diff options
Diffstat (limited to 'progs/xdemos/pbutil.c')
| -rw-r--r-- | progs/xdemos/pbutil.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/progs/xdemos/pbutil.c b/progs/xdemos/pbutil.c deleted file mode 100644 index ce133d012dc..00000000000 --- a/progs/xdemos/pbutil.c +++ /dev/null @@ -1,446 +0,0 @@ - -/* - * OpenGL pbuffers utility functions. - * - * Brian Paul - * Original code: April 1997 - * Updated on 5 October 2002 - * Updated again on 3 January 2005 to use GLX 1.3 functions in preference - * to the GLX_SGIX_fbconfig/pbuffer extensions. - */ - -#include <stdio.h> -#include <string.h> -#include "pbutil.h" - - -/** - * Test if we pixel buffers are available for a particular X screen. - * Input: dpy - the X display - * screen - screen number - * Return: 0 = fbconfigs not available. - * 1 = fbconfigs are available via GLX 1.3. - * 2 = fbconfigs and pbuffers are available via GLX_SGIX_fbconfig - */ -int -QueryFBConfig(Display *dpy, int screen) -{ -#if defined(GLX_VERSION_1_3) - { - /* GLX 1.3 supports pbuffers */ - int glxVersionMajor, glxVersionMinor; - if (!glXQueryVersion(dpy, &glxVersionMajor, &glxVersionMinor)) { - /* GLX not available! */ - return 0; - } - if (glxVersionMajor * 100 + glxVersionMinor >= 103) { - return 1; - } - /* fall-through */ - } -#endif - - /* Try the SGIX extensions */ - { - char *extensions; - extensions = (char *) glXQueryServerString(dpy, screen, GLX_EXTENSIONS); - if (extensions && strstr(extensions,"GLX_SGIX_fbconfig")) { - return 2; - } - } - - return 0; -} - -/** - * Test if we pixel buffers are available for a particular X screen. - * Input: dpy - the X display - * screen - screen number - * Return: 0 = pixel buffers not available. - * 1 = pixel buffers are available via GLX 1.3. - * 2 = pixel buffers are available via GLX_SGIX_fbconfig/pbuffer. - */ -int -QueryPbuffers(Display *dpy, int screen) -{ - int ret; - - ret = QueryFBConfig(dpy, screen); - if (ret == 2) { - char *extensions; - extensions = (char *) glXQueryServerString(dpy, screen, GLX_EXTENSIONS); - if (extensions && strstr(extensions, "GLX_SGIX_pbuffer")) - return 2; - else - return 0; - } - else - return ret; -} - -FBCONFIG * -ChooseFBConfig(Display *dpy, int screen, const int attribs[], int *nConfigs) -{ - int fbcSupport = QueryPbuffers(dpy, screen); -#if defined(GLX_VERSION_1_3) - if (fbcSupport == 1) { - return glXChooseFBConfig(dpy, screen, attribs, nConfigs); - } -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (fbcSupport == 2) { - return glXChooseFBConfigSGIX(dpy, screen, (int *) attribs, nConfigs); - } -#endif - return NULL; -} - - -FBCONFIG * -GetAllFBConfigs(Display *dpy, int screen, int *nConfigs) -{ - int fbcSupport = QueryFBConfig(dpy, screen); -#if defined(GLX_VERSION_1_3) - if (fbcSupport == 1) { - return glXGetFBConfigs(dpy, screen, nConfigs); - } -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (fbcSupport == 2) { - /* The GLX_SGIX_fbconfig extensions says to pass NULL to get list - * of all available configurations. - */ - return glXChooseFBConfigSGIX(dpy, screen, NULL, nConfigs); - } -#endif - return NULL; -} - - -XVisualInfo * -GetVisualFromFBConfig(Display *dpy, int screen, FBCONFIG config) -{ - int fbcSupport = QueryFBConfig(dpy, screen); -#if defined(GLX_VERSION_1_3) - if (fbcSupport == 1) { - return glXGetVisualFromFBConfig(dpy, config); - } -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (fbcSupport == 2) { - return glXGetVisualFromFBConfigSGIX(dpy, config); - } -#endif - return NULL; -} - - -/** - * Either use glXGetFBConfigAttrib() or glXGetFBConfigAttribSGIX() - * to query an fbconfig attribute. - */ -static int -GetFBConfigAttrib(Display *dpy, int screen, -#if defined(GLX_VERSION_1_3) - const GLXFBConfig config, -#elif defined(GLX_SGIX_fbconfig) - const GLXFBConfigSGIX config, -#endif - int attrib - ) -{ - int fbcSupport = QueryFBConfig(dpy, screen); - int value = 0; - -#if defined(GLX_VERSION_1_3) - if (fbcSupport == 1) { - /* ok */ - if (glXGetFBConfigAttrib(dpy, config, attrib, &value) != 0) { - value = 0; - } - return value; - } - /* fall-through */ -#endif - -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (fbcSupport == 2) { - if (glXGetFBConfigAttribSGIX(dpy, config, attrib, &value) != 0) { - value = 0; - } - return value; - } -#endif - - return value; -} - - - -/** - * Print parameters for a GLXFBConfig to stdout. - * Input: dpy - the X display - * screen - the X screen number - * fbConfig - the fbconfig handle - * horizFormat - if true, print in horizontal format - */ -void -PrintFBConfigInfo(Display *dpy, int screen, FBCONFIG config, Bool horizFormat) -{ - PBUFFER pBuffer; - int width=2, height=2; - int bufferSize, level, doubleBuffer, stereo, auxBuffers; - int redSize, greenSize, blueSize, alphaSize; - int depthSize, stencilSize; - int accumRedSize, accumBlueSize, accumGreenSize, accumAlphaSize; - int sampleBuffers, samples; - int drawableType, renderType, xRenderable, xVisual, id; - int maxWidth, maxHeight, maxPixels; - int optWidth, optHeight; - int floatComponents = 0; - - /* do queries using the GLX 1.3 tokens (same as the SGIX tokens) */ - bufferSize = GetFBConfigAttrib(dpy, screen, config, GLX_BUFFER_SIZE); - level = GetFBConfigAttrib(dpy, screen, config, GLX_LEVEL); - doubleBuffer = GetFBConfigAttrib(dpy, screen, config, GLX_DOUBLEBUFFER); - stereo = GetFBConfigAttrib(dpy, screen, config, GLX_STEREO); - auxBuffers = GetFBConfigAttrib(dpy, screen, config, GLX_AUX_BUFFERS); - redSize = GetFBConfigAttrib(dpy, screen, config, GLX_RED_SIZE); - greenSize = GetFBConfigAttrib(dpy, screen, config, GLX_GREEN_SIZE); - blueSize = GetFBConfigAttrib(dpy, screen, config, GLX_BLUE_SIZE); - alphaSize = GetFBConfigAttrib(dpy, screen, config, GLX_ALPHA_SIZE); - depthSize = GetFBConfigAttrib(dpy, screen, config, GLX_DEPTH_SIZE); - stencilSize = GetFBConfigAttrib(dpy, screen, config, GLX_STENCIL_SIZE); - accumRedSize = GetFBConfigAttrib(dpy, screen, config, GLX_ACCUM_RED_SIZE); - accumGreenSize = GetFBConfigAttrib(dpy, screen, config, GLX_ACCUM_GREEN_SIZE); - accumBlueSize = GetFBConfigAttrib(dpy, screen, config, GLX_ACCUM_BLUE_SIZE); - accumAlphaSize = GetFBConfigAttrib(dpy, screen, config, GLX_ACCUM_ALPHA_SIZE); - sampleBuffers = GetFBConfigAttrib(dpy, screen, config, GLX_SAMPLE_BUFFERS); - samples = GetFBConfigAttrib(dpy, screen, config, GLX_SAMPLES); - drawableType = GetFBConfigAttrib(dpy, screen, config, GLX_DRAWABLE_TYPE); - renderType = GetFBConfigAttrib(dpy, screen, config, GLX_RENDER_TYPE); - xRenderable = GetFBConfigAttrib(dpy, screen, config, GLX_X_RENDERABLE); - xVisual = GetFBConfigAttrib(dpy, screen, config, GLX_X_VISUAL_TYPE); - if (!xRenderable || !(drawableType & GLX_WINDOW_BIT_SGIX)) - xVisual = -1; - - id = GetFBConfigAttrib(dpy, screen, config, GLX_FBCONFIG_ID); - maxWidth = GetFBConfigAttrib(dpy, screen, config, GLX_MAX_PBUFFER_WIDTH); - maxHeight = GetFBConfigAttrib(dpy, screen, config, GLX_MAX_PBUFFER_HEIGHT); - maxPixels = GetFBConfigAttrib(dpy, screen, config, GLX_MAX_PBUFFER_PIXELS); -#if defined(GLX_SGIX_pbuffer) - optWidth = GetFBConfigAttrib(dpy, screen, config, GLX_OPTIMAL_PBUFFER_WIDTH_SGIX); - optHeight = GetFBConfigAttrib(dpy, screen, config, GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX); -#else - optWidth = optHeight = 0; -#endif -#if defined(GLX_NV_float_buffer) - floatComponents = GetFBConfigAttrib(dpy, screen, config, GLX_FLOAT_COMPONENTS_NV); -#endif - - /* See if we can create a pbuffer with this config */ - pBuffer = CreatePbuffer(dpy, screen, config, width, height, False, False); - - if (horizFormat) { - printf("0x%-9x ", id); - if (xVisual==GLX_STATIC_GRAY) printf("StaticGray "); - else if (xVisual==GLX_GRAY_SCALE) printf("GrayScale "); - else if (xVisual==GLX_STATIC_COLOR) printf("StaticColor "); - else if (xVisual==GLX_PSEUDO_COLOR) printf("PseudoColor "); - else if (xVisual==GLX_TRUE_COLOR) printf("TrueColor "); - else if (xVisual==GLX_DIRECT_COLOR) printf("DirectColor "); - else printf(" -none- "); - printf(" %3d %3d %s %s %s %2s ", bufferSize, level, - (renderType & GLX_RGBA_BIT_SGIX) ? "y" : ".", - (renderType & GLX_COLOR_INDEX_BIT_SGIX) ? "y" : ".", - doubleBuffer ? "y" : ".", - stereo ? "y" : "."); - printf("%2d %2d %2d %2d ", redSize, greenSize, blueSize, alphaSize); - printf("%2d %2d ", depthSize, stencilSize); - printf("%2d %2d %2d %2d", accumRedSize, accumGreenSize, accumBlueSize, - accumAlphaSize); - printf(" %2d %2d", sampleBuffers, samples); - printf(" %s %c", pBuffer ? "y" : ".", - ".y"[floatComponents]); - printf("\n"); - } - else { - printf("Id 0x%x\n", id); - printf(" Buffer Size: %d\n", bufferSize); - printf(" Level: %d\n", level); - printf(" Double Buffer: %s\n", doubleBuffer ? "yes" : "no"); - printf(" Stereo: %s\n", stereo ? "yes" : "no"); - printf(" Aux Buffers: %d\n", auxBuffers); - printf(" Red Size: %d\n", redSize); - printf(" Green Size: %d\n", greenSize); - printf(" Blue Size: %d\n", blueSize); - printf(" Alpha Size: %d\n", alphaSize); - printf(" Depth Size: %d\n", depthSize); - printf(" Stencil Size: %d\n", stencilSize); - printf(" Accum Red Size: %d\n", accumRedSize); - printf(" Accum Green Size: %d\n", accumGreenSize); - printf(" Accum Blue Size: %d\n", accumBlueSize); - printf(" Accum Alpha Size: %d\n", accumAlphaSize); - printf(" Sample Buffers: %d\n", sampleBuffers); - printf(" Samples/Pixel: %d\n", samples); - printf(" Drawable Types: "); - if (drawableType & GLX_WINDOW_BIT) printf("Window "); - if (drawableType & GLX_PIXMAP_BIT) printf("Pixmap "); - if (drawableType & GLX_PBUFFER_BIT) printf("PBuffer"); - printf("\n"); - printf(" Render Types: "); - if (renderType & GLX_RGBA_BIT_SGIX) printf("RGBA "); - if (renderType & GLX_COLOR_INDEX_BIT_SGIX) printf("CI "); - printf("\n"); - printf(" X Renderable: %s\n", xRenderable ? "yes" : "no"); - - printf(" Pbuffer: %s\n", pBuffer ? "yes" : "no"); - printf(" Max Pbuffer width: %d\n", maxWidth); - printf(" Max Pbuffer height: %d\n", maxHeight); - printf(" Max Pbuffer pixels: %d\n", maxPixels); - printf(" Optimum Pbuffer width: %d\n", optWidth); - printf(" Optimum Pbuffer height: %d\n", optHeight); - - printf(" Float Components: %s\n", floatComponents ? "yes" : "no"); - } - - if (pBuffer) { - DestroyPbuffer(dpy, screen, pBuffer); - } -} - - - -GLXContext -CreateContext(Display *dpy, int screen, FBCONFIG config) -{ - int fbcSupport = QueryFBConfig(dpy, screen); -#if defined(GLX_VERSION_1_3) - if (fbcSupport == 1) { - /* GLX 1.3 */ - GLXContext c; - c = glXCreateNewContext(dpy, config, GLX_RGBA_TYPE, NULL, True); - if (!c) { - /* try indirect */ - c = glXCreateNewContext(dpy, config, GLX_RGBA_TYPE, NULL, False); - } - return c; - } -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (fbcSupport == 2) { - GLXContext c; - c = glXCreateContextWithConfigSGIX(dpy, config, GLX_RGBA_TYPE_SGIX, NULL, True); - if (!c) { - c = glXCreateContextWithConfigSGIX(dpy, config, GLX_RGBA_TYPE_SGIX, NULL, False); - } - return c; - } -#endif - return 0; -} - - -void -DestroyContext(Display *dpy, GLXContext ctx) -{ - glXDestroyContext(dpy, ctx); -} - - -/* This is only used by CreatePbuffer() */ -static int XErrorFlag = 0; -static int HandleXError(Display *dpy, XErrorEvent *event) -{ - XErrorFlag = 1; - return 0; -} - - -/** - * Create a Pbuffer. Use an X error handler to deal with potential - * BadAlloc errors. - * - * Input: dpy - the X display - * fbConfig - an FBConfig as returned by glXChooseFBConfigSGIX(). - * width, height - size of pixel buffer to request, in pixels. - * pbAttribs - list of optional pixel buffer attributes - * Return: a Pbuffer or None. - */ -PBUFFER -CreatePbuffer(Display *dpy, int screen, FBCONFIG config, - int width, int height, Bool largest, Bool preserve) -{ - int (*oldHandler)(Display *, XErrorEvent *); - PBUFFER pBuffer = None; - int pbSupport = QueryPbuffers(dpy, screen); - - /* Catch X protocol errors with our own error handler */ - oldHandler = XSetErrorHandler(HandleXError); - XErrorFlag = 0; - -#if defined(GLX_VERSION_1_3) - if (pbSupport == 1) { - /* GLX 1.3 */ - int attribs[100], i = 0; - attribs[i++] = GLX_PBUFFER_WIDTH; - attribs[i++] = width; - attribs[i++] = GLX_PBUFFER_HEIGHT; - attribs[i++] = height; - attribs[i++] = GLX_PRESERVED_CONTENTS; - attribs[i++] = preserve; - attribs[i++] = GLX_LARGEST_PBUFFER; - attribs[i++] = largest; - attribs[i++] = 0; - pBuffer = glXCreatePbuffer(dpy, config, attribs); - } - else -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (pbSupport == 2) { - int attribs[100], i = 0; - attribs[i++] = GLX_PRESERVED_CONTENTS; - attribs[i++] = preserve; - attribs[i++] = GLX_LARGEST_PBUFFER; - attribs[i++] = largest; - attribs[i++] = 0; - pBuffer = glXCreateGLXPbufferSGIX(dpy, config, width, height, attribs); - } - else -#endif - { - pBuffer = None; - } - - XSync(dpy, False); - /* Restore original X error handler */ - (void) XSetErrorHandler(oldHandler); - - /* Return pbuffer (may be None) */ - if (!XErrorFlag && pBuffer != None) { - /*printf("config %d worked!\n", i);*/ - return pBuffer; - } - else { - return None; - } -} - - -void -DestroyPbuffer(Display *dpy, int screen, PBUFFER pbuffer) -{ - int pbSupport = QueryPbuffers(dpy, screen); -#if defined(GLX_VERSION_1_3) - if (pbSupport == 1) { - glXDestroyPbuffer(dpy, pbuffer); - return; - } -#endif -#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer) - if (pbSupport == 2) { - glXDestroyGLXPbufferSGIX(dpy, pbuffer); - return; - } -#endif -} |