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/* Window-specific OpenGL functions implementation.
*
* Copyright (c) 1999 Lionel Ulmer
* Copyright (c) 2005 Raphael Junqueira
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winerror.h"
#include "winreg.h"
#include "wingdi.h"
#include "winternl.h"
#include "winnt.h"
#include "opengl_ext.h"
#ifdef HAVE_GL_GLU_H
#undef far
#undef near
#include <GL/glu.h>
#endif
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wgl);
WINE_DECLARE_DEBUG_CHANNEL(opengl);
typedef struct wine_wgl_s {
PROC WINAPI (*p_wglGetProcAddress)(LPCSTR lpszProc);
void WINAPI (*p_wglGetIntegerv)(GLenum pname, GLint* params);
} wine_wgl_t;
/** global wgl object */
static wine_wgl_t wine_wgl;
/* x11drv GDI escapes */
#define X11DRV_ESCAPE 6789
enum x11drv_escape_codes
{
X11DRV_GET_DISPLAY, /* get X11 display for a DC */
X11DRV_GET_DRAWABLE, /* get current drawable for a DC */
X11DRV_GET_FONT, /* get current X font for a DC */
X11DRV_SET_DRAWABLE, /* set current drawable for a DC */
X11DRV_START_EXPOSURES, /* start graphics exposures */
X11DRV_END_EXPOSURES, /* end graphics exposures */
X11DRV_GET_DCE, /* get the DCE pointer */
X11DRV_SET_DCE, /* set the DCE pointer */
X11DRV_GET_GLX_DRAWABLE, /* get current glx drawable for a DC */
X11DRV_SYNC_PIXMAP /* sync the dibsection to its pixmap */
};
void (*wine_tsx11_lock_ptr)(void) = NULL;
void (*wine_tsx11_unlock_ptr)(void) = NULL;
static HMODULE opengl32_handle;
static char internal_gl_disabled_extensions[512];
static char* internal_gl_extensions = NULL;
typedef struct wine_glcontext {
HDC hdc;
Display *display;
XVisualInfo *vis;
GLXFBConfig fb_conf;
GLXContext ctx;
BOOL do_escape;
struct wine_glcontext *next;
struct wine_glcontext *prev;
} Wine_GLContext;
void enter_gl(void)
{
Wine_GLContext *curctx = (Wine_GLContext *) NtCurrentTeb()->glContext;
if (curctx && curctx->do_escape)
{
enum x11drv_escape_codes escape = X11DRV_SYNC_PIXMAP;
ExtEscape(curctx->hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape, 0, NULL);
}
wine_tsx11_lock_ptr();
return;
}
/***********************************************************************
* wglCreateLayerContext (OPENGL32.@)
*/
HGLRC WINAPI wglCreateLayerContext(HDC hdc,
int iLayerPlane) {
TRACE("(%p,%d)\n", hdc, iLayerPlane);
if (iLayerPlane == 0) {
return wglCreateContext(hdc);
}
FIXME(" no handler for layer %d\n", iLayerPlane);
return NULL;
}
/***********************************************************************
* wglCopyContext (OPENGL32.@)
*/
BOOL WINAPI wglCopyContext(HGLRC hglrcSrc,
HGLRC hglrcDst,
UINT mask) {
FIXME("(%p,%p,%d)\n", hglrcSrc, hglrcDst, mask);
return FALSE;
}
/***********************************************************************
* wglDescribeLayerPlane (OPENGL32.@)
*/
BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
int iPixelFormat,
int iLayerPlane,
UINT nBytes,
LPLAYERPLANEDESCRIPTOR plpd) {
FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
return FALSE;
}
/***********************************************************************
* wglGetLayerPaletteEntries (OPENGL32.@)
*/
int WINAPI wglGetLayerPaletteEntries(HDC hdc,
int iLayerPlane,
int iStart,
int cEntries,
const COLORREF *pcr) {
FIXME("(): stub !\n");
return 0;
}
static int compar(const void *elt_a, const void *elt_b) {
return strcmp(((const OpenGL_extension *) elt_a)->name,
((const OpenGL_extension *) elt_b)->name);
}
/* Check if a GL extension is supported */
static BOOL is_extension_supported(const char* extension)
{
const char *gl_ext_string = (const char*)internal_glGetString(GL_EXTENSIONS);
TRACE("Checking for extension '%s'\n", extension);
if(!gl_ext_string) {
ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
return FALSE;
}
/* We use the GetProcAddress function from the display driver to retrieve function pointers
* for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
* using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
* require the function to return NULL when a extension isn't found. For this reason we check
* if the OpenGL extension required for the function we are looking up is supported. */
/* Check if the extension is part of the GL extension string to see if it is supported. */
if(strstr(gl_ext_string, extension) != NULL)
return TRUE;
/* In general an OpenGL function starts as an ARB/EXT extension and at some stage
* it becomes part of the core OpenGL library and can be reached without the ARB/EXT
* suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
* Check if we are searching for a core GL function */
if(strncmp(extension, "GL_VERSION_", 11) == 0)
{
const GLubyte *gl_version = glGetString(GL_VERSION);
const const char *version = extension + 11; /* Move past 'GL_VERSION_' */
if(!gl_version) {
ERR("Error no OpenGL version found,\n");
return FALSE;
}
/* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
* The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
return TRUE;
}
WARN("The function requires OpenGL version '%c.%c' while your drivers only provide '%c.%c'\n", version[0], version[2], gl_version[0], gl_version[2]);
}
return FALSE;
}
/***********************************************************************
* wglGetProcAddress (OPENGL32.@)
*/
PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
void *local_func;
OpenGL_extension ext;
const OpenGL_extension *ext_ret;
TRACE("(%s)\n", lpszProc);
/* First, look if it's not already defined in the 'standard' OpenGL functions */
if ((local_func = GetProcAddress(opengl32_handle, lpszProc)) != NULL) {
TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
return local_func;
}
/* After that, search in the thunks to find the real name of the extension */
ext.name = lpszProc;
ext_ret = (const OpenGL_extension *) bsearch(&ext, extension_registry,
extension_registry_size, sizeof(OpenGL_extension), compar);
/* If nothing was found, we are looking for a WGL extension */
if (ext_ret == NULL) {
WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
return wine_wgl.p_wglGetProcAddress(lpszProc);
} else { /* We are looking for an OpenGL extension */
/* Check if the GL extension required by the function is available */
if(!is_extension_supported(ext_ret->extension)) {
WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
return NULL;
}
local_func = wine_wgl.p_wglGetProcAddress(ext_ret->name);
/* After that, look at the extensions defined in the Linux OpenGL library */
if (local_func == NULL) {
char buf[256];
void *ret = NULL;
/* Remove the 3 last letters (EXT, ARB, ...).
I know that some extensions have more than 3 letters (MESA, NV,
INTEL, ...), but this is only a stop-gap measure to fix buggy
OpenGL drivers (moreover, it is only useful for old 1.0 apps
that query the glBindTextureEXT extension).
*/
memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
buf[strlen(ext_ret->name) - 3] = '\0';
TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
ret = GetProcAddress(opengl32_handle, buf);
if (ret != NULL) {
TRACE(" found function in main OpenGL library (%p) !\n", ret);
} else {
WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->name);
}
return ret;
} else {
TRACE(" returning function (%p)\n", ext_ret->func);
extension_funcs[ext_ret - extension_registry] = local_func;
return ext_ret->func;
}
}
}
/***********************************************************************
* wglRealizeLayerPalette (OPENGL32.@)
*/
BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
int iLayerPlane,
BOOL bRealize) {
FIXME("()\n");
return FALSE;
}
/***********************************************************************
* wglSetLayerPaletteEntries (OPENGL32.@)
*/
int WINAPI wglSetLayerPaletteEntries(HDC hdc,
int iLayerPlane,
int iStart,
int cEntries,
const COLORREF *pcr) {
FIXME("(): stub !\n");
return 0;
}
/***********************************************************************
* wglSwapLayerBuffers (OPENGL32.@)
*/
BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
UINT fuPlanes) {
TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
if (!SwapBuffers(hdc)) return FALSE;
fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
}
if (fuPlanes) {
WARN("Following layers unhandled : %08x\n", fuPlanes);
}
return TRUE;
}
#ifdef HAVE_GL_GLU_H
static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
{
vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
vertex[2] = 0.0;
}
static void tess_callback_vertex(GLvoid *vertex)
{
GLdouble *dbl = vertex;
TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
glVertex3dv(vertex);
}
static void tess_callback_begin(GLenum which)
{
TRACE("%d\n", which);
glBegin(which);
}
static void tess_callback_end(void)
{
TRACE("\n");
glEnd();
}
/***********************************************************************
* wglUseFontOutlines_common
*/
BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf,
BOOL unicode)
{
UINT glyph;
const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
GLUtesselator *tess;
LOGFONTW lf;
HFONT old_font, unscaled_font;
UINT em_size = 1024;
RECT rc;
TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
ENTER_GL();
tess = gluNewTess();
if(tess)
{
gluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
gluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
gluTessCallback(tess, GLU_TESS_END, tess_callback_end);
}
LEAVE_GL();
if(!tess) return FALSE;
GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
rc.left = rc.right = rc.bottom = 0;
rc.top = em_size;
DPtoLP(hdc, (POINT*)&rc, 2);
lf.lfHeight = -abs(rc.top - rc.bottom);
lf.lfOrientation = lf.lfEscapement = 0;
unscaled_font = CreateFontIndirectW(&lf);
old_font = SelectObject(hdc, unscaled_font);
for (glyph = first; glyph < first + count; glyph++)
{
DWORD needed;
GLYPHMETRICS gm;
BYTE *buf;
TTPOLYGONHEADER *pph;
TTPOLYCURVE *ppc;
GLdouble *vertices;
if(unicode)
needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
else
needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
if(needed == GDI_ERROR)
goto error;
buf = HeapAlloc(GetProcessHeap(), 0, needed);
vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
if(unicode)
GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
else
GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
TRACE("glyph %d\n", glyph);
if(lpgmf)
{
lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
lpgmf++;
}
ENTER_GL();
glNewList(listBase++, GL_COMPILE);
gluTessBeginPolygon(tess, NULL);
pph = (TTPOLYGONHEADER*)buf;
while((BYTE*)pph < buf + needed)
{
TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
gluTessBeginContour(tess);
fixed_to_double(pph->pfxStart, em_size, vertices);
gluTessVertex(tess, vertices, vertices);
vertices += 3;
ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
while((char*)ppc < (char*)pph + pph->cb)
{
int i;
switch(ppc->wType) {
case TT_PRIM_LINE:
for(i = 0; i < ppc->cpfx; i++)
{
TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
fixed_to_double(ppc->apfx[i], em_size, vertices);
gluTessVertex(tess, vertices, vertices);
vertices += 3;
}
break;
case TT_PRIM_QSPLINE:
for(i = 0; i < ppc->cpfx/2; i++)
{
/* FIXME just connecting the control points for now */
TRACE("\t\tcurve %d,%d %d,%d\n",
ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
gluTessVertex(tess, vertices, vertices);
vertices += 3;
fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
gluTessVertex(tess, vertices, vertices);
vertices += 3;
}
break;
default:
ERR("\t\tcurve type = %d\n", ppc->wType);
gluTessEndContour(tess);
goto error_in_list;
}
ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
(ppc->cpfx - 1) * sizeof(POINTFX));
}
gluTessEndContour(tess);
pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
}
error_in_list:
gluTessEndPolygon(tess);
glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
glEndList();
LEAVE_GL();
HeapFree(GetProcessHeap(), 0, buf);
HeapFree(GetProcessHeap(), 0, vertices);
}
error:
DeleteObject(SelectObject(hdc, old_font));
gluDeleteTess(tess);
return TRUE;
}
#else /* HAVE_GL_GLU_H */
BOOL WINAPI wglUseFontOutlines_common(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf,
BOOL unicode)
{
FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
return FALSE;
}
#endif /* HAVE_GL_GLU_H */
/***********************************************************************
* wglUseFontOutlinesA (OPENGL32.@)
*/
BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf)
{
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
}
/***********************************************************************
* wglUseFontOutlinesW (OPENGL32.@)
*/
BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf)
{
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
}
const GLubyte * internal_glGetString(GLenum name) {
const char* GL_Extensions = NULL;
if (GL_EXTENSIONS != name) {
return glGetString(name);
}
if (NULL == internal_gl_extensions) {
GL_Extensions = (const char *) glGetString(GL_EXTENSIONS);
TRACE("GL_EXTENSIONS reported:\n");
if (NULL == GL_Extensions) {
ERR("GL_EXTENSIONS returns NULL\n");
return NULL;
} else {
size_t len = strlen(GL_Extensions);
internal_gl_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len + 2);
while (*GL_Extensions != 0x00) {
const char* Start = GL_Extensions;
char ThisExtn[256];
memset(ThisExtn, 0x00, sizeof(ThisExtn));
while (*GL_Extensions != ' ' && *GL_Extensions != 0x00) {
GL_Extensions++;
}
memcpy(ThisExtn, Start, (GL_Extensions - Start));
TRACE("- %s:", ThisExtn);
/* test if supported API is disabled by config */
if (NULL == strstr(internal_gl_disabled_extensions, ThisExtn)) {
strcat(internal_gl_extensions, " ");
strcat(internal_gl_extensions, ThisExtn);
TRACE(" active\n");
} else {
TRACE(" deactived (by config)\n");
}
if (*GL_Extensions == ' ') GL_Extensions++;
}
}
}
return (const GLubyte *) internal_gl_extensions;
}
void internal_glGetIntegerv(GLenum pname, GLint* params) {
TRACE("pname: 0x%x, params %p\n", pname, params);
glGetIntegerv(pname, params);
/* A few parameters like GL_DEPTH_BITS differ between WGL and GLX, the wglGetIntegerv helper function handles those */
wine_wgl.p_wglGetIntegerv(pname, params);
}
/* No need to load any other libraries as according to the ABI, libGL should be self-sufficient and
include all dependencies
*/
#ifndef SONAME_LIBGL
#define SONAME_LIBGL "libGL.so"
#endif
/* This is for brain-dead applications that use OpenGL functions before even
creating a rendering context.... */
static BOOL process_attach(void)
{
HMODULE mod_x11, mod_gdi32;
DWORD size = sizeof(internal_gl_disabled_extensions);
HKEY hkey = 0;
GetDesktopWindow(); /* make sure winex11 is loaded (FIXME) */
mod_x11 = GetModuleHandleA( "winex11.drv" );
mod_gdi32 = GetModuleHandleA( "gdi32.dll" );
if (!mod_x11 || !mod_gdi32)
{
ERR("X11DRV or GDI32 not loaded. Cannot create default context.\n");
return FALSE;
}
wine_tsx11_lock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_lock" );
wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod_x11, "wine_tsx11_unlock" );
wine_wgl.p_wglGetProcAddress = (void *)GetProcAddress(mod_gdi32, "wglGetProcAddress");
/* Interal WGL function */
wine_wgl.p_wglGetIntegerv = (void *)wine_wgl.p_wglGetProcAddress("wglGetIntegerv");
internal_gl_disabled_extensions[0] = 0;
if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey)) {
if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (LPBYTE)internal_gl_disabled_extensions, &size)) {
TRACE("found DisabledExtensions=\"%s\"\n", internal_gl_disabled_extensions);
}
RegCloseKey(hkey);
}
return TRUE;
}
/**********************************************************************/
static void process_detach(void)
{
HeapFree(GetProcessHeap(), 0, internal_gl_extensions);
}
/***********************************************************************
* OpenGL initialisation routine
*/
BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
{
switch(reason)
{
case DLL_PROCESS_ATTACH:
opengl32_handle = hinst;
DisableThreadLibraryCalls(hinst);
return process_attach();
case DLL_PROCESS_DETACH:
process_detach();
break;
}
return TRUE;
}
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