llrender.cpp
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上传日期:2021-03-01
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- /**
- * @file llrender.cpp
- * @brief LLRender implementation
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- #include "llrender.h"
- #include "llvertexbuffer.h"
- #include "llcubemap.h"
- #include "llimagegl.h"
- #include "llrendertarget.h"
- #include "lltexture.h"
- LLRender gGL;
- // Handy copies of last good GL matrices
- F64 gGLModelView[16];
- F64 gGLLastModelView[16];
- F64 gGLLastProjection[16];
- F64 gGLProjection[16];
- S32 gGLViewport[4];
- static const U32 LL_NUM_TEXTURE_LAYERS = 16;
- static GLenum sGLTextureType[] =
- {
- GL_TEXTURE_2D,
- GL_TEXTURE_RECTANGLE_ARB,
- GL_TEXTURE_CUBE_MAP_ARB
- };
- static GLint sGLAddressMode[] =
- {
- GL_REPEAT,
- GL_MIRRORED_REPEAT,
- GL_CLAMP_TO_EDGE
- };
- static GLenum sGLCompareFunc[] =
- {
- GL_NEVER,
- GL_ALWAYS,
- GL_LESS,
- GL_LEQUAL,
- GL_EQUAL,
- GL_NOTEQUAL,
- GL_GEQUAL,
- GL_GREATER
- };
- const U32 immediate_mask = LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_COLOR | LLVertexBuffer::MAP_TEXCOORD0;
- static GLenum sGLBlendFactor[] =
- {
- GL_ONE,
- GL_ZERO,
- GL_DST_COLOR,
- GL_SRC_COLOR,
- GL_ONE_MINUS_DST_COLOR,
- GL_ONE_MINUS_SRC_COLOR,
- GL_DST_ALPHA,
- GL_SRC_ALPHA,
- GL_ONE_MINUS_DST_ALPHA,
- GL_ONE_MINUS_SRC_ALPHA
- };
- LLTexUnit::LLTexUnit(S32 index)
- : mCurrTexType(TT_NONE), mCurrBlendType(TB_MULT),
- mCurrColorOp(TBO_MULT), mCurrAlphaOp(TBO_MULT),
- mCurrColorSrc1(TBS_TEX_COLOR), mCurrColorSrc2(TBS_PREV_COLOR),
- mCurrAlphaSrc1(TBS_TEX_ALPHA), mCurrAlphaSrc2(TBS_PREV_ALPHA),
- mCurrColorScale(1), mCurrAlphaScale(1), mCurrTexture(0),
- mHasMipMaps(false)
- {
- llassert_always(index < (S32)LL_NUM_TEXTURE_LAYERS);
- mIndex = index;
- }
- //static
- U32 LLTexUnit::getInternalType(eTextureType type)
- {
- return sGLTextureType[type];
- }
- void LLTexUnit::refreshState(void)
- {
- // We set dirty to true so that the tex unit knows to ignore caching
- // and we reset the cached tex unit state
- glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
- if (mCurrTexType != TT_NONE)
- {
- glEnable(sGLTextureType[mCurrTexType]);
- glBindTexture(sGLTextureType[mCurrTexType], mCurrTexture);
- }
- else
- {
- glDisable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, 0);
- }
- if (mCurrBlendType != TB_COMBINE)
- {
- setTextureBlendType(mCurrBlendType);
- }
- else
- {
- setTextureCombiner(mCurrColorOp, mCurrColorSrc1, mCurrColorSrc2, false);
- setTextureCombiner(mCurrAlphaOp, mCurrAlphaSrc1, mCurrAlphaSrc2, true);
- }
- }
- void LLTexUnit::activate(void)
- {
- if (mIndex < 0) return;
- if ((S32)gGL.mCurrTextureUnitIndex != mIndex || gGL.mDirty)
- {
- glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
- gGL.mCurrTextureUnitIndex = mIndex;
- }
- }
- void LLTexUnit::enable(eTextureType type)
- {
- if (mIndex < 0) return;
- if ( (mCurrTexType != type || gGL.mDirty) && (type != TT_NONE) )
- {
- activate();
- if (mCurrTexType != TT_NONE && !gGL.mDirty)
- {
- disable(); // Force a disable of a previous texture type if it's enabled.
- }
- mCurrTexType = type;
- gGL.flush();
- glEnable(sGLTextureType[type]);
- }
- }
- void LLTexUnit::disable(void)
- {
- if (mIndex < 0) return;
- if (mCurrTexType != TT_NONE)
- {
- activate();
- unbind(mCurrTexType);
- glDisable(sGLTextureType[mCurrTexType]);
- mCurrTexType = TT_NONE;
- }
- }
- bool LLTexUnit::bind(LLTexture* texture, bool for_rendering, bool forceBind)
- {
- stop_glerror();
- if (mIndex < 0) return false;
- gGL.flush();
- LLImageGL* gl_tex = NULL ;
- if (texture == NULL || !(gl_tex = texture->getGLTexture()))
- {
- llwarns << "NULL LLTexUnit::bind texture" << llendl;
- return false;
- }
- if (!gl_tex->getTexName()) //if texture does not exist
- {
- //if deleted, will re-generate it immediately
- texture->forceImmediateUpdate() ;
- gl_tex->forceUpdateBindStats() ;
- return texture->bindDefaultImage(mIndex);
- }
- //in audit, replace the selected texture by the default one.
- if(gAuditTexture && for_rendering && LLImageGL::sCurTexPickSize > 0)
- {
- if(texture->getWidth() * texture->getHeight() == LLImageGL::sCurTexPickSize)
- {
- gl_tex->updateBindStats(gl_tex->mTextureMemory);
- return bind(LLImageGL::sHighlightTexturep.get());
- }
- }
- if ((mCurrTexture != gl_tex->getTexName()) || forceBind)
- {
- activate();
- enable(gl_tex->getTarget());
- mCurrTexture = gl_tex->getTexName();
- glBindTexture(sGLTextureType[gl_tex->getTarget()], mCurrTexture);
- if(gl_tex->updateBindStats(gl_tex->mTextureMemory))
- {
- texture->setActive() ;
- texture->updateBindStatsForTester() ;
- }
- mHasMipMaps = gl_tex->mHasMipMaps;
- if (gl_tex->mTexOptionsDirty)
- {
- gl_tex->mTexOptionsDirty = false;
- setTextureAddressMode(gl_tex->mAddressMode);
- setTextureFilteringOption(gl_tex->mFilterOption);
- }
- }
- return true;
- }
- bool LLTexUnit::bind(LLImageGL* texture, bool for_rendering, bool forceBind)
- {
- stop_glerror();
- if (mIndex < 0) return false;
- if(!texture)
- {
- llwarns << "NULL LLTexUnit::bind texture" << llendl;
- return false;
- }
- if(!texture->getTexName())
- {
- if(LLImageGL::sDefaultGLTexture && LLImageGL::sDefaultGLTexture->getTexName())
- {
- return bind(LLImageGL::sDefaultGLTexture) ;
- }
- return false ;
- }
- gGL.flush();
- if ((mCurrTexture != texture->getTexName()) || forceBind)
- {
- activate();
- enable(texture->getTarget());
- mCurrTexture = texture->getTexName();
- glBindTexture(sGLTextureType[texture->getTarget()], mCurrTexture);
- texture->updateBindStats(texture->mTextureMemory);
- mHasMipMaps = texture->mHasMipMaps;
- if (texture->mTexOptionsDirty)
- {
- texture->mTexOptionsDirty = false;
- setTextureAddressMode(texture->mAddressMode);
- setTextureFilteringOption(texture->mFilterOption);
- }
- }
- return true;
- }
- bool LLTexUnit::bind(LLCubeMap* cubeMap)
- {
- if (mIndex < 0) return false;
- gGL.flush();
- if (cubeMap == NULL)
- {
- llwarns << "NULL LLTexUnit::bind cubemap" << llendl;
- return false;
- }
- if (mCurrTexture != cubeMap->mImages[0]->getTexName())
- {
- if (gGLManager.mHasCubeMap && LLCubeMap::sUseCubeMaps)
- {
- activate();
- enable(LLTexUnit::TT_CUBE_MAP);
- mCurrTexture = cubeMap->mImages[0]->getTexName();
- glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, mCurrTexture);
- mHasMipMaps = cubeMap->mImages[0]->mHasMipMaps;
- cubeMap->mImages[0]->updateBindStats(cubeMap->mImages[0]->mTextureMemory);
- if (cubeMap->mImages[0]->mTexOptionsDirty)
- {
- cubeMap->mImages[0]->mTexOptionsDirty = false;
- setTextureAddressMode(cubeMap->mImages[0]->mAddressMode);
- setTextureFilteringOption(cubeMap->mImages[0]->mFilterOption);
- }
- return true;
- }
- else
- {
- llwarns << "Using cube map without extension!" << llendl;
- return false;
- }
- }
- return true;
- }
- // LLRenderTarget is unavailible on the mapserver since it uses FBOs.
- #if !LL_MESA_HEADLESS
- bool LLTexUnit::bind(LLRenderTarget* renderTarget, bool bindDepth)
- {
- if (mIndex < 0) return false;
- gGL.flush();
- if (bindDepth)
- {
- if (renderTarget->hasStencil())
- {
- llerrs << "Cannot bind a render buffer for sampling. Allocate render target without a stencil buffer if sampling of depth buffer is required." << llendl;
- }
- bindManual(renderTarget->getUsage(), renderTarget->getDepth());
- }
- else
- {
- bindManual(renderTarget->getUsage(), renderTarget->getTexture());
- }
- return true;
- }
- #endif // LL_MESA_HEADLESS
- bool LLTexUnit::bindManual(eTextureType type, U32 texture, bool hasMips)
- {
- if (mIndex < 0)
- {
- return false;
- }
-
- if(mCurrTexture != texture)
- {
- gGL.flush();
-
- activate();
- enable(type);
- mCurrTexture = texture;
- glBindTexture(sGLTextureType[type], texture);
- mHasMipMaps = hasMips;
- }
- return true;
- }
- void LLTexUnit::unbind(eTextureType type)
- {
- stop_glerror();
- if (mIndex < 0) return;
- // Disabled caching of binding state.
- if (mCurrTexType == type)
- {
- gGL.flush();
- activate();
- mCurrTexture = 0;
- glBindTexture(sGLTextureType[type], 0);
- }
- }
- void LLTexUnit::setTextureAddressMode(eTextureAddressMode mode)
- {
- if (mIndex < 0 || mCurrTexture == 0) return;
- activate();
- glTexParameteri (sGLTextureType[mCurrTexType], GL_TEXTURE_WRAP_S, sGLAddressMode[mode]);
- glTexParameteri (sGLTextureType[mCurrTexType], GL_TEXTURE_WRAP_T, sGLAddressMode[mode]);
- if (mCurrTexType == TT_CUBE_MAP)
- {
- glTexParameteri (GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_R, sGLAddressMode[mode]);
- }
- }
- void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions option)
- {
- if (mIndex < 0 || mCurrTexture == 0) return;
- if (option == TFO_POINT)
- {
- glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- }
- else
- {
- glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- }
- if (option >= TFO_TRILINEAR && mHasMipMaps)
- {
- glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
- }
- else if (option >= TFO_BILINEAR)
- {
- glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- }
- else
- {
- glTexParameteri(sGLTextureType[mCurrTexType], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- }
- if (gGLManager.mHasAnisotropic)
- {
- if (LLImageGL::sGlobalUseAnisotropic && option == TFO_ANISOTROPIC)
- {
- if (gGL.mMaxAnisotropy < 1.f)
- {
- glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gGL.mMaxAnisotropy);
- }
- glTexParameterf(sGLTextureType[mCurrTexType], GL_TEXTURE_MAX_ANISOTROPY_EXT, gGL.mMaxAnisotropy);
- }
- else
- {
- glTexParameterf(sGLTextureType[mCurrTexType], GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);
- }
- }
- }
- void LLTexUnit::setTextureBlendType(eTextureBlendType type)
- {
- if (mIndex < 0) return;
- // Do nothing if it's already correctly set.
- if (mCurrBlendType == type && !gGL.mDirty)
- {
- return;
- }
- activate();
- mCurrBlendType = type;
- S32 scale_amount = 1;
- switch (type)
- {
- case TB_REPLACE:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- break;
- case TB_ADD:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
- break;
- case TB_MULT:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- break;
- case TB_MULT_X2:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- scale_amount = 2;
- break;
- case TB_ALPHA_BLEND:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
- break;
- case TB_COMBINE:
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
- break;
- default:
- llerrs << "Unknown Texture Blend Type: " << type << llendl;
- break;
- }
- setColorScale(scale_amount);
- setAlphaScale(1);
- }
- GLint LLTexUnit::getTextureSource(eTextureBlendSrc src)
- {
- switch(src)
- {
- // All four cases should return the same value.
- case TBS_PREV_COLOR:
- case TBS_PREV_ALPHA:
- case TBS_ONE_MINUS_PREV_COLOR:
- case TBS_ONE_MINUS_PREV_ALPHA:
- return GL_PREVIOUS_ARB;
- // All four cases should return the same value.
- case TBS_TEX_COLOR:
- case TBS_TEX_ALPHA:
- case TBS_ONE_MINUS_TEX_COLOR:
- case TBS_ONE_MINUS_TEX_ALPHA:
- return GL_TEXTURE;
- // All four cases should return the same value.
- case TBS_VERT_COLOR:
- case TBS_VERT_ALPHA:
- case TBS_ONE_MINUS_VERT_COLOR:
- case TBS_ONE_MINUS_VERT_ALPHA:
- return GL_PRIMARY_COLOR_ARB;
- // All four cases should return the same value.
- case TBS_CONST_COLOR:
- case TBS_CONST_ALPHA:
- case TBS_ONE_MINUS_CONST_COLOR:
- case TBS_ONE_MINUS_CONST_ALPHA:
- return GL_CONSTANT_ARB;
- default:
- llwarns << "Unknown eTextureBlendSrc: " << src << ". Using Vertex Color instead." << llendl;
- return GL_PRIMARY_COLOR_ARB;
- }
- }
- GLint LLTexUnit::getTextureSourceType(eTextureBlendSrc src, bool isAlpha)
- {
- switch(src)
- {
- // All four cases should return the same value.
- case TBS_PREV_COLOR:
- case TBS_TEX_COLOR:
- case TBS_VERT_COLOR:
- case TBS_CONST_COLOR:
- return (isAlpha) ? GL_SRC_ALPHA: GL_SRC_COLOR;
- // All four cases should return the same value.
- case TBS_PREV_ALPHA:
- case TBS_TEX_ALPHA:
- case TBS_VERT_ALPHA:
- case TBS_CONST_ALPHA:
- return GL_SRC_ALPHA;
- // All four cases should return the same value.
- case TBS_ONE_MINUS_PREV_COLOR:
- case TBS_ONE_MINUS_TEX_COLOR:
- case TBS_ONE_MINUS_VERT_COLOR:
- case TBS_ONE_MINUS_CONST_COLOR:
- return (isAlpha) ? GL_ONE_MINUS_SRC_ALPHA : GL_ONE_MINUS_SRC_COLOR;
- // All four cases should return the same value.
- case TBS_ONE_MINUS_PREV_ALPHA:
- case TBS_ONE_MINUS_TEX_ALPHA:
- case TBS_ONE_MINUS_VERT_ALPHA:
- case TBS_ONE_MINUS_CONST_ALPHA:
- return GL_ONE_MINUS_SRC_ALPHA;
- default:
- llwarns << "Unknown eTextureBlendSrc: " << src << ". Using Source Color or Alpha instead." << llendl;
- return (isAlpha) ? GL_SRC_ALPHA: GL_SRC_COLOR;
- }
- }
- void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha)
- {
- if (mIndex < 0) return;
- activate();
- if (mCurrBlendType != TB_COMBINE || gGL.mDirty)
- {
- mCurrBlendType = TB_COMBINE;
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
- }
- // We want an early out, because this function does a LOT of stuff.
- if ( ( (isAlpha && (mCurrAlphaOp == op) && (mCurrAlphaSrc1 == src1) && (mCurrAlphaSrc2 == src2))
- || (!isAlpha && (mCurrColorOp == op) && (mCurrColorSrc1 == src1) && (mCurrColorSrc2 == src2)) ) && !gGL.mDirty)
- {
- return;
- }
- // 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),
- mCurrTextureUnitIndex(0),
- 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 < 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)
- {
- color4f(c[0],c[1],c[2],c[3]);
- }
- void LLRender::color3f(const GLfloat& r, const GLfloat& g, const GLfloat& b)
- {
- color4f(r,g,b,1);
- }
- void LLRender::color3fv(const GLfloat* c)
- {
- color4f(c[0],c[1],c[2],1);
- }
- void LLRender::debugTexUnits(void)
- {
- LL_INFOS("TextureUnit") << "Active TexUnit: " << mCurrTextureUnitIndex << LL_ENDL;
- std::string active_enabled = "false";
- for (U32 i = 0; i < mTexUnits.size(); i++)
- {
- 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;
- }