rewrote memory system entirely (hunk, cache, and zone are gone, memory pools replaced...

[xonotic/darkplaces.git] / vid_shared.c

diff --git a/vid_shared.c b/vid_shared.c
index 7cea963981ec615187b00c49f9de4964c5c099d6..f5ec2f6eb9387740cc6bca23439587796103fd88 100644 (file)
--- a/vid_shared.c
+++ b/vid_shared.c
@@ -5,24 +5,168 @@
 qboolean isG200 = false; // LordHavoc: the Matrox G200 can't do per pixel alpha, and it uses a D3D driver for GL... ugh...
 qboolean isRagePro = false; // LordHavoc: the ATI Rage Pro has limitations with per pixel alpha (the color scaler does not apply to per pixel alpha images...), although not as bad as a G200.
 
-// LordHavoc: compiled vertex array support
-qboolean gl_supportslockarrays = false;
-// LordHavoc: ARB multitexture support
-qboolean gl_mtexable = false;
-int gl_mtex_enum = 0;
-
-cvar_t vid_mode = {"vid_mode", "0", false};
-cvar_t vid_mouse = {"vid_mouse", "1", true};
-cvar_t vid_fullscreen = {"vid_fullscreen", "1"};
-
-void (GLAPIENTRY *qglMTexCoord2f) (GLenum, GLfloat, GLfloat);
-void (GLAPIENTRY *qglSelectTexture) (GLenum);
+// LordHavoc: GL_ARB_multitexture support
+int gl_textureunits;
+// LordHavoc: GL_ARB_texture_env_combine or GL_EXT_texture_env_combine support
+int gl_combine_extension = false;
+// LordHavoc: GL_EXT_compiled_vertex_array support
+int gl_supportslockarrays = false;
+
+cvar_t vid_mode = {0, "vid_mode", "0"};
+cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1"};
+cvar_t vid_fullscreen = {0, "vid_fullscreen", "1"};
+cvar_t gl_combine = {0, "gl_combine", "1"};
+
+// GL_ARB_multitexture
+void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
+void (GLAPIENTRY *qglActiveTexture) (GLenum);
+void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
+
+// GL_EXT_compiled_vertex_array
 void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
 void (GLAPIENTRY *qglUnlockArraysEXT) (void);
 
+typedef struct
+{
+       char *name;
+       void **funcvariable;
+}
+gl_extensionfunctionlist_t;
+
+typedef struct
+{
+       char *name;
+       gl_extensionfunctionlist_t *funcs;
+       int *enablevariable;
+       char *disableparm;
+}
+gl_extensioninfo_t;
+
+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
+
+static void *prjobj = NULL;
+
+static void gl_getfuncs_begin(void)
+{
+#ifndef WIN32
+       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)
+{
+#ifndef WIN32
+       if (prjobj)
+       {
+               dlclose(prjobj);
+               prjobj = NULL;
+       }
+#endif
+}
+
+static void *gl_getfuncaddress(char *name)
+{
+#ifdef WIN32
+       return (void *) wglGetProcAddress(func->name);
+#else
+       return (void *) dlsym(prjobj, name);
+#endif
+}
+
+static int gl_checkextension(char *name, gl_extensionfunctionlist_t *funcs, char *disableparm)
+{
+       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 (strstr(gl_extensions, name))
+       {
+               for (func = funcs;func && func->name != NULL;func++)
+               {
+                       if (!(*func->funcvariable = (void *) gl_getfuncaddress(func->name)))
+                       {
+                               Con_Printf("missing function \"%s\"!\n", func->name);
+                               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 (gl_checkextension("GL_ARB_multitexture", multitexturefuncs, "-nomtex"))
+       {
+               glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_textureunits);
+               if (gl_textureunits > 1)
+                       gl_combine_extension = gl_checkextension("GL_ARB_texture_env_combine", NULL, "-nocombine") || gl_checkextension("GL_EXT_texture_env_combine", NULL, "-nocombine");
+               else
+                       gl_textureunits = 1; // for sanity sake, make sure it's not 0
+       }
+
+       gl_supportslockarrays = gl_checkextension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva");
+
+       gl_getfuncs_end();
+}
+
+void Force_CenterView_f (void)
+{
+       cl.viewangles[PITCH] = 0;
+}
+
 void VID_InitCvars(void)
 {
        Cvar_RegisterVariable(&vid_mode);
        Cvar_RegisterVariable(&vid_mouse);
        Cvar_RegisterVariable(&vid_fullscreen);
+       Cvar_RegisterVariable(&gl_combine);
+       Cmd_AddCommand("force_centerview", Force_CenterView_f);
 }