+
+// general GL functions
+
+void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+
+void (GLAPIENTRY *qglClear)(GLbitfield mask);
+
+//void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
+void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
+void (GLAPIENTRY *qglCullFace)(GLenum mode);
+
+void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
+void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
+void (GLAPIENTRY *qglEnable)(GLenum cap);
+void (GLAPIENTRY *qglDisable)(GLenum cap);
+//GLboolean GLAPIENTRY *qglIsEnabled)(GLenum cap);
+
+void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
+void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
+
+//void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
+//void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
+//void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
+void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
+
+GLenum (GLAPIENTRY *qglGetError)(void);
+const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
+void (GLAPIENTRY *qglFinish)(void);
+void (GLAPIENTRY *qglFlush)(void);
+
+void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
+void (GLAPIENTRY *qglDepthFunc)(GLenum func);
+void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
+void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
+
+void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
+void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
+void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+//void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
+void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+void (GLAPIENTRY *qglArrayElement)(GLint i);
+
+void (GLAPIENTRY *qglColor4ub)(GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha);
+void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
+void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
+void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
+void (GLAPIENTRY *qglBegin)(GLenum mode);
+void (GLAPIENTRY *qglEnd)(void);
+
+void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
+void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
+void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
+void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
+//void (GLAPIENTRY *qglPushMatrix)(void);
+//void (GLAPIENTRY *qglPopMatrix)(void);
+void (GLAPIENTRY *qglLoadIdentity)(void);
+//void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
+//void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
+//void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
+//void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
+//void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
+void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
+//void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
+//void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
+//void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
+void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
+
+void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
+
+//void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
+//void (GLAPIENTRY *qglStencilMask)(GLuint mask);
+//void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
+//void (GLAPIENTRY *qglClearStencil)(GLint s);
+
+//void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
+void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
+
+//void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
+void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
+
+void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
+void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
+void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
+void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
+
+void (GLAPIENTRY *qglDrawRangeElementsEXT)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
+
+//void (GLAPIENTRY *qglColorTableEXT)(int, int, int, int, int, const void *);
+
+#if WIN32
+int (WINAPI *qwglChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
+int (WINAPI *qwglDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);
+//int (WINAPI *qwglGetPixelFormat)(HDC);
+BOOL (WINAPI *qwglSetPixelFormat)(HDC, int, CONST PIXELFORMATDESCRIPTOR *);
+BOOL (WINAPI *qwglSwapBuffers)(HDC);
+HGLRC (WINAPI *qwglCreateContext)(HDC);
+BOOL (WINAPI *qwglDeleteContext)(HGLRC);
+PROC (WINAPI *qwglGetProcAddress)(LPCSTR);
+BOOL (WINAPI *qwglMakeCurrent)(HDC, HGLRC);
+//BOOL (WINAPI *qwglSwapIntervalEXT)(int interval);
+#endif
+
+
+typedef struct
+{
+ char *name;
+ void **funcvariable;
+}
+gl_extensionfunctionlist_t;
+
+typedef struct
+{
+ char *name;
+ gl_extensionfunctionlist_t *funcs;
+ int *enablevariable;
+ char *disableparm;
+}
+gl_extensioninfo_t;
+
+#if WIN32
+static gl_extensionfunctionlist_t wglfuncs[] =
+{
+ {"wglChoosePixelFormat", (void **) &qwglChoosePixelFormat},
+ {"wglDescribePixelFormat", (void **) &qwglDescribePixelFormat},
+// {"wglGetPixelFormat", (void **) &qwglGetPixelFormat},
+ {"wglSetPixelFormat", (void **) &qwglSetPixelFormat},
+ {"wglSwapBuffers", (void **) &qwglSwapBuffers},
+ {"wglCreateContext", (void **) &qwglCreateContext},
+ {"wglDeleteContext", (void **) &qwglDeleteContext},
+ {"wglGetProcAddress", (void **) &qwglGetProcAddress},
+ {"wglMakeCurrent", (void **) &qwglMakeCurrent},
+ {NULL, NULL}
+};
+
+/*
+static gl_extensionfunctionlist_t wglswapintervalfuncs[] =
+{
+ {"wglSwapIntervalEXT", (void **) &qwglSwapIntervalEXT},
+ {NULL, NULL}
+};
+*/
+#endif
+
+static gl_extensionfunctionlist_t opengl110funcs[] =
+{
+ {"glClearColor", (void **) &qglClearColor},
+ {"glClear", (void **) &qglClear},
+// {"glAlphaFunc", (void **) &qglAlphaFunc},
+ {"glBlendFunc", (void **) &qglBlendFunc},
+ {"glCullFace", (void **) &qglCullFace},
+ {"glDrawBuffer", (void **) &qglDrawBuffer},
+ {"glReadBuffer", (void **) &qglReadBuffer},
+ {"glEnable", (void **) &qglEnable},
+ {"glDisable", (void **) &qglDisable},
+// {"glIsEnabled", (void **) &qglIsEnabled},
+ {"glEnableClientState", (void **) &qglEnableClientState},
+ {"glDisableClientState", (void **) &qglDisableClientState},
+// {"glGetBooleanv", (void **) &qglGetBooleanv},
+// {"glGetDoublev", (void **) &qglGetDoublev},
+// {"glGetFloatv", (void **) &qglGetFloatv},
+ {"glGetIntegerv", (void **) &qglGetIntegerv},
+ {"glGetError", (void **) &qglGetError},
+ {"glGetString", (void **) &qglGetString},
+ {"glFinish", (void **) &qglFinish},
+ {"glFlush", (void **) &qglFlush},
+ {"glClearDepth", (void **) &qglClearDepth},
+ {"glDepthFunc", (void **) &qglDepthFunc},
+ {"glDepthMask", (void **) &qglDepthMask},
+ {"glDepthRange", (void **) &qglDepthRange},
+ {"glDrawElements", (void **) &qglDrawElements},
+ {"glVertexPointer", (void **) &qglVertexPointer},
+// {"glNormalPointer", (void **) &qglNormalPointer},
+ {"glColorPointer", (void **) &qglColorPointer},
+ {"glTexCoordPointer", (void **) &qglTexCoordPointer},
+ {"glArrayElement", (void **) &qglArrayElement},
+ {"glColor4ub", (void **) &qglColor4ub},
+ {"glTexCoord2f", (void **) &qglTexCoord2f},
+ {"glVertex2f", (void **) &qglVertex2f},
+ {"glVertex3f", (void **) &qglVertex3f},
+ {"glBegin", (void **) &qglBegin},
+ {"glEnd", (void **) &qglEnd},
+ {"glMatrixMode", (void **) &qglMatrixMode},
+ {"glOrtho", (void **) &qglOrtho},
+ {"glFrustum", (void **) &qglFrustum},
+ {"glViewport", (void **) &qglViewport},
+// {"glPushMatrix", (void **) &qglPushMatrix},
+// {"glPopMatrix", (void **) &qglPopMatrix},
+ {"glLoadIdentity", (void **) &qglLoadIdentity},
+// {"glLoadMatrixd", (void **) &qglLoadMatrixd},
+// {"glLoadMatrixf", (void **) &qglLoadMatrixf},
+// {"glMultMatrixd", (void **) &qglMultMatrixd},
+// {"glMultMatrixf", (void **) &qglMultMatrixf},
+// {"glRotated", (void **) &qglRotated},
+ {"glRotatef", (void **) &qglRotatef},
+// {"glScaled", (void **) &qglScaled},
+// {"glScalef", (void **) &qglScalef},
+// {"glTranslated", (void **) &qglTranslated},
+ {"glTranslatef", (void **) &qglTranslatef},
+ {"glReadPixels", (void **) &qglReadPixels},
+// {"glStencilFunc", (void **) &qglStencilFunc},
+// {"glStencilMask", (void **) &qglStencilMask},
+// {"glStencilOp", (void **) &qglStencilOp},
+// {"glClearStencil", (void **) &qglClearStencil},
+// {"glTexEnvf", (void **) &qglTexEnvf},
+ {"glTexEnvi", (void **) &qglTexEnvi},
+// {"glTexParameterf", (void **) &qglTexParameterf},
+ {"glTexParameteri", (void **) &qglTexParameteri},
+ {"glBindTexture", (void **) &qglBindTexture},
+ {"glTexImage2D", (void **) &qglTexImage2D},
+ {"glTexSubImage2D", (void **) &qglTexSubImage2D},
+ {"glDeleteTextures", (void **) &qglDeleteTextures},
+ {NULL, NULL}
+};
+
+static gl_extensionfunctionlist_t drawrangeelementsfuncs[] =
+{
+ {"glDrawRangeElements", (void **) &qglDrawRangeElements},
+ {NULL, NULL}
+};
+
+static gl_extensionfunctionlist_t drawrangeelementsextfuncs[] =
+{
+ {"glDrawRangeElementsEXT", (void **) &qglDrawRangeElementsEXT},
+ {NULL, NULL}
+};
+
+static gl_extensionfunctionlist_t multitexturefuncs[] =
+{
+ {"glMultiTexCoord2fARB", (void **) &qglMultiTexCoord2f},
+ {"glActiveTextureARB", (void **) &qglActiveTexture},
+ {"glClientActiveTextureARB", (void **) &qglClientActiveTexture},
+ {NULL, NULL}
+};
+
+static gl_extensionfunctionlist_t compiledvertexarrayfuncs[] =
+{
+ {"glLockArraysEXT", (void **) &qglLockArraysEXT},
+ {"glUnlockArraysEXT", (void **) &qglUnlockArraysEXT},
+ {NULL, NULL}
+};
+
+#ifndef WIN32
+#include <dlfcn.h>
+#endif
+
+#ifdef WIN32
+static HINSTANCE gldll;
+#else
+static void *prjobj = NULL;
+#endif
+
+static void gl_getfuncs_begin(void)
+{
+#ifdef WIN32
+ gldll = LoadLibrary("opengl32.dll");
+#else
+ if (prjobj)
+ dlclose(prjobj);
+
+ prjobj = dlopen(NULL, RTLD_LAZY);
+ if (prjobj == NULL)
+ {
+ Con_Printf("Unable to open symbol list for main program.\n");
+ return;
+ }
+#endif
+}
+
+static void gl_getfuncs_end(void)
+{
+#ifdef WIN32
+ FreeLibrary(gldll);
+#else
+ if (prjobj)
+ dlclose(prjobj);
+ prjobj = NULL;
+#endif
+}
+
+static void *gl_getfuncaddress(char *name)
+{
+ void *p = NULL;
+#ifdef WIN32
+ if (qwglGetProcAddress != NULL)
+ p = (void *) qwglGetProcAddress(name);
+ if (p == NULL)
+ p = (void *) GetProcAddress(gldll, name);
+#else
+ p = (void *) dlsym(prjobj, name);
+#endif
+ return p;
+}
+
+static int gl_checkextension(char *name, gl_extensionfunctionlist_t *funcs, char *disableparm, int silent)
+{
+ int failed = false;
+ gl_extensionfunctionlist_t *func;
+
+ Con_Printf("checking for %s... ", name);
+
+ for (func = funcs;func && func->name;func++)
+ *func->funcvariable = NULL;
+
+ if (disableparm && COM_CheckParm(disableparm))
+ {
+ Con_Printf("disabled by commandline\n");
+ return false;
+ }
+
+ if (strncmp(name, "GL_", 3) || strstr(gl_extensions, name))
+ {
+ for (func = funcs;func && func->name != NULL;func++)
+ {
+ // functions are cleared before all the extensions are evaluated
+ if (!(*func->funcvariable = (void *) gl_getfuncaddress(func->name)))
+ {
+ if (!silent)
+ Con_Printf("missing function \"%s\" - broken driver!\n", func->name);
+ failed = true;
+ }
+ }
+ // delay the return so it prints all missing functions
+ if (failed)
+ return false;
+ Con_Printf("enabled\n");
+ return true;
+ }
+ else
+ {
+ Con_Printf("not detected\n");
+ return false;
+ }
+}
+
+void VID_CheckExtensions(void)
+{
+ Con_Printf("Checking OpenGL extensions...\n");
+
+ gl_getfuncs_begin();
+
+ gl_combine_extension = false;
+ gl_supportslockarrays = false;
+ gl_textureunits = 1;
+
+#if WIN32
+ if (!gl_checkextension("wgl", wglfuncs, NULL, false))
+ Sys_Error("wgl functions not found\n");
+ //gl_checkextension("wglSwapIntervalEXT", wglswapintervalfuncs, NULL, false);
+#endif
+
+ if (!gl_checkextension("OpenGL 1.1.0", opengl110funcs, NULL, false))
+ Sys_Error("OpenGL 1.1.0 functions not found\n");
+
+ if (gl_checkextension("glDrawRangeElements", drawrangeelementsfuncs, "-nodrawrangeelements", true)
+ || gl_checkextension("GL_EXT_draw_range_elements", drawrangeelementsextfuncs, "-nodrawrangeelements", true))
+ {
+ qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
+ qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
+
+ if (gl_maxdrawrangeelementsvertices < 1 || gl_maxdrawrangeelementsindices < 1)
+ {
+ Con_Printf("invalid GL_MAX_ELEMENTS_VERTICES (%i) and/or GL_MAX_ELEMENTS_INDICES (%i)\n", gl_maxdrawrangeelementsvertices, gl_maxdrawrangeelementsindices);
+ qglDrawRangeElements = qglDrawRangeElementsEXT = NULL;
+ }
+ }
+
+ if (gl_checkextension("GL_ARB_multitexture", multitexturefuncs, "-nomtex", false))
+ {
+ qglGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_textureunits);
+ if (gl_textureunits > 1)
+ gl_combine_extension = gl_checkextension("GL_ARB_texture_env_combine", NULL, "-nocombine", false) || gl_checkextension("GL_EXT_texture_env_combine", NULL, "-nocombine", false);
+ else
+ {
+ Con_Printf("GL_ARB_multitexture with less than 2 units? - BROKEN DRIVER!\n");
+ gl_textureunits = 1; // for sanity sake, make sure it's not 0
+ }
+ }
+
+ gl_supportslockarrays = gl_checkextension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva", false);
+
+ gl_getfuncs_end();
+
+ // we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code
+ if (qglDrawRangeElements == NULL)
+ qglDrawRangeElements = qglDrawRangeElementsEXT;
+}
+
+void Force_CenterView_f (void)
+{
+ cl.viewangles[PITCH] = 0;
+}
+
+void IN_PreMove(void)
+{
+}
+
+void CL_AdjustAngles(void);
+void IN_PostMove(void)
+{
+ // clamp after the move as well to prevent messed up rendering angles
+ CL_AdjustAngles();
+}
+
+void IN_Mouse(usercmd_t *cmd, float mx, float my)
+{
+ int mouselook = (in_mlook.state & 1) || freelook.integer;
+ float mouse_x, mouse_y;
+ static float old_mouse_x = 0, old_mouse_y = 0;
+
+ if (m_filter.integer)
+ {
+ mouse_x = (mx + old_mouse_x) * 0.5;
+ mouse_y = (my + old_mouse_y) * 0.5;
+ }
+ else
+ {
+ mouse_x = mx;
+ mouse_y = my;
+ }
+
+ old_mouse_x = mx;
+ old_mouse_y = my;
+
+ // LordHavoc: viewzoom affects mouse sensitivity for sniping
+ mouse_x *= sensitivity.value * cl.viewzoom;
+ mouse_y *= sensitivity.value * cl.viewzoom;
+
+ // Add mouse X/Y movement to cmd
+ if ((in_strafe.state & 1) || (lookstrafe.integer && mouselook))
+ cmd->sidemove += m_side.value * mouse_x;
+ else
+ cl.viewangles[YAW] -= m_yaw.value * mouse_x;
+
+ if (mouselook)
+ V_StopPitchDrift();
+
+ if (mouselook && !(in_strafe.state & 1))
+ cl.viewangles[PITCH] += m_pitch.value * mouse_y;
+ else
+ {
+ if ((in_strafe.state & 1) && noclip_anglehack)
+ cmd->upmove -= m_forward.value * mouse_y;
+ else
+ cmd->forwardmove -= m_forward.value * mouse_y;
+ }
+}
+
+void VID_InitCvars(void)