230 lines
6.2 KiB
C++
230 lines
6.2 KiB
C++
/**
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* @file lldynamictexture.cpp
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* @brief Implementation of LLDynamicTexture class
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*
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* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "lldynamictexture.h"
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#include "linked_lists.h"
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#include "llimagegl.h"
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#include "llglheaders.h"
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#include "llviewerwindow.h"
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#include "llviewercamera.h"
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#include "llviewercontrol.h"
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#include "llviewerimage.h"
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#include "llvertexbuffer.h"
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// static
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LLLinkedList<LLDynamicTexture> LLDynamicTexture::sInstances[ LLDynamicTexture::ORDER_COUNT ];
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S32 LLDynamicTexture::sNumRenders = 0;
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//-----------------------------------------------------------------------------
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// LLDynamicTexture()
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//-----------------------------------------------------------------------------
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LLDynamicTexture::LLDynamicTexture(S32 width, S32 height, S32 components, EOrder order, BOOL clamp) :
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mWidth(width),
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mHeight(height),
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mComponents(components),
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mTexture(NULL),
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mLastBindTime(0),
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mClamp(clamp)
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{
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llassert((1 <= components) && (components <= 4));
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generateGLTexture();
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llassert( 0 <= order && order < ORDER_COUNT );
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LLDynamicTexture::sInstances[ order ].addData(this);
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}
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//-----------------------------------------------------------------------------
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// LLDynamicTexture()
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//-----------------------------------------------------------------------------
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LLDynamicTexture::~LLDynamicTexture()
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{
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for( S32 order = 0; order < ORDER_COUNT; order++ )
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{
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LLDynamicTexture::sInstances[order].removeData(this); // will fail in all but one case.
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}
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}
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//-----------------------------------------------------------------------------
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// generateGLTexture()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::generateGLTexture()
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{
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if (mComponents < 1 || mComponents > 4)
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{
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llerrs << "Bad number of components in dynamic texture: " << mComponents << llendl;
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}
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LLPointer<LLImageRaw> raw_image = new LLImageRaw(mWidth, mHeight, mComponents);
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mTexture = new LLImageGL(mWidth, mHeight, mComponents, FALSE);
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mTexture->createGLTexture(0, raw_image);
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mTexture->setClamp(mClamp, mClamp);
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}
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void LLDynamicTexture::generateGLTexture(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes)
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{
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if (mComponents < 1 || mComponents > 4)
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{
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llerrs << "Bad number of components in dynamic texture: " << mComponents << llendl;
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}
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LLPointer<LLImageRaw> raw_image = new LLImageRaw(mWidth, mHeight, mComponents);
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mTexture = new LLImageGL(mWidth, mHeight, mComponents, FALSE);
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mTexture->setExplicitFormat(internal_format, primary_format, type_format, swap_bytes);
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mTexture->createGLTexture(0, raw_image);
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mTexture->setClamp(mClamp, mClamp);
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}
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//-----------------------------------------------------------------------------
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// render()
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//-----------------------------------------------------------------------------
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BOOL LLDynamicTexture::render()
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{
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return FALSE;
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}
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//-----------------------------------------------------------------------------
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// preRender()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::preRender(BOOL clear_depth)
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{
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{
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// force rendering to on-screen portion of frame buffer
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LLCoordScreen window_pos;
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gViewerWindow->getWindow()->getPosition( &window_pos );
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mOrigin.set(0, gViewerWindow->getWindowDisplayHeight() - mHeight); // top left corner
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if (window_pos.mX < 0)
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{
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mOrigin.mX = -window_pos.mX;
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}
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if (window_pos.mY < 0)
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{
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mOrigin.mY += window_pos.mY;
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}
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LLImageGL::unbindTexture(0, GL_TEXTURE_2D);
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}
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// Set up camera
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mCamera.setOrigin(*gCamera);
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mCamera.setAxes(*gCamera);
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mCamera.setAspect(gCamera->getAspect());
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mCamera.setView(gCamera->getView());
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mCamera.setNear(gCamera->getNear());
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glViewport(mOrigin.mX, mOrigin.mY, mWidth, mHeight);
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if (clear_depth)
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{
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glClear(GL_DEPTH_BUFFER_BIT);
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}
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}
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//-----------------------------------------------------------------------------
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// postRender()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::postRender(BOOL success)
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{
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{
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if (success)
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{
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success = mTexture->setSubImageFromFrameBuffer(0, 0, mOrigin.mX, mOrigin.mY, mWidth, mHeight);
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}
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}
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// restore viewport
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gViewerWindow->setupViewport();
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// restore camera
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gCamera->setOrigin(mCamera);
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gCamera->setAxes(mCamera);
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gCamera->setAspect(mCamera.getAspect());
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gCamera->setView(mCamera.getView());
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gCamera->setNear(mCamera.getNear());
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}
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//-----------------------------------------------------------------------------
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// bindTexture()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::bindTexture()
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{
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LLViewerImage::bindTexture(mTexture,0);
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}
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void LLDynamicTexture::unbindTexture()
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{
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LLImageGL::unbindTexture(0, GL_TEXTURE_2D);
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}
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//-----------------------------------------------------------------------------
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// static
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// updateDynamicTextures()
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// Calls update on each dynamic texture. Calls each group in order: "first," then "middle," then "last."
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//-----------------------------------------------------------------------------
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BOOL LLDynamicTexture::updateAllInstances()
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{
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sNumRenders = 0;
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if (gGLManager.mIsDisabled)
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{
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return TRUE;
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}
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BOOL started = FALSE;
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BOOL result = FALSE;
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for( S32 order = 0; order < ORDER_COUNT; order++ )
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{
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for (LLDynamicTexture *dynamicTexture = LLDynamicTexture::sInstances[order].getFirstData();
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dynamicTexture;
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dynamicTexture = LLDynamicTexture::sInstances[order].getNextData())
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{
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if (dynamicTexture->needsRender())
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{
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if (!started)
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{
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started = TRUE;
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LLVertexBuffer::startRender();
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}
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dynamicTexture->preRender();
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if (dynamicTexture->render())
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{
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result = TRUE;
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sNumRenders++;
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}
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dynamicTexture->postRender(result);
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}
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}
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}
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if (started)
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{
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LLVertexBuffer::stopRender();
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}
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return result;
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}
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//-----------------------------------------------------------------------------
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// static
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// destroyGL()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::destroyGL()
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{
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}
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//-----------------------------------------------------------------------------
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// static
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// restoreGL()
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//-----------------------------------------------------------------------------
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void LLDynamicTexture::restoreGL()
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{
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}
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