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/*
* $RCSfile$
*
* Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision$
* $Date$
* $State$
*/
#include <stdio.h>
#include <jni.h>
#include "gldefs.h"
extern void throwAssert(JNIEnv *env, char *str);
JNIEXPORT
void JNICALL Java_javax_media_j3d_NativePipeline_readRaster(
JNIEnv *env, jobject obj, jlong ctx,
jint type, jint xOffset, jint yOffset,
jint wRaster, jint hRaster, jint hCanvas,
jint imageDataType,
jint imageFormat, jobject imageBuffer,
jint depthFormat, jobject depthBuffer)
{
JNIEnv table;
int yAdjusted;
GLenum oglFormat;
void *imageObjPtr;
void *depthObjPtr;
GraphicsContextPropertiesInfo *ctxProperties = (GraphicsContextPropertiesInfo *)ctx;
table = *env;
glPixelStorei(GL_PACK_ROW_LENGTH, wRaster);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
yAdjusted = hCanvas - hRaster - yOffset;
if ((type & javax_media_j3d_Raster_RASTER_COLOR) != 0) {
imageObjPtr =
(void *)(*(table->GetPrimitiveArrayCritical))(env, (jarray)imageBuffer, NULL);
if(imageDataType == IMAGE_DATA_TYPE_BYTE_ARRAY) {
switch (imageFormat) {
/* GL_BGR */
case IMAGE_FORMAT_BYTE_BGR:
oglFormat = GL_BGR;
break;
case IMAGE_FORMAT_BYTE_RGB:
oglFormat = GL_RGB;
break;
/* GL_ABGR_EXT */
case IMAGE_FORMAT_BYTE_ABGR:
if (ctxProperties->abgr_ext) { /* If its zero, should never come here! */
oglFormat = GL_ABGR_EXT;
}
else {
throwAssert(env, "readRaster : GL_ABGR_EXT format is unsupported");
return;
}
break;
case IMAGE_FORMAT_BYTE_RGBA:
oglFormat = GL_RGBA;
break;
case IMAGE_FORMAT_BYTE_LA:
/* all LA types are stored as LA8 */
oglFormat = GL_LUMINANCE_ALPHA;
break;
case IMAGE_FORMAT_BYTE_GRAY:
case IMAGE_FORMAT_USHORT_GRAY:
case IMAGE_FORMAT_INT_BGR:
case IMAGE_FORMAT_INT_RGB:
case IMAGE_FORMAT_INT_ARGB:
default:
throwAssert(env, "readRaster : imageFormat illegal format");
return;
}
glReadPixels(xOffset, yAdjusted, wRaster, hRaster,
oglFormat, GL_UNSIGNED_BYTE, imageObjPtr);
}
else if(imageDataType == IMAGE_DATA_TYPE_INT_ARRAY) {
GLenum intType = GL_UNSIGNED_INT_8_8_8_8;
GLboolean forceAlphaToOne = GL_FALSE;
switch (imageFormat) {
/* GL_BGR */
case IMAGE_FORMAT_INT_BGR: /* Assume XBGR format */
oglFormat = GL_RGBA;
intType = GL_UNSIGNED_INT_8_8_8_8_REV;
forceAlphaToOne = GL_TRUE;
break;
case IMAGE_FORMAT_INT_RGB: /* Assume XRGB format */
forceAlphaToOne = GL_TRUE;
/* Fall through to next case */
case IMAGE_FORMAT_INT_ARGB:
oglFormat = GL_BGRA;
intType = GL_UNSIGNED_INT_8_8_8_8_REV;
break;
/* This method only supports 3 and 4 components formats and INT types. */
case IMAGE_FORMAT_BYTE_LA:
case IMAGE_FORMAT_BYTE_GRAY:
case IMAGE_FORMAT_USHORT_GRAY:
case IMAGE_FORMAT_BYTE_BGR:
case IMAGE_FORMAT_BYTE_RGB:
case IMAGE_FORMAT_BYTE_RGBA:
case IMAGE_FORMAT_BYTE_ABGR:
default:
throwAssert(env, "readRaster : imageFormat illegal format");
return;
}
/* Force Alpha to 1.0 if needed */
if(forceAlphaToOne) {
glPixelTransferf(GL_ALPHA_SCALE, 0.0f);
glPixelTransferf(GL_ALPHA_BIAS, 1.0f);
}
glReadPixels(xOffset, yAdjusted, wRaster, hRaster,
oglFormat, intType, imageObjPtr);
/* Restore Alpha scale and bias */
if(forceAlphaToOne) {
glPixelTransferf(GL_ALPHA_SCALE, 1.0f);
glPixelTransferf(GL_ALPHA_BIAS, 0.0f);
}
}
else {
throwAssert(env, "readRaster : illegal image data type");
return;
}
(*(table->ReleasePrimitiveArrayCritical))(env, imageBuffer, imageObjPtr, 0);
}
if ((type & javax_media_j3d_Raster_RASTER_DEPTH) != 0) {
GLenum depthType = 0;
depthObjPtr =
(void *)(*(table->GetPrimitiveArrayCritical))(env, (jarray)depthBuffer, NULL);
if (depthFormat == javax_media_j3d_DepthComponentRetained_DEPTH_COMPONENT_TYPE_INT) {
depthType = GL_UNSIGNED_INT;
} else { /* javax_media_j3d_DepthComponentRetained_DEPTH_COMPONENT_TYPE_FLOAT */
depthType = GL_FLOAT;
}
/* yOffset is adjusted for OpenGL - Y upward */
glReadPixels(xOffset, yAdjusted, wRaster, hRaster,
GL_DEPTH_COMPONENT, depthType , depthObjPtr);
(*(table->ReleasePrimitiveArrayCritical))(env, depthBuffer, depthObjPtr, 0);
}
}
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