278 lines
9.0 KiB
C
278 lines
9.0 KiB
C
/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* $Id$
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*
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* Windows specific library for display handling.
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*
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* @author cix_foo <cix_foo@users.sourceforge.net>
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* @version $Revision$
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*/
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#include <windows.h>
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#include <jni.h>
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#include "org_lwjgl_opengl_WindowsDisplay.h"
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#include "display.h"
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#include "common_tools.h"
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static jobject createDisplayMode(JNIEnv *env, DEVMODE *devmode) {
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jclass displayModeClass;
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jmethodID displayModeConstructor;
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displayModeClass = (*env)->FindClass(env, "org/lwjgl/opengl/DisplayMode");
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if (displayModeClass == NULL)
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return NULL;
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displayModeConstructor = (*env)->GetMethodID(env, displayModeClass, "<init>", "(IIII)V");
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if (displayModeConstructor == NULL)
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return NULL;
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return (*env)->NewObject(env, displayModeClass, displayModeConstructor,
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devmode->dmPelsWidth, devmode->dmPelsHeight,
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devmode->dmBitsPerPel, devmode->dmDisplayFrequency);
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}
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/**
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* Choose displaymodes using extended codepath (multiple displaydevices)
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*/
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jobjectArray getAvailableDisplayModes(JNIEnv * env) {
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int i = 0, j = 0, n = 0;
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// DISPLAY_DEVICE DisplayDevice;
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DEVMODE DevMode;
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jobject *display_mode_objects = NULL;
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int list_size = 0;
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jclass displayModeClass;
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jobjectArray ret;
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displayModeClass = (*env)->FindClass(env, "org/lwjgl/opengl/DisplayMode");
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ZeroMemory(&DevMode, sizeof(DEVMODE));
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// ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
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DevMode.dmSize = sizeof(DEVMODE);
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// DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
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/* Multi-monitor stuff commented out since we're only really interested in the primary monitor */
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/* while(EnumDisplayDevices(NULL, i++, &DisplayDevice, 0) != 0) {
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// continue if mirroring device
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if((DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) != 0) {
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continue;
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}
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j = 0;
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while(EnumDisplaySettings((const char *) DisplayDevice.DeviceName, j++, &DevMode) != 0) {*/
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while(EnumDisplaySettings(NULL, j++, &DevMode) != 0) {
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// Filter out indexed modes
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if (DevMode.dmBitsPerPel > 8) {
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jobject displayMode;
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if (list_size <= n) {
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list_size += 1;
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display_mode_objects = (jobject *)realloc(display_mode_objects, sizeof(jobject)*list_size);
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if (display_mode_objects == NULL)
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return NULL;
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}
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displayMode = createDisplayMode(env, &DevMode);
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display_mode_objects[n++] = displayMode;
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}
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}
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// }
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printfDebugJava(env, "Found %d displaymodes", n);
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ret = (*env)->NewObjectArray(env, n, displayModeClass, NULL);
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for (i = 0; i < n; i++) {
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(*env)->SetObjectArrayElement(env, ret, i, display_mode_objects[i]);
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}
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free(display_mode_objects);
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return ret;
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}
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void switchDisplayMode(JNIEnv * env, jobject mode) {
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DEVMODE devmode;
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jclass cls_displayMode = (*env)->GetObjectClass(env, mode);
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jfieldID fid_width = (*env)->GetFieldID(env, cls_displayMode, "width", "I");
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jfieldID fid_height = (*env)->GetFieldID(env, cls_displayMode, "height", "I");
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jfieldID fid_bpp = (*env)->GetFieldID(env, cls_displayMode, "bpp", "I");
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jfieldID fid_freq = (*env)->GetFieldID(env, cls_displayMode, "freq", "I");
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int width = (*env)->GetIntField(env, mode, fid_width);
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int height = (*env)->GetIntField(env, mode, fid_height);
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int bpp = (*env)->GetIntField(env, mode, fid_bpp);
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int freq = (*env)->GetIntField(env, mode, fid_freq);
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LONG cdsret;
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ZeroMemory(&devmode, sizeof(DEVMODE));
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devmode.dmSize = sizeof(DEVMODE);
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devmode.dmBitsPerPel = bpp;
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devmode.dmPelsWidth = width;
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devmode.dmPelsHeight = height;
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devmode.dmDisplayFrequency = freq;
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devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
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if (freq != 0)
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devmode.dmFields |= DM_DISPLAYFREQUENCY;
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cdsret = ChangeDisplaySettings(&devmode, CDS_FULLSCREEN);
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if (cdsret != DISP_CHANGE_SUCCESSFUL) {
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/* What's the proper way to do this multiply with 2 thing, if at all necessary? */
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/* // Failed: so let's check to see if it's a wierd dual screen display
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printfDebugJava(env, "Failed to set display mode (%ld) ... assuming dual monitors", cdsret);
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devmode.dmPelsWidth = width * 2;
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cdsret = ChangeDisplaySettings(&devmode, CDS_FULLSCREEN);
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if (cdsret != DISP_CHANGE_SUCCESSFUL) {
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printfDebugJava(env, "Failed to set display mode using dual monitors (%ld)", cdsret);*/
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throwFormattedException(env, "Failed to set display mode (%ld).", cdsret);
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return;
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// }
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}
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}
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static jobject createNativeGammaBuffer(JNIEnv *env) {
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return newJavaManagedByteBuffer(env, sizeof(WORD)*3*org_lwjgl_opengl_WindowsDisplay_GAMMA_LENGTH);
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}
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jobject getCurrentGammaRamp(JNIEnv *env) {
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jobject gamma_buffer;
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WORD *gamma;
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HDC screenDC;
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gamma_buffer = createNativeGammaBuffer(env);
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if (gamma_buffer == NULL)
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return NULL;
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gamma = (WORD *)(*env)->GetDirectBufferAddress(env, gamma_buffer);
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// Get the screen
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screenDC = GetDC(NULL);
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if (screenDC == NULL) {
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throwException(env, "Couldn't get screen DC!");
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return NULL;
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}
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// Get the default gamma ramp
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if (GetDeviceGammaRamp(screenDC, gamma) == FALSE) {
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printfDebugJava(env, "Failed to get initial device gamma");
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}
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ReleaseDC(NULL, screenDC);
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return gamma_buffer;
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}
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void setGammaRamp(JNIEnv * env, jobject gammaRampBuffer) {
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HDC screenDC;
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WORD *gammaRamp = (WORD *)(*env)->GetDirectBufferAddress(env, gammaRampBuffer);
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screenDC = GetDC(NULL);
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if (SetDeviceGammaRamp(screenDC, gammaRamp) == FALSE) {
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throwException(env, "Failed to set device gamma.");
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}
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ReleaseDC(NULL, screenDC);
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}
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jobject convertToNativeRamp(JNIEnv *env, jobject float_gamma_obj) {
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int i;
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float scaledRampEntry;
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WORD rampEntry;
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const float *gammaRamp = (const float *)(*env)->GetDirectBufferAddress(env, float_gamma_obj);
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jint gamma_ramp_length = (jint)(*env)->GetDirectBufferCapacity(env, float_gamma_obj);
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jobject native_ramp;
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WORD *native_ramp_buffer;
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native_ramp = createNativeGammaBuffer(env);
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if (native_ramp == NULL)
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return NULL;
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native_ramp_buffer = (WORD *)(*env)->GetDirectBufferAddress(env, native_ramp);
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// Turn array of floats into array of RGB WORDs
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for (i = 0; i < gamma_ramp_length; i++) {
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scaledRampEntry = gammaRamp[i]*0xffff;
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rampEntry = (WORD)scaledRampEntry;
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native_ramp_buffer[i] = rampEntry;
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native_ramp_buffer[i + org_lwjgl_opengl_WindowsDisplay_GAMMA_LENGTH] = rampEntry;
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native_ramp_buffer[i + 2*org_lwjgl_opengl_WindowsDisplay_GAMMA_LENGTH] = rampEntry;
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}
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return native_ramp;
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}
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jobject getCurrentDisplayMode(JNIEnv * env) {
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DEVMODE devmode;
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if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &devmode)) {
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throwFormattedException(env, "Couldn't get current display settings (%ld)", GetLastError());
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return NULL;
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}
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return createDisplayMode(env, &devmode);
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}
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void resetDisplayMode(JNIEnv * env) {
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// Under Windows, all we have to do is:
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ChangeDisplaySettings(NULL, 0);
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}
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jobject getVersion(JNIEnv * env, char *driver)
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{
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DWORD var = 0;
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DWORD dwInfoSize;
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LPVOID lpInfoBuff;
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BOOL bRetval;
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jclass version_class;
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jmethodID version_cons;
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jobject ret = NULL;
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version_class = (*env)->FindClass(env, "org/lwjgl/opengl/WindowsFileVersion");
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if (version_class == NULL)
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return NULL;
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version_cons = (*env)->GetMethodID(env, version_class, "<init>", "(II)V");
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if (version_cons == NULL)
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return NULL;
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dwInfoSize = GetFileVersionInfoSize(driver, &var);
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lpInfoBuff = malloc(dwInfoSize);
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if (lpInfoBuff == NULL) {
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throwException(env, "Failed to allocate lpInfoBuff");
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return NULL;
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}
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bRetval = GetFileVersionInfo(driver, 0, dwInfoSize, lpInfoBuff);
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if (bRetval != 0) {
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VS_FIXEDFILEINFO * fxdFileInfo;
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UINT uiLen = 0;
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bRetval = VerQueryValue(lpInfoBuff, TEXT("\\"), (void *)&fxdFileInfo, &uiLen);
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if (bRetval != 0)
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ret = (*env)->NewObject(env, version_class, version_cons, fxdFileInfo->dwProductVersionMS, fxdFileInfo->dwProductVersionLS);
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}
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free(lpInfoBuff);
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return ret;
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}
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