]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - vid_shared.c
removed detection of GL_NV_texture_shader extension which was previously used for...
[xonotic/darkplaces.git] / vid_shared.c
index 6488195178c413a1bad4603eaab6dca52ffcff62..0a8a2d15dca530ac9a631743955dc51b632e21e8 100644 (file)
@@ -15,6 +15,10 @@ qboolean in_client_mouse = true;
 // AK where should it be placed ?
 float in_mouse_x, in_mouse_y;
 
+// value of GL_MAX_TEXTURE_<various>_SIZE
+int gl_max_texture_size = 0;
+int gl_max_3d_texture_size = 0;
+int gl_max_cube_map_texture_size = 0;
 // GL_ARB_multitexture
 int gl_textureunits = 1;
 // GL_ARB_texture_env_combine or GL_EXT_texture_env_combine
@@ -36,8 +40,6 @@ int gl_support_clamptoedge = false;
 // GL_EXT_texture_filter_anisotropic
 int gl_support_anisotropy = false;
 int gl_max_anisotropy = 1;
-// GL_NV_texture_shader
-int gl_textureshader = false;
 // GL_EXT_stencil_two_side
 int gl_support_stenciltwoside = false;
 // GL_ARB_shader_objects
@@ -48,6 +50,8 @@ int gl_support_shading_language_100 = false;
 int gl_support_vertex_shader = false;
 // GL_ARB_fragment_shader
 int gl_support_fragment_shader = false;
+// GL_NV_half_float
+int gl_support_half_float = false;
 
 // LordHavoc: if window is hidden, don't update screen
 qboolean vid_hidden = true;
@@ -56,38 +60,41 @@ qboolean vid_hidden = true;
 qboolean vid_activewindow = true;
 
 // we don't know until we try it!
-cvar_t vid_hardwaregammasupported = {CVAR_READONLY,"vid_hardwaregammasupported","1"};
+cvar_t vid_hardwaregammasupported = {CVAR_READONLY,"vid_hardwaregammasupported","1", "indicates whether hardware gamma is supported (updated by attempts to set hardware gamma ramps)"};
 // whether hardware gamma ramps are currently in effect
 qboolean vid_usinghwgamma = false;
 
 unsigned short vid_gammaramps[768];
 unsigned short vid_systemgammaramps[768];
 
-cvar_t vid_fullscreen = {CVAR_SAVE, "vid_fullscreen", "1"};
-cvar_t vid_width = {CVAR_SAVE, "vid_width", "640"};
-cvar_t vid_height = {CVAR_SAVE, "vid_height", "480"};
-cvar_t vid_bitsperpixel = {CVAR_SAVE, "vid_bitsperpixel", "32"};
-
-cvar_t vid_vsync = {CVAR_SAVE, "vid_vsync", "0"};
-cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1"};
-cvar_t gl_combine = {CVAR_SAVE, "gl_combine", "1"};
-cvar_t gl_finish = {0, "gl_finish", "0"};
-
-cvar_t v_gamma = {CVAR_SAVE, "v_gamma", "1"};
-cvar_t v_contrast = {CVAR_SAVE, "v_contrast", "1"};
-cvar_t v_brightness = {CVAR_SAVE, "v_brightness", "0"};
-cvar_t v_color_enable = {CVAR_SAVE, "v_color_enable", "0"};
-cvar_t v_color_black_r = {CVAR_SAVE, "v_color_black_r", "0"};
-cvar_t v_color_black_g = {CVAR_SAVE, "v_color_black_g", "0"};
-cvar_t v_color_black_b = {CVAR_SAVE, "v_color_black_b", "0"};
-cvar_t v_color_grey_r = {CVAR_SAVE, "v_color_grey_r", "0.5"};
-cvar_t v_color_grey_g = {CVAR_SAVE, "v_color_grey_g", "0.5"};
-cvar_t v_color_grey_b = {CVAR_SAVE, "v_color_grey_b", "0.5"};
-cvar_t v_color_white_r = {CVAR_SAVE, "v_color_white_r", "1"};
-cvar_t v_color_white_g = {CVAR_SAVE, "v_color_white_g", "1"};
-cvar_t v_color_white_b = {CVAR_SAVE, "v_color_white_b", "1"};
-cvar_t v_hwgamma = {CVAR_SAVE, "v_hwgamma", "1"};
-cvar_t v_psycho = {0, "v_psycho", "0"};
+cvar_t vid_fullscreen = {CVAR_SAVE, "vid_fullscreen", "1", "use fullscreen (1) or windowed (0)"};
+cvar_t vid_width = {CVAR_SAVE, "vid_width", "640", "resolution"};
+cvar_t vid_height = {CVAR_SAVE, "vid_height", "480", "resolution"};
+cvar_t vid_bitsperpixel = {CVAR_SAVE, "vid_bitsperpixel", "32", "how many bits per pixel to render at (32 or 16, 32 is recommended)"};
+cvar_t vid_refreshrate = {CVAR_SAVE, "vid_refreshrate", "60", "refresh rate to use, in hz (higher values flicker less, if supported by your monitor)"};
+
+cvar_t vid_vsync = {CVAR_SAVE, "vid_vsync", "0", "sync to vertical blank, prevents 'tearing' (seeing part of one frame and part of another on the screen at the same time), automatically disabled when doing timedemo benchmarks"};
+cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1", "whether to use the mouse in windowed mode (fullscreen always does)"};
+cvar_t vid_minwidth = {0, "vid_minwidth", "0", "minimum vid_width that is acceptable (to be set in default.cfg in mods)"};
+cvar_t vid_minheight = {0, "vid_minheight", "0", "minimum vid_height that is acceptable (to be set in default.cfg in mods)"};
+cvar_t gl_combine = {0, "gl_combine", "1", "faster rendering by using GL_ARB_texture_env_combine extension (part of OpenGL 1.3 and above)"};
+cvar_t gl_finish = {0, "gl_finish", "0", "make the cpu wait for the graphics processor at the end of each frame render (can help with strange input or video lag problems on some machines)"};
+
+cvar_t v_gamma = {CVAR_SAVE, "v_gamma", "1", "inverse gamma correction value, a brightness effect that does not affect white or black, and tends to make the image grey and dull"};
+cvar_t v_contrast = {CVAR_SAVE, "v_contrast", "1", "brightness of white (values above 1 give a brighter image with increased color saturation, unlike v_gamma)"};
+cvar_t v_brightness = {CVAR_SAVE, "v_brightness", "0", "brightness of black, useful for monitors that are too dark"};
+cvar_t v_color_enable = {CVAR_SAVE, "v_color_enable", "0", "enables black-grey-white color correction curve controls"};
+cvar_t v_color_black_r = {CVAR_SAVE, "v_color_black_r", "0", "desired color of black"};
+cvar_t v_color_black_g = {CVAR_SAVE, "v_color_black_g", "0", "desired color of black"};
+cvar_t v_color_black_b = {CVAR_SAVE, "v_color_black_b", "0", "desired color of black"};
+cvar_t v_color_grey_r = {CVAR_SAVE, "v_color_grey_r", "0.5", "desired color of grey"};
+cvar_t v_color_grey_g = {CVAR_SAVE, "v_color_grey_g", "0.5", "desired color of grey"};
+cvar_t v_color_grey_b = {CVAR_SAVE, "v_color_grey_b", "0.5", "desired color of grey"};
+cvar_t v_color_white_r = {CVAR_SAVE, "v_color_white_r", "1", "desired color of white"};
+cvar_t v_color_white_g = {CVAR_SAVE, "v_color_white_g", "1", "desired color of white"};
+cvar_t v_color_white_b = {CVAR_SAVE, "v_color_white_b", "1", "desired color of white"};
+cvar_t v_hwgamma = {CVAR_SAVE, "v_hwgamma", "1", "enables use of hardware gamma correction ramps if available (note: does not work very well on Windows2000 and above)"};
+cvar_t v_psycho = {0, "v_psycho", "0", "easter egg (does not work on Windows2000 or above)"};
 
 // brand of graphics chip
 const char *gl_vendor;
@@ -117,12 +124,6 @@ void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
 void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
 void (GLAPIENTRY *qglUnlockArraysEXT) (void);
 
-//GL_NV_vertex_array_range
-GLvoid *(GLAPIENTRY *qglAllocateMemoryNV)(GLsizei size, GLfloat readFrequency, GLfloat writeFrequency, GLfloat priority);
-GLvoid (GLAPIENTRY *qglFreeMemoryNV)(GLvoid *pointer);
-GLvoid (GLAPIENTRY *qglVertexArrayRangeNV)(GLsizei length, GLvoid *pointer);
-GLvoid (GLAPIENTRY *qglFlushVertexArrayRangeNV)(GLvoid);
-
 // general GL functions
 
 void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
@@ -239,6 +240,10 @@ void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
 
 void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
 
+//[515]: added on 29.07.2005
+void (GLAPIENTRY *qglLineWidth)(GLfloat width);
+void (GLAPIENTRY *qglPointSize)(GLfloat size);
+
 void (GLAPIENTRY *qglActiveStencilFaceEXT)(GLenum);
 
 void (GLAPIENTRY *qglDeleteObjectARB)(GLhandleARB obj);
@@ -411,6 +416,10 @@ static dllfunction_t opengl110funcs[] =
        {"glVertex3f", (void **) &qglVertex3f},
        {"glBegin", (void **) &qglBegin},
        {"glEnd", (void **) &qglEnd},
+//[515]: added on 29.07.2005
+       {"glLineWidth", (void**) &qglLineWidth},
+       {"glPointSize", (void**) &qglPointSize},
+//
        {"glMatrixMode", (void **) &qglMatrixMode},
        {"glOrtho", (void **) &qglOrtho},
        {"glFrustum", (void **) &qglFrustum},
@@ -606,6 +615,9 @@ void VID_CheckExtensions(void)
 
        // reset all the gl extension variables here
        // this should match the declarations
+       gl_max_texture_size = 0;
+       gl_max_3d_texture_size = 0;
+       gl_max_cube_map_texture_size = 0;
        gl_textureunits = 1;
        gl_combine_extension = false;
        gl_supportslockarrays = false;
@@ -615,7 +627,6 @@ void VID_CheckExtensions(void)
        gl_support_clamptoedge = false;
        gl_support_anisotropy = false;
        gl_max_anisotropy = 1;
-       gl_textureshader = false;
        gl_support_stenciltwoside = false;
        gl_support_shader_objects = false;
        gl_support_shading_language_100 = false;
@@ -623,7 +634,7 @@ void VID_CheckExtensions(void)
        gl_support_fragment_shader = false;
 
        if (!GL_CheckExtension("OpenGL 1.1.0", opengl110funcs, NULL, false))
-               Sys_Error("OpenGL 1.1.0 functions not found\n");
+               Sys_Error("OpenGL 1.1.0 functions not found");
 
        Con_Printf("GL_VENDOR: %s\n", gl_vendor);
        Con_Printf("GL_RENDERER: %s\n", gl_renderer);
@@ -631,6 +642,8 @@ void VID_CheckExtensions(void)
        Con_Printf("GL_EXTENSIONS: %s\n", gl_extensions);
        Con_Printf("%s_EXTENSIONS: %s\n", gl_platform, gl_platformextensions);
 
+       qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &gl_max_texture_size);
+
        Con_Print("Checking OpenGL extensions...\n");
 
 // COMMANDLINEOPTION: GL: -nodrawrangeelements disables GL_EXT_draw_range_elements (renders faster)
@@ -649,9 +662,11 @@ void VID_CheckExtensions(void)
        }
 
 // COMMANDLINEOPTION: GL: -notexture3d disables GL_EXT_texture3D (required for spherical lights, otherwise they render as a column)
-       gl_texture3d = GL_CheckExtension("GL_EXT_texture3D", texture3dextfuncs, "-notexture3d", false);
+       if ((gl_texture3d = GL_CheckExtension("GL_EXT_texture3D", texture3dextfuncs, "-notexture3d", false)))
+               qglGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &gl_max_3d_texture_size);
 // COMMANDLINEOPTION: GL: -nocubemap disables GL_ARB_texture_cube_map (required for bumpmapping)
-       gl_texturecubemap = GL_CheckExtension("GL_ARB_texture_cube_map", NULL, "-nocubemap", false);
+       if ((gl_texturecubemap = GL_CheckExtension("GL_ARB_texture_cube_map", NULL, "-nocubemap", false)))
+               qglGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &gl_max_cube_map_texture_size);
 // COMMANDLINEOPTION: GL: -nocva disables GL_EXT_compiled_vertex_array (renders faster)
        gl_supportslockarrays = GL_CheckExtension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva", false);
 // COMMANDLINEOPTION: GL: -noedgeclamp disables GL_EXT_texture_edge_clamp or GL_SGIS_texture_edge_clamp (recommended, some cards do not support the other texture clamp method)
@@ -661,9 +676,6 @@ void VID_CheckExtensions(void)
        if ((gl_support_anisotropy = GL_CheckExtension("GL_EXT_texture_filter_anisotropic", NULL, "-noanisotropy", false)))
                qglGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gl_max_anisotropy);
 
-// COMMANDLINEOPTION: GL: -notextureshader disables GL_NV_texture_shader (required for the Geforce3 water shader, NVIDIA only)
-       gl_textureshader = GL_CheckExtension("GL_NV_texture_shader", NULL, "-notextureshader", false);
-
 // COMMANDLINEOPTION: GL: -nostenciltwoside disables GL_EXT_stencil_two_side (accelerates shadow rendering)
        gl_support_stenciltwoside = GL_CheckExtension("GL_EXT_stencil_two_side", stenciltwosidefuncs, "-nostenciltwoside", false);
 
@@ -673,44 +685,15 @@ void VID_CheckExtensions(void)
 
 // COMMANDLINEOPTION: GL: -noshaderobjects disables GL_ARB_shader_objects (required for vertex shader and fragment shader)
 // COMMANDLINEOPTION: GL: -noshadinglanguage100 disables GL_ARB_shading_language_100 (required for vertex shader and fragment shader)
-// COMMANDLINEOPTION: GL: -novertexshader disables GL_ARB_vertex_shader (currently unused, allows vertex shader effects)
-// COMMANDLINEOPTION: GL: -nofragmentshader disables GL_ARB_fragment_shader (currently unused, allows pixel shader effects)
+// COMMANDLINEOPTION: GL: -novertexshader disables GL_ARB_vertex_shader (allows vertex shader effects)
+// COMMANDLINEOPTION: GL: -nofragmentshader disables GL_ARB_fragment_shader (allows pixel shader effects, can improve per pixel lighting performance and capabilities)
        if ((gl_support_shader_objects = GL_CheckExtension("GL_ARB_shader_objects", shaderobjectsfuncs, "-noshaderobjects", false)))
                if ((gl_support_shading_language_100 = GL_CheckExtension("GL_ARB_shading_language_100", NULL, "-noshadinglanguage100", false)))
                        if ((gl_support_vertex_shader = GL_CheckExtension("GL_ARB_vertex_shader", vertexshaderfuncs, "-novertexshader", false)))
                                gl_support_fragment_shader = GL_CheckExtension("GL_ARB_fragment_shader", NULL, "-nofragmentshader", false);
-}
-
-qboolean vid_vertexarrays_are_var = false;
-void *VID_AllocVertexArrays(mempool_t *pool, int size, int fast, float readfrequency, float writefrequency, float priority)
-{
-       void *m;
-       vid_vertexarrays_are_var = false;
-       if (fast && qglAllocateMemoryNV)
-       {
-               CHECKGLERROR
-               m = qglAllocateMemoryNV(size, readfrequency, writefrequency, priority);
-               CHECKGLERROR
-               if (m)
-               {
-                       vid_vertexarrays_are_var = true;
-                       return m;
-               }
-       }
-       return Mem_Alloc(pool, size);
-}
 
-void VID_FreeVertexArrays(void *pointer)
-{
-       if (vid_vertexarrays_are_var)
-       {
-               CHECKGLERROR
-               qglFreeMemoryNV(pointer);
-               CHECKGLERROR
-       }
-       else
-               Mem_Free(pointer);
-       vid_vertexarrays_are_var = false;
+// COMMANDLINEOPTION: GL: -nohalffloat disables GL_NV_half_float extension
+       gl_support_half_float = GL_CheckExtension("GL_NV_half_float", NULL, "-nohalffloat", false);
 }
 
 void Force_CenterView_f (void)
@@ -877,33 +860,34 @@ void VID_Shared_Init(void)
        Cvar_RegisterVariable(&vid_width);
        Cvar_RegisterVariable(&vid_height);
        Cvar_RegisterVariable(&vid_bitsperpixel);
+       Cvar_RegisterVariable(&vid_refreshrate);
        Cvar_RegisterVariable(&vid_vsync);
        Cvar_RegisterVariable(&vid_mouse);
+       Cvar_RegisterVariable(&vid_minwidth);
+       Cvar_RegisterVariable(&vid_minheight);
        Cvar_RegisterVariable(&gl_combine);
        Cvar_RegisterVariable(&gl_finish);
-       Cmd_AddCommand("force_centerview", Force_CenterView_f);
-       Cmd_AddCommand("vid_restart", VID_Restart_f);
+       Cmd_AddCommand("force_centerview", Force_CenterView_f, "recenters view (stops looking up/down)");
+       Cmd_AddCommand("vid_restart", VID_Restart_f, "restarts video system (closes and reopens the window, restarts renderer)");
        if (gamemode == GAME_GOODVSBAD2)
                Cvar_Set("gl_combine", "0");
 }
 
-int current_vid_fullscreen;
-int current_vid_width;
-int current_vid_height;
-int current_vid_bitsperpixel;
-int VID_Mode(int fullscreen, int width, int height, int bpp)
+int VID_Mode(int fullscreen, int width, int height, int bpp, int refreshrate)
 {
-       Con_Printf("Video: %s %dx%dx%d\n", fullscreen ? "fullscreen" : "window", width, height, bpp);
-       if (VID_InitMode(fullscreen, width, height, bpp))
+       Con_Printf("Video: %s %dx%dx%dx%dhz\n", fullscreen ? "fullscreen" : "window", width, height, bpp, refreshrate);
+       if (VID_InitMode(fullscreen, width, height, bpp, refreshrate))
        {
-               current_vid_fullscreen = fullscreen;
-               current_vid_width = width;
-               current_vid_height = height;
-               current_vid_bitsperpixel = bpp;
+               vid.fullscreen = fullscreen;
+               vid.width = width;
+               vid.height = height;
+               vid.bitsperpixel = bpp;
+               vid.refreshrate = refreshrate;
                Cvar_SetValueQuick(&vid_fullscreen, fullscreen);
                Cvar_SetValueQuick(&vid_width, width);
                Cvar_SetValueQuick(&vid_height, height);
                Cvar_SetValueQuick(&vid_bitsperpixel, bpp);
+               Cvar_SetValueQuick(&vid_refreshrate, refreshrate);
                return true;
        }
        else
@@ -931,15 +915,15 @@ void VID_Restart_f(void)
                return;
 
        Con_Printf("VID_Restart: changing from %s %dx%dx%dbpp, to %s %dx%dx%dbpp.\n",
-               current_vid_fullscreen ? "fullscreen" : "window", current_vid_width, current_vid_height, current_vid_bitsperpixel,
+               vid.fullscreen ? "fullscreen" : "window", vid.width, vid.height, vid.bitsperpixel,
                vid_fullscreen.integer ? "fullscreen" : "window", vid_width.integer, vid_height.integer, vid_bitsperpixel.integer);
        VID_CloseSystems();
        VID_Shutdown();
-       if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer))
+       if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_refreshrate.integer))
        {
                Con_Print("Video mode change failed\n");
-               if (!VID_Mode(current_vid_fullscreen, current_vid_width, current_vid_height, current_vid_bitsperpixel))
-                       Sys_Error("Unable to restore to last working video mode\n");
+               if (!VID_Mode(vid.fullscreen, vid.width, vid.height, vid.bitsperpixel, vid.refreshrate))
+                       Sys_Error("Unable to restore to last working video mode");
        }
        VID_OpenSystems();
 }
@@ -980,18 +964,19 @@ void VID_Start(void)
        }
 
        Con_Print("Starting video system\n");
-       success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer);
+       success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_refreshrate.integer);
        if (!success)
        {
                Con_Print("Desired video mode fail, trying fallbacks...\n");
+               success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, 60);
                if (!success && vid_bitsperpixel.integer > 16)
-                       success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, 16);
+                       success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, 16, 60);
                if (!success && (vid_width.integer > 640 || vid_height.integer > 480))
-                       success = VID_Mode(vid_fullscreen.integer, 640, 480, 16);
+                       success = VID_Mode(vid_fullscreen.integer, 640, 480, 16, 60);
                if (!success && vid_fullscreen.integer)
-                       success = VID_Mode(false, 640, 480, 16);
+                       success = VID_Mode(false, 640, 480, 16, 60);
                if (!success)
-                       Sys_Error("Video modes failed\n");
+                       Sys_Error("Video modes failed");
        }
        VID_OpenSystems();
 }