+++ /dev/null
-
-/*
- * 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
-}
projects / mesa.git / blobdiff