisualPtr visual, GLFBDevContextPtr share ) +{ + GLFBDevContextPtr ctx; + GLcontext *glctx; + + ASSERT(visual); + + ctx = CALLOC_STRUCT(GLFBDevContextRec); + if (!ctx) + return NULL; + + if (!_mesa_initialize_context(&ctx->glcontext, &visual->glvisual, + share ? &share->glcontext : NULL, + (void *) ctx, GL_FALSE)) { + _mesa_free(ctx); + return NULL; + } + + ctx->visual = visual; + + /* Create module contexts */ + glctx = (GLcontext *) &ctx->glcontext; + init_core_functions( glctx ); + _swrast_CreateContext( glctx ); + _ac_CreateContext( glctx ); + _tnl_CreateContext( glctx ); + _swsetup_CreateContext( glctx ); + _swsetup_Wakeup( glctx ); + + /* swrast init */ + { + struct swrast_device_driver *swdd; + swdd = _swrast_GetDeviceDriverReference( glctx ); + swdd->SetBuffer = set_buffer; + if (visual->pixelFormat == PF_B8G8R8) { + swdd->WriteRGBASpan = write_rgba_span_B8G8R8; + swdd->WriteRGBSpan = write_rgb_span_B8G8R8; + swdd->WriteMonoRGBASpan = write_monorgba_span_B8G8R8; + swdd->WriteRGBAPixels = write_rgba_pixels_B8G8R8; + swdd->WriteMonoRGBAPixels = write_monorgba_pixels_B8G8R8; + swdd->ReadRGBASpan = read_rgba_span_B8G8R8; + swdd->ReadRGBAPixels = read_rgba_pixels_B8G8R8; + } + else if (visual->pixelFormat == PF_B8G8R8A8) { + swdd->WriteRGBASpan = write_rgba_span_B8G8R8A8; + swdd->WriteRGBSpan = write_rgb_span_B8G8R8A8; + swdd->WriteMonoRGBASpan = write_monorgba_span_B8G8R8A8; + swdd->WriteRGBAPixels = write_rgba_pixels_B8G8R8A8; + swdd->WriteMonoRGBAPixels = write_monorgba_pixels_B8G8R8A8; + swdd->ReadRGBASpan = read_rgba_span_B8G8R8A8; + swdd->ReadRGBAPixels = read_rgba_pixels_B8G8R8A8; + } + else if (visual->pixelFormat == PF_B5G6R5) { + swdd->WriteRGBASpan = write_rgba_span_B5G6R5; + swdd->WriteRGBSpan = write_rgb_span_B5G6R5; + swdd->WriteMonoRGBASpan = write_monorgba_span_B5G6R5; + swdd->WriteRGBAPixels = write_rgba_pixels_B5G6R5; + swdd->WriteMonoRGBAPixels = write_monorgba_pixels_B5G6R5; + swdd->ReadRGBASpan = read_rgba_span_B5G6R5; + swdd->ReadRGBAPixels = read_rgba_pixels_B5G6R5; + } + else if (visual->pixelFormat == PF_B5G5R5) { + swdd->WriteRGBASpan = write_rgba_span_B5G5R5; + swdd->WriteRGBSpan = write_rgb_span_B5G5R5; + swdd->WriteMonoRGBASpan = write_monorgba_span_B5G5R5; + swdd->WriteRGBAPixels = write_rgba_pixels_B5G5R5; + swdd->WriteMonoRGBAPixels = write_monorgba_pixels_B5G5R5; + swdd->ReadRGBASpan = read_rgba_span_B5G5R5; + swdd->ReadRGBAPixels = read_rgba_pixels_B5G5R5; + } + else if (visual->pixelFormat == PF_CI8) { + swdd->WriteCI32Span = write_index32_span_CI8; + swdd->WriteCI8Span = write_index8_span_CI8; + swdd->WriteMonoCISpan = write_monoindex_span_CI8; + swdd->WriteCI32Pixels = write_index_pixels_CI8; + swdd->WriteMonoCIPixels = write_monoindex_pixels_CI8; + swdd->ReadCI32Span = read_index_span_CI8; + swdd->ReadCI32Pixels = read_index_pixels_CI8; + } + else { + _mesa_printf("bad pixelformat: %d\n", visual->pixelFormat); + } + } + + /* use default TCL pipeline */ + { + TNLcontext *tnl = TNL_CONTEXT(glctx); + tnl->Driver.RunPipeline = _tnl_run_pipeline; + } + + _mesa_enable_sw_extensions(glctx); + + return ctx; +} + + +void +glFBDevDestroyContext( GLFBDevContextPtr context ) +{ + GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext(); + + if (context) { + if (fbdevctx == context) { + /* destroying current context */ + _mesa_make_current2(NULL, NULL, NULL); + _mesa_notifyDestroy(&context->glcontext); + } + _mesa_free_context_data(&context->glcontext); + _mesa_free(context); + } +} + + +int +glFBDevGetContextAttrib( const GLFBDevContextPtr context, int attrib) +{ + (void) context; + (void) attrib; + return -1; +} + + +GLFBDevContextPtr +glFBDevGetCurrentContext( void ) +{ + GET_CURRENT_CONTEXT(ctx); + return (GLFBDevContextPtr) ctx; +} + + +int +glFBDevMakeCurrent( GLFBDevContextPtr context, + GLFBDevBufferPtr drawBuffer, + GLFBDevBufferPtr readBuffer ) +{ + if (context && drawBuffer && readBuffer) { + /* Make sure the context's visual and the buffers' visuals match. + * XXX we might do this by comparing specific fields like bits_per_pixel, + * visual, etc. in the future. + */ + if (context->visual != drawBuffer->visual || + context->visual != readBuffer->visual) { + return 0; + } + _mesa_make_current2( &context->glcontext, + &drawBuffer->glframebuffer, + &readBuffer->glframebuffer ); + context->drawBuffer = drawBuffer; + context->readBuffer = readBuffer; + context->curBuffer = drawBuffer; + } + else { + /* unbind */ + _mesa_make_current2( NULL, NULL, NULL ); + } + + return 1; +} + +#endif /* USE_GLFBDEV_DRIVER */ + |