static enum piglit_result
do_copy()
{
GLuint buffer_handles[2];
glGenBuffersARB(2, buffer_handles);
glBindBufferARB(GL_COPY_READ_BUFFER, buffer_handles[0]);
glBindBufferARB(GL_COPY_WRITE_BUFFER, buffer_handles[1]);
glBufferData(GL_COPY_READ_BUFFER, COPY_BUFFER_SIZE, src_data,
GL_STREAM_COPY);
glBufferData(GL_COPY_WRITE_BUFFER, COPY_BUFFER_SIZE, NULL,
GL_STREAM_READ);
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, 0, 0,
COPY_BUFFER_SIZE);
glGetBufferSubDataARB(GL_COPY_WRITE_BUFFER, 0, COPY_BUFFER_SIZE,
dest_data);
if (memcmp(src_data, dest_data, COPY_BUFFER_SIZE) != 0)
return PIGLIT_FAIL;
return PIGLIT_PASS;
}
void *VBO::map()
{
// mapping twice could result in memory leaks
if (mapped)
throw love::Exception("VBO is already mapped!");
mapped = malloc(getSize());
if (!mapped)
throw love::Exception("Out of memory (oh the humanity!)");
glGetBufferSubDataARB(getTarget(), 0, getSize(), mapped);
return mapped;
}
//---------------------------------------------------------------------
void GLHardwareIndexBuffer::readData(size_t offset, size_t length,
void* pDest)
{
if(mUseShadowBuffer)
{
// get data from the shadow buffer
void* srcData = mpShadowBuffer->lock(offset, length, HBL_READ_ONLY);
memcpy(pDest, srcData, length);
mpShadowBuffer->unlock();
}
else
{
glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, mBufferId );
glGetBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, pDest);
}
}
//---------------------------------------------------------------------
void GLHardwareVertexBuffer::readData(size_t offset, size_t length,
void* pDest)
{
if(mUseShadowBuffer)
{
// get data from the shadow buffer
void* srcData = mShadowBuffer->lock(offset, length, HBL_READ_ONLY);
memcpy(pDest, srcData, length);
mShadowBuffer->unlock();
}
else
{
// get data from the real buffer
static_cast<GLHardwareBufferManagerBase*>(mMgr)->getStateCacheManager()->bindGLBuffer(GL_ARRAY_BUFFER_ARB, mBufferId);
glGetBufferSubDataARB(GL_ARRAY_BUFFER_ARB, offset, length, pDest);
}
}
void *VBO::map()
{
if (is_mapped)
return memory_map;
if (!memory_map)
{
memory_map = malloc(getSize());
if (!memory_map)
throw love::Exception("Out of memory (oh the humanity!)");
}
if (is_dirty)
glGetBufferSubDataARB(getTarget(), 0, getSize(), memory_map);
is_mapped = true;
is_dirty = false;
return memory_map;
}
void PixelBuffer::getSubData ( unsigned offs , unsigned size , void * data )
{
// TODO Tests if the Buffer is bound. Is this really important ?
glGetBufferSubDataARB ( target_ , offs , size , data );
}
void VertexBuffer::readData(uint offset,uint length,void* pDest)
{
glBindBufferARB(GL_ARRAY_BUFFER,m_ui32BufferID);
glGetBufferSubDataARB(GL_ARRAY_BUFFER,offset,length,pDest);
glBindBufferARB(GL_ARRAY_BUFFER,0);
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBBufferObject_nglGetBufferSubDataARB(JNIEnv *env, jclass clazz, jint target, jlong offset, jlong size, jlong data, jlong function_pointer) {
GLvoid *data_address = (GLvoid *)(intptr_t)data;
glGetBufferSubDataARBPROC glGetBufferSubDataARB = (glGetBufferSubDataARBPROC)((intptr_t)function_pointer);
glGetBufferSubDataARB(target, offset, size, data_address);
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBBufferObject_nglGetBufferSubDataARB(JNIEnv *env, jclass clazz, jint target, jlong offset, jlong size, jobject data, jint data_position, jlong function_pointer) {
GLvoid *data_address = ((GLvoid *)(((char *)(*env)->GetDirectBufferAddress(env, data)) + data_position));
glGetBufferSubDataARBPROC glGetBufferSubDataARB = (glGetBufferSubDataARBPROC)((intptr_t)function_pointer);
glGetBufferSubDataARB(target, offset, size, data_address);
}
void DiGLIndexBuffer::ReadData(uint32 offset, uint32 length, void* pDest)
{
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, mBufferId);
glGetBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, pDest);
}
