--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+
+/**
+ * "Fake" GLX API implemented in terms of the XMesa*() functions.
+ */
+
+
+
+#define GLX_GLXEXT_PROTOTYPES
+#include "GL/glx.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xmd.h>
+#include <GL/glxproto.h>
+
+#include "xm_api.h"
+#include "main/errors.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+/* An "Atrribs/Attribs" typo was fixed in glxproto.h in Nov 2014.
+ * This is in case we don't have the updated header.
+ */
+#if !defined(X_GLXCreateContextAttribsARB) && \
+ defined(X_GLXCreateContextAtrribsARB)
+#define X_GLXCreateContextAttribsARB X_GLXCreateContextAtrribsARB
+#endif
+
+/* This indicates the client-side GLX API and GLX encoder version. */
+#define CLIENT_MAJOR_VERSION 1
+#define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
+
+/* This indicates the server-side GLX decoder version.
+ * GLX 1.4 indicates OpenGL 1.3 support
+ */
+#define SERVER_MAJOR_VERSION 1
+#define SERVER_MINOR_VERSION 4
+
+/* Who implemented this GLX? */
+#define VENDOR "Brian Paul"
+
+#define EXTENSIONS \
+ "GLX_MESA_copy_sub_buffer " \
+ "GLX_MESA_pixmap_colormap " \
+ "GLX_MESA_release_buffers " \
+ "GLX_ARB_create_context " \
+ "GLX_ARB_create_context_profile " \
+ "GLX_ARB_get_proc_address " \
+ "GLX_EXT_create_context_es_profile " \
+ "GLX_EXT_create_context_es2_profile " \
+ "GLX_EXT_texture_from_pixmap " \
+ "GLX_EXT_visual_info " \
+ "GLX_EXT_visual_rating " \
+ /*"GLX_SGI_video_sync "*/ \
+ "GLX_SGIX_fbconfig " \
+ "GLX_SGIX_pbuffer "
+
+#define DEFAULT_DIRECT GL_TRUE
+
+
+/** XXX this could be based on gallium's max texture size */
+#define PBUFFER_MAX_SIZE 16384
+
+
+/**
+ * The GLXContext typedef is defined as a pointer to this structure.
+ */
+struct __GLXcontextRec
+{
+ Display *currentDpy;
+ GLboolean isDirect;
+ GLXDrawable currentDrawable;
+ GLXDrawable currentReadable;
+ XID xid;
+
+ XMesaContext xmesaContext;
+};
+
+
+
+static pipe_tsd ContextTSD;
+
+/** Set current context for calling thread */
+static void
+SetCurrentContext(GLXContext c)
+{
+ pipe_tsd_set(&ContextTSD, c);
+}
+
+/** Get current context for calling thread */
+static GLXContext
+GetCurrentContext(void)
+{
+ return pipe_tsd_get(&ContextTSD);
+}
+
+
+
+/**********************************************************************/
+/*** GLX Visual Code ***/
+/**********************************************************************/
+
+#define DONT_CARE -1
+
+
+static XMesaVisual *VisualTable = NULL;
+static int NumVisuals = 0;
+
+
+
+/* Macro to handle c_class vs class field name in XVisualInfo struct */
+#if defined(__cplusplus) || defined(c_plusplus)
+#define CLASS c_class
+#else
+#define CLASS class
+#endif
+
+
+
+/*
+ * Test if the given XVisualInfo is usable for Mesa rendering.
+ */
+static GLboolean
+is_usable_visual( XVisualInfo *vinfo )
+{
+ switch (vinfo->CLASS) {
+ case StaticGray:
+ case GrayScale:
+ /* Any StaticGray/GrayScale visual works in RGB or CI mode */
+ return GL_TRUE;
+ case StaticColor:
+ case PseudoColor:
+ /* Any StaticColor/PseudoColor visual of at least 4 bits */
+ if (vinfo->depth>=4) {
+ return GL_TRUE;
+ }
+ else {
+ return GL_FALSE;
+ }
+ case TrueColor:
+ case DirectColor:
+ /* Any depth of TrueColor or DirectColor works in RGB mode */
+ return GL_TRUE;
+ default:
+ /* This should never happen */
+ return GL_FALSE;
+ }
+}
+
+
+/*
+ * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
+ * configuration in our list of GLX visuals.
+ */
+static XMesaVisual
+save_glx_visual( Display *dpy, XVisualInfo *vinfo,
+ GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
+ GLboolean stereoFlag,
+ GLint depth_size, GLint stencil_size,
+ GLint accumRedSize, GLint accumGreenSize,
+ GLint accumBlueSize, GLint accumAlphaSize,
+ GLint level, GLint numAuxBuffers, GLuint num_samples )
+{
+ GLboolean ximageFlag = GL_TRUE;
+ XMesaVisual xmvis;
+ GLint i;
+ GLboolean comparePointers;
+
+ if (!rgbFlag)
+ return NULL;
+
+ if (dbFlag) {
+ /* Check if the MESA_BACK_BUFFER env var is set */
+ char *backbuffer = getenv("MESA_BACK_BUFFER");
+ if (backbuffer) {
+ if (backbuffer[0]=='p' || backbuffer[0]=='P') {
+ ximageFlag = GL_FALSE;
+ }
+ else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
+ ximageFlag = GL_TRUE;
+ }
+ else {
+ _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
+ }
+ }
+ }
+
+ if (stereoFlag) {
+ /* stereo not supported */
+ return NULL;
+ }
+
+ if (stencil_size > 0 && depth_size > 0)
+ depth_size = 24;
+
+ /* Comparing IDs uses less memory but sometimes fails. */
+ /* XXX revisit this after 3.0 is finished. */
+ if (getenv("MESA_GLX_VISUAL_HACK"))
+ comparePointers = GL_TRUE;
+ else
+ comparePointers = GL_FALSE;
+
+ /* Force the visual to have an alpha channel */
+ if (rgbFlag && getenv("MESA_GLX_FORCE_ALPHA"))
+ alphaFlag = GL_TRUE;
+
+ /* First check if a matching visual is already in the list */
+ for (i=0; i<NumVisuals; i++) {
+ XMesaVisual v = VisualTable[i];
+ if (v->display == dpy
+ && v->mesa_visual.level == level
+ && v->mesa_visual.numAuxBuffers == numAuxBuffers
+ && v->mesa_visual.samples == num_samples
+ && v->ximage_flag == ximageFlag
+ && v->mesa_visual.doubleBufferMode == dbFlag
+ && v->mesa_visual.stereoMode == stereoFlag
+ && (v->mesa_visual.alphaBits > 0) == alphaFlag
+ && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
+ && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
+ && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
+ && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
+ && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
+ && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
+ /* now either compare XVisualInfo pointers or visual IDs */
+ if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
+ || (comparePointers && v->vishandle == vinfo)) {
+ return v;
+ }
+ }
+ }
+
+ /* Create a new visual and add it to the list. */
+
+ xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
+ stereoFlag, ximageFlag,
+ depth_size, stencil_size,
+ accumRedSize, accumBlueSize,
+ accumBlueSize, accumAlphaSize, num_samples, level,
+ GLX_NONE_EXT );
+ if (xmvis) {
+ /* Save a copy of the pointer now so we can find this visual again
+ * if we need to search for it in find_glx_visual().
+ */
+ xmvis->vishandle = vinfo;
+ /* Allocate more space for additional visual */
+ VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
+ /* add xmvis to the list */
+ VisualTable[NumVisuals] = xmvis;
+ NumVisuals++;
+ /* XXX minor hack, because XMesaCreateVisual doesn't support an
+ * aux buffers parameter.
+ */
+ xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
+ }
+ return xmvis;
+}
+
+
+/**
+ * Return the default number of bits for the Z buffer.
+ * If defined, use the MESA_GLX_DEPTH_BITS env var value.
+ * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
+ * XXX probably do the same thing for stencil, accum, etc.
+ */
+static GLint
+default_depth_bits(void)
+{
+ int zBits;
+ const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
+ if (zEnv)
+ zBits = atoi(zEnv);
+ else
+ zBits = 24;
+ return zBits;
+}
+
+static GLint
+default_alpha_bits(void)
+{
+ int aBits;
+ const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
+ if (aEnv)
+ aBits = atoi(aEnv);
+ else
+ aBits = 0;
+ return aBits;
+}
+
+static GLint
+default_accum_bits(void)
+{
+ return 16;
+}
+
+
+
+/*
+ * Create a GLX visual from a regular XVisualInfo.
+ * This is called when Fake GLX is given an XVisualInfo which wasn't
+ * returned by glXChooseVisual. Since this is the first time we're
+ * considering this visual we'll take a guess at reasonable values
+ * for depth buffer size, stencil size, accum size, etc.
+ * This is the best we can do with a client-side emulation of GLX.
+ */
+static XMesaVisual
+create_glx_visual( Display *dpy, XVisualInfo *visinfo )
+{
+ GLint zBits = default_depth_bits();
+ GLint accBits = default_accum_bits();
+ GLboolean alphaFlag = default_alpha_bits() > 0;
+
+ if (is_usable_visual( visinfo )) {
+ /* Configure this visual as RGB, double-buffered, depth-buffered. */
+ /* This is surely wrong for some people's needs but what else */
+ /* can be done? They should use glXChooseVisual(). */
+ return save_glx_visual( dpy, visinfo,
+ GL_TRUE, /* rgb */
+ alphaFlag, /* alpha */
+ GL_TRUE, /* double */
+ GL_FALSE, /* stereo */
+ zBits,
+ 8, /* stencil bits */
+ accBits, /* r */
+ accBits, /* g */
+ accBits, /* b */
+ accBits, /* a */
+ 0, /* level */
+ 0, /* numAux */
+ 0 /* numSamples */
+ );
+ }
+ else {
+ _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
+ return NULL;
+ }
+}
+
+
+
+/*
+ * Find the GLX visual associated with an XVisualInfo.
+ */
+static XMesaVisual
+find_glx_visual( Display *dpy, XVisualInfo *vinfo )
+{
+ int i;
+
+ /* try to match visual id */
+ for (i=0;i<NumVisuals;i++) {
+ if (VisualTable[i]->display==dpy
+ && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
+ return VisualTable[i];
+ }
+ }
+
+ /* if that fails, try to match pointers */
+ for (i=0;i<NumVisuals;i++) {
+ if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
+ return VisualTable[i];
+ }
+ }
+
+ return NULL;
+}
+
+
+/**
+ * Try to get an X visual which matches the given arguments.
+ */
+static XVisualInfo *
+get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
+{
+ XVisualInfo temp, *vis;
+ long mask;
+ int n;
+ unsigned int default_depth;
+ int default_class;
+
+ mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
+ temp.screen = scr;
+ temp.depth = depth;
+ temp.CLASS = xclass;
+
+ default_depth = DefaultDepth(dpy,scr);
+ default_class = DefaultVisual(dpy,scr)->CLASS;
+
+ if (depth==default_depth && xclass==default_class) {
+ /* try to get root window's visual */
+ temp.visualid = DefaultVisual(dpy,scr)->visualid;
+ mask |= VisualIDMask;
+ }
+
+ vis = XGetVisualInfo( dpy, mask, &temp, &n );
+
+ /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
+ * An SGI Infinite Reality system, for example, can have 30bpp pixels:
+ * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
+ */
+ if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
+ if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
+ util_bitcount((GLuint) vis->green_mask) <= 8 &&
+ util_bitcount((GLuint) vis->blue_mask ) <= 8) {
+ return vis;
+ }
+ else {
+ free((void *) vis);
+ return NULL;
+ }
+ }
+
+ return vis;
+}
+
+
+/*
+ * Retrieve the value of the given environment variable and find
+ * the X visual which matches it.
+ * Input: dpy - the display
+ * screen - the screen number
+ * varname - the name of the environment variable
+ * Return: an XVisualInfo pointer to NULL if error.
+ */
+static XVisualInfo *
+get_env_visual(Display *dpy, int scr, const char *varname)
+{
+ char value[100], type[100];
+ int depth, xclass = -1;
+ XVisualInfo *vis;
+
+ if (!getenv( varname )) {
+ return NULL;
+ }
+
+ strncpy( value, getenv(varname), 100 );
+ value[99] = 0;
+
+ sscanf( value, "%s %d", type, &depth );
+
+ if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
+ else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
+ else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
+ else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
+ else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
+ else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
+
+ if (xclass>-1 && depth>0) {
+ vis = get_visual( dpy, scr, depth, xclass );
+ if (vis) {
+ return vis;
+ }
+ }
+
+ _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
+ type, depth);
+
+ return NULL;
+}
+
+
+
+/*
+ * Select an X visual which satisfies the RGBA flag and minimum depth.
+ * Input: dpy,
+ * screen - X display and screen number
+ * min_depth - minimum visual depth
+ * preferred_class - preferred GLX visual class or DONT_CARE
+ * Return: pointer to an XVisualInfo or NULL.
+ */
+static XVisualInfo *
+choose_x_visual( Display *dpy, int screen, int min_depth,
+ int preferred_class )
+{
+ XVisualInfo *vis;
+ int xclass, visclass = 0;
+ int depth;
+
+ /* First see if the MESA_RGB_VISUAL env var is defined */
+ vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
+ if (vis) {
+ return vis;
+ }
+ /* Otherwise, search for a suitable visual */
+ if (preferred_class==DONT_CARE) {
+ for (xclass=0;xclass<6;xclass++) {
+ switch (xclass) {
+ case 0: visclass = TrueColor; break;
+ case 1: visclass = DirectColor; break;
+ case 2: visclass = PseudoColor; break;
+ case 3: visclass = StaticColor; break;
+ case 4: visclass = GrayScale; break;
+ case 5: visclass = StaticGray; break;
+ }
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ }
+ }
+ else {
+ /* search for a specific visual class */
+ switch (preferred_class) {
+ case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
+ case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
+ case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
+ case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
+ case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
+ case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
+ default: return NULL;
+ }
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ }
+
+ /* didn't find a visual */
+ return NULL;
+}
+
+
+
+
+/**********************************************************************/
+/*** Display-related functions ***/
+/**********************************************************************/
+
+
+/**
+ * Free all XMesaVisuals which are associated with the given display.
+ */
+static void
+destroy_visuals_on_display(Display *dpy)
+{
+ int i;
+ for (i = 0; i < NumVisuals; i++) {
+ if (VisualTable[i]->display == dpy) {
+ /* remove this visual */
+ int j;
+ free(VisualTable[i]);
+ for (j = i; j < NumVisuals - 1; j++)
+ VisualTable[j] = VisualTable[j + 1];
+ NumVisuals--;
+ }
+ }
+}
+
+
+/**
+ * Called from XCloseDisplay() to let us free our display-related data.
+ */
+static int
+close_display_callback(Display *dpy, XExtCodes *codes)
+{
+ xmesa_destroy_buffers_on_display(dpy);
+ destroy_visuals_on_display(dpy);
+ xmesa_close_display(dpy);
+ return 0;
+}
+
+
+/**
+ * Look for the named extension on given display and return a pointer
+ * to the _XExtension data, or NULL if extension not found.
+ */
+static _XExtension *
+lookup_extension(Display *dpy, const char *extName)
+{
+ _XExtension *ext;
+ for (ext = dpy->ext_procs; ext; ext = ext->next) {
+ if (ext->name && strcmp(ext->name, extName) == 0) {
+ return ext;
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * Whenever we're given a new Display pointer, call this function to
+ * register our close_display_callback function.
+ */
+static void
+register_with_display(Display *dpy)
+{
+ const char *extName = "MesaGLX";
+ _XExtension *ext;
+
+ ext = lookup_extension(dpy, extName);
+ if (!ext) {
+ XExtCodes *c = XAddExtension(dpy);
+ ext = dpy->ext_procs; /* new extension is at head of list */
+ assert(c->extension == ext->codes.extension);
+ (void) c;
+ ext->name = strdup(extName);
+ ext->close_display = close_display_callback;
+ }
+}
+
+
+/**
+ * Fake an error.
+ */
+static int
+generate_error(Display *dpy,
+ unsigned char error_code,
+ XID resourceid,
+ unsigned char minor_code,
+ Bool core)
+{
+ XErrorHandler handler;
+ int major_opcode;
+ int first_event;
+ int first_error;
+ XEvent event;
+
+ handler = XSetErrorHandler(NULL);
+ XSetErrorHandler(handler);
+ if (!handler) {
+ return 0;
+ }
+
+ if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_opcode, &first_event, &first_error)) {
+ major_opcode = 0;
+ first_event = 0;
+ first_error = 0;
+ }
+
+ if (!core) {
+ error_code += first_error;
+ }
+
+ memset(&event, 0, sizeof event);
+
+ event.xerror.type = X_Error;
+ event.xerror.display = dpy;
+ event.xerror.resourceid = resourceid;
+ event.xerror.serial = NextRequest(dpy) - 1;
+ event.xerror.error_code = error_code;
+ event.xerror.request_code = major_opcode;
+ event.xerror.minor_code = minor_code;
+
+ return handler(dpy, &event.xerror);
+}
+
+
+/**********************************************************************/
+/*** Begin Fake GLX API Functions ***/
+/**********************************************************************/
+
+
+/**
+ * Helper used by glXChooseVisual and glXChooseFBConfig.
+ * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
+ * the later.
+ * In either case, the attribute list is terminated with the value 'None'.
+ */
+static XMesaVisual
+choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
+{
+ const GLboolean rgbModeDefault = fbConfig;
+ const int *parselist;
+ XVisualInfo *vis;
+ int min_red=0, min_green=0, min_blue=0;
+ GLboolean rgb_flag = rgbModeDefault;
+ GLboolean alpha_flag = GL_FALSE;
+ GLboolean double_flag = GL_FALSE;
+ GLboolean stereo_flag = GL_FALSE;
+ GLint depth_size = 0;
+ GLint stencil_size = 0;
+ GLint accumRedSize = 0;
+ GLint accumGreenSize = 0;
+ GLint accumBlueSize = 0;
+ GLint accumAlphaSize = 0;
+ int level = 0;
+ int visual_type = DONT_CARE;
+ GLint caveat = DONT_CARE;
+ XMesaVisual xmvis = NULL;
+ int desiredVisualID = -1;
+ int numAux = 0;
+ GLint num_samples = 0;
+
+ if (xmesa_init( dpy ) != 0) {
+ _mesa_warning(NULL, "Failed to initialize display");
+ return NULL;
+ }
+
+ parselist = list;
+
+ while (*parselist) {
+
+ if (fbConfig &&
+ parselist[1] == GLX_DONT_CARE &&
+ parselist[0] != GLX_LEVEL) {
+ /* For glXChooseFBConfig(), skip attributes whose value is
+ * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be
+ * a negative value).
+ *
+ * From page 17 (23 of the pdf) of the GLX 1.4 spec:
+ * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
+ */
+ parselist += 2;
+ continue;
+ }
+
+ switch (*parselist) {
+ case GLX_USE_GL:
+ if (fbConfig) {
+ /* invalid token */
+ return NULL;
+ }
+ else {
+ /* skip */
+ parselist++;
+ }
+ break;
+ case GLX_BUFFER_SIZE:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_LEVEL:
+ parselist++;
+ level = *parselist++;
+ break;
+ case GLX_RGBA:
+ if (fbConfig) {
+ /* invalid token */
+ return NULL;
+ }
+ else {
+ rgb_flag = GL_TRUE;
+ parselist++;
+ }
+ break;
+ case GLX_DOUBLEBUFFER:
+ parselist++;
+ if (fbConfig) {
+ double_flag = *parselist++;
+ }
+ else {
+ double_flag = GL_TRUE;
+ }
+ break;
+ case GLX_STEREO:
+ parselist++;
+ if (fbConfig) {
+ stereo_flag = *parselist++;
+ }
+ else {
+ stereo_flag = GL_TRUE;
+ }
+ break;
+ case GLX_AUX_BUFFERS:
+ parselist++;
+ numAux = *parselist++;
+ if (numAux > MAX_AUX_BUFFERS)
+ return NULL;
+ break;
+ case GLX_RED_SIZE:
+ parselist++;
+ min_red = *parselist++;
+ break;
+ case GLX_GREEN_SIZE:
+ parselist++;
+ min_green = *parselist++;
+ break;
+ case GLX_BLUE_SIZE:
+ parselist++;
+ min_blue = *parselist++;
+ break;
+ case GLX_ALPHA_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ alpha_flag = size ? GL_TRUE : GL_FALSE;
+ }
+ break;
+ case GLX_DEPTH_SIZE:
+ parselist++;
+ depth_size = *parselist++;
+ break;
+ case GLX_STENCIL_SIZE:
+ parselist++;
+ stencil_size = *parselist++;
+ break;
+ case GLX_ACCUM_RED_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumRedSize = MAX2( accumRedSize, size );
+ }
+ break;
+ case GLX_ACCUM_GREEN_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumGreenSize = MAX2( accumGreenSize, size );
+ }
+ break;
+ case GLX_ACCUM_BLUE_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumBlueSize = MAX2( accumBlueSize, size );
+ }
+ break;
+ case GLX_ACCUM_ALPHA_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumAlphaSize = MAX2( accumAlphaSize, size );
+ }
+ break;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_X_VISUAL_TYPE_EXT:
+ parselist++;
+ visual_type = *parselist++;
+ break;
+ case GLX_TRANSPARENT_TYPE_EXT:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_TRANSPARENT_INDEX_VALUE_EXT:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_TRANSPARENT_RED_VALUE_EXT:
+ case GLX_TRANSPARENT_GREEN_VALUE_EXT:
+ case GLX_TRANSPARENT_BLUE_VALUE_EXT:
+ case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
+ /* ignore */
+ parselist++;
+ parselist++;
+ break;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_VISUAL_CAVEAT_EXT:
+ parselist++;
+ caveat = *parselist++; /* ignored for now */
+ break;
+
+ /*
+ * GLX_ARB_multisample
+ */
+ case GLX_SAMPLE_BUFFERS_ARB:
+ /* ignore */
+ parselist++;
+ parselist++;
+ break;
+ case GLX_SAMPLES_ARB:
+ parselist++;
+ num_samples = *parselist++;
+ break;
+
+ /*
+ * FBConfig attribs.
+ */
+ case GLX_RENDER_TYPE:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ if (*parselist & GLX_RGBA_BIT) {
+ rgb_flag = GL_TRUE;
+ }
+ else if (*parselist & GLX_COLOR_INDEX_BIT) {
+ rgb_flag = GL_FALSE;
+ }
+ else if (*parselist == 0) {
+ rgb_flag = GL_TRUE;
+ }
+ parselist++;
+ break;
+ case GLX_DRAWABLE_TYPE:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
+ return NULL; /* bad bit */
+ }
+ parselist++;
+ break;
+ case GLX_FBCONFIG_ID:
+ case GLX_VISUAL_ID:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ desiredVisualID = *parselist++;
+ break;
+ case GLX_X_RENDERABLE:
+ case GLX_MAX_PBUFFER_WIDTH:
+ case GLX_MAX_PBUFFER_HEIGHT:
+ case GLX_MAX_PBUFFER_PIXELS:
+ if (!fbConfig)
+ return NULL; /* invalid config option */
+ parselist += 2; /* ignore the parameter */
+ break;
+
+ case GLX_BIND_TO_TEXTURE_RGB_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_TEXTURE_RGBA_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
+ parselist++;
+ if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
+ GLX_TEXTURE_2D_BIT_EXT |
+ GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
+ /* invalid bit */
+ return NULL;
+ }
+ break;
+ case GLX_Y_INVERTED_EXT:
+ parselist++; /*skip*/
+ break;
+
+ case None:
+ /* end of list */
+ break;
+
+ default:
+ /* undefined attribute */
+ _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
+ *parselist);
+ return NULL;
+ }
+ }
+
+ (void) caveat;
+
+ if (num_samples < 0) {
+ _mesa_warning(NULL, "GLX_SAMPLES_ARB: number of samples must not be negative");
+ return NULL;
+ }
+
+ /*
+ * Since we're only simulating the GLX extension this function will never
+ * find any real GL visuals. Instead, all we can do is try to find an RGB
+ * or CI visual of appropriate depth. Other requested attributes such as
+ * double buffering, depth buffer, etc. will be associated with the X
+ * visual and stored in the VisualTable[].
+ */
+ if (desiredVisualID != -1) {
+ /* try to get a specific visual, by visualID */
+ XVisualInfo temp;
+ int n;
+ temp.visualid = desiredVisualID;
+ temp.screen = screen;
+ vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
+ if (vis) {
+ /* give the visual some useful GLX attributes */
+ double_flag = GL_TRUE;
+ rgb_flag = GL_TRUE;
+ }
+ }
+ else if (level==0) {
+ /* normal color planes */
+ /* Get an RGB visual */
+ int min_rgb = min_red + min_green + min_blue;
+ if (min_rgb>1 && min_rgb<8) {
+ /* a special case to be sure we can get a monochrome visual */
+ min_rgb = 1;
+ }
+ vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
+ }
+ else {
+ _mesa_warning(NULL, "overlay not supported");
+ return NULL;
+ }
+
+ if (vis) {
+ /* Note: we're not exactly obeying the glXChooseVisual rules here.
+ * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
+ * largest depth buffer size, which is 32bits/value. Instead, we
+ * return 16 to maintain performance with earlier versions of Mesa.
+ */
+ if (stencil_size > 0)
+ depth_size = 24; /* if Z and stencil, always use 24+8 format */
+ else if (depth_size > 24)
+ depth_size = 32;
+ else if (depth_size > 16)
+ depth_size = 24;
+ else if (depth_size > 0) {
+ depth_size = default_depth_bits();
+ }
+
+ if (!alpha_flag) {
+ alpha_flag = default_alpha_bits() > 0;
+ }
+
+ /* we only support one size of stencil and accum buffers. */
+ if (stencil_size > 0)
+ stencil_size = 8;
+
+ if (accumRedSize > 0 ||
+ accumGreenSize > 0 ||
+ accumBlueSize > 0 ||
+ accumAlphaSize > 0) {
+
+ accumRedSize =
+ accumGreenSize =
+ accumBlueSize = default_accum_bits();
+
+ accumAlphaSize = alpha_flag ? accumRedSize : 0;
+ }
+
+ xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
+ stereo_flag, depth_size, stencil_size,
+ accumRedSize, accumGreenSize,
+ accumBlueSize, accumAlphaSize, level, numAux,
+ num_samples );
+ }
+
+ return xmvis;
+}
+
+
+PUBLIC XVisualInfo *
+glXChooseVisual( Display *dpy, int screen, int *list )
+{
+ XMesaVisual xmvis;
+
+ /* register ourselves as an extension on this display */
+ register_with_display(dpy);
+
+ xmvis = choose_visual(dpy, screen, list, GL_FALSE);
+ if (xmvis) {
+ /* create a new vishandle - the cached one may be stale */
+ xmvis->vishandle = malloc(sizeof(XVisualInfo));
+ if (xmvis->vishandle) {
+ memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
+ }
+ return xmvis->vishandle;
+ }
+ else
+ return NULL;
+}
+
+
+/**
+ * Helper function used by other glXCreateContext functions.
+ */
+static GLXContext
+create_context(Display *dpy, XMesaVisual xmvis,
+ XMesaContext shareCtx, Bool direct,
+ unsigned major, unsigned minor,
+ unsigned profileMask, unsigned contextFlags)
+{
+ GLXContext glxCtx;
+
+ if (!dpy || !xmvis)
+ return 0;
+
+ glxCtx = CALLOC_STRUCT(__GLXcontextRec);
+ if (!glxCtx)
+ return 0;
+
+ /* deallocate unused windows/buffers */
+#if 0
+ XMesaGarbageCollect();
+#endif
+
+ glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor,
+ profileMask, contextFlags);
+ if (!glxCtx->xmesaContext) {
+ free(glxCtx);
+ return NULL;
+ }
+
+ glxCtx->isDirect = DEFAULT_DIRECT;
+ glxCtx->currentDpy = dpy;
+ glxCtx->xid = (XID) glxCtx; /* self pointer */
+
+ return glxCtx;
+}
+
+
+PUBLIC GLXContext
+glXCreateContext( Display *dpy, XVisualInfo *visinfo,
+ GLXContext shareCtx, Bool direct )
+{
+ XMesaVisual xmvis;
+
+ xmvis = find_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* This visual wasn't found with glXChooseVisual() */
+ xmvis = create_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* unusable visual */
+ return NULL;
+ }
+ }
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+/* GLX 1.3 and later */
+PUBLIC Bool
+glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
+ GLXDrawable read, GLXContext ctx )
+{
+ GLXContext glxCtx = ctx;
+ GLXContext current = GetCurrentContext();
+ static boolean firsttime = 1, no_rast = 0;
+
+ if (firsttime) {
+ no_rast = getenv("SP_NO_RAST") != NULL;
+ firsttime = 0;
+ }
+
+ if (ctx) {
+ XMesaBuffer drawBuffer = NULL, readBuffer = NULL;
+ XMesaContext xmctx = glxCtx->xmesaContext;
+
+ /* either both must be null, or both must be non-null */
+ if (!draw != !read)
+ return False;
+
+ if (draw) {
+ /* Find the XMesaBuffer which corresponds to 'draw' */
+ drawBuffer = XMesaFindBuffer( dpy, draw );
+ if (!drawBuffer) {
+ /* drawable must be a new window! */
+ drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
+ if (!drawBuffer) {
+ /* Out of memory, or context/drawable depth mismatch */
+ return False;
+ }
+ }
+ }
+
+ if (read) {
+ /* Find the XMesaBuffer which corresponds to 'read' */
+ readBuffer = XMesaFindBuffer( dpy, read );
+ if (!readBuffer) {
+ /* drawable must be a new window! */
+ readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
+ if (!readBuffer) {
+ /* Out of memory, or context/drawable depth mismatch */
+ return False;
+ }
+ }
+ }
+
+ if (no_rast && current == ctx)
+ return True;
+
+ /* Now make current! */
+ if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
+ ctx->currentDpy = dpy;
+ ctx->currentDrawable = draw;
+ ctx->currentReadable = read;
+ SetCurrentContext(ctx);
+ return True;
+ }
+ else {
+ return False;
+ }
+ }
+ else if (!ctx && !draw && !read) {
+ /* release current context w/out assigning new one. */
+ XMesaMakeCurrent2( NULL, NULL, NULL );
+ SetCurrentContext(NULL);
+ return True;
+ }
+ else {
+ /* We were given an invalid set of arguments */
+ return False;
+ }
+}
+
+
+PUBLIC Bool
+glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
+{
+ return glXMakeContextCurrent( dpy, drawable, drawable, ctx );
+}
+
+
+PUBLIC GLXContext
+glXGetCurrentContext(void)
+{
+ return GetCurrentContext();
+}
+
+
+PUBLIC Display *
+glXGetCurrentDisplay(void)
+{
+ GLXContext glxCtx = glXGetCurrentContext();
+
+ return glxCtx ? glxCtx->currentDpy : NULL;
+}
+
+
+PUBLIC Display *
+glXGetCurrentDisplayEXT(void)
+{
+ return glXGetCurrentDisplay();
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentDrawable(void)
+{
+ GLXContext gc = glXGetCurrentContext();
+ return gc ? gc->currentDrawable : 0;
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentReadDrawable(void)
+{
+ GLXContext gc = glXGetCurrentContext();
+ return gc ? gc->currentReadable : 0;
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentReadDrawableSGI(void)
+{
+ return glXGetCurrentReadDrawable();
+}
+
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
+{
+ XMesaVisual v;
+ XMesaBuffer b;
+
+ v = find_glx_visual( dpy, visinfo );
+ if (!v) {
+ v = create_glx_visual( dpy, visinfo );
+ if (!v) {
+ /* unusable visual */
+ return 0;
+ }
+ }
+
+ b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
+ if (!b) {
+ return 0;
+ }
+ return b->ws.drawable;
+}
+
+
+/*** GLX_MESA_pixmap_colormap ***/
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
+ Pixmap pixmap, Colormap cmap )
+{
+ XMesaVisual v;
+ XMesaBuffer b;
+
+ v = find_glx_visual( dpy, visinfo );
+ if (!v) {
+ v = create_glx_visual( dpy, visinfo );
+ if (!v) {
+ /* unusable visual */
+ return 0;
+ }
+ }
+
+ b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
+ if (!b) {
+ return 0;
+ }
+ return b->ws.drawable;
+}
+
+
+PUBLIC void
+glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
+ }
+}
+
+
+PUBLIC void
+glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
+ unsigned long mask )
+{
+ XMesaContext xm_src = src->xmesaContext;
+ XMesaContext xm_dst = dst->xmesaContext;
+ (void) dpy;
+ if (GetCurrentContext() == src) {
+ glFlush();
+ }
+ XMesaCopyContext(xm_src, xm_dst, mask);
+}
+
+
+PUBLIC Bool
+glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
+{
+ int op, ev, err;
+ /* Mesa's GLX isn't really an X extension but we try to act like one. */
+ if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
+ ev = err = 0;
+ if (errorBase)
+ *errorBase = err;
+ if (eventBase)
+ *eventBase = ev;
+ return True; /* we're faking GLX so always return success */
+}
+
+
+PUBLIC void
+glXDestroyContext( Display *dpy, GLXContext ctx )
+{
+ if (ctx) {
+ GLXContext glxCtx = ctx;
+ (void) dpy;
+ XMesaDestroyContext( glxCtx->xmesaContext );
+ XMesaGarbageCollect();
+ free(glxCtx);
+ }
+}
+
+
+PUBLIC Bool
+glXIsDirect( Display *dpy, GLXContext ctx )
+{
+ return ctx ? ctx->isDirect : False;
+}
+
+
+
+PUBLIC void
+glXSwapBuffers( Display *dpy, GLXDrawable drawable )
+{
+ XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
+ static boolean firsttime = 1, no_rast = 0;
+
+ if (firsttime) {
+ no_rast = getenv("SP_NO_RAST") != NULL;
+ firsttime = 0;
+ }
+
+ if (no_rast)
+ return;
+
+ if (buffer) {
+ XMesaSwapBuffers(buffer);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
+ (int) drawable);
+ }
+}
+
+
+
+/*** GLX_MESA_copy_sub_buffer ***/
+
+PUBLIC void
+glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
+ int x, int y, int width, int height)
+{
+ XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
+ if (buffer) {
+ XMesaCopySubBuffer(buffer, x, y, width, height);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
+ }
+}
+
+
+PUBLIC Bool
+glXQueryVersion( Display *dpy, int *maj, int *min )
+{
+ (void) dpy;
+ /* Return GLX version, not Mesa version */
+ assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
+ *maj = CLIENT_MAJOR_VERSION;
+ *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
+ return True;
+}
+
+
+/*
+ * Query the GLX attributes of the given XVisualInfo.
+ */
+static int
+get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
+{
+ assert(xmvis);
+ switch(attrib) {
+ case GLX_USE_GL:
+ if (fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = (int) True;
+ return 0;
+ case GLX_BUFFER_SIZE:
+ *value = xmvis->visinfo->depth;
+ return 0;
+ case GLX_LEVEL:
+ *value = xmvis->mesa_visual.level;
+ return 0;
+ case GLX_RGBA:
+ if (fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = True;
+ return 0;
+ case GLX_DOUBLEBUFFER:
+ *value = (int) xmvis->mesa_visual.doubleBufferMode;
+ return 0;
+ case GLX_STEREO:
+ *value = (int) xmvis->mesa_visual.stereoMode;
+ return 0;
+ case GLX_AUX_BUFFERS:
+ *value = xmvis->mesa_visual.numAuxBuffers;
+ return 0;
+ case GLX_RED_SIZE:
+ *value = xmvis->mesa_visual.redBits;
+ return 0;
+ case GLX_GREEN_SIZE:
+ *value = xmvis->mesa_visual.greenBits;
+ return 0;
+ case GLX_BLUE_SIZE:
+ *value = xmvis->mesa_visual.blueBits;
+ return 0;
+ case GLX_ALPHA_SIZE:
+ *value = xmvis->mesa_visual.alphaBits;
+ return 0;
+ case GLX_DEPTH_SIZE:
+ *value = xmvis->mesa_visual.depthBits;
+ return 0;
+ case GLX_STENCIL_SIZE:
+ *value = xmvis->mesa_visual.stencilBits;
+ return 0;
+ case GLX_ACCUM_RED_SIZE:
+ *value = xmvis->mesa_visual.accumRedBits;
+ return 0;
+ case GLX_ACCUM_GREEN_SIZE:
+ *value = xmvis->mesa_visual.accumGreenBits;
+ return 0;
+ case GLX_ACCUM_BLUE_SIZE:
+ *value = xmvis->mesa_visual.accumBlueBits;
+ return 0;
+ case GLX_ACCUM_ALPHA_SIZE:
+ *value = xmvis->mesa_visual.accumAlphaBits;
+ return 0;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_X_VISUAL_TYPE_EXT:
+ switch (xmvis->visinfo->CLASS) {
+ case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
+ case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
+ case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
+ case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
+ case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
+ case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
+ }
+ return 0;
+ case GLX_TRANSPARENT_TYPE_EXT:
+ /* normal planes */
+ *value = GLX_NONE_EXT;
+ return 0;
+ case GLX_TRANSPARENT_INDEX_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_RED_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_GREEN_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_BLUE_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
+ /* undefined */
+ return 0;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_VISUAL_CAVEAT_EXT:
+ /* test for zero, just in case */
+ if (xmvis->mesa_visual.visualRating > 0)
+ *value = xmvis->mesa_visual.visualRating;
+ else
+ *value = GLX_NONE_EXT;
+ return 0;
+
+ /*
+ * GLX_ARB_multisample
+ */
+ case GLX_SAMPLE_BUFFERS_ARB:
+ *value = xmvis->mesa_visual.sampleBuffers;
+ return 0;
+ case GLX_SAMPLES_ARB:
+ *value = xmvis->mesa_visual.samples;
+ return 0;
+
+ /*
+ * For FBConfigs:
+ */
+ case GLX_SCREEN_EXT:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->screen;
+ break;
+ case GLX_DRAWABLE_TYPE: /*SGIX too */
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
+ break;
+ case GLX_RENDER_TYPE_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = GLX_RGBA_BIT;
+ break;
+ case GLX_X_RENDERABLE_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = True; /* XXX really? */
+ break;
+ case GLX_FBCONFIG_ID_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->visualid;
+ break;
+ case GLX_MAX_PBUFFER_WIDTH:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ /* XXX should be same as ctx->Const.MaxRenderbufferSize */
+ *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_MAX_PBUFFER_HEIGHT:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_MAX_PBUFFER_PIXELS:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
+ DisplayHeight(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_VISUAL_ID:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->visualid;
+ break;
+
+ case GLX_BIND_TO_TEXTURE_RGB_EXT:
+ *value = True; /*XXX*/
+ break;
+ case GLX_BIND_TO_TEXTURE_RGBA_EXT:
+ /* XXX review */
+ *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
+ break;
+ case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
+ *value = True; /*XXX*/
+ break;
+ case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
+ *value = (GLX_TEXTURE_1D_BIT_EXT |
+ GLX_TEXTURE_2D_BIT_EXT |
+ GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
+ break;
+ case GLX_Y_INVERTED_EXT:
+ *value = True; /*XXX*/
+ break;
+
+ default:
+ return GLX_BAD_ATTRIBUTE;
+ }
+ return Success;
+}
+
+
+PUBLIC int
+glXGetConfig( Display *dpy, XVisualInfo *visinfo,
+ int attrib, int *value )
+{
+ XMesaVisual xmvis;
+ int k;
+ if (!dpy || !visinfo)
+ return GLX_BAD_ATTRIBUTE;
+
+ xmvis = find_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* this visual wasn't obtained with glXChooseVisual */
+ xmvis = create_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* this visual can't be used for GL rendering */
+ if (attrib==GLX_USE_GL) {
+ *value = (int) False;
+ return 0;
+ }
+ else {
+ return GLX_BAD_VISUAL;
+ }
+ }
+ }
+
+ k = get_config(xmvis, attrib, value, GL_FALSE);
+ return k;
+}
+
+
+PUBLIC void
+glXWaitGL( void )
+{
+ XMesaContext xmesa = XMesaGetCurrentContext();
+ XMesaFlush( xmesa );
+}
+
+
+
+PUBLIC void
+glXWaitX( void )
+{
+ XMesaContext xmesa = XMesaGetCurrentContext();
+ XMesaFlush( xmesa );
+}
+
+
+static const char *
+get_extensions( void )
+{
+ return EXTENSIONS;
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXQueryExtensionsString( Display *dpy, int screen )
+{
+ (void) dpy;
+ (void) screen;
+ return get_extensions();
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXQueryServerString( Display *dpy, int screen, int name )
+{
+ static char version[1000];
+ sprintf(version, "%d.%d %s",
+ SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name());
+
+ (void) dpy;
+ (void) screen;
+
+ switch (name) {
+ case GLX_EXTENSIONS:
+ return get_extensions();
+ case GLX_VENDOR:
+ return VENDOR;
+ case GLX_VERSION:
+ return version;
+ default:
+ return NULL;
+ }
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXGetClientString( Display *dpy, int name )
+{
+ static char version[1000];
+ sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
+ CLIENT_MINOR_VERSION, xmesa_get_name());
+
+ (void) dpy;
+
+ switch (name) {
+ case GLX_EXTENSIONS:
+ return get_extensions();
+ case GLX_VENDOR:
+ return VENDOR;
+ case GLX_VERSION:
+ return version;
+ default:
+ return NULL;
+ }
+}
+
+
+
+/*
+ * GLX 1.3 and later
+ */
+
+
+PUBLIC int
+glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
+ int attribute, int *value)
+{
+ XMesaVisual v = (XMesaVisual) config;
+ (void) dpy;
+ (void) config;
+
+ if (!dpy || !config || !value)
+ return -1;
+
+ return get_config(v, attribute, value, GL_TRUE);
+}
+
+
+PUBLIC GLXFBConfig *
+glXGetFBConfigs( Display *dpy, int screen, int *nelements )
+{
+ XVisualInfo *visuals, visTemplate;
+ const long visMask = VisualScreenMask;
+ int i;
+
+ /* Get list of all X visuals */
+ visTemplate.screen = screen;
+ visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
+ if (*nelements > 0) {
+ XMesaVisual *results = malloc(*nelements * sizeof(XMesaVisual));
+ if (!results) {
+ *nelements = 0;
+ return NULL;
+ }
+ for (i = 0; i < *nelements; i++) {
+ results[i] = create_glx_visual(dpy, visuals + i);
+ if (!results[i]) {
+ *nelements = i;
+ break;
+ }
+ }
+ return (GLXFBConfig *) results;
+ }
+ return NULL;
+}
+
+
+PUBLIC GLXFBConfig *
+glXChooseFBConfig(Display *dpy, int screen,
+ const int *attribList, int *nitems)
+{
+ XMesaVisual xmvis;
+
+ /* register ourselves as an extension on this display */
+ register_with_display(dpy);
+
+ if (!attribList || !attribList[0]) {
+ /* return list of all configs (per GLX_SGIX_fbconfig spec) */
+ return glXGetFBConfigs(dpy, screen, nitems);
+ }
+
+ xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
+ if (xmvis) {
+ GLXFBConfig *config = malloc(sizeof(XMesaVisual));
+ if (!config) {
+ *nitems = 0;
+ return NULL;
+ }
+ *nitems = 1;
+ config[0] = (GLXFBConfig) xmvis;
+ return (GLXFBConfig *) config;
+ }
+ else {
+ *nitems = 0;
+ return NULL;
+ }
+}
+
+
+PUBLIC XVisualInfo *
+glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
+{
+ if (dpy && config) {
+ XMesaVisual xmvis = (XMesaVisual) config;
+#if 0
+ return xmvis->vishandle;
+#else
+ /* create a new vishandle - the cached one may be stale */
+ xmvis->vishandle = malloc(sizeof(XVisualInfo));
+ if (xmvis->vishandle) {
+ memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
+ }
+ return xmvis->vishandle;
+#endif
+ }
+ else {
+ return NULL;
+ }
+}
+
+
+PUBLIC GLXWindow
+glXCreateWindow(Display *dpy, GLXFBConfig config, Window win,
+ const int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ if (!xmvis)
+ return 0;
+
+ xmbuf = XMesaCreateWindowBuffer(xmvis, win);
+ if (!xmbuf)
+ return 0;
+
+ (void) dpy;
+ (void) attribList; /* Ignored in GLX 1.3 */
+
+ return win; /* A hack for now */
+}
+
+
+PUBLIC void
+glXDestroyWindow( Display *dpy, GLXWindow window )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window);
+ if (b)
+ XMesaDestroyBuffer(b);
+ /* don't destroy X window */
+}
+
+
+/* XXX untested */
+PUBLIC GLXPixmap
+glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap,
+ const int *attribList)
+{
+ XMesaVisual v = (XMesaVisual) config;
+ XMesaBuffer b;
+ const int *attr;
+ int target = 0, format = 0, mipmap = 0;
+ int value;
+
+ if (!dpy || !config || !pixmap)
+ return 0;
+
+ for (attr = attribList; attr && *attr; attr++) {
+ switch (*attr) {
+ case GLX_TEXTURE_FORMAT_EXT:
+ attr++;
+ switch (*attr) {
+ case GLX_TEXTURE_FORMAT_NONE_EXT:
+ case GLX_TEXTURE_FORMAT_RGB_EXT:
+ case GLX_TEXTURE_FORMAT_RGBA_EXT:
+ format = *attr;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ break;
+ case GLX_TEXTURE_TARGET_EXT:
+ attr++;
+ switch (*attr) {
+ case GLX_TEXTURE_1D_EXT:
+ case GLX_TEXTURE_2D_EXT:
+ case GLX_TEXTURE_RECTANGLE_EXT:
+ target = *attr;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ break;
+ case GLX_MIPMAP_TEXTURE_EXT:
+ attr++;
+ if (*attr)
+ mipmap = 1;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ }
+
+ if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ if (mipmap) {
+ if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ if (target == GLX_TEXTURE_1D_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+ else if (target == GLX_TEXTURE_2D_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+ if (target == GLX_TEXTURE_RECTANGLE_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+
+ if (format || target || mipmap) {
+ /* texture from pixmap */
+ b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
+ }
+ else {
+ b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
+ }
+ if (!b) {
+ return 0;
+ }
+
+ return pixmap;
+}
+
+
+PUBLIC void
+glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap);
+ if (b)
+ XMesaDestroyBuffer(b);
+ /* don't destroy X pixmap */
+}
+
+
+PUBLIC GLXPbuffer
+glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ const int *attrib;
+ int width = 0, height = 0;
+ GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
+
+ (void) dpy;
+
+ for (attrib = attribList; *attrib; attrib++) {
+ switch (*attrib) {
+ case GLX_PBUFFER_WIDTH:
+ attrib++;
+ width = *attrib;
+ break;
+ case GLX_PBUFFER_HEIGHT:
+ attrib++;
+ height = *attrib;
+ break;
+ case GLX_PRESERVED_CONTENTS:
+ attrib++;
+ preserveContents = *attrib;
+ break;
+ case GLX_LARGEST_PBUFFER:
+ attrib++;
+ useLargest = *attrib;
+ break;
+ default:
+ return 0;
+ }
+ }
+
+ if (width == 0 || height == 0)
+ return 0;
+
+ if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) {
+ /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
+ * allocate the largest possible buffer.
+ */
+ if (useLargest) {
+ width = PBUFFER_MAX_SIZE;
+ height = PBUFFER_MAX_SIZE;
+ }
+ }
+
+ xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
+ /* A GLXPbuffer handle must be an X Drawable because that's what
+ * glXMakeCurrent takes.
+ */
+ if (xmbuf) {
+ xmbuf->largestPbuffer = useLargest;
+ xmbuf->preservedContents = preserveContents;
+ return (GLXPbuffer) xmbuf->ws.drawable;
+ }
+ else {
+ return 0;
+ }
+}
+
+
+PUBLIC void
+glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ }
+}
+
+
+PUBLIC void
+glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute,
+ unsigned int *value)
+{
+ GLuint width, height;
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
+ if (!xmbuf) {
+ generate_error(dpy, GLXBadDrawable, draw, X_GLXGetDrawableAttributes, False);
+ return;
+ }
+
+ /* make sure buffer's dimensions are up to date */
+ xmesa_get_window_size(dpy, xmbuf, &width, &height);
+
+ switch (attribute) {
+ case GLX_WIDTH:
+ *value = width;
+ break;
+ case GLX_HEIGHT:
+ *value = height;
+ break;
+ case GLX_PRESERVED_CONTENTS:
+ *value = xmbuf->preservedContents;
+ break;
+ case GLX_LARGEST_PBUFFER:
+ *value = xmbuf->largestPbuffer;
+ break;
+ case GLX_FBCONFIG_ID:
+ *value = xmbuf->xm_visual->visinfo->visualid;
+ return;
+ case GLX_TEXTURE_FORMAT_EXT:
+ *value = xmbuf->TextureFormat;
+ break;
+ case GLX_TEXTURE_TARGET_EXT:
+ *value = xmbuf->TextureTarget;
+ break;
+ case GLX_MIPMAP_TEXTURE_EXT:
+ *value = xmbuf->TextureMipmap;
+ break;
+
+ default:
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, true);
+ return;
+ }
+}
+
+
+PUBLIC GLXContext
+glXCreateNewContext( Display *dpy, GLXFBConfig config,
+ int renderType, GLXContext shareCtx, Bool direct )
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+
+ if (!dpy || !config ||
+ (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
+ return 0;
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+PUBLIC int
+glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
+{
+ GLXContext glxCtx = ctx;
+ XMesaContext xmctx = glxCtx->xmesaContext;
+
+ (void) dpy;
+ (void) ctx;
+
+ switch (attribute) {
+ case GLX_FBCONFIG_ID:
+ *value = xmctx->xm_visual->visinfo->visualid;
+ break;
+ case GLX_RENDER_TYPE:
+ *value = GLX_RGBA_TYPE;
+ break;
+ case GLX_SCREEN:
+ *value = 0;
+ return Success;
+ default:
+ return GLX_BAD_ATTRIBUTE;
+ }
+ return 0;
+}
+
+
+PUBLIC void
+glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf)
+ xmbuf->selectedEvents = mask;
+}
+
+
+PUBLIC void
+glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf)
+ *mask = xmbuf->selectedEvents;
+ else
+ *mask = 0;
+}
+
+
+
+/*** GLX_SGI_swap_control ***/
+
+PUBLIC int
+glXSwapIntervalSGI(int interval)
+{
+ (void) interval;
+ return 0;
+}
+
+
+
+/*** GLX_SGI_video_sync ***/
+
+static unsigned int FrameCounter = 0;
+
+PUBLIC int
+glXGetVideoSyncSGI(unsigned int *count)
+{
+ /* this is a bogus implementation */
+ *count = FrameCounter++;
+ return 0;
+}
+
+PUBLIC int
+glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
+{
+ if (divisor <= 0 || remainder < 0)
+ return GLX_BAD_VALUE;
+ /* this is a bogus implementation */
+ FrameCounter++;
+ while (FrameCounter % divisor != remainder)
+ FrameCounter++;
+ *count = FrameCounter;
+ return 0;
+}
+
+
+
+/*** GLX_SGI_make_current_read ***/
+
+PUBLIC Bool
+glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read,
+ GLXContext ctx)
+{
+ return glXMakeContextCurrent( dpy, draw, read, ctx );
+}
+
+/* not used
+static GLXDrawable
+glXGetCurrentReadDrawableSGI(void)
+{
+ return 0;
+}
+*/
+
+
+/*** GLX_SGIX_video_source ***/
+#if defined(_VL_H)
+
+PUBLIC GLXVideoSourceSGIX
+glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server,
+ VLPath path, int nodeClass, VLNode drainNode)
+{
+ (void) dpy;
+ (void) screen;
+ (void) server;
+ (void) path;
+ (void) nodeClass;
+ (void) drainNode;
+ return 0;
+}
+
+PUBLIC void
+glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
+{
+ (void) dpy;
+ (void) src;
+}
+
+#endif
+
+
+/*** GLX_EXT_import_context ***/
+
+PUBLIC void
+glXFreeContextEXT(Display *dpy, GLXContext context)
+{
+ (void) dpy;
+ (void) context;
+}
+
+PUBLIC GLXContextID
+glXGetContextIDEXT(const GLXContext context)
+{
+ (void) context;
+ return 0;
+}
+
+PUBLIC GLXContext
+glXImportContextEXT(Display *dpy, GLXContextID contextID)
+{
+ (void) dpy;
+ (void) contextID;
+ return 0;
+}
+
+PUBLIC int
+glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute,
+ int *value)
+{
+ (void) dpy;
+ (void) context;
+ (void) attribute;
+ (void) value;
+ return 0;
+}
+
+
+
+/*** GLX_SGIX_fbconfig ***/
+
+PUBLIC int
+glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config,
+ int attribute, int *value)
+{
+ return glXGetFBConfigAttrib(dpy, config, attribute, value);
+}
+
+PUBLIC GLXFBConfigSGIX *
+glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list,
+ int *nelements)
+{
+ return (GLXFBConfig *) glXChooseFBConfig(dpy, screen,
+ attrib_list, nelements);
+}
+
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
+ Pixmap pixmap)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
+ return xmbuf->ws.drawable; /* need to return an X ID */
+}
+
+
+PUBLIC GLXContext
+glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
+ int renderType, GLXContext shareCtx,
+ Bool direct)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+
+ if (!dpy || !config ||
+ (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
+ return 0;
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+PUBLIC XVisualInfo *
+glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
+{
+ return glXGetVisualFromFBConfig(dpy, config);
+}
+
+
+PUBLIC GLXFBConfigSGIX
+glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
+{
+ XMesaVisual xmvis = find_glx_visual(dpy, vis);
+ if (!xmvis) {
+ /* This visual wasn't found with glXChooseVisual() */
+ xmvis = create_glx_visual(dpy, vis);
+ }
+
+ return (GLXFBConfigSGIX) xmvis;
+}
+
+
+
+/*** GLX_SGIX_pbuffer ***/
+
+PUBLIC GLXPbufferSGIX
+glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
+ unsigned int width, unsigned int height,
+ int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ const int *attrib;
+ GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
+
+ (void) dpy;
+
+ for (attrib = attribList; attrib && *attrib; attrib++) {
+ switch (*attrib) {
+ case GLX_PRESERVED_CONTENTS_SGIX:
+ attrib++;
+ preserveContents = *attrib; /* ignored */
+ break;
+ case GLX_LARGEST_PBUFFER_SGIX:
+ attrib++;
+ useLargest = *attrib; /* ignored */
+ break;
+ default:
+ return 0;
+ }
+ }
+
+ /* not used at this time */
+ (void) useLargest;
+ (void) preserveContents;
+
+ xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
+ /* A GLXPbuffer handle must be an X Drawable because that's what
+ * glXMakeCurrent takes.
+ */
+ return (GLXPbuffer) xmbuf->ws.drawable;
+}
+
+
+PUBLIC void
+glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
+ if (xmbuf) {
+ XMesaDestroyBuffer(xmbuf);
+ }
+}
+
+
+PUBLIC void
+glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute,
+ unsigned int *value)
+{
+ const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
+
+ if (!xmbuf) {
+ /* Generate GLXBadPbufferSGIX for bad pbuffer */
+ return;
+ }
+
+ switch (attribute) {
+ case GLX_PRESERVED_CONTENTS_SGIX:
+ *value = True;
+ break;
+ case GLX_LARGEST_PBUFFER_SGIX:
+ *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
+ break;
+ case GLX_WIDTH_SGIX:
+ *value = xmesa_buffer_width(xmbuf);
+ break;
+ case GLX_HEIGHT_SGIX:
+ *value = xmesa_buffer_height(xmbuf);
+ break;
+ case GLX_EVENT_MASK_SGIX:
+ *value = 0; /* XXX might be wrong */
+ break;
+ default:
+ *value = 0;
+ }
+}
+
+
+PUBLIC void
+glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf) {
+ /* Note: we'll never generate clobber events */
+ xmbuf->selectedEvents = mask;
+ }
+}
+
+
+PUBLIC void
+glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable,
+ unsigned long *mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf) {
+ *mask = xmbuf->selectedEvents;
+ }
+ else {
+ *mask = 0;
+ }
+}
+
+
+
+/*** GLX_SGI_cushion ***/
+
+PUBLIC void
+glXCushionSGI(Display *dpy, Window win, float cushion)
+{
+ (void) dpy;
+ (void) win;
+ (void) cushion;
+}
+
+
+
+/*** GLX_SGIX_video_resize ***/
+
+PUBLIC int
+glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel,
+ Window window)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) window;
+ return 0;
+}
+
+PUBLIC int
+glXChannelRectSGIX(Display *dpy, int screen, int channel,
+ int x, int y, int w, int h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+PUBLIC int
+glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
+ int *x, int *y, int *w, int *h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+PUBLIC int
+glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
+ int *dx, int *dy, int *dw, int *dh)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) dx;
+ (void) dy;
+ (void) dw;
+ (void) dh;
+ return 0;
+}
+
+PUBLIC int
+glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) synctype;
+ return 0;
+}
+
+
+
+/*** GLX_SGIX_dmbuffer **/
+
+#if defined(_DM_BUFFER_H_)
+PUBLIC Bool
+glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
+ DMparams *params, DMbuffer dmbuffer)
+{
+ (void) dpy;
+ (void) pbuffer;
+ (void) params;
+ (void) dmbuffer;
+ return False;
+}
+#endif
+
+
+/*** GLX_SUN_get_transparent_index ***/
+
+PUBLIC Status
+glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay,
+ unsigned long *pTransparent)
+{
+ (void) dpy;
+ (void) overlay;
+ (void) underlay;
+ (void) pTransparent;
+ return 0;
+}
+
+
+
+/*** GLX_MESA_release_buffers ***/
+
+/*
+ * Release the depth, stencil, accum buffers attached to a GLXDrawable
+ * (a window or pixmap) prior to destroying the GLXDrawable.
+ */
+PUBLIC Bool
+glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, d);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ return True;
+ }
+ return False;
+}
+
+/*** GLX_EXT_texture_from_pixmap ***/
+
+PUBLIC void
+glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
+ const int *attrib_list)
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
+ if (b)
+ XMesaBindTexImage(dpy, b, buffer, attrib_list);
+}
+
+PUBLIC void
+glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
+ if (b)
+ XMesaReleaseTexImage(dpy, b, buffer);
+}
+
+
+
+/*** GLX_ARB_create_context ***/
+
+
+GLXContext
+glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
+ GLXContext shareCtx, Bool direct,
+ const int *attrib_list)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ int majorVersion = 1, minorVersion = 0;
+ int contextFlags = 0x0;
+ int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
+ int renderType = GLX_RGBA_TYPE;
+ unsigned i;
+ Bool done = False;
+ const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB |
+ GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
+ GLXContext ctx;
+
+ /* parse attrib_list */
+ for (i = 0; !done && attrib_list && attrib_list[i]; i++) {
+ switch (attrib_list[i]) {
+ case GLX_CONTEXT_MAJOR_VERSION_ARB:
+ majorVersion = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_MINOR_VERSION_ARB:
+ minorVersion = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_FLAGS_ARB:
+ contextFlags = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_PROFILE_MASK_ARB:
+ profileMask = attrib_list[++i];
+ break;
+ case GLX_RENDER_TYPE:
+ renderType = attrib_list[++i];
+ break;
+ case 0:
+ /* end of list */
+ done = True;
+ break;
+ default:
+ /* bad attribute */
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+ }
+
+ /* check contextFlags */
+ if (contextFlags & ~contextFlagsAll) {
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ /* check profileMask */
+ if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB &&
+ profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB &&
+ profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT) {
+ generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
+ return NULL;
+ }
+
+ /* check renderType */
+ if (renderType != GLX_RGBA_TYPE &&
+ renderType != GLX_COLOR_INDEX_TYPE) {
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ /* check version */
+ if (majorVersion <= 0 ||
+ minorVersion < 0 ||
+ (profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 5) ||
+ (majorVersion == 2 && minorVersion > 1) ||
+ (majorVersion == 3 && minorVersion > 3) ||
+ (majorVersion == 4 && minorVersion > 5) ||
+ majorVersion > 4))) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+ if (profileMask == GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 1) ||
+ (majorVersion == 2 && minorVersion > 0) ||
+ (majorVersion == 3 && minorVersion > 1) ||
+ majorVersion > 3)) {
+ /* GLX_EXT_create_context_es2_profile says nothing to justifying a
+ * different error code for invalid ES versions, but this is what NVIDIA
+ * does and piglit expects.
+ */
+ generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
+ return NULL;
+ }
+
+ if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
+ majorVersion < 3) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ ctx = create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ majorVersion, minorVersion,
+ profileMask, contextFlags);
+ if (!ctx) {
+ generate_error(dpy, GLXBadFBConfig, 0, X_GLXCreateContextAttribsARB, False);
+ }
+
+ return ctx;
+}
projects / mesa.git / blobdiff