Show org_lwjgl_opengl_Pbuffer.c syntax highlighted
/*
* Copyright (c) 2002-2004 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* $Id: org_lwjgl_opengl_Pbuffer.c 2618 2006-10-30 15:46:42Z elias_naur $
*
* Windows Pbuffer.
*
* @author elias_naur <elias_naur@users.sourceforge.net>
* @version $Revision: 2618 $
*/
#include <stdlib.h>
#include "org_lwjgl_opengl_WindowsDisplay.h"
#include "org_lwjgl_opengl_Pbuffer.h"
#include "context.h"
#include "extgl.h"
#include "extgl_wgl.h"
#include "common_tools.h"
static bool isPbufferSupported(WGLExtensions *extensions) {
return extensions->WGL_ARB_pixel_format && extensions->WGL_ARB_pbuffer;
}
static bool getExtensions(JNIEnv *env, WGLExtensions *extensions, jobject pixel_format, jobject pixelFormatCaps) {
int origin_x = 0; int origin_y = 0;
HWND dummy_hwnd;
HDC dummy_hdc;
HGLRC dummy_context;
HDC saved_hdc;
HGLRC saved_context;
int pixel_format_id;
dummy_hwnd = createDummyWindow(origin_x, origin_y);
if (dummy_hwnd == NULL) {
throwException(env, "Could not create dummy window");
return false;
}
dummy_hdc = GetDC(dummy_hwnd);
pixel_format_id = findPixelFormatOnDC(env, dummy_hdc, origin_x, origin_y, pixel_format, pixelFormatCaps, false, true, false, false, false);
if (pixel_format_id == -1) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return false;
}
if (!applyPixelFormat(env, dummy_hdc, pixel_format_id)) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return false;
}
dummy_context = wglCreateContext(dummy_hdc);
if (dummy_context == NULL) {
closeWindow(&dummy_hwnd, &dummy_hdc);
throwException(env, "Could not create dummy context");
return false;
}
saved_hdc = wglGetCurrentDC();
saved_context = wglGetCurrentContext();
if (!wglMakeCurrent(dummy_hdc, dummy_context)) {
wglMakeCurrent(saved_hdc, saved_context);
closeWindow(&dummy_hwnd, &dummy_hdc);
wglDeleteContext(dummy_context);
throwException(env, "Could not make dummy context current");
return false;
}
extgl_InitWGL(extensions);
if (!wglMakeCurrent(saved_hdc, saved_context))
printfDebugJava(env, "ERROR: Could not restore current context");
closeWindow(&dummy_hwnd, &dummy_hdc);
wglDeleteContext(dummy_context);
return true;
}
JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_WindowsDisplay_nGetPbufferCapabilities
(JNIEnv *env, jobject self, jobject pixel_format)
{
int caps = 0;
WGLExtensions extensions;
if (!getExtensions(env, &extensions, pixel_format, NULL))
return 0;
if (isPbufferSupported(&extensions))
caps |= org_lwjgl_opengl_Pbuffer_PBUFFER_SUPPORTED;
if (extensions.WGL_ARB_render_texture)
caps |= org_lwjgl_opengl_Pbuffer_RENDER_TEXTURE_SUPPORTED;
if (extensions.WGL_NV_render_texture_rectangle)
caps |= org_lwjgl_opengl_Pbuffer_RENDER_TEXTURE_RECTANGLE_SUPPORTED;
if (extensions.WGL_NV_render_depth_texture)
caps |= org_lwjgl_opengl_Pbuffer_RENDER_DEPTH_TEXTURE_SUPPORTED;
return caps;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nCreate
(JNIEnv *env, jobject self, jobject peer_info_handle,
jint width, jint height, jobject pixel_format,
jobject pixelFormatCaps, jobject pBufferAttribs)
{
int origin_x = 0; int origin_y = 0;
HWND dummy_hwnd;
HDC dummy_hdc;
HPBUFFERARB Pbuffer;
HDC Pbuffer_dc;
WGLExtensions extensions;
const int *pBufferAttribs_ptr;
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
int pixel_format_id;
jclass cls_pixel_format = (*env)->GetObjectClass(env, pixel_format);
bool floating_point = (bool)(*env)->GetBooleanField(env, pixel_format, (*env)->GetFieldID(env, cls_pixel_format, "floating_point", "Z"));
if ( pBufferAttribs != NULL ) {
pBufferAttribs_ptr = (const int *)(*env)->GetDirectBufferAddress(env, pBufferAttribs);
} else {
pBufferAttribs_ptr = NULL;
}
if (!getExtensions(env, &extensions, pixel_format, pixelFormatCaps))
return;
dummy_hwnd = createDummyWindow(origin_x, origin_y);
if (dummy_hwnd == NULL) {
throwException(env, "Could not create dummy window");
return;
}
dummy_hdc = GetDC(dummy_hwnd);
pixel_format_id = findPixelFormatOnDC(env, dummy_hdc, origin_x, origin_y, pixel_format, pixelFormatCaps, false, false, true, false, floating_point);
if (pixel_format_id == -1) {
closeWindow(&dummy_hwnd, &dummy_hdc);
return;
}
Pbuffer = extensions.wglCreatePbufferARB(dummy_hdc, pixel_format_id, width, height, pBufferAttribs_ptr);
closeWindow(&dummy_hwnd, &dummy_hdc);
if (Pbuffer == NULL) {
throwException(env, "Could not create Pbuffer");
return;
}
Pbuffer_dc = extensions.wglGetPbufferDCARB(Pbuffer);
if (Pbuffer_dc == NULL) {
extensions.wglDestroyPbufferARB(Pbuffer);
throwException(env, "Could not get Pbuffer DC");
return;
}
peer_info->u.pbuffer.extensions = extensions;
peer_info->u.pbuffer.pbuffer = Pbuffer;
peer_info->drawable_hdc = Pbuffer_dc;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nDestroy
(JNIEnv *env, jclass clazz, jobject peer_info_handle) {
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
peer_info->u.pbuffer.extensions.wglReleasePbufferDCARB(peer_info->u.pbuffer.pbuffer, peer_info->drawable_hdc);
peer_info->u.pbuffer.extensions.wglDestroyPbufferARB(peer_info->u.pbuffer.pbuffer);
}
JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nIsBufferLost
(JNIEnv *env, jclass clazz, jobject peer_info_handle) {
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
BOOL buffer_lost;
peer_info->u.pbuffer.extensions.wglQueryPbufferARB(peer_info->u.pbuffer.pbuffer, WGL_PBUFFER_LOST_ARB, &buffer_lost);
return buffer_lost ? JNI_TRUE : JNI_FALSE;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nSetPbufferAttrib
(JNIEnv *env, jclass clazz, jobject peer_info_handle, jint attrib, jint value) {
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
int attribs[3];
attribs[0] = attrib;
attribs[1] = value;
attribs[2] = 0;
peer_info->u.pbuffer.extensions.wglSetPbufferAttribARB(peer_info->u.pbuffer.pbuffer, attribs);
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nBindTexImageToPbuffer
(JNIEnv *env, jclass clazz, jobject peer_info_handle, jint buffer) {
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
peer_info->u.pbuffer.extensions.wglBindTexImageARB(peer_info->u.pbuffer.pbuffer, buffer);
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_WindowsPbufferPeerInfo_nReleaseTexImageFromPbuffer
(JNIEnv *env, jclass clazz, jobject peer_info_handle, jint buffer) {
WindowsPeerInfo *peer_info = (WindowsPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
peer_info->u.pbuffer.extensions.wglReleaseTexImageARB(peer_info->u.pbuffer.pbuffer, buffer);
}
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