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glew/src/visualinfo.c
nigels b19763ad19 For ID: 3016571 - Unnecessary global variable ctx 
git-svn-id: https://glew.svn.sourceforge.net/svnroot/glew/trunk/glew@604 783a27ee-832a-0410-bc00-9f386506c6dd
2010-06-15 17:33:56 +00:00

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/*
** visualinfo.c
**
** Copyright (C) Nate Robins, 1997
** Michael Wimmer, 1999
** Milan Ikits, 2002-2008
**
** visualinfo is a small utility that displays all available visuals,
** aka. pixelformats, in an OpenGL system along with renderer version
** information. It shows a table of all the visuals that support OpenGL
** along with their capabilities. The format of the table is similar to
** that of glxinfo on Unix systems:
**
** visual ~= pixel format descriptor
** id = visual id (integer from 1 - max visuals)
** tp = type (wn: window, pb: pbuffer, wp: window & pbuffer, bm: bitmap)
** ac = acceleration (ge: generic, fu: full, no: none)
** fm = format (i: integer, f: float, c: color index)
** db = double buffer (y = yes)
** sw = swap method (x: exchange, c: copy, u: undefined)
** st = stereo (y = yes)
** sz = total # bits
** r = # bits of red
** g = # bits of green
** b = # bits of blue
** a = # bits of alpha
** axbf = # aux buffers
** dpth = # bits of depth
** stcl = # bits of stencil
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <GL/glew.h>
#if defined(_WIN32)
#include <GL/wglew.h>
#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
#include <AGL/agl.h>
#else
#include <GL/glxew.h>
#endif
#ifdef GLEW_MX
GLEWContext _glewctx;
# define glewGetContext() (&_glewctx)
# ifdef _WIN32
WGLEWContext _wglewctx;
# define wglewGetContext() (&_wglewctx)
# elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
GLXEWContext _glxewctx;
# define glxewGetContext() (&_glxewctx)
# endif
#endif /* GLEW_MX */
typedef struct GLContextStruct
{
#ifdef _WIN32
HWND wnd;
HDC dc;
HGLRC rc;
#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
AGLContext ctx, octx;
#else
Display* dpy;
XVisualInfo* vi;
GLXContext ctx;
Window wnd;
Colormap cmap;
#endif
} GLContext;
void InitContext (GLContext* ctx);
GLboolean CreateContext (GLContext* ctx);
void DestroyContext (GLContext* ctx);
void VisualInfo (GLContext* ctx);
void PrintExtensions (const char* s);
GLboolean ParseArgs (int argc, char** argv);
int showall = 0;
int displaystdout = 0;
int verbose = 0;
int drawableonly = 0;
char* display = NULL;
int visual = -1;
FILE* file = 0;
int
main (int argc, char** argv)
{
GLenum err;
GLContext ctx;
/* ---------------------------------------------------------------------- */
/* parse arguments */
if (GL_TRUE == ParseArgs(argc-1, argv+1))
{
#if defined(_WIN32)
fprintf(stderr, "Usage: visualinfo [-a] [-s] [-h] [-pf <id>]\n");
fprintf(stderr, " -a: show all visuals\n");
fprintf(stderr, " -s: display to stdout instead of visualinfo.txt\n");
fprintf(stderr, " -pf <id>: use given pixelformat\n");
fprintf(stderr, " -h: this screen\n");
#else
fprintf(stderr, "Usage: visualinfo [-h] [-display <display>] [-visual <id>]\n");
fprintf(stderr, " -h: this screen\n");
fprintf(stderr, " -display <display>: use given display\n");
fprintf(stderr, " -visual <id>: use given visual\n");
#endif
return 1;
}
/* ---------------------------------------------------------------------- */
/* create OpenGL rendering context */
InitContext(&ctx);
if (GL_TRUE == CreateContext(&ctx))
{
fprintf(stderr, "Error: CreateContext failed\n");
DestroyContext(&ctx);
return 1;
}
/* ---------------------------------------------------------------------- */
/* initialize GLEW */
glewExperimental = GL_TRUE;
#ifdef GLEW_MX
err = glewContextInit(glewGetContext());
# ifdef _WIN32
err = err || wglewContextInit(wglewGetContext());
# elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
err = err || glxewContextInit(glxewGetContext());
# endif
#else
err = glewInit();
#endif
if (GLEW_OK != err)
{
fprintf(stderr, "Error [main]: glewInit failed: %s\n", glewGetErrorString(err));
DestroyContext(&ctx);
return 1;
}
/* ---------------------------------------------------------------------- */
/* open file */
#if defined(_WIN32)
if (!displaystdout)
file = fopen("visualinfo.txt", "w");
if (file == NULL)
file = stdout;
#else
file = stdout;
#endif
/* ---------------------------------------------------------------------- */
/* output header information */
/* OpenGL extensions */
fprintf(file, "OpenGL vendor string: %s\n", glGetString(GL_VENDOR));
fprintf(file, "OpenGL renderer string: %s\n", glGetString(GL_RENDERER));
fprintf(file, "OpenGL version string: %s\n", glGetString(GL_VERSION));
fprintf(file, "OpenGL extensions (GL_): \n");
PrintExtensions((char*)glGetString(GL_EXTENSIONS));
/* GLU extensions */
fprintf(file, "GLU version string: %s\n", gluGetString(GLU_VERSION));
fprintf(file, "GLU extensions (GLU_): \n");
PrintExtensions((char*)gluGetString(GLU_EXTENSIONS));
/* ---------------------------------------------------------------------- */
/* extensions string */
#if defined(_WIN32)
/* WGL extensions */
if (WGLEW_ARB_extensions_string || WGLEW_EXT_extensions_string)
{
fprintf(file, "WGL extensions (WGL_): \n");
PrintExtensions(wglGetExtensionsStringARB ?
(char*)wglGetExtensionsStringARB(ctx.dc) :
(char*)wglGetExtensionsStringEXT());
}
#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
#else
/* GLX extensions */
fprintf(file, "GLX extensions (GLX_): \n");
PrintExtensions(glXQueryExtensionsString(glXGetCurrentDisplay(),
DefaultScreen(glXGetCurrentDisplay())));
#endif
/* ---------------------------------------------------------------------- */
/* enumerate all the formats */
VisualInfo(&ctx);
/* ---------------------------------------------------------------------- */
/* release resources */
DestroyContext(&ctx);
if (file != stdout)
fclose(file);
return 0;
}
/* do the magic to separate all extensions with comma's, except
for the last one that _may_ terminate in a space. */
void PrintExtensions (const char* s)
{
char t[80];
int i=0;
char* p=0;
t[79] = '\0';
while (*s)
{
t[i++] = *s;
if(*s == ' ')
{
if (*(s+1) != '\0') {
t[i-1] = ',';
t[i] = ' ';
p = &t[i++];
}
else /* zoinks! last one terminated in a space! */
{
t[i-1] = '\0';
}
}
if(i > 80 - 5)
{
*p = t[i] = '\0';
fprintf(file, " %s\n", t);
p++;
i = (int)strlen(p);
strcpy(t, p);
}
s++;
}
t[i] = '\0';
fprintf(file, " %s.\n", t);
}
/* ---------------------------------------------------------------------- */
#if defined(_WIN32)
void
VisualInfoARB (GLContext* ctx)
{
int attrib[32], value[32], n_attrib, n_pbuffer=0, n_float=0;
int i, pf, maxpf;
unsigned int c;
/* to get pbuffer capable pixel formats */
attrib[0] = WGL_DRAW_TO_PBUFFER_ARB;
attrib[1] = GL_TRUE;
attrib[2] = 0;
wglChoosePixelFormatARB(ctx->dc, attrib, 0, 1, &pf, &c);
/* query number of pixel formats */
attrib[0] = WGL_NUMBER_PIXEL_FORMATS_ARB;
wglGetPixelFormatAttribivARB(ctx->dc, 0, 0, 1, attrib, value);
maxpf = value[0];
for (i=0; i<32; i++)
value[i] = 0;
attrib[0] = WGL_SUPPORT_OPENGL_ARB;
attrib[1] = WGL_DRAW_TO_WINDOW_ARB;
attrib[2] = WGL_DRAW_TO_BITMAP_ARB;
attrib[3] = WGL_ACCELERATION_ARB;
/* WGL_NO_ACCELERATION_ARB, WGL_GENERIC_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB */
attrib[4] = WGL_SWAP_METHOD_ARB;
/* WGL_SWAP_EXCHANGE_ARB, WGL_SWAP_COPY_ARB, WGL_SWAP_UNDEFINED_ARB */
attrib[5] = WGL_DOUBLE_BUFFER_ARB;
attrib[6] = WGL_STEREO_ARB;
attrib[7] = WGL_PIXEL_TYPE_ARB;
/* WGL_TYPE_RGBA_ARB, WGL_TYPE_COLORINDEX_ARB,
WGL_TYPE_RGBA_FLOAT_ATI (WGL_ATI_pixel_format_float) */
/* Color buffer information */
attrib[8] = WGL_COLOR_BITS_ARB;
attrib[9] = WGL_RED_BITS_ARB;
attrib[10] = WGL_GREEN_BITS_ARB;
attrib[11] = WGL_BLUE_BITS_ARB;
attrib[12] = WGL_ALPHA_BITS_ARB;
/* Accumulation buffer information */
attrib[13] = WGL_ACCUM_BITS_ARB;
attrib[14] = WGL_ACCUM_RED_BITS_ARB;
attrib[15] = WGL_ACCUM_GREEN_BITS_ARB;
attrib[16] = WGL_ACCUM_BLUE_BITS_ARB;
attrib[17] = WGL_ACCUM_ALPHA_BITS_ARB;
/* Depth, stencil, and aux buffer information */
attrib[18] = WGL_DEPTH_BITS_ARB;
attrib[19] = WGL_STENCIL_BITS_ARB;
attrib[20] = WGL_AUX_BUFFERS_ARB;
/* Layer information */
attrib[21] = WGL_NUMBER_OVERLAYS_ARB;
attrib[22] = WGL_NUMBER_UNDERLAYS_ARB;
attrib[23] = WGL_SWAP_LAYER_BUFFERS_ARB;
attrib[24] = WGL_SAMPLES_ARB;
attrib[25] = WGL_SUPPORT_GDI_ARB;
n_attrib = 26;
if (WGLEW_ARB_pbuffer)
{
attrib[n_attrib] = WGL_DRAW_TO_PBUFFER_ARB;
n_pbuffer = n_attrib;
n_attrib++;
}
if (WGLEW_NV_float_buffer)
{
attrib[n_attrib] = WGL_FLOAT_COMPONENTS_NV;
n_float = n_attrib;
n_attrib++;
}
if (!verbose)
{
/* print table header */
fprintf(file, " +-----+-------------------------+-----------------+----------+-----------------+----------+\n");
fprintf(file, " | | visual | color | ax dp st | accum | layer |\n");
fprintf(file, " | id | tp ac gd fm db sw st ms | sz r g b a | bf th cl | sz r g b a | ov un sw |\n");
fprintf(file, " +-----+-------------------------+-----------------+----------+-----------------+----------+\n");
/* loop through all the pixel formats */
for(i = 1; i <= maxpf; i++)
{
wglGetPixelFormatAttribivARB(ctx->dc, i, 0, n_attrib, attrib, value);
/* only describe this format if it supports OpenGL */
if (!value[0]) continue;
/* by default show only fully accelerated window or pbuffer capable visuals */
if (!showall
&& ((value[2] && !value[1])
|| (!WGLEW_ARB_pbuffer || !value[n_pbuffer])
|| (value[3] != WGL_FULL_ACCELERATION_ARB))) continue;
/* print out the information for this visual */
/* visual id */
fprintf(file, " |% 4d | ", i);
/* visual type */
if (value[1])
{
if (WGLEW_ARB_pbuffer && value[n_pbuffer]) fprintf(file, "wp ");
else fprintf(file, "wn ");
}
else
{
if (value[2]) fprintf(file, "bm ");
else if (WGLEW_ARB_pbuffer && value[n_pbuffer]) fprintf(file, "pb ");
}
/* acceleration */
fprintf(file, "%s ", value[3] == WGL_FULL_ACCELERATION_ARB ? "fu" :
value[3] == WGL_GENERIC_ACCELERATION_ARB ? "ge" :
value[3] == WGL_NO_ACCELERATION_ARB ? "no" : ". ");
/* gdi support */
fprintf(file, " %c ", value[25] ? 'y' : '.');
/* format */
if (WGLEW_NV_float_buffer && value[n_float]) fprintf(file, " f ");
else if (WGLEW_ATI_pixel_format_float && value[7] == WGL_TYPE_RGBA_FLOAT_ATI) fprintf(file, " f ");
else if (value[7] == WGL_TYPE_RGBA_ARB) fprintf(file, " i ");
else if (value[7] == WGL_TYPE_COLORINDEX_ARB) fprintf(file, " c ");
/* double buffer */
fprintf(file, " %c ", value[5] ? 'y' : '.');
/* swap method */
if (value[4] == WGL_SWAP_EXCHANGE_ARB) fprintf(file, " x ");
else if (value[4] == WGL_SWAP_COPY_ARB) fprintf(file, " c ");
else if (value[4] == WGL_SWAP_UNDEFINED_ARB) fprintf(file, " . ");
else fprintf(file, " . ");
/* stereo */
fprintf(file, " %c ", value[6] ? 'y' : '.');
/* multisample */
if (value[24] > 0)
fprintf(file, "%2d | ", value[24]);
else
fprintf(file, " . | ");
/* color size */
if (value[8]) fprintf(file, "%3d ", value[8]);
else fprintf(file, " . ");
/* red */
if (value[9]) fprintf(file, "%2d ", value[9]);
else fprintf(file, " . ");
/* green */
if (value[10]) fprintf(file, "%2d ", value[10]);
else fprintf(file, " . ");
/* blue */
if (value[11]) fprintf(file, "%2d ", value[11]);
else fprintf(file, " . ");
/* alpha */
if (value[12]) fprintf(file, "%2d | ", value[12]);
else fprintf(file, " . | ");
/* aux buffers */
if (value[20]) fprintf(file, "%2d ", value[20]);
else fprintf(file, " . ");
/* depth */
if (value[18]) fprintf(file, "%2d ", value[18]);
else fprintf(file, " . ");
/* stencil */
if (value[19]) fprintf(file, "%2d | ", value[19]);
else fprintf(file, " . | ");
/* accum size */
if (value[13]) fprintf(file, "%3d ", value[13]);
else fprintf(file, " . ");
/* accum red */
if (value[14]) fprintf(file, "%2d ", value[14]);
else fprintf(file, " . ");
/* accum green */
if (value[15]) fprintf(file, "%2d ", value[15]);
else fprintf(file, " . ");
/* accum blue */
if (value[16]) fprintf(file, "%2d ", value[16]);
else fprintf(file, " . ");
/* accum alpha */
if (value[17]) fprintf(file, "%2d | ", value[17]);
else fprintf(file, " . | ");
/* overlay */
if (value[21]) fprintf(file, "%2d ", value[21]);
else fprintf(file, " . ");
/* underlay */
if (value[22]) fprintf(file, "%2d ", value[22]);
else fprintf(file, " . ");
/* layer swap */
if (value[23]) fprintf(file, "y ");
else fprintf(file, " . ");
fprintf(file, "|\n");
}
/* print table footer */
fprintf(file, " +-----+-------------------------+-----------------+----------+-----------------+----------+\n");
fprintf(file, " | | visual | color | ax dp st | accum | layer |\n");
fprintf(file, " | id | tp ac gd fm db sw st ms | sz r g b a | bf th cl | sz r g b a | ov un sw |\n");
fprintf(file, " +-----+-------------------------+-----------------+----------+-----------------+----------+\n");
}
else /* verbose */
{
#if 0
fprintf(file, "\n");
/* loop through all the pixel formats */
for(i = 1; i <= maxpf; i++)
{
DescribePixelFormat(ctx->dc, i, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
/* only describe this format if it supports OpenGL */
if(!(pfd.dwFlags & PFD_SUPPORT_OPENGL)
|| (drawableonly && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))) continue;
fprintf(file, "Visual ID: %2d depth=%d class=%s\n", i, pfd.cDepthBits,
pfd.cColorBits <= 8 ? "PseudoColor" : "TrueColor");
fprintf(file, " bufferSize=%d level=%d renderType=%s doubleBuffer=%d stereo=%d\n", pfd.cColorBits, pfd.bReserved, pfd.iPixelType == PFD_TYPE_RGBA ? "rgba" : "ci", pfd.dwFlags & PFD_DOUBLEBUFFER, pfd.dwFlags & PFD_STEREO);
fprintf(file, " generic=%d generic accelerated=%d\n", (pfd.dwFlags & PFD_GENERIC_FORMAT) == PFD_GENERIC_FORMAT, (pfd.dwFlags & PFD_GENERIC_ACCELERATED) == PFD_GENERIC_ACCELERATED);
fprintf(file, " rgba: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", pfd.cRedBits, pfd.cGreenBits, pfd.cBlueBits, pfd.cAlphaBits);
fprintf(file, " auxBuffers=%d depthSize=%d stencilSize=%d\n", pfd.cAuxBuffers, pfd.cDepthBits, pfd.cStencilBits);
fprintf(file, " accum: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", pfd.cAccumRedBits, pfd.cAccumGreenBits, pfd.cAccumBlueBits, pfd.cAccumAlphaBits);
fprintf(file, " multiSample=%d multisampleBuffers=%d\n", 0, 0);
fprintf(file, " Opaque.\n");
}
#endif
}
}
void
VisualInfoGDI (GLContext* ctx)
{
int i, maxpf;
PIXELFORMATDESCRIPTOR pfd;
/* calling DescribePixelFormat() with NULL pfd (!!!) return maximum
number of pixel formats */
maxpf = DescribePixelFormat(ctx->dc, 1, 0, NULL);
if (!verbose)
{
fprintf(file, "-----------------------------------------------------------------------------\n");
fprintf(file, " visual x bf lv rg d st ge ge r g b a ax dp st accum buffs ms \n");
fprintf(file, " id dep tp sp sz l ci b ro ne ac sz sz sz sz bf th cl sz r g b a ns b\n");
fprintf(file, "-----------------------------------------------------------------------------\n");
/* loop through all the pixel formats */
for(i = 1; i <= maxpf; i++)
{
DescribePixelFormat(ctx->dc, i, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
/* only describe this format if it supports OpenGL */
if(!(pfd.dwFlags & PFD_SUPPORT_OPENGL)
|| (drawableonly && (pfd.dwFlags & PFD_DRAW_TO_BITMAP))) continue;
/* other criteria could be tested here for actual pixel format
choosing in an application:
for (...each pixel format...) {
if (pfd.dwFlags & PFD_SUPPORT_OPENGL &&
pfd.dwFlags & PFD_DOUBLEBUFFER &&
pfd.cDepthBits >= 24 &&
pfd.cColorBits >= 24)
{
goto found;
}
}
... not found so exit ...
found:
... found so use it ...
*/
/* print out the information for this pixel format */
fprintf(file, "0x%02x ", i);
fprintf(file, "%3d ", pfd.cColorBits);
if(pfd.dwFlags & PFD_DRAW_TO_WINDOW) fprintf(file, "wn ");
else if(pfd.dwFlags & PFD_DRAW_TO_BITMAP) fprintf(file, "bm ");
else fprintf(file, "pb ");
/* should find transparent pixel from LAYERPLANEDESCRIPTOR */
fprintf(file, " . ");
fprintf(file, "%3d ", pfd.cColorBits);
/* bReserved field indicates number of over/underlays */
if(pfd.bReserved) fprintf(file, " %d ", pfd.bReserved);
else fprintf(file, " . ");
fprintf(file, " %c ", pfd.iPixelType == PFD_TYPE_RGBA ? 'r' : 'c');
fprintf(file, "%c ", pfd.dwFlags & PFD_DOUBLEBUFFER ? 'y' : '.');
fprintf(file, " %c ", pfd.dwFlags & PFD_STEREO ? 'y' : '.');
/* added: */
fprintf(file, " %c ", pfd.dwFlags & PFD_GENERIC_FORMAT ? 'y' : '.');
fprintf(file, " %c ", pfd.dwFlags & PFD_GENERIC_ACCELERATED ? 'y' : '.');
if(pfd.cRedBits && pfd.iPixelType == PFD_TYPE_RGBA)
fprintf(file, "%2d ", pfd.cRedBits);
else fprintf(file, " . ");
if(pfd.cGreenBits && pfd.iPixelType == PFD_TYPE_RGBA)
fprintf(file, "%2d ", pfd.cGreenBits);
else fprintf(file, " . ");
if(pfd.cBlueBits && pfd.iPixelType == PFD_TYPE_RGBA)
fprintf(file, "%2d ", pfd.cBlueBits);
else fprintf(file, " . ");
if(pfd.cAlphaBits && pfd.iPixelType == PFD_TYPE_RGBA)
fprintf(file, "%2d ", pfd.cAlphaBits);
else fprintf(file, " . ");
if(pfd.cAuxBuffers) fprintf(file, "%2d ", pfd.cAuxBuffers);
else fprintf(file, " . ");
if(pfd.cDepthBits) fprintf(file, "%2d ", pfd.cDepthBits);
else fprintf(file, " . ");
if(pfd.cStencilBits) fprintf(file, "%2d ", pfd.cStencilBits);
else fprintf(file, " . ");
if(pfd.cAccumBits) fprintf(file, "%3d ", pfd.cAccumBits);
else fprintf(file, " . ");
if(pfd.cAccumRedBits) fprintf(file, "%2d ", pfd.cAccumRedBits);
else fprintf(file, " . ");
if(pfd.cAccumGreenBits) fprintf(file, "%2d ", pfd.cAccumGreenBits);
else fprintf(file, " . ");
if(pfd.cAccumBlueBits) fprintf(file, "%2d ", pfd.cAccumBlueBits);
else fprintf(file, " . ");
if(pfd.cAccumAlphaBits) fprintf(file, "%2d ", pfd.cAccumAlphaBits);
else fprintf(file, " . ");
/* no multisample in win32 */
fprintf(file, " . .\n");
}
/* print table footer */
fprintf(file, "-----------------------------------------------------------------------------\n");
fprintf(file, " visual x bf lv rg d st ge ge r g b a ax dp st accum buffs ms \n");
fprintf(file, " id dep tp sp sz l ci b ro ne ac sz sz sz sz bf th cl sz r g b a ns b\n");
fprintf(file, "-----------------------------------------------------------------------------\n");
}
else /* verbose */
{
fprintf(file, "\n");
/* loop through all the pixel formats */
for(i = 1; i <= maxpf; i++)
{
DescribePixelFormat(ctx->dc, i, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
/* only describe this format if it supports OpenGL */
if(!(pfd.dwFlags & PFD_SUPPORT_OPENGL)
|| (drawableonly && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))) continue;
fprintf(file, "Visual ID: %2d depth=%d class=%s\n", i, pfd.cDepthBits,
pfd.cColorBits <= 8 ? "PseudoColor" : "TrueColor");
fprintf(file, " bufferSize=%d level=%d renderType=%s doubleBuffer=%ld stereo=%ld\n", pfd.cColorBits, pfd.bReserved, pfd.iPixelType == PFD_TYPE_RGBA ? "rgba" : "ci", pfd.dwFlags & PFD_DOUBLEBUFFER, pfd.dwFlags & PFD_STEREO);
fprintf(file, " generic=%d generic accelerated=%d\n", (pfd.dwFlags & PFD_GENERIC_FORMAT) == PFD_GENERIC_FORMAT, (pfd.dwFlags & PFD_GENERIC_ACCELERATED) == PFD_GENERIC_ACCELERATED);
fprintf(file, " rgba: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", pfd.cRedBits, pfd.cGreenBits, pfd.cBlueBits, pfd.cAlphaBits);
fprintf(file, " auxBuffers=%d depthSize=%d stencilSize=%d\n", pfd.cAuxBuffers, pfd.cDepthBits, pfd.cStencilBits);
fprintf(file, " accum: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", pfd.cAccumRedBits, pfd.cAccumGreenBits, pfd.cAccumBlueBits, pfd.cAccumAlphaBits);
fprintf(file, " multiSample=%d multisampleBuffers=%d\n", 0, 0);
fprintf(file, " Opaque.\n");
}
}
}
void
VisualInfo (GLContext* ctx)
{
if (WGLEW_ARB_pixel_format)
VisualInfoARB(ctx);
else
VisualInfoGDI(ctx);
}
/* ---------------------------------------------------------------------- */
#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
void
VisualInfo (GLContext* ctx)
{
/*
int attrib[] = { AGL_RGBA, AGL_NONE };
AGLPixelFormat pf;
GLint value;
pf = aglChoosePixelFormat(NULL, 0, attrib);
while (pf != NULL)
{
aglDescribePixelFormat(pf, GL_RGBA, &value);
fprintf(stderr, "%d\n", value);
pf = aglNextPixelFormat(pf);
}
*/
}
#else /* GLX */
void
VisualInfo (GLContext* ctx)
{
int n_fbc;
GLXFBConfig* fbc;
int value, ret, i;
fbc = glXGetFBConfigs(ctx->dpy, DefaultScreen(ctx->dpy), &n_fbc);
if (fbc)
{
if (!verbose)
{
/* print table header */
fprintf(file, " +-----+-------------------------+-----------------+----------+-------------+-------+------+\n");
fprintf(file, " | | visual | color | ax dp st | accum | ms | cav |\n");
fprintf(file, " | id | tp xr cl fm db st lv xp | sz r g b a | bf th cl | r g b a | ns b | eat |\n");
fprintf(file, " +-----+-------------------------+-----------------+----------+-------------+-------+------+\n");
/* loop through all the fbcs */
for (i=0; i<n_fbc; i++)
{
/* print out the information for this fbc */
/* visual id */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_FBCONFIG_ID, &value);
if (ret != Success)
{
fprintf(file, "| ? |");
}
else
{
fprintf(file, " |% 4d | ", value);
}
/* visual type */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_DRAWABLE_TYPE, &value);
if (ret != Success)
{
fprintf(file, " ? ");
}
else
{
if (value & GLX_WINDOW_BIT)
{
if (value & GLX_PBUFFER_BIT)
{
fprintf(file, "wp ");
}
else
{
fprintf(file, "wn ");
}
}
else
{
if (value & GLX_PBUFFER_BIT)
{
fprintf(file, "pb ");
}
else if (value & GLX_PIXMAP_BIT)
{
fprintf(file, "pm ");
}
else
{
fprintf(file, " ? ");
}
}
}
/* x renderable */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_X_RENDERABLE, &value);
if (ret != Success)
{
fprintf(file, " ? ");
}
else
{
fprintf(file, value ? " y " : " n ");
}
/* class */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_X_VISUAL_TYPE, &value);
if (ret != Success)
{
fprintf(file, " ? ");
}
else
{
if (GLX_TRUE_COLOR == value)
fprintf(file, "tc ");
else if (GLX_DIRECT_COLOR == value)
fprintf(file, "dc ");
else if (GLX_PSEUDO_COLOR == value)
fprintf(file, "pc ");
else if (GLX_STATIC_COLOR == value)
fprintf(file, "sc ");
else if (GLX_GRAY_SCALE == value)
fprintf(file, "gs ");
else if (GLX_STATIC_GRAY == value)
fprintf(file, "sg ");
else if (GLX_X_VISUAL_TYPE == value)
fprintf(file, " . ");
else
fprintf(file, " ? ");
}
/* format */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_RENDER_TYPE, &value);
if (ret != Success)
{
fprintf(file, " ? ");
}
else
{
if (GLXEW_NV_float_buffer)
{
int ret2, value2;
ret2 = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_FLOAT_COMPONENTS_NV, &value2);
if (Success == ret2 && GL_TRUE == value2)
{
fprintf(file, " f ");
}
else if (value & GLX_RGBA_BIT)
fprintf(file, " i ");
else if (value & GLX_COLOR_INDEX_BIT)
fprintf(file, " c ");
else
fprintf(file, " ? ");
}
else
{
if (value & GLX_RGBA_FLOAT_ATI_BIT)
fprintf(file, " f ");
else if (value & GLX_RGBA_BIT)
fprintf(file, " i ");
else if (value & GLX_COLOR_INDEX_BIT)
fprintf(file, " c ");
else
fprintf(file, " ? ");
}
}
/* double buffer */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_DOUBLEBUFFER, &value);
fprintf(file, " %c ", Success != ret ? '?' : (value ? 'y' : '.'));
/* stereo */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_STEREO, &value);
fprintf(file, " %c ", Success != ret ? '?' : (value ? 'y' : '.'));
/* level */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_LEVEL, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
fprintf(file, "%2d ", value);
}
/* transparency */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_TRANSPARENT_TYPE, &value);
if (Success != ret)
{
fprintf(file, " ? | ");
}
else
{
if (GLX_TRANSPARENT_RGB == value)
fprintf(file, " r | ");
else if (GLX_TRANSPARENT_INDEX == value)
fprintf(file, " i | ");
else if (GLX_NONE == value)
fprintf(file, " . | ");
else
fprintf(file, " ? | ");
}
/* color size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_BUFFER_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%3d ", value);
else
fprintf(file, " . ");
}
/* red size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_RED_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* green size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_GREEN_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* blue size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_BLUE_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* alpha size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_ALPHA_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? | ");
}
else
{
if (value)
fprintf(file, "%2d | ", value);
else
fprintf(file, " . | ");
}
/* aux buffers */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_AUX_BUFFERS, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* depth size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_DEPTH_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* stencil size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_STENCIL_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? | ");
}
else
{
if (value)
fprintf(file, "%2d | ", value);
else
fprintf(file, " . | ");
}
/* accum red size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_ACCUM_RED_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* accum green size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_ACCUM_GREEN_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* accum blue size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_ACCUM_BLUE_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
if (value)
fprintf(file, "%2d ", value);
else
fprintf(file, " . ");
}
/* accum alpha size */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_ACCUM_ALPHA_SIZE, &value);
if (Success != ret)
{
fprintf(file, " ? | ");
}
else
{
if (value)
fprintf(file, "%2d | ", value);
else
fprintf(file, " . | ");
}
/* multisample */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_SAMPLES, &value);
if (Success != ret)
{
fprintf(file, " ? ");
}
else
{
fprintf(file, "%2d ", value);
}
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_SAMPLE_BUFFERS, &value);
if (Success != ret)
{
fprintf(file, " ? | ");
}
else
{
fprintf(file, "%2d | ", value);
}
/* caveat */
ret = glXGetFBConfigAttrib(ctx->dpy, fbc[i], GLX_CONFIG_CAVEAT, &value);
if (Success != ret)
{
fprintf(file, "???? |");
}
else
{
if (GLX_NONE == value)
fprintf(file, "none |\n");
else if (GLX_SLOW_CONFIG == value)
fprintf(file, "slow |\n");
else if (GLX_NON_CONFORMANT_CONFIG == value)
fprintf(file, "ncft |\n");
else
fprintf(file, "???? |\n");
}
}
/* print table footer */
fprintf(file, " +-----+-------------------------+-----------------+----------+-------------+-------+------+\n");
fprintf(file, " | id | tp xr cl fm db st lv xp | sz r g b a | bf th cl | r g b a | ns b | eat |\n");
fprintf(file, " | | visual | color | ax dp st | accum | ms | cav |\n");
fprintf(file, " +-----+-------------------------+-----------------+----------+-------------+-------+------+\n");
}
}
}
#endif
/* ------------------------------------------------------------------------ */
#if defined(_WIN32)
void InitContext (GLContext* ctx)
{
ctx->wnd = NULL;
ctx->dc = NULL;
ctx->rc = NULL;
}
GLboolean CreateContext (GLContext* ctx)
{
WNDCLASS wc;
PIXELFORMATDESCRIPTOR pfd;
/* check for input */
if (NULL == ctx) return GL_TRUE;
/* register window class */
ZeroMemory(&wc, sizeof(WNDCLASS));
wc.hInstance = GetModuleHandle(NULL);
wc.lpfnWndProc = DefWindowProc;
wc.lpszClassName = "GLEW";
if (0 == RegisterClass(&wc)) return GL_TRUE;
/* create window */
ctx->wnd = CreateWindow("GLEW", "GLEW", 0, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL,
GetModuleHandle(NULL), NULL);
if (NULL == ctx->wnd) return GL_TRUE;
/* get the device context */
ctx->dc = GetDC(ctx->wnd);
if (NULL == ctx->dc) return GL_TRUE;
/* find pixel format */
ZeroMemory(&pfd, sizeof(PIXELFORMATDESCRIPTOR));
if (visual == -1) /* find default */
{
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
visual = ChoosePixelFormat(ctx->dc, &pfd);
if (0 == visual) return GL_TRUE;
}
/* set the pixel format for the dc */
if (FALSE == SetPixelFormat(ctx->dc, visual, &pfd)) return GL_TRUE;
/* create rendering context */
ctx->rc = wglCreateContext(ctx->dc);
if (NULL == ctx->rc) return GL_TRUE;
if (FALSE == wglMakeCurrent(ctx->dc, ctx->rc)) return GL_TRUE;
return GL_FALSE;
}
void DestroyContext (GLContext* ctx)
{
if (NULL == ctx) return;
if (NULL != ctx->rc) wglMakeCurrent(NULL, NULL);
if (NULL != ctx->rc) wglDeleteContext(wglGetCurrentContext());
if (NULL != ctx->wnd && NULL != ctx->dc) ReleaseDC(ctx->wnd, ctx->dc);
if (NULL != ctx->wnd) DestroyWindow(ctx->wnd);
UnregisterClass("GLEW", GetModuleHandle(NULL));
}
/* ------------------------------------------------------------------------ */
#elif defined(__APPLE__) && !defined(GLEW_APPLE_GLX)
void InitContext (GLContext* ctx)
{
ctx->ctx = NULL;
ctx->octx = NULL;
}
GLboolean CreateContext (GLContext* ctx)
{
int attrib[] = { AGL_RGBA, AGL_NONE };
AGLPixelFormat pf;
/* check input */
if (NULL == ctx) return GL_TRUE;
/*int major, minor;
SetPortWindowPort(wnd);
aglGetVersion(&major, &minor);
fprintf(stderr, "GL %d.%d\n", major, minor);*/
pf = aglChoosePixelFormat(NULL, 0, attrib);
if (NULL == pf) return GL_TRUE;
ctx->ctx = aglCreateContext(pf, NULL);
if (NULL == ctx->ctx || AGL_NO_ERROR != aglGetError()) return GL_TRUE;
aglDestroyPixelFormat(pf);
/*aglSetDrawable(ctx, GetWindowPort(wnd));*/
ctx->octx = aglGetCurrentContext();
if (GL_FALSE == aglSetCurrentContext(ctx->ctx)) return GL_TRUE;
return GL_FALSE;
}
void DestroyContext (GLContext* ctx)
{
if (NULL == ctx) return;
aglSetCurrentContext(ctx->octx);
if (NULL != ctx->ctx) aglDestroyContext(ctx->ctx);
}
/* ------------------------------------------------------------------------ */
#else /* __UNIX || (__APPLE__ && GLEW_APPLE_GLX) */
void InitContext (GLContext* ctx)
{
ctx->dpy = NULL;
ctx->vi = NULL;
ctx->ctx = NULL;
ctx->wnd = 0;
ctx->cmap = 0;
}
GLboolean CreateContext (GLContext* ctx)
{
int attrib[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
int erb, evb;
XSetWindowAttributes swa;
/* check input */
if (NULL == ctx) return GL_TRUE;
/* open display */
ctx->dpy = XOpenDisplay(display);
if (NULL == ctx->dpy) return GL_TRUE;
/* query for glx */
if (!glXQueryExtension(ctx->dpy, &erb, &evb)) return GL_TRUE;
/* choose visual */
ctx->vi = glXChooseVisual(ctx->dpy, DefaultScreen(ctx->dpy), attrib);
if (NULL == ctx->vi) return GL_TRUE;
/* create context */
ctx->ctx = glXCreateContext(ctx->dpy, ctx->vi, None, True);
if (NULL == ctx->ctx) return GL_TRUE;
/* create window */
/*wnd = XCreateSimpleWindow(dpy, RootWindow(dpy, vi->screen), 0, 0, 1, 1, 1, 0, 0);*/
ctx->cmap = XCreateColormap(ctx->dpy, RootWindow(ctx->dpy, ctx->vi->screen),
ctx->vi->visual, AllocNone);
swa.border_pixel = 0;
swa.colormap = ctx->cmap;
ctx->wnd = XCreateWindow(ctx->dpy, RootWindow(ctx->dpy, ctx->vi->screen),
0, 0, 1, 1, 0, ctx->vi->depth, InputOutput, ctx->vi->visual,
CWBorderPixel | CWColormap, &swa);
/* make context current */
if (!glXMakeCurrent(ctx->dpy, ctx->wnd, ctx->ctx)) return GL_TRUE;
return GL_FALSE;
}
void DestroyContext (GLContext* ctx)
{
if (NULL != ctx->dpy && NULL != ctx->ctx) glXDestroyContext(ctx->dpy, ctx->ctx);
if (NULL != ctx->dpy && 0 != ctx->wnd) XDestroyWindow(ctx->dpy, ctx->wnd);
if (NULL != ctx->dpy && 0 != ctx->cmap) XFreeColormap(ctx->dpy, ctx->cmap);
if (NULL != ctx->vi) XFree(ctx->vi);
if (NULL != ctx->dpy) XCloseDisplay(ctx->dpy);
}
#endif /* __UNIX || (__APPLE__ && GLEW_APPLE_GLX) */
GLboolean ParseArgs (int argc, char** argv)
{
int p = 0;
while (p < argc)
{
#if defined(_WIN32)
if (!strcmp(argv[p], "-pf") || !strcmp(argv[p], "-pixelformat"))
{
if (++p >= argc) return GL_TRUE;
display = NULL;
visual = strtol(argv[p], NULL, 0);
}
else if (!strcmp(argv[p], "-a"))
{
showall = 1;
}
else if (!strcmp(argv[p], "-s"))
{
displaystdout = 1;
}
else if (!strcmp(argv[p], "-h"))
{
return GL_TRUE;
}
else
return GL_TRUE;
#else
if (!strcmp(argv[p], "-display"))
{
if (++p >= argc) return GL_TRUE;
display = argv[p];
}
else if (!strcmp(argv[p], "-visual"))
{
if (++p >= argc) return GL_TRUE;
visual = (int)strtol(argv[p], NULL, 0);
}
else if (!strcmp(argv[p], "-h"))
{
return GL_TRUE;
}
else
return GL_TRUE;
#endif
p++;
}
return GL_FALSE;
}
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