diff options
Diffstat (limited to 'src/mesa/drivers/dri/fb/fb_egl.c')
| -rw-r--r-- | src/mesa/drivers/dri/fb/fb_egl.c | 881 |
1 files changed, 0 insertions, 881 deletions
diff --git a/src/mesa/drivers/dri/fb/fb_egl.c b/src/mesa/drivers/dri/fb/fb_egl.c deleted file mode 100644 index 02e44bb8eed..00000000000 --- a/src/mesa/drivers/dri/fb/fb_egl.c +++ /dev/null @@ -1,881 +0,0 @@ -/* - * Test egl driver for fb_dri.so - */ -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <dirent.h> -#include <errno.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <linux/fb.h> - -#include "utils.h" -#include "buffers.h" -#include "main/extensions.h" -#include "main/framebuffer.h" -#include "main/renderbuffer.h" -#include "vbo/vbo.h" -#include "swrast/swrast.h" -#include "swrast_setup/swrast_setup.h" -#include "tnl/tnl.h" -#include "tnl/tcontext.h" -#include "tnl/t_pipeline.h" -#include "drivers/common/driverfuncs.h" -#include "drirenderbuffer.h" - -#include "eglconfig.h" -#include "eglmain/context.h" -#include "egldisplay.h" -#include "egldriver.h" -#include "eglglobals.h" -#include "eglmode.h" -#include "eglscreen.h" -#include "eglsurface.h" - -extern void -fbSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis); - -/** - * fb driver-specific driver class derived from _EGLDriver - */ -typedef struct fb_driver -{ - _EGLDriver Base; /* base class/object */ - GLuint fbStuff; -} fbDriver; - -/** - * fb display-specific driver class derived from _EGLDisplay - */ -typedef struct fb_display -{ - _EGLDisplay Base; /* base class/object */ - void *pFB; -} fbDisplay; - -/** - * fb driver-specific screen class derived from _EGLScreen - */ -typedef struct fb_screen -{ - _EGLScreen Base; - char fb[NAME_MAX]; -} fbScreen; - - -/** - * fb driver-specific surface class derived from _EGLSurface - */ -typedef struct fb_surface -{ - _EGLSurface Base; /* base class/object */ - struct gl_framebuffer *mesa_framebuffer; -} fbSurface; - - -/** - * fb driver-specific context class derived from _EGLContext - */ -typedef struct fb_context -{ - _EGLContext Base; /* base class/object */ - GLcontext *glCtx; - struct { - __DRIcontext *context; - __DRIscreen *screen; - __DRIdrawable *drawable; /* drawable bound to this ctx */ - } dri; -} fbContext, *fbContextPtr; - -#define FB_CONTEXT(ctx) ((fbContextPtr)(ctx->DriverCtx)) - - -static EGLBoolean -fbFillInConfigs(_EGLDisplay *disp, unsigned pixel_bits, unsigned depth_bits, - unsigned stencil_bits, GLboolean have_back_buffer) { - _EGLConfig *configs; - _EGLConfig *c; - unsigned int i, num_configs; - unsigned int depth_buffer_factor; - unsigned int back_buffer_factor; - GLenum fb_format; - GLenum fb_type; - - /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy - * enough to add support. Basically, if a context is created with an - * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping - * will never be used. - */ - static const GLenum back_buffer_modes[] = { - GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */ - }; - - uint8_t depth_bits_array[2]; - uint8_t stencil_bits_array[2]; - - depth_bits_array[0] = 0; - depth_bits_array[1] = depth_bits; - - /* Just like with the accumulation buffer, always provide some modes - * with a stencil buffer. It will be a sw fallback, but some apps won't - * care about that. - */ - stencil_bits_array[0] = 0; - stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits; - - depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1; - back_buffer_factor = (have_back_buffer) ? 2 : 1; - - num_configs = depth_buffer_factor * back_buffer_factor * 2; - - if (pixel_bits == 16) { - fb_format = GL_RGB; - fb_type = GL_UNSIGNED_SHORT_5_6_5; - } else { - fb_format = GL_RGBA; - fb_type = GL_UNSIGNED_INT_8_8_8_8_REV; - } - - configs = calloc(sizeof(*configs), num_configs); - c = configs; - if (!_eglFillInConfigs(c, fb_format, fb_type, - depth_bits_array, stencil_bits_array, depth_buffer_factor, - back_buffer_modes, back_buffer_factor, - GLX_TRUE_COLOR)) { - fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", - __func__, __LINE__); - return EGL_FALSE; - } - - /* Mark the visual as slow if there are "fake" stencil bits. - */ - for (i = 0, c = configs; i < num_configs; i++, c++) { - int stencil = GET_CONFIG_ATTRIB(c, EGL_STENCIL_SIZE); - if ((stencil != 0) && (stencil != stencil_bits)) { - SET_CONFIG_ATTRIB(c, EGL_CONFIG_CAVEAT, EGL_SLOW_CONFIG); - } - } - - for (i = 0, c = configs; i < num_configs; i++, c++) - _eglAddConfig(disp, c); - - free(configs); - - return EGL_TRUE; -} - -static EGLBoolean -fbSetupFramebuffer(fbDisplay *disp, char *fbdev) -{ - int fd; - char dev[20]; - struct fb_var_screeninfo varInfo; - struct fb_fix_screeninfo fixedInfo; - - snprintf(dev, sizeof(dev), "/dev/%s", fbdev); - - /* open the framebuffer device */ - fd = open(dev, O_RDWR); - if (fd < 0) { - fprintf(stderr, "Error opening %s: %s\n", fbdev, strerror(errno)); - return EGL_FALSE; - } - - /* get the original variable screen info */ - if (ioctl(fd, FBIOGET_VSCREENINFO, &varInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n", - strerror(errno)); - return EGL_FALSE; - } - - /* Turn off hw accels (otherwise mmap of mmio region will be - * refused) - */ - if (varInfo.accel_flags) { - varInfo.accel_flags = 0; - if (ioctl(fd, FBIOPUT_VSCREENINFO, &varInfo)) { - fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n", - strerror(errno)); - return EGL_FALSE; - } - } - - /* Get the fixed screen info */ - if (ioctl(fd, FBIOGET_FSCREENINFO, &fixedInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n", - strerror(errno)); - return EGL_FALSE; - } - - if (fixedInfo.visual == FB_VISUAL_DIRECTCOLOR) { - struct fb_cmap cmap; - unsigned short red[256], green[256], blue[256]; - int rcols = 1 << varInfo.red.length; - int gcols = 1 << varInfo.green.length; - int bcols = 1 << varInfo.blue.length; - int i; - - cmap.start = 0; - cmap.len = gcols; - cmap.red = red; - cmap.green = green; - cmap.blue = blue; - cmap.transp = NULL; - - for (i = 0; i < rcols ; i++) - red[i] = (65536/(rcols-1)) * i; - - for (i = 0; i < gcols ; i++) - green[i] = (65536/(gcols-1)) * i; - - for (i = 0; i < bcols ; i++) - blue[i] = (65536/(bcols-1)) * i; - - if (ioctl(fd, FBIOPUTCMAP, (void *) &cmap) < 0) { - fprintf(stderr, "ioctl(FBIOPUTCMAP) failed [%d]\n", i); - exit(1); - } - } - - /* mmap the framebuffer into our address space */ - if (!disp->pFB) - disp->pFB = (caddr_t)mmap(0, /* start */ - fixedInfo.smem_len, /* bytes */ - PROT_READ | PROT_WRITE, /* prot */ - MAP_SHARED, /* flags */ - fd, /* fd */ - 0); /* offset */ - if (disp->pFB == (caddr_t)-1) { - fprintf(stderr, "error: unable to mmap framebuffer: %s\n", - strerror(errno)); - return EGL_FALSE; - } - - return EGL_TRUE; -} - -const char *sysfs = "/sys/class/graphics"; - -static EGLBoolean -fbInitialize(_EGLDriver *drv, EGLDisplay dpy, EGLint *major, EGLint *minor) -{ - _EGLDisplay *disp = _eglLookupDisplay(dpy); - fbDisplay *display; - fbScreen *s; - _EGLScreen *scrn; - char c; - unsigned int x, y, r; - DIR *dir; - FILE *file; - struct dirent *dirent; - char path[NAME_MAX]; - - /* Switch display structure to one with our private fields */ - display = calloc(1, sizeof(*display)); - display->Base = *disp; - _eglHashInsert(_eglGlobal.Displays, disp->Handle, display); - free(disp); - - *major = 1; - *minor = 0; - - dir = opendir(sysfs); - if (!dir) { - printf("EGL - %s framebuffer device not found.", sysfs); - return EGL_FALSE; - } - - while ((dirent = readdir(dir))) { /* assignment! */ - - if (dirent->d_name[0] != 'f') - continue; - if (dirent->d_name[1] != 'b') - continue; - - if (fbSetupFramebuffer(display, dirent->d_name) == EGL_FALSE) - continue; - - /* Create a screen */ - s = (fbScreen *) calloc(1, sizeof(fbScreen)); - if (!s) - return EGL_FALSE; - - strncpy(s->fb, dirent->d_name, NAME_MAX); - scrn = &s->Base; - _eglInitScreen(scrn); - _eglAddScreen(&display->Base, scrn); - - snprintf(path, sizeof(path), "%s/%s/modes", sysfs, s->fb); - file = fopen(path, "r"); - while (fgets(path, sizeof(path), file)) { - sscanf(path, "%c:%ux%u-%u", &c, &x, &y, &r); - _eglAddMode(scrn, x, y, r * 1000, path); - } - fclose(file); - - fbFillInConfigs(&display->Base, 32, 24, 8, 1); - - } - closedir(dir); - - drv->Initialized = EGL_TRUE; - return EGL_TRUE; -} - - -static fbDisplay * -Lookup_fbDisplay(EGLDisplay dpy) -{ - _EGLDisplay *d = _eglLookupDisplay(dpy); - return (fbDisplay *) d; -} - - -static fbScreen * -Lookup_fbScreen(EGLDisplay dpy, EGLScreenMESA screen) -{ - _EGLScreen *s = _eglLookupScreen(dpy, screen); - return (fbScreen *) s; -} - - -static fbContext * -Lookup_fbContext(EGLContext ctx) -{ - _EGLContext *c = _eglLookupContext(ctx); - return (fbContext *) c; -} - - -static fbSurface * -Lookup_fbSurface(EGLSurface surf) -{ - _EGLSurface *s = _eglLookupSurface(surf); - return (fbSurface *) s; -} - - -static EGLBoolean -fbTerminate(_EGLDriver *drv, EGLDisplay dpy) -{ - fbDisplay *display = Lookup_fbDisplay(dpy); - _eglCleanupDisplay(&display->Base); - free(display); - free(drv); - return EGL_TRUE; -} - - -static const GLubyte * -get_string(GLcontext *ctx, GLenum pname) -{ - (void) ctx; - switch (pname) { - case GL_RENDERER: - return (const GLubyte *) "Mesa dumb framebuffer"; - 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 ); - _vbo_InvalidateState( ctx, new_state ); - _tnl_InvalidateState( ctx, new_state ); -} - - -/** - * Called by ctx->Driver.GetBufferSize from in core Mesa to query the - * current framebuffer size. - */ -static void -get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) -{ - *width = buffer->Width; - *height = buffer->Height; -} - - -static void -updateFramebufferSize(GLcontext *ctx) -{ - fbContextPtr fbmesa = FB_CONTEXT(ctx); - struct gl_framebuffer *fb = ctx->WinSysDrawBuffer; - if (fbmesa->dri.drawable->w != fb->Width || - fbmesa->dri.drawable->h != fb->Height) { - driUpdateFramebufferSize(ctx, fbmesa->dri.drawable); - } -} - -static void -viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) -{ - /* XXX this should be called after we acquire the DRI lock, not here */ - updateFramebufferSize(ctx); -} - - -static void -init_core_functions( struct dd_function_table *functions ) -{ - functions->GetString = get_string; - functions->UpdateState = update_state; - functions->GetBufferSize = get_buffer_size; - functions->Viewport = viewport; - - functions->Clear = _swrast_Clear; /* could accelerate with blits */ -} - - -static EGLContext -fbCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, EGLContext share_list, const EGLint *attrib_list) -{ - GLcontext *ctx; - _EGLConfig *conf; - fbContext *c; - _EGLDisplay *disp = _eglLookupDisplay(dpy); - struct dd_function_table functions; - GLvisual vis; - int i; - - conf = _eglLookupConfig(drv, dpy, config); - if (!conf) { - _eglError(EGL_BAD_CONFIG, "eglCreateContext"); - return EGL_NO_CONTEXT; - } - - for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) { - switch (attrib_list[i]) { - /* no attribs defined for now */ - default: - _eglError(EGL_BAD_ATTRIBUTE, "eglCreateContext"); - return EGL_NO_CONTEXT; - } - } - - c = (fbContext *) calloc(1, sizeof(fbContext)); - if (!c) - return EGL_NO_CONTEXT; - - _eglInitContext(&c->Base); - c->Base.Display = disp; - c->Base.Config = conf; - c->Base.DrawSurface = EGL_NO_SURFACE; - c->Base.ReadSurface = EGL_NO_SURFACE; - - /* link to display */ - _eglLinkContext(&c->Base, disp); - assert(c->Base.Handle); - - /* Init default driver functions then plug in our FBdev-specific functions - */ - _mesa_init_driver_functions(&functions); - init_core_functions(&functions); - - _eglConfigToContextModesRec(conf, &vis); - - ctx = c->glCtx = _mesa_create_context(&vis, NULL, &functions, (void *)c); - if (!c->glCtx) { - _mesa_free(c); - return GL_FALSE; - } - - /* Create module contexts */ - _swrast_CreateContext( ctx ); - _vbo_CreateContext( ctx ); - _tnl_CreateContext( ctx ); - _swsetup_CreateContext( ctx ); - _swsetup_Wakeup( ctx ); - - - /* use default TCL pipeline */ - { - TNLcontext *tnl = TNL_CONTEXT(ctx); - tnl->Driver.RunPipeline = _tnl_run_pipeline; - } - - _mesa_enable_sw_extensions(ctx); - - return c->Base.Handle; -} - - -static EGLSurface -fbCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list) -{ - int i; - for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) { - switch (attrib_list[i]) { - /* no attribs at this time */ - default: - _eglError(EGL_BAD_ATTRIBUTE, "eglCreateWindowSurface"); - return EGL_NO_SURFACE; - } - } - printf("eglCreateWindowSurface()\n"); - /* XXX unfinished */ - - return EGL_NO_SURFACE; -} - - -static EGLSurface -fbCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list) -{ - _EGLConfig *conf; - EGLint i; - - conf = _eglLookupConfig(drv, dpy, config); - if (!conf) { - _eglError(EGL_BAD_CONFIG, "eglCreatePixmapSurface"); - return EGL_NO_SURFACE; - } - - for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) { - switch (attrib_list[i]) { - /* no attribs at this time */ - default: - _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePixmapSurface"); - return EGL_NO_SURFACE; - } - } - - if (conf->Attrib[EGL_SURFACE_TYPE - FIRST_ATTRIB] == 0) { - _eglError(EGL_BAD_MATCH, "eglCreatePixmapSurface"); - return EGL_NO_SURFACE; - } - - printf("eglCreatePixmapSurface()\n"); - return EGL_NO_SURFACE; -} - - -static EGLSurface -fbCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list) -{ - fbSurface *surf; - - surf = (fbSurface *) calloc(1, sizeof(fbSurface)); - if (!surf) { - return EGL_NO_SURFACE; - } - - if (_eglInitPbufferSurface(&surf->Base, drv, dpy, config, attrib_list) == EGL_NO_SURFACE) { - free(surf); - return EGL_NO_SURFACE; - } - - /* create software-based pbuffer */ - { - GLcontext *ctx = NULL; /* this _should_ be OK */ - GLvisual vis; - _EGLConfig *conf = _eglLookupConfig(drv, dpy, config); - assert(conf); /* bad config should be caught earlier */ - _eglConfigToContextModesRec(conf, &vis); - - surf->mesa_framebuffer = _mesa_create_framebuffer(&vis); - _mesa_add_soft_renderbuffers(surf->mesa_framebuffer, - GL_TRUE, /* color bufs */ - vis.haveDepthBuffer, - vis.haveStencilBuffer, - vis.haveAccumBuffer, - GL_FALSE, /* alpha */ - GL_FALSE /* aux */ ); - - /* set pbuffer/framebuffer size */ - _mesa_resize_framebuffer(ctx, surf->mesa_framebuffer, - surf->Base.Width, surf->Base.Height); - } - - return surf->Base.Handle; -} - - -static EGLBoolean -fbDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface) -{ - fbSurface *fs = Lookup_fbSurface(surface); - _eglUnlinkSurface(&fs->Base); - if (!_eglIsSurfaceBound(&fs->Base)) - free(fs); - return EGL_TRUE; -} - - -static EGLBoolean -fbDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext context) -{ - fbContext *fc = Lookup_fbContext(context); - _eglUnlinkContext(&fc->Base); - if (!_eglIsContextBound(&fc->Base)) - free(fc); - return EGL_TRUE; -} - - -static EGLBoolean -fbMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext context) -{ - fbSurface *readSurf = Lookup_fbSurface(read); - fbSurface *drawSurf = Lookup_fbSurface(draw); - fbContext *ctx = Lookup_fbContext(context); - EGLBoolean b; - - b = _eglMakeCurrent(drv, dpy, draw, read, context); - if (!b) - return EGL_FALSE; - - if (ctx) { - _mesa_make_current( ctx->glCtx, - drawSurf->mesa_framebuffer, - readSurf->mesa_framebuffer); - } else - _mesa_make_current( NULL, NULL, NULL ); - - return EGL_TRUE; -} - - -/** - * Create a drawing surface which can be directly displayed on a screen. - */ -static EGLSurface -fbCreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig cfg, - const EGLint *attrib_list) -{ - _EGLConfig *config = _eglLookupConfig(drv, dpy, cfg); - fbDisplay *display = Lookup_fbDisplay(dpy); - fbSurface *surface; - EGLSurface surf; - GLvisual vis; - GLcontext *ctx = NULL; /* this should be OK */ - int origin, bytesPerPixel; - int width, height, stride; - - surface = (fbSurface *) malloc(sizeof(*surface)); - if (!surface) { - return EGL_NO_SURFACE; - } - - /* init base class, error check, etc. */ - surf = _eglInitScreenSurface(&surface->Base, drv, dpy, cfg, attrib_list); - if (surf == EGL_NO_SURFACE) { - free(surface); - return EGL_NO_SURFACE; - } - - /* convert EGLConfig to GLvisual */ - _eglConfigToContextModesRec(config, &vis); - - /* create Mesa framebuffer */ - surface->mesa_framebuffer = _mesa_create_framebuffer(&vis); - if (!surface->mesa_framebuffer) { - free(surface); - _eglUnlinkSurface(&surface->Base); - return EGL_NO_SURFACE; - } - - width = surface->Base.Width; - height = surface->Base.Height; - bytesPerPixel = vis.rgbBits / 8; - stride = width * bytesPerPixel; - origin = 0; - - /* front color renderbuffer */ - { - driRenderbuffer *drb = driNewRenderbuffer(MESA_FORMAT_ARGB8888, display->pFB, - bytesPerPixel, - origin, stride, NULL); - fbSetSpanFunctions(drb, &vis); - _mesa_add_renderbuffer(surface->mesa_framebuffer, - BUFFER_FRONT_LEFT, &drb->Base); - } - - /* back color renderbuffer */ - if (vis.doubleBufferMode) { - GLubyte *backBuf = _mesa_malloc(stride * height); - driRenderbuffer *drb = driNewRenderbuffer(MESA_FORMAT_ARGB8888, backBuf, - bytesPerPixel, - origin, stride, NULL); - fbSetSpanFunctions(drb, &vis); - _mesa_add_renderbuffer(surface->mesa_framebuffer, - BUFFER_BACK_LEFT, &drb->Base); - } - - /* other renderbuffers- software based */ - _mesa_add_soft_renderbuffers(surface->mesa_framebuffer, - GL_FALSE, /* color */ - vis.haveDepthBuffer, - vis.haveStencilBuffer, - vis.haveAccumBuffer, - GL_FALSE, /* alpha */ - GL_FALSE /* aux */); - - _mesa_resize_framebuffer(ctx, surface->mesa_framebuffer, width, height); - - return surf; -} - - -/** - * Show the given surface on the named screen. - * If surface is EGL_NO_SURFACE, disable the screen's output. - */ -static EGLBoolean -fbShowSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen, - EGLSurface surface, EGLModeMESA m) -{ - fbDisplay *display = Lookup_fbDisplay(dpy); - fbScreen *scrn = Lookup_fbScreen(dpy, screen); - fbSurface *surf = Lookup_fbSurface(surface); - FILE *file; - char buffer[NAME_MAX]; - _EGLMode *mode = _eglLookupMode(dpy, m); - int bits; - - if (!_eglShowSurfaceMESA(drv, dpy, screen, surface, m)) - return EGL_FALSE; - - snprintf(buffer, sizeof(buffer), "%s/%s/blank", sysfs, scrn->fb); - - file = fopen(buffer, "r+"); - if (!file) { -err: - printf("chown all fb sysfs attrib to allow write - %s\n", buffer); - return EGL_FALSE; - } - snprintf(buffer, sizeof(buffer), "%d", (m == EGL_NO_MODE_MESA ? VESA_POWERDOWN : VESA_VSYNC_SUSPEND)); - fputs(buffer, file); - fclose(file); - - if (m == EGL_NO_MODE_MESA) - return EGL_TRUE; - - snprintf(buffer, sizeof(buffer), "%s/%s/mode", sysfs, scrn->fb); - - file = fopen(buffer, "r+"); - if (!file) - goto err; - fputs(mode->Name, file); - fclose(file); - - snprintf(buffer, sizeof(buffer), "%s/%s/bits_per_pixel", sysfs, scrn->fb); - - file = fopen(buffer, "r+"); - if (!file) - goto err; - bits = GET_CONFIG_ATTRIB(surf->Base.Config, EGL_BUFFER_SIZE); - snprintf(buffer, sizeof(buffer), "%d", bits); - fputs(buffer, file); - fclose(file); - - fbSetupFramebuffer(display, scrn->fb); - - snprintf(buffer, sizeof(buffer), "%s/%s/blank", sysfs, scrn->fb); - - file = fopen(buffer, "r+"); - if (!file) - goto err; - - snprintf(buffer, sizeof(buffer), "%d", VESA_NO_BLANKING); - fputs(buffer, file); - fclose(file); - - return EGL_TRUE; -} - - -/* If the backbuffer is on a videocard, this is extraordinarily slow! - */ -static EGLBoolean -fbSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw) -{ - fbContext *context = (fbContext *)_eglGetCurrentContext(); - fbSurface *fs = Lookup_fbSurface(draw); - struct gl_renderbuffer * front_renderbuffer = fs->mesa_framebuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; - void *frontBuffer = front_renderbuffer->Data; - int currentPitch = ((driRenderbuffer *)front_renderbuffer)->pitch; - void *backBuffer = fs->mesa_framebuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer->Data; - - if (!_eglSwapBuffers(drv, dpy, draw)) - return EGL_FALSE; - - if (context) { - GLcontext *ctx = context->glCtx; - - if (ctx->Visual.doubleBufferMode) { - int i; - int offset = 0; - char *tmp = _mesa_malloc(currentPitch); - - _mesa_notifySwapBuffers( ctx ); /* flush pending rendering comands */ - - ASSERT(frontBuffer); - ASSERT(backBuffer); - - for (i = 0; i < fs->Base.Height; i++) { - _mesa_memcpy(tmp, (char *) backBuffer + offset, - currentPitch); - _mesa_memcpy((char *) frontBuffer + offset, tmp, - currentPitch); - offset += currentPitch; - } - - _mesa_free(tmp); - } - } - else { - /* XXX this shouldn't be an error but we can't handle it for now */ - _mesa_problem(NULL, "fbSwapBuffers: drawable has no context!\n"); - return EGL_FALSE; - } - return EGL_TRUE; -} - - -/** - * The bootstrap function. Return a new fbDriver object and - * plug in API functions. - */ -_EGLDriver * -_eglMain(_EGLDisplay *dpy) -{ - fbDriver *fb; - - fb = (fbDriver *) calloc(1, sizeof(fbDriver)); - if (!fb) { - return NULL; - } - - /* First fill in the dispatch table with defaults */ - _eglInitDriverFallbacks(&fb->Base); - - /* then plug in our fb-specific functions */ - fb->Base.Initialize = fbInitialize; - fb->Base.Terminate = fbTerminate; - fb->Base.CreateContext = fbCreateContext; - fb->Base.MakeCurrent = fbMakeCurrent; - fb->Base.CreateWindowSurface = fbCreateWindowSurface; - fb->Base.CreatePixmapSurface = fbCreatePixmapSurface; - fb->Base.CreatePbufferSurface = fbCreatePbufferSurface; - fb->Base.DestroySurface = fbDestroySurface; - fb->Base.DestroyContext = fbDestroyContext; - fb->Base.CreateScreenSurfaceMESA = fbCreateScreenSurfaceMESA; - fb->Base.ShowSurfaceMESA = fbShowSurfaceMESA; - fb->Base.SwapBuffers = fbSwapBuffers; - - /* enable supported extensions */ - fb->Base.MESA_screen_surface = EGL_TRUE; - fb->Base.MESA_copy_context = EGL_TRUE; - - return &fb->Base; -} |