1083 lines
25 KiB
C++
1083 lines
25 KiB
C++
/**
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* @file llrender.cpp
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* @brief LLRender implementation
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llrender.h"
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#include "llvertexbuffer.h"
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#include "llcubemap.h"
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#include "llimagegl.h"
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#include "llrendertarget.h"
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LLRender gGL;
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// Handy copies of last good GL matrices
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F64 gGLModelView[16];
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F64 gGLLastModelView[16];
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F64 gGLProjection[16];
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S32 gGLViewport[4];
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static const U32 LL_NUM_TEXTURE_LAYERS = 8;
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static GLenum sGLTextureType[] =
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{
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GL_TEXTURE_2D,
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GL_TEXTURE_RECTANGLE_ARB,
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GL_TEXTURE_CUBE_MAP_ARB
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};
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static GLint sGLAddressMode[] =
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{
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GL_REPEAT,
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GL_MIRRORED_REPEAT,
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GL_CLAMP_TO_EDGE
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};
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static GLenum sGLCompareFunc[] =
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{
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GL_NEVER,
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GL_ALWAYS,
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GL_LESS,
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GL_LEQUAL,
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GL_EQUAL,
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GL_NOTEQUAL,
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GL_GEQUAL,
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GL_GREATER
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};
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const U32 immediate_mask = LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_COLOR | LLVertexBuffer::MAP_TEXCOORD0;
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static GLenum sGLBlendFactor[] =
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{
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GL_ONE,
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GL_ZERO,
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GL_DST_COLOR,
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GL_SRC_COLOR,
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GL_ONE_MINUS_DST_COLOR,
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GL_ONE_MINUS_SRC_COLOR,
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GL_DST_ALPHA,
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GL_SRC_ALPHA,
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GL_ONE_MINUS_DST_ALPHA,
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GL_ONE_MINUS_SRC_ALPHA
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};
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LLTexUnit::LLTexUnit(S32 index)
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: mCurrTexType(TT_NONE), mCurrBlendType(TB_MULT),
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mCurrColorOp(TBO_MULT), mCurrAlphaOp(TBO_MULT),
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mCurrColorSrc1(TBS_TEX_COLOR), mCurrColorSrc2(TBS_PREV_COLOR),
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mCurrAlphaSrc1(TBS_TEX_ALPHA), mCurrAlphaSrc2(TBS_PREV_ALPHA),
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mCurrColorScale(1), mCurrAlphaScale(1), mCurrTexture(0),
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mHasMipMaps(false)
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{
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llassert_always(index < LL_NUM_TEXTURE_LAYERS);
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mIndex = index;
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}
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//static
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U32 LLTexUnit::getInternalType(eTextureType type)
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{
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return sGLTextureType[type];
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}
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void LLTexUnit::refreshState(void)
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{
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// We set dirty to true so that the tex unit knows to ignore caching
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// and we reset the cached tex unit state
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glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
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if (mCurrTexType != TT_NONE)
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{
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glEnable(sGLTextureType[mCurrTexType]);
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glBindTexture(sGLTextureType[mCurrTexType], mCurrTexture);
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}
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else
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{
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glDisable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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if (mCurrBlendType != TB_COMBINE)
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{
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setTextureBlendType(mCurrBlendType);
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}
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else
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{
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setTextureCombiner(mCurrColorOp, mCurrColorSrc1, mCurrColorSrc2, false);
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setTextureCombiner(mCurrAlphaOp, mCurrAlphaSrc1, mCurrAlphaSrc2, true);
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}
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}
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void LLTexUnit::activate(void)
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{
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if (mIndex < 0) return;
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if (gGL.mCurrTextureUnitIndex != mIndex || gGL.mDirty)
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{
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glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
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gGL.mCurrTextureUnitIndex = mIndex;
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}
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}
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void LLTexUnit::enable(eTextureType type)
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{
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if (mIndex < 0) return;
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if ( (mCurrTexType != type || gGL.mDirty) && (type != TT_NONE) )
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{
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activate();
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if (mCurrTexType != TT_NONE && !gGL.mDirty)
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{
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disable(); // Force a disable of a previous texture type if it's enabled.
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}
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mCurrTexType = type;
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glEnable(sGLTextureType[type]);
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}
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}
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void LLTexUnit::disable(void)
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{
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if (mIndex < 0) return;
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if (mCurrTexType != TT_NONE)
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{
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activate();
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unbind(mCurrTexType);
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glDisable(sGLTextureType[mCurrTexType]);
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mCurrTexType = TT_NONE;
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}
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}
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bool LLTexUnit::bind(LLImageGL* texture, bool for_rendering, bool forceBind)
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{
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stop_glerror();
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if (mIndex < 0) return false;
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gGL.flush();
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if (texture == NULL)
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{
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llwarns << "NULL LLTexUnit::bind texture" << llendl;
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return false;
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}
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if (!texture->getTexName()) //if texture does not exist
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{
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if (texture->isDeleted())
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{
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// This will re-generate the texture immediately.
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texture->forceImmediateUpdate() ;
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}
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texture->forceUpdateBindStats() ;
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return texture->bindDefaultImage(mIndex);
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}
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if(gAuditTexture && for_rendering && LLImageGL::sCurTexPickSize > 0)
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{
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if(texture->getWidth() * texture->getHeight() == LLImageGL::sCurTexPickSize)
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{
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texture->updateBindStats();
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return bind(LLImageGL::sDefaultTexturep.get());
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}
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}
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if ((mCurrTexture != texture->getTexName()) || forceBind)
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{
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activate();
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enable(texture->getTarget());
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mCurrTexture = texture->getTexName();
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glBindTexture(sGLTextureType[texture->getTarget()], mCurrTexture);
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texture->updateBindStats();
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texture->setActive() ;
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mHasMipMaps = texture->mHasMipMaps;
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if (texture->mTexOptionsDirty)
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{
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texture->mTexOptionsDirty = false;
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setTextureAddressMode(texture->mAddressMode);
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setTextureFilteringOption(texture->mFilterOption);
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}
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}
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return true;
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}
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bool LLTexUnit::bind(LLCubeMap* cubeMap)
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{
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if (mIndex < 0) return false;
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gGL.flush();
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if (cubeMap == NULL)
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{
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llwarns << "NULL LLTexUnit::bind cubemap" << llendl;
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return false;
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}
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if (mCurrTexture != cubeMap->mImages[0]->getTexName())
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{
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if (gGLManager.mHasCubeMap && LLCubeMap::sUseCubeMaps)
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{
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activate();
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enable(LLTexUnit::TT_CUBE_MAP);
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mCurrTexture = cubeMap->mImages[0]->getTexName();
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glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, mCurrTexture);
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mHasMipMaps = cubeMap->mImages[0]->mHasMipMaps;
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cubeMap->mImages[0]->updateBindStats();
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if (cubeMap->mImages[0]->mTexOptionsDirty)
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{
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cubeMap->mImages[0]->mTexOptionsDirty = false;
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setTextureAddressMode(cubeMap->mImages[0]->mAddressMode);
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setTextureFilteringOption(cubeMap->mImages[0]->mFilterOption);
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}
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return true;
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}
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else
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{
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llwarns << "Using cube map without extension!" << llendl;
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return false;
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}
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}
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return true;
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}
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// LLRenderTarget is unavailible on the mapserver since it uses FBOs.
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#if !LL_MESA_HEADLESS
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bool LLTexUnit::bind(LLRenderTarget* renderTarget, bool bindDepth)
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{
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if (mIndex < 0) return false;
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gGL.flush();
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if (bindDepth)
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{
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bindManual(renderTarget->getUsage(), renderTarget->getDepth());
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}
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else
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{
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bindManual(renderTarget->getUsage(), renderTarget->getTexture());
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}
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return true;
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}
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#endif // LL_MESA_HEADLESS
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bool LLTexUnit::bindManual(eTextureType type, U32 texture, bool hasMips)
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{
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if (mIndex < 0 || mCurrTexture == texture) return false;
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gGL.flush();
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activate();
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enable(type);
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mCurrTexture = texture;
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glBindTexture(sGLTextureType[type], texture);
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mHasMipMaps = hasMips;
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return true;
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}
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void LLTexUnit::unbind(eTextureType type)
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{
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stop_glerror();
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if (mIndex < 0) return;
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// Disabled caching of binding state.
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if (mCurrTexType == type)
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{
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gGL.flush();
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activate();
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mCurrTexture = 0;
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glBindTexture(sGLTextureType[type], 0);
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}
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}
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void LLTexUnit::setTextureAddressMode(eTextureAddressMode mode)
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{
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if (mIndex < 0 || mCurrTexture == 0) return;
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activate();
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glTexParameteri (sGLTextureType[mCurrTexType], GL_TEXTURE_WRAP_S, sGLAddressMode[mode]);
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glTexParameteri (sGLTextureType[mCurrTexType], GL_TEXTURE_WRAP_T, sGLAddressMode[mode]);
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if (mCurrTexType == TT_CUBE_MAP)
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{
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glTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_R, sGLAddressMode[mode]);
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}
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}
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void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions option)
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{
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if (mIndex < 0 || mCurrTexture == 0) return;
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if (option == TFO_POINT)
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{
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glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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}
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else
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{
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glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
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if (option >= TFO_TRILINEAR && mHasMipMaps)
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{
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glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
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}
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else if (option >= TFO_BILINEAR)
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{
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glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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}
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else
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{
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glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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}
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if (gGLManager.mHasAnisotropic)
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{
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if (LLImageGL::sGlobalUseAnisotropic && option == TFO_ANISOTROPIC)
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{
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if (gGL.mMaxAnisotropy < 1.f)
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{
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glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gGL.mMaxAnisotropy);
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}
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glTexParameterf(sGLTextureType[mCurrTexType], GL_TEXTURE_MAX_ANISOTROPY_EXT, gGL.mMaxAnisotropy);
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}
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else
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{
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glTexParameterf(sGLTextureType[mCurrTexType], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
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}
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}
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}
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void LLTexUnit::setTextureBlendType(eTextureBlendType type)
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{
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if (mIndex < 0) return;
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// Do nothing if it's already correctly set.
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if (mCurrBlendType == type && !gGL.mDirty)
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{
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return;
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}
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activate();
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mCurrBlendType = type;
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S32 scale_amount = 1;
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switch (type)
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{
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case TB_REPLACE:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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break;
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case TB_ADD:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
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break;
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case TB_MULT:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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break;
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case TB_MULT_X2:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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scale_amount = 2;
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break;
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case TB_ALPHA_BLEND:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
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break;
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case TB_COMBINE:
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
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break;
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default:
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llerrs << "Unknown Texture Blend Type: " << type << llendl;
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break;
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}
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setColorScale(scale_amount);
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setAlphaScale(1);
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}
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GLint LLTexUnit::getTextureSource(eTextureBlendSrc src)
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{
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switch(src)
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{
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// All four cases should return the same value.
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case TBS_PREV_COLOR:
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case TBS_PREV_ALPHA:
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case TBS_ONE_MINUS_PREV_COLOR:
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case TBS_ONE_MINUS_PREV_ALPHA:
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return GL_PREVIOUS_ARB;
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// All four cases should return the same value.
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case TBS_TEX_COLOR:
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case TBS_TEX_ALPHA:
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case TBS_ONE_MINUS_TEX_COLOR:
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case TBS_ONE_MINUS_TEX_ALPHA:
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return GL_TEXTURE;
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// All four cases should return the same value.
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case TBS_VERT_COLOR:
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case TBS_VERT_ALPHA:
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case TBS_ONE_MINUS_VERT_COLOR:
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case TBS_ONE_MINUS_VERT_ALPHA:
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return GL_PRIMARY_COLOR_ARB;
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// All four cases should return the same value.
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case TBS_CONST_COLOR:
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case TBS_CONST_ALPHA:
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case TBS_ONE_MINUS_CONST_COLOR:
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case TBS_ONE_MINUS_CONST_ALPHA:
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return GL_CONSTANT_ARB;
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default:
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llwarns << "Unknown eTextureBlendSrc: " << src << ". Using Vertex Color instead." << llendl;
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return GL_PRIMARY_COLOR_ARB;
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}
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}
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GLint LLTexUnit::getTextureSourceType(eTextureBlendSrc src, bool isAlpha)
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{
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switch(src)
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{
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// All four cases should return the same value.
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case TBS_PREV_COLOR:
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case TBS_TEX_COLOR:
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case TBS_VERT_COLOR:
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case TBS_CONST_COLOR:
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return (isAlpha) ? GL_SRC_ALPHA: GL_SRC_COLOR;
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// All four cases should return the same value.
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case TBS_PREV_ALPHA:
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case TBS_TEX_ALPHA:
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case TBS_VERT_ALPHA:
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case TBS_CONST_ALPHA:
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return GL_SRC_ALPHA;
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// All four cases should return the same value.
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case TBS_ONE_MINUS_PREV_COLOR:
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case TBS_ONE_MINUS_TEX_COLOR:
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case TBS_ONE_MINUS_VERT_COLOR:
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case TBS_ONE_MINUS_CONST_COLOR:
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return (isAlpha) ? GL_ONE_MINUS_SRC_ALPHA : GL_ONE_MINUS_SRC_COLOR;
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// All four cases should return the same value.
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case TBS_ONE_MINUS_PREV_ALPHA:
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case TBS_ONE_MINUS_TEX_ALPHA:
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case TBS_ONE_MINUS_VERT_ALPHA:
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case TBS_ONE_MINUS_CONST_ALPHA:
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return GL_ONE_MINUS_SRC_ALPHA;
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default:
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llwarns << "Unknown eTextureBlendSrc: " << src << ". Using Source Color or Alpha instead." << llendl;
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return (isAlpha) ? GL_SRC_ALPHA: GL_SRC_COLOR;
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}
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}
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void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha)
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{
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if (mIndex < 0) return;
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activate();
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if (mCurrBlendType != TB_COMBINE || gGL.mDirty)
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{
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mCurrBlendType = TB_COMBINE;
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
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}
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// We want an early out, because this function does a LOT of stuff.
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if ( ( (isAlpha && (mCurrAlphaOp == op) && (mCurrAlphaSrc1 == src1) && (mCurrAlphaSrc2 == src2))
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|| (!isAlpha && (mCurrColorOp == op) && (mCurrColorSrc1 == src1) && (mCurrColorSrc2 == src2)) ) && !gGL.mDirty)
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{
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return;
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}
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// Get the gl source enums according to the eTextureBlendSrc sources passed in
|
|
GLint source1 = getTextureSource(src1);
|
|
GLint source2 = getTextureSource(src2);
|
|
// Get the gl operand enums according to the eTextureBlendSrc sources passed in
|
|
GLint operand1 = getTextureSourceType(src1, isAlpha);
|
|
GLint operand2 = getTextureSourceType(src2, isAlpha);
|
|
// Default the scale amount to 1
|
|
S32 scale_amount = 1;
|
|
GLenum comb_enum, src0_enum, src1_enum, src2_enum, operand0_enum, operand1_enum, operand2_enum;
|
|
|
|
if (isAlpha)
|
|
{
|
|
// Set enums to ALPHA ones
|
|
comb_enum = GL_COMBINE_ALPHA_ARB;
|
|
src0_enum = GL_SOURCE0_ALPHA_ARB;
|
|
src1_enum = GL_SOURCE1_ALPHA_ARB;
|
|
src2_enum = GL_SOURCE2_ALPHA_ARB;
|
|
operand0_enum = GL_OPERAND0_ALPHA_ARB;
|
|
operand1_enum = GL_OPERAND1_ALPHA_ARB;
|
|
operand2_enum = GL_OPERAND2_ALPHA_ARB;
|
|
|
|
// cache current combiner
|
|
mCurrAlphaOp = op;
|
|
mCurrAlphaSrc1 = src1;
|
|
mCurrAlphaSrc2 = src2;
|
|
}
|
|
else
|
|
{
|
|
// Set enums to RGB ones
|
|
comb_enum = GL_COMBINE_RGB_ARB;
|
|
src0_enum = GL_SOURCE0_RGB_ARB;
|
|
src1_enum = GL_SOURCE1_RGB_ARB;
|
|
src2_enum = GL_SOURCE2_RGB_ARB;
|
|
operand0_enum = GL_OPERAND0_RGB_ARB;
|
|
operand1_enum = GL_OPERAND1_RGB_ARB;
|
|
operand2_enum = GL_OPERAND2_RGB_ARB;
|
|
|
|
// cache current combiner
|
|
mCurrColorOp = op;
|
|
mCurrColorSrc1 = src1;
|
|
mCurrColorSrc2 = src2;
|
|
}
|
|
|
|
switch(op)
|
|
{
|
|
case TBO_REPLACE:
|
|
// Slightly special syntax (no second sources), just set all and return.
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_REPLACE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
|
|
(isAlpha) ? setAlphaScale(1) : setColorScale(1);
|
|
return;
|
|
|
|
case TBO_MULT:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
|
|
break;
|
|
|
|
case TBO_MULT_X2:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
|
|
scale_amount = 2;
|
|
break;
|
|
|
|
case TBO_MULT_X4:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
|
|
scale_amount = 4;
|
|
break;
|
|
|
|
case TBO_ADD:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_ADD);
|
|
break;
|
|
|
|
case TBO_ADD_SIGNED:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_ADD_SIGNED_ARB);
|
|
break;
|
|
|
|
case TBO_SUBTRACT:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_SUBTRACT_ARB);
|
|
break;
|
|
|
|
case TBO_LERP_VERT_ALPHA:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PRIMARY_COLOR_ARB);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
|
|
break;
|
|
|
|
case TBO_LERP_TEX_ALPHA:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_TEXTURE);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
|
|
break;
|
|
|
|
case TBO_LERP_PREV_ALPHA:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PREVIOUS_ARB);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
|
|
break;
|
|
|
|
case TBO_LERP_CONST_ALPHA:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_CONSTANT_ARB);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
|
|
break;
|
|
|
|
case TBO_LERP_VERT_COLOR:
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PRIMARY_COLOR_ARB);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand2_enum, (isAlpha) ? GL_SRC_ALPHA : GL_SRC_COLOR);
|
|
break;
|
|
|
|
default:
|
|
llwarns << "Unknown eTextureBlendOp: " << op << ". Setting op to replace." << llendl;
|
|
// Slightly special syntax (no second sources), just set all and return.
|
|
glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_REPLACE);
|
|
glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
|
|
(isAlpha) ? setAlphaScale(1) : setColorScale(1);
|
|
return;
|
|
}
|
|
|
|
// Set sources, operands, and scale accordingly
|
|
glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
|
|
glTexEnvi(GL_TEXTURE_ENV, src1_enum, source2);
|
|
glTexEnvi(GL_TEXTURE_ENV, operand1_enum, operand2);
|
|
(isAlpha) ? setAlphaScale(scale_amount) : setColorScale(scale_amount);
|
|
}
|
|
|
|
void LLTexUnit::setColorScale(S32 scale)
|
|
{
|
|
if (mCurrColorScale != scale || gGL.mDirty)
|
|
{
|
|
mCurrColorScale = scale;
|
|
glTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE, scale );
|
|
}
|
|
}
|
|
|
|
void LLTexUnit::setAlphaScale(S32 scale)
|
|
{
|
|
if (mCurrAlphaScale != scale || gGL.mDirty)
|
|
{
|
|
mCurrAlphaScale = scale;
|
|
glTexEnvi( GL_TEXTURE_ENV, GL_ALPHA_SCALE, scale );
|
|
}
|
|
}
|
|
|
|
// Useful for debugging that you've manually assigned a texture operation to the correct
|
|
// texture unit based on the currently set active texture in opengl.
|
|
void LLTexUnit::debugTextureUnit(void)
|
|
{
|
|
if (mIndex < 0) return;
|
|
|
|
GLint activeTexture;
|
|
glGetIntegerv(GL_ACTIVE_TEXTURE_ARB, &activeTexture);
|
|
if ((GL_TEXTURE0_ARB + mIndex) != activeTexture)
|
|
{
|
|
U32 set_unit = (activeTexture - GL_TEXTURE0_ARB);
|
|
llwarns << "Incorrect Texture Unit! Expected: " << set_unit << " Actual: " << mIndex << llendl;
|
|
}
|
|
}
|
|
|
|
|
|
LLRender::LLRender()
|
|
: mDirty(false), mCount(0), mMode(LLRender::TRIANGLES),
|
|
mMaxAnisotropy(0.f)
|
|
{
|
|
mBuffer = new LLVertexBuffer(immediate_mask, 0);
|
|
mBuffer->allocateBuffer(4096, 0, TRUE);
|
|
mBuffer->getVertexStrider(mVerticesp);
|
|
mBuffer->getTexCoord0Strider(mTexcoordsp);
|
|
mBuffer->getColorStrider(mColorsp);
|
|
|
|
mTexUnits.reserve(LL_NUM_TEXTURE_LAYERS);
|
|
for (U32 i = 0; i < LL_NUM_TEXTURE_LAYERS; i++)
|
|
{
|
|
mTexUnits.push_back(new LLTexUnit(i));
|
|
}
|
|
mDummyTexUnit = new LLTexUnit(-1);
|
|
|
|
for (U32 i = 0; i < 4; i++)
|
|
{
|
|
mCurrColorMask[i] = true;
|
|
}
|
|
|
|
mCurrAlphaFunc = CF_DEFAULT;
|
|
mCurrAlphaFuncVal = 0.01f;
|
|
}
|
|
|
|
LLRender::~LLRender()
|
|
{
|
|
shutdown();
|
|
}
|
|
|
|
void LLRender::shutdown()
|
|
{
|
|
for (U32 i = 0; i < mTexUnits.size(); i++)
|
|
{
|
|
delete mTexUnits[i];
|
|
}
|
|
mTexUnits.clear();
|
|
delete mDummyTexUnit;
|
|
mDummyTexUnit = NULL;
|
|
}
|
|
|
|
void LLRender::refreshState(void)
|
|
{
|
|
mDirty = true;
|
|
|
|
U32 active_unit = mCurrTextureUnitIndex;
|
|
|
|
for (U32 i = 0; i < mTexUnits.size(); i++)
|
|
{
|
|
mTexUnits[i]->refreshState();
|
|
}
|
|
|
|
mTexUnits[active_unit]->activate();
|
|
|
|
setColorMask(mCurrColorMask[0], mCurrColorMask[1], mCurrColorMask[2], mCurrColorMask[3]);
|
|
|
|
setAlphaRejectSettings(mCurrAlphaFunc, mCurrAlphaFuncVal);
|
|
|
|
mDirty = false;
|
|
}
|
|
|
|
void LLRender::translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z)
|
|
{
|
|
flush();
|
|
glTranslatef(x,y,z);
|
|
}
|
|
|
|
void LLRender::scalef(const GLfloat& x, const GLfloat& y, const GLfloat& z)
|
|
{
|
|
flush();
|
|
glScalef(x,y,z);
|
|
}
|
|
|
|
void LLRender::pushMatrix()
|
|
{
|
|
flush();
|
|
glPushMatrix();
|
|
}
|
|
|
|
void LLRender::popMatrix()
|
|
{
|
|
flush();
|
|
glPopMatrix();
|
|
}
|
|
|
|
void LLRender::setColorMask(bool writeColor, bool writeAlpha)
|
|
{
|
|
setColorMask(writeColor, writeColor, writeColor, writeAlpha);
|
|
}
|
|
|
|
void LLRender::setColorMask(bool writeColorR, bool writeColorG, bool writeColorB, bool writeAlpha)
|
|
{
|
|
flush();
|
|
|
|
mCurrColorMask[0] = writeColorR;
|
|
mCurrColorMask[1] = writeColorG;
|
|
mCurrColorMask[2] = writeColorB;
|
|
mCurrColorMask[3] = writeAlpha;
|
|
|
|
glColorMask(writeColorR ? GL_TRUE : GL_FALSE,
|
|
writeColorG ? GL_TRUE : GL_FALSE,
|
|
writeColorB ? GL_TRUE : GL_FALSE,
|
|
writeAlpha ? GL_TRUE : GL_FALSE);
|
|
}
|
|
|
|
void LLRender::setSceneBlendType(eBlendType type)
|
|
{
|
|
flush();
|
|
switch (type)
|
|
{
|
|
case BT_ALPHA:
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
break;
|
|
case BT_ADD:
|
|
glBlendFunc(GL_ONE, GL_ONE);
|
|
break;
|
|
case BT_ADD_WITH_ALPHA:
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
|
|
break;
|
|
case BT_MULT:
|
|
glBlendFunc(GL_DST_COLOR, GL_ZERO);
|
|
break;
|
|
case BT_MULT_ALPHA:
|
|
glBlendFunc(GL_DST_ALPHA, GL_ZERO);
|
|
break;
|
|
case BT_MULT_X2:
|
|
glBlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
|
|
break;
|
|
case BT_REPLACE:
|
|
glBlendFunc(GL_ONE, GL_ZERO);
|
|
break;
|
|
default:
|
|
llerrs << "Unknown Scene Blend Type: " << type << llendl;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
|
|
{
|
|
flush();
|
|
|
|
mCurrAlphaFunc = func;
|
|
mCurrAlphaFuncVal = value;
|
|
if (func == CF_DEFAULT)
|
|
{
|
|
glAlphaFunc(GL_GREATER, 0.01f);
|
|
}
|
|
else
|
|
{
|
|
glAlphaFunc(sGLCompareFunc[func], value);
|
|
}
|
|
}
|
|
|
|
void LLRender::blendFunc(eBlendFactor sfactor, eBlendFactor dfactor)
|
|
{
|
|
flush();
|
|
glBlendFunc(sGLBlendFactor[sfactor], sGLBlendFactor[dfactor]);
|
|
}
|
|
|
|
LLTexUnit* LLRender::getTexUnit(U32 index)
|
|
{
|
|
if ((index >= 0) && (index < mTexUnits.size()))
|
|
{
|
|
return mTexUnits[index];
|
|
}
|
|
else
|
|
{
|
|
lldebugs << "Non-existing texture unit layer requested: " << index << llendl;
|
|
return mDummyTexUnit;
|
|
}
|
|
}
|
|
|
|
bool LLRender::verifyTexUnitActive(U32 unitToVerify)
|
|
{
|
|
if (mCurrTextureUnitIndex == unitToVerify)
|
|
{
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
llwarns << "TexUnit currently active: " << mCurrTextureUnitIndex << " (expecting " << unitToVerify << ")" << llendl;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void LLRender::clearErrors()
|
|
{
|
|
while (glGetError())
|
|
{
|
|
//loop until no more error flags left
|
|
}
|
|
}
|
|
|
|
void LLRender::begin(const GLuint& mode)
|
|
{
|
|
if (mode != mMode)
|
|
{
|
|
if (mMode == LLRender::QUADS ||
|
|
mMode == LLRender::LINES ||
|
|
mMode == LLRender::TRIANGLES ||
|
|
mMode == LLRender::POINTS)
|
|
{
|
|
flush();
|
|
}
|
|
else if (mCount != 0)
|
|
{
|
|
llerrs << "gGL.begin() called redundantly." << llendl;
|
|
}
|
|
|
|
mMode = mode;
|
|
}
|
|
}
|
|
|
|
void LLRender::end()
|
|
{
|
|
if (mCount == 0)
|
|
{
|
|
return;
|
|
//IMM_ERRS << "GL begin and end called with no vertices specified." << llendl;
|
|
}
|
|
|
|
if ((mMode != LLRender::QUADS &&
|
|
mMode != LLRender::LINES &&
|
|
mMode != LLRender::TRIANGLES &&
|
|
mMode != LLRender::POINTS) ||
|
|
mCount > 2048)
|
|
{
|
|
flush();
|
|
}
|
|
}
|
|
void LLRender::flush()
|
|
{
|
|
if (mCount > 0)
|
|
{
|
|
#if 0
|
|
if (!glIsEnabled(GL_VERTEX_ARRAY))
|
|
{
|
|
llerrs << "foo 1" << llendl;
|
|
}
|
|
|
|
if (!glIsEnabled(GL_COLOR_ARRAY))
|
|
{
|
|
llerrs << "foo 2" << llendl;
|
|
}
|
|
|
|
if (!glIsEnabled(GL_TEXTURE_COORD_ARRAY))
|
|
{
|
|
llerrs << "foo 3" << llendl;
|
|
}
|
|
|
|
if (glIsEnabled(GL_NORMAL_ARRAY))
|
|
{
|
|
llerrs << "foo 7" << llendl;
|
|
}
|
|
|
|
GLvoid* pointer;
|
|
|
|
glGetPointerv(GL_VERTEX_ARRAY_POINTER, &pointer);
|
|
if (pointer != &(mBuffer[0].v))
|
|
{
|
|
llerrs << "foo 4" << llendl;
|
|
}
|
|
|
|
glGetPointerv(GL_COLOR_ARRAY_POINTER, &pointer);
|
|
if (pointer != &(mBuffer[0].c))
|
|
{
|
|
llerrs << "foo 5" << llendl;
|
|
}
|
|
|
|
glGetPointerv(GL_TEXTURE_COORD_ARRAY_POINTER, &pointer);
|
|
if (pointer != &(mBuffer[0].uv))
|
|
{
|
|
llerrs << "foo 6" << llendl;
|
|
}
|
|
#endif
|
|
|
|
mBuffer->setBuffer(immediate_mask);
|
|
mBuffer->drawArrays(mMode, 0, mCount);
|
|
|
|
mVerticesp[0] = mVerticesp[mCount];
|
|
mTexcoordsp[0] = mTexcoordsp[mCount];
|
|
mColorsp[0] = mColorsp[mCount];
|
|
mCount = 0;
|
|
}
|
|
}
|
|
|
|
void LLRender::vertex3f(const GLfloat& x, const GLfloat& y, const GLfloat& z)
|
|
{
|
|
//the range of mVerticesp, mColorsp and mTexcoordsp is [0, 4095]
|
|
if (mCount > 4094)
|
|
{
|
|
// llwarns << "GL immediate mode overflow. Some geometry not drawn." << llendl;
|
|
return;
|
|
}
|
|
|
|
mVerticesp[mCount] = LLVector3(x,y,z);
|
|
mCount++;
|
|
if (mCount < 4096)
|
|
{
|
|
mVerticesp[mCount] = mVerticesp[mCount-1];
|
|
mColorsp[mCount] = mColorsp[mCount-1];
|
|
mTexcoordsp[mCount] = mTexcoordsp[mCount-1];
|
|
}
|
|
}
|
|
void LLRender::vertex2i(const GLint& x, const GLint& y)
|
|
{
|
|
vertex3f((GLfloat) x, (GLfloat) y, 0);
|
|
}
|
|
|
|
void LLRender::vertex2f(const GLfloat& x, const GLfloat& y)
|
|
{
|
|
vertex3f(x,y,0);
|
|
}
|
|
|
|
void LLRender::vertex2fv(const GLfloat* v)
|
|
{
|
|
vertex3f(v[0], v[1], 0);
|
|
}
|
|
|
|
void LLRender::vertex3fv(const GLfloat* v)
|
|
{
|
|
vertex3f(v[0], v[1], v[2]);
|
|
}
|
|
|
|
void LLRender::texCoord2f(const GLfloat& x, const GLfloat& y)
|
|
{
|
|
mTexcoordsp[mCount] = LLVector2(x,y);
|
|
}
|
|
|
|
void LLRender::texCoord2i(const GLint& x, const GLint& y)
|
|
{
|
|
texCoord2f((GLfloat) x, (GLfloat) y);
|
|
}
|
|
|
|
void LLRender::texCoord2fv(const GLfloat* tc)
|
|
{
|
|
texCoord2f(tc[0], tc[1]);
|
|
}
|
|
|
|
void LLRender::color4ub(const GLubyte& r, const GLubyte& g, const GLubyte& b, const GLubyte& a)
|
|
{
|
|
mColorsp[mCount] = LLColor4U(r,g,b,a);
|
|
}
|
|
void LLRender::color4ubv(const GLubyte* c)
|
|
{
|
|
color4ub(c[0], c[1], c[2], c[3]);
|
|
}
|
|
|
|
void LLRender::color4f(const GLfloat& r, const GLfloat& g, const GLfloat& b, const GLfloat& a)
|
|
{
|
|
color4ub((GLubyte) (llclamp(r, 0.f, 1.f)*255),
|
|
(GLubyte) (llclamp(g, 0.f, 1.f)*255),
|
|
(GLubyte) (llclamp(b, 0.f, 1.f)*255),
|
|
(GLubyte) (llclamp(a, 0.f, 1.f)*255));
|
|
}
|
|
|
|
void LLRender::color4fv(const GLfloat* c)
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{
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color4f(c[0],c[1],c[2],c[3]);
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}
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|
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void LLRender::color3f(const GLfloat& r, const GLfloat& g, const GLfloat& b)
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|
{
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|
color4f(r,g,b,1);
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}
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|
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void LLRender::color3fv(const GLfloat* c)
|
|
{
|
|
color4f(c[0],c[1],c[2],1);
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|
}
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|
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|
void LLRender::debugTexUnits(void)
|
|
{
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|
LL_INFOS("TextureUnit") << "Active TexUnit: " << mCurrTextureUnitIndex << LL_ENDL;
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|
std::string active_enabled = "false";
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|
for (U32 i = 0; i < mTexUnits.size(); i++)
|
|
{
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|
if (getTexUnit(i)->mCurrTexType != LLTexUnit::TT_NONE)
|
|
{
|
|
if (i == mCurrTextureUnitIndex) active_enabled = "true";
|
|
LL_INFOS("TextureUnit") << "TexUnit: " << i << " Enabled" << LL_ENDL;
|
|
LL_INFOS("TextureUnit") << "Enabled As: " ;
|
|
switch (getTexUnit(i)->mCurrTexType)
|
|
{
|
|
case LLTexUnit::TT_TEXTURE:
|
|
LL_CONT << "Texture 2D";
|
|
break;
|
|
case LLTexUnit::TT_RECT_TEXTURE:
|
|
LL_CONT << "Texture Rectangle";
|
|
break;
|
|
case LLTexUnit::TT_CUBE_MAP:
|
|
LL_CONT << "Cube Map";
|
|
break;
|
|
default:
|
|
LL_CONT << "ARGH!!! NONE!";
|
|
break;
|
|
}
|
|
LL_CONT << ", Texture Bound: " << getTexUnit(i)->mCurrTexture << LL_ENDL;
|
|
}
|
|
}
|
|
LL_INFOS("TextureUnit") << "Active TexUnit Enabled : " << active_enabled << LL_ENDL;
|
|
}
|
|
|