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MacGLide/MacGLide/OpenGLide/GlideSettings.cpp

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//**************************************************************
//* OpenGLide for Macintosh - Glide to OpenGL Wrapper
//* http://macglide.sourceforge.net/
//*
//* OpenGLide Settings File
//*
//* OpenGLide is OpenSource under LGPL license
//* Mac version and additional features by Jens-Olaf Hemprich
//**************************************************************
#include "GlOgl.h"
#include "GlideSettings.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////// Version numbers ///////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
const char* GlideSettings::OpenGLidePreferencesVersion = "0.13";
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
GlideSettings::GlideSettings()
: m_FileBuffer(NULL)
, m_FileBufferSize(0)
{
defaults();
}
GlideSettings::~GlideSettings(void)
{
}
bool GlideSettings::get(const char* setting, const char** value)
{
static char buffer[StringBufferSize];
buffer[0] = 0x0;
bool found = false;
const char* v = m_FileBuffer;
while(!found && v)
{
v = strstr(v, setting);
if (v)
{
int s = strlen(setting);
// At the beginning of the line or tabbed and followed by '='
if (v[-1] < 0x20 && v[s] == '=')
{
// found, point to begin of setting
v = v + s + 1;
// copy til end of line
sscanf(v, "%255s", buffer);
found = true;
}
else
{
// Wrong match, maybe a comment
v++;
}
}
}
*value = buffer;
if (!found)
{
GlideMsg("Setting '%s' not found, using default value\n", setting);
}
return found;
}
bool GlideSettings::get(const char* setting, unsigned long* value)
{
const char* v;
if (get(setting, &v))
{
*value = atol(v);
return true;
}
else
{
// keep default value
return false;
}
}
bool GlideSettings::get(const char* setting, float* value)
{
const char* v;
if (get(setting, &v))
{
*value = atof(v);
return true;
}
else
{
// keep default value
return false;
}
}
bool GlideSettings::get(const char* setting, bool* value)
{
const char* v;
if (get(setting, &v))
{
*value = atol(v) != 0;
return true;
}
else
{
// keep default value
return false;
}
}
void GlideSettings::defaults()
{
#ifdef OGL_DEBUG
GlideMsg("Initialising to internal default settings...\n");
#endif
// These are the default values that will end up in a new configuration file.
// OpenGL extensions that can be disabled via the config file must be set to
// true in order to become enabled in ValidateUserConfig()
Resolution = 1;
ResolutionCap = 0;
MonitorRefreshRate = 0;
DepthBufferBits = 0;
FullSceneAntiAliasing = 0;
GammaBias = -0.3f;
TextureSmoothing = false;
DisplayMode = OpenGLideDisplayMode_DisplayManager;
#ifdef OPENGLIDE_SYSTEM_HAS_FOGCOORD
FogMode = OpenGLideFogEmulation_FogCoord;
#else
FogMode = OpenGLideFogEmulation_EnvCombine;
#endif
ColorAlphaRenderMode = OpenGLideColorAlphaRenderMode_Automatic;
PrecisionFix = 1;
/*
// Not bad
GapFix = static_cast<OpenGLideGapFixFlags>(OpenGLideGapFixFlag_IncircleOr |
OpenGLideGapFixFlag_DepthFactor);
GapFixParam1 = 3.0f;
GapFixParam2 = 10.0f;
GapFixParam3 = 3.0f;
GapFixDepthFactor = 3.3f;
*/
/*
// But this one is better
GapFix = static_cast<OpenGLideGapFixFlags>(OpenGLideGapFixFlag_VertexLengthSecondRadius |
OpenGLideGapFixFlag_DepthFactor);
GapFixParam1 = 3.0f;
GapFixParam2 = 25.0f;
GapFixParam3 = 0.9f;
GapFixDepthFactor = 3.3f;
*/
// @todo: Let's improve these default values even more
GapFix = static_cast<OpenGLideGapFixFlags>(OpenGLideGapFixFlag_VertexLengthSecondRadius |
OpenGLideGapFixFlag_DepthFactor);
GapFixParam1 = 3.0f;
GapFixParam2 = 25.0f;
GapFixParam3 = 0.9f;
GapFixDepthFactor = 3.3f;
GenerateSubTextures = 0;
Mipmapping = true;
AnisotropylLevel = 16;
IgnorePaletteChange = false;
ARB_multitexture = true;
EXT_paletted_texture = true;
EXT_texture_env_add = true;
EXT_texture_env_combine = true;
ATI_texture_env_combine3 = true;
#ifdef OPENGLIDE_SYSTEM_HAS_FOGCOORD
EXT_fog_coord = true;
#endif
#ifdef OPENGLIDE_SYSTEM_HAS_BLENDFUNC_SEPERATE
EXT_blend_func_separate = true;
#endif
EXT_texture_lod_bias = true;
EXT_secondary_color = true;
EXT_SGIS_generate_mipmap = true;
EXT_SGIS_texture_edge_clamp = true;
APPLE_client_storage = true;
EXT_compiled_vertex_array = true;
ARB_texture_rectangle = true;
EXT_texture_filter_anisotropic = true;
ARB_multisample = true;
NV_multisample_filter_hint = true;
EXT_clip_volume_hint = true;
APPLE_transform_hint = true;
TextureMemorySize = 16;
FrameBufferMemorySize = 8;
EnableFrameBufferOverlays = true;
EnableFrameBufferUnderlays = true;
FramebufferIgnoreUnlock = false;
PedanticFrameBufferEmulation = false;
BoardType = static_cast<OpenGLideBoardType>(GR_SSTTYPE_VOODOO);
GlideTextureUnits = 0;
NoSplash = false;
ShamelessPlug = false;
UseApplicationSpecificSettings = false;
AutoEnableGameSpecificSettings = true;
VectorUnitType = OpenGLideVectorUnitType_None;
}
GlideSettings::IOErr GlideSettings::read_settings()
{
#ifdef OGL_DEBUG
GlideMsg("Reading values...\n");
#endif
unsigned long value;
get("DisplayMode", &value);
DisplayMode = static_cast<OpenGLideDisplayMode>(value);
get("Resolution", &Resolution);
get("ResolutionCap", &ResolutionCap);
get("MonitorRefreshRate", &MonitorRefreshRate);
get("DepthBufferBits", &DepthBufferBits);
get("Mipmapping", &Mipmapping);
get("AnisotropylLevel", &AnisotropylLevel);
get("FullSceneAntiAliasing", &FullSceneAntiAliasing);
get("GammaBias", &GammaBias);
get("TextureSmoothing", &TextureSmoothing);
get("FogMode", &value);
FogMode = static_cast<OpenGLideFogEmulation>(value);
get("ColorAlphaRenderMode", &value);
ColorAlphaRenderMode = static_cast<OpenGLideColorAlphaRenderMode>(value);
get("EnablePrecisionFix", &PrecisionFix);
get("GapFix", &value);
GapFix = static_cast<OpenGLideGapFixFlags>(value);
get("GapFixParam1", &GapFixParam1);
get("GapFixParam2", &GapFixParam2);
get("GapFixParam3", &GapFixParam3);
get("GapFixDepthFactor", &GapFixDepthFactor);
get("GenerateSubTextures", &GenerateSubTextures);
get("IgnorePaletteChange", &IgnorePaletteChange);
get("TextureMemorySize", &TextureMemorySize);
get("FrameBufferMemorySize", &FrameBufferMemorySize);
get("EnableFrameBufferOverlays", &EnableFrameBufferOverlays);
get("EnableFrameBufferUnderlays", &EnableFrameBufferUnderlays);
get("FramebufferIgnoreUnlock", &FramebufferIgnoreUnlock);
get("PedanticFrameBufferEmulation", &PedanticFrameBufferEmulation);
get("EXT_compiled_vertex_array", &EXT_compiled_vertex_array);
get("ARB_texture_rectangle", &ARB_texture_rectangle);
get("APPLE_client_storage", &APPLE_client_storage);
get("ARB_multitexture", &ARB_multitexture);
get("EXT_paletted_texture", &EXT_paletted_texture);
get("EXT_clip_volume_hint", &EXT_clip_volume_hint);
get("BoardType", &value);
BoardType = static_cast<OpenGLideBoardType>(value);
get("GlideTextureUnits", &GlideTextureUnits);
get("NoSplash", &NoSplash);
get("ShamelessPlug", &ShamelessPlug);
get("UseApplicationSpecificSettings", &UseApplicationSpecificSettings);
get("AutoEnableGameSpecificSettings", &AutoEnableGameSpecificSettings);
return noErr;
}
GlideSettings::IOErr GlideSettings::load()
{
#ifdef OGL_DEBUG
GlideMsg( OGL_LOG_SEPARATE );
GlideMsg("Loading settings from preferences directory...\n");
#endif
const char* prefs_version = OpenGLidePreferencesVersion;
GlideSettings::IOErr err = read_defaults();
if (err == noErr)
{
const char* version_complaint = "Unable to read version information from %s settings - using default values\n";
const char* version;
bool success = get("Version", &version);
if (success)
{
GlideMsg("Settings file version = %s\n", version);
}
if (success && strcmp(version, prefs_version) == 0)
{
// Version match
err = read_settings();
}
else if (!success)
{
// Unable to read settings file version information - somethings seriously wrong
GlideError(version_complaint, "default");
}
else
{
// Write new settings file after settings file version change
GlideMsg("Configuration outdated - Creating new default settings %s...\n", prefs_version);
defaults();
err = create_defaults();
if (err == noErr)
{
err = save();
}
}
if (err == noErr)
{
// Default or application specific config?
if (UseApplicationSpecificSettings)
{
// Read application specific config
err = read();
if (err == noErr)
{
// Version check
success = get("Version", &version);
if (success && strcmp(version, prefs_version) == 0)
{
bool use_app_specific_settings = false;
success = get("UseApplicationSpecificSettings", &use_app_specific_settings);
if (use_app_specific_settings)
{
err = read_settings();
}
}
else if (!success)
{
// Unable to read settings file version information - somethings seriously wrong
GlideError(version_complaint, "application specific");
}
else
{
// Write new settings file after settings file version change
GlideMsg("Configuration outdated - Creating new application specific settings %s...\n", prefs_version);
defaults();
err = create();
if (err == noErr)
{
err = save();
}
}
}
}
}
}
return err;
}
GlideSettings::IOErr GlideSettings::saveSettings()
{
#ifdef OGL_DEBUG
GlideMsg("Saving...\n");
#endif
IOErr err = put("Configuration File for MacGLide");
if (err == noErr)
{
put();
put();
put("Current version number of the settings file:" );
put("Version", OpenGLidePreferencesVersion);
put();
put("Enable to apply application specific settings:");
put("UseApplicationSpecificSettings", UseApplicationSpecificSettings);
put();
put("Video settings");
put();
put("Fullscreen display:");
put("0 for windowed mode, 1 for fullscreen display");
put("DisplayMode", static_cast<unsigned long>(DisplayMode));
put();
put("Display resolution:");
put("0: Always use the resolution denoted by the ResolutionCap settings");
put("1-8: Multiplier for Glide resolution as requested by the");
put("game/application. Any value equal or greater than 512:");
put("fixed x resolution (y is computed for a 4/3 aspect ratio)");
put("Resolution", Resolution);
put();
put("Display resolution cap:");
put("0 to disable, otherwise the maximum");
put("x resolution to use for the Glide display");
put("(y is computed for a 4/3 aspect ratio)");
put("ResolutionCap", ResolutionCap);
put();
put("Refresh rate of the monitor:");
put("0 to use the Glide refresh rate as requested by the game/");
put("application. Any other value equal or greater than 60(Hz):");
put("Use fixed refresh rate");
put("MonitorRefreshRate", MonitorRefreshRate);
put();
put("Gamma bias value for the Glide display:");
put("Most games adjust the gamma correction of the display.");
put("For certain monitors and LCD display the resulting gamma");
put("correction might be too bright (probably because the");
put("3Dfx-Hardware was never supposed to work with LCD displays).");
put("Although most games provide a way to adjust the gamma");
put("correction via their configuration dialog, it might be");
put("necessary to set a reasonable default bias value.");
put("Reasonable bias values are -1.0 to 1.0.");
put("GammaBias", GammaBias);
put();
put("Mip-Mapping: 0 to disable, 1 to enable mipmapped textures");
put("Mipmapping", Mipmapping);
put();
put("Anisotropic filtering:");
put("0 or 1 to disable, 2, 4, 8, 16 to specify the quality");
put("level of anisotropic filtering");
put("AnisotropylLevel", AnisotropylLevel);
put();
put("Fullscene antialiasing:");
put("0 to disable, any other value to set number of samples to use");
put("for antialiasing (currently this works with ATI cards only)");
put("FullSceneAntiAliasing", FullSceneAntiAliasing);
put();
put();
put("Game specific settings (usually set automatically per application");
put();
put("Enable game specific settings automatically:");
put("0 to disable, 1 to automatically certain enable game specific settings");
put("The settings in this section don't work with all games. To avoid");
put("problems, these settings are usually set individually for each game.");
put("AutoEnableGameSpecificSettings", AutoEnableGameSpecificSettings);
put();
put("Texture smoothing:");
put("0 to disable, 1 to enable texture filtering. Overrides Glide");
put("texture filter settings in order to suppress blocky pixels.");
put("Some games don't like these filter settings to be changed, for");
put("instance horizontal and vertical gaps may appear in texture-based");
put("menu screens");
put("TextureSmoothing", TextureSmoothing);
put();
put("Texture artefact optimisation for Tomb Raider 1 & 2:");
put("Tomb Raider joins a number of texture images within a");
put("larger texture object. In conjunction with ansisotropic");
put("filtering and mipmapping this cause artefacts at the");
put("edges of single tiles/triangles.");
put("0 to disable, n (power of 2) to place each texture image");
put("into a seperate OpenGL texture object. The value determines");
put("the grid points and the minimal size of the generated");
put("OpenGL textures.");
put("GenerateSubTextures", GenerateSubTextures);
put();
put("Vertex gapfix optimisation for Tomb Raider 1 & 2:");
put("Reduces gaps between tiles in the tomb raider series");
put("(best observed in TR1, but TR2 is also affected)");
put("A combination of the following values:");
put("1=Enable, 2=Debug, 4=DepthFactor, 16=IncircleOr,");
put("32=IncircleAnd, 64=IncircleSecondRadius,");
put("128=VertexLengthSecondRadius");
put("GapFix", static_cast<unsigned long>(GapFix));
put();
put("Minimum pixel incircle of a triangle for applying the gapfix");
put("GapFixParam1", GapFixParam1);
put();
put("Minimum value of the isoscelesness or the maximum vertex");
put("length of a triangle for applying the gapfix");
put("(an isosceles triangle has a value of 10)");
put("GapFixParam2", GapFixParam2);
put();
put("Second minimum incircle of a triangle for applying the gapfix,");
put(" this one is independent from the isoscelesness/vertex length");
put("GapFixParam3", GapFixParam3);
put();
put("Multiplies the incircles/isoscelesness with the vertex depth to");
put("allow applying the gapfix to smaller triangles in the background");
put("GapFixDepthFactor", GapFixDepthFactor);
put();
put();
put("Various settings that affect the rendering quality.");
put();
put("Fog emulation method:");
put("0 to disable, 1 for simple, 2 for complete fog emulation");
put("FogMode", static_cast<unsigned long>(FogMode));
put();
put("The renderer to be used to emulate the Glide color and alpha");
put("combine unit. 0 for automatic selection, 1 for simple (0.10),");
put("2 for enhanced, and 3 for enhanced ATI optimised emulation");
put("ColorAlphaRenderMode", static_cast<unsigned long>(ColorAlphaRenderMode));
put();
put("Number of bits to use for the depth buffer:");
put("0: automatic (attempts to use the largest possible value)");
put("16, 24, 32: use the specified number of bits for the depth buffer");
put("DepthBufferBits", DepthBufferBits);
put();
put("Depth precision fix: attempts to avoid depth precision");
put("problems on graphic cards with only 16bit-zbuffer depth");
put("0 = always off, 1 = automatic, 2 = always on");
put("EnablePrecisionFix", PrecisionFix);
put();
put();
put("Various debug settings");
put();
put("IgnorePaletteChange", IgnorePaletteChange);
put("EnableFrameBufferOverlays", EnableFrameBufferOverlays);
put("EnableFrameBufferUnderlays", EnableFrameBufferUnderlays);
put("FramebufferIgnoreUnlock", FramebufferIgnoreUnlock);
put("PedanticFrameBufferEmulation", PedanticFrameBufferEmulation);
put();
put("Various optional opengl extensions");
put();
put("EXT_compiled_vertex_array", EXT_compiled_vertex_array);
put("ARB_texture_rectangle", ARB_texture_rectangle);
put("APPLE_client_storage", APPLE_client_storage);
put("ARB_multitexture", ARB_multitexture);
put("EXT_paletted_texture", EXT_paletted_texture);
put("EXT_clip_volume_hint", EXT_clip_volume_hint);
put();
put();
put("Glide hardware settings");
put();
putv("Texture Memory goes from %d to %d", OGL_MIN_TEXTURE_BUFFER, OGL_MAX_TEXTURE_BUFFER);
put("TextureMemorySize", TextureMemorySize);
put();
putv("Frame Buffer Memory goes from %d to %d", OGL_MIN_FRAME_BUFFER, OGL_MAX_FRAME_BUFFER);
put("FrameBufferMemorySize", FrameBufferMemorySize);
put();
put("The hardware we're pretending to be emulating");
put("(This has no effect on the emulation, but games may change");
put("their behaviour/features depending on this setting)");
put("0 = Voodoo, 1 = SST-96, 2 = AT3D, 3 = Voodoo 2");
put("BoardType", static_cast<unsigned long>(BoardType));
put();
put("The number of emulated Glide texture units (TMUs)");
put("0 = as many as possible, 1-3 number of emulated TMUs");
put("GlideTextureUnits", GlideTextureUnits);
put();
put("0 to display the cool splash animation on startup,");
put("or 1 to supress the annoying splash animation");
put("NoSplash", NoSplash);
put();
put("Shows the 3Dfx logo in the lower right corner of the screen");
put("ShamelessPlug", ShamelessPlug);
// Get the error code of the last write in order to catch errors like "Disk full" etc.
err = put();
}
return err;
}
GlideSettings::IOErr GlideSettings::put()
{
return put_raw("\n");
}
GlideSettings::IOErr GlideSettings::put(const char* string)
{
GlideSettings::IOErr err = put_raw("# ");
if (err == noErr)
{
err = put_raw(string);
if (err == noErr)
{
put();
}
}
return err;
}
GlideSettings::IOErr GlideSettings::putv(const char* format, ...)
{
va_list(args);
va_start(args, format);
char buffer[StringBufferSize];
vsnprintf(buffer, StringBufferSize, format, args );
GlideSettings::IOErr err = put(buffer);
va_end(args);
return err;
}
GlideSettings::IOErr GlideSettings::put(unsigned long value)
{
GlideSettings::IOErr err = noErr;
char buffer[StringBufferSize];
if (snprintf(buffer, StringBufferSize, "%d", value) > 0)
{
err = put_raw(buffer);
}
return err;
}
GlideSettings::IOErr GlideSettings::put(const char* setting, const char* value)
{
GlideSettings::IOErr err = put_raw(setting);
if (err == noErr)
{
err = put_raw("=");
if (err == noErr)
{
err = put_raw(value);
if (err == noErr)
{
err = put_raw("\n");
}
}
}
return err;
}
GlideSettings::IOErr GlideSettings::put(const char* setting, unsigned long value)
{
GlideSettings::IOErr err = put_raw(setting);
if (err == noErr)
{
err = put_raw("=");
if (err == noErr)
{
char buffer[StringBufferSize];
if (snprintf(buffer, StringBufferSize, "%d", value) > 0)
{
err = put_raw(buffer);
}
if (err == noErr)
{
err = put_raw("\n");
}
}
}
return err;
}
GlideSettings::IOErr GlideSettings::put(const char* setting, float value)
{
GlideSettings::IOErr err = put_raw(setting);
if (err == noErr)
{
err = put_raw("=");
if (err == noErr)
{
char buffer[StringBufferSize];
if (snprintf(buffer, StringBufferSize, "%g", value) > 0)
{
err = put_raw(buffer);
}
if (err == noErr)
{
err = put_raw("\n");
}
}
}
return err;
}
GlideSettings::IOErr GlideSettings::put(const char* setting, bool value)
{
return put(setting, value ? "1" : "0");
}
GlideSettings::IOErr GlideSettings::save()
{
IOErr err = saveSettings();
if (err == noErr)
{
err = close();
}
else
{
close();
}
return err;
}
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