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
gGL.flush();
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::setColorScale(S32 scale)
{
if (mCurrColorScale != scale || gGL.mDirty)
{
mCurrColorScale = scale;
gGL.flush();
glTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE, scale );
}
}
void LLTexUnit::setAlphaScale(S32 scale)
{
if (mCurrAlphaScale != scale || gGL.mDirty)
{
mCurrAlphaScale = scale;
gGL.flush();
glTexEnvi( GL_TEXTURE_ENV, GL_ALPHA_SCALE, scale );
}
}
void LLTexUnit::activate(void)
{
if (mIndex < 0) return;
if ((S32)gGL.mCurrTextureUnitIndex != mIndex || gGL.mDirty)
{
gGL.flush();
glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
gGL.mCurrTextureUnitIndex = mIndex;
}
}
bool LLTexUnit::bind(LLImageGL* texture, bool for_rendering, bool forceBind)
{
stop_glerror();
if (mIndex < 0) return false;
gGL.flush();
if (texture == NULL)
{
llwarns << "NULL LLTexUnit::bind texture" << llendl;
return false;
}
if (!texture->getTexName()) //if texture does not exist
{
//if deleted, will re-generate it immediately
texture->forceImmediateUpdate() ;
return texture->bindDefaultImage(mIndex);
}
#if !LL_RELEASE_FOR_DOWNLOAD
if(for_rendering)
{
int w = texture->getWidth(texture->getDiscardLevel()) ;
int h = texture->getHeight(texture->getDiscardLevel()) ;
if(w * h == LLImageGL::sCurTexPickSize)
{
texture->updateBindStats();
return bind(LLImageGL::sDefaultTexturep.get());
}
}
#endif
if ((mCurrTexture != texture->getTexName()) || forceBind)
{
activate();
enable(texture->getTarget());
mCurrTexture = texture->getTexName();
glBindTexture(sGLTextureType[texture->getTarget()], mCurrTexture);
texture->updateBindStats();
texture->setActive() ;
mHasMipMaps = texture->mHasMipMaps;
if (texture->mTexOptionsDirty)
{
texture->mTexOptionsDirty = false;
setTextureAddressMode(texture->mAddressMode);
setTextureFilteringOption(texture->mFilterOption);
}
}
return true;
}
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;
}
void LLTexUnit::disable(void)
{
if (mIndex < 0) return;
if (mCurrTexType != TT_NONE)
{
activate();
unbind(mCurrTexType);
gGL.flush();
glDisable(sGLTextureType[mCurrTexType]);
mCurrTexType = TT_NONE;
}
}
void LLTexUnit::setTextureAddressMode(eTextureAddressMode mode)
{
if (mIndex < 0 || mCurrTexture == 0) return;
gGL.flush();
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]);
}
}
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::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions option)
{
if (mIndex < 0 || mCurrTexture == 0) return;
gGL.flush();
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);
llinfos << "gGL.mMaxAnisotropy: " << gGL.mMaxAnisotropy << llendl ;
gGL.mMaxAnisotropy = llmax(1.f, 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::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::refreshState(void)
{
// We set dirty to true so that the tex unit knows to ignore caching
// and we reset the cached tex unit state
gGL.flush();
glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
//
// Per apple spec, don't call glEnable/glDisable when index exceeds max texture units
// http://www.mailinglistarchive.com/html/[email protected]/2008-07/msg00653.html
//
bool enableDisable = (mIndex < gGLManager.mNumTextureUnits);
if (mCurrTexType != TT_NONE)
{
if (enableDisable)
{
glEnable(sGLTextureType[mCurrTexType]);
}
glBindTexture(sGLTextureType[mCurrTexType], mCurrTexture);
}
else
{
if (enableDisable)
{
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::setTextureBlendType(eTextureBlendType type)
{
if (mIndex < 0) return;
// Do nothing if it's already correctly set.
if (mCurrBlendType == type && !gGL.mDirty)
{
return;
}
gGL.flush();
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);
}
bool LLTexUnit::bind(LLCubeMap* cubeMap)
{
if (mIndex < 0) return false;
gGL.flush();
if (cubeMap == NULL)
{
llwarns << "NULL LLTexUnit::bind cubemap" << llendl;
return false;
}
if (cubeMap->mImages[0].isNull())
{
llwarns << "NULL LLTexUnit::bind cubeMap->mImages[0]" << 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;
}
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;
}
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 ;
}
if ((mCurrTexture != texture->getTexName()) || forceBind)
{
gGL.flush();
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;
}
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;
gGL.flush();
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;
}
gGL.flush();
// 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);
}
