1 files changed, 309 insertions, 53 deletions

diff --git a/linden/indra/llrender/llrender.cpp b/linden/indra/llrender/llrender.cpp
index 7be06af..ff0a2db 100644
--- a/linden/indra/llrender/llrender.cpp
+++ b/linden/indra/llrender/llrender.cpp
@@ -4,7 +4,7 @@
  *
  * $LicenseInfo:firstyear=2001&license=viewergpl$
  * 
- * Copyright (c) 2001-2008, Linden Research, Inc.
+ * Copyright (c) 2001-2009, Linden Research, Inc.
  * 
  * Second Life Viewer Source Code
  * The source code in this file ("Source Code") is provided by Linden Lab
@@ -32,7 +32,11 @@
 #include "linden_common.h"
 
 #include "llrender.h"
+
 #include "llvertexbuffer.h"
+#include "llcubemap.h"
+#include "llimagegl.h"
+#include "llrendertarget.h"
 
 LLRender gGL;
 
@@ -44,6 +48,20 @@ S32	gGLViewport[4];
 
 static const U32 LL_NUM_TEXTURE_LAYERS = 8; 
 
+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,
@@ -72,82 +90,213 @@ static GLenum sGLBlendFactor[] =
         GL_ONE_MINUS_SRC_ALPHA
 };
 
-LLTexUnit::LLTexUnit(U32 index)
-: mIsEnabled(false), mCurrBlendType(TB_MULT), 
+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)
+mCurrColorScale(1), mCurrAlphaScale(1), mCurrTexture(0)
 {
         llassert_always(index < LL_NUM_TEXTURE_LAYERS);
         mIndex = index;
 }
 
-U32 LLTexUnit::getIndex(void)
+//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)
 {
-        return mIndex;
+        if (mIndex < 0) return;
+
+        if (gGL.mCurrTextureUnitIndex != mIndex || gGL.mDirty)
+        {
+                glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
+                gGL.mCurrTextureUnitIndex = mIndex;
+        }
 }
 
-void LLTexUnit::enable(void)
+void LLTexUnit::enable(eTextureType type)
 {
-        if (!mIsEnabled)
+        if (mIndex < 0) return;
+
+        if ( (mCurrTexType != type || gGL.mDirty) && (type != TT_NONE) )
         {
                 activate();
-                glEnable(GL_TEXTURE_2D);
-                mIsEnabled = true;
+                if (mCurrTexType != TT_NONE && !gGL.mDirty)
+                {
+                        disable(); // Force a disable of a previous texture type if it's enabled.
+                }
+                mCurrTexType = type;
+                glEnable(sGLTextureType[type]);
         }
 }
 
 void LLTexUnit::disable(void)
 {
-        if (mIsEnabled)
+        if (mIndex < 0) return;
+
+        if (mCurrTexType != TT_NONE)
         {
                 activate();
-                glDisable(GL_TEXTURE_2D);
-                mIsEnabled = false;
+                unbind(mCurrTexType);
+                glDisable(sGLTextureType[mCurrTexType]);
+                mCurrTexType = TT_NONE;
         }
 }
 
-void LLTexUnit::activate(void)
+bool LLTexUnit::bind(const LLImageGL* texture, bool forceBind)
 {
-        //if (gGL.mCurrTextureUnitIndex != mIndex)
+        if (mIndex < 0) return false;
+
+        gGL.flush();
+
+        if (texture == NULL)
         {
-                glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
-                gGL.mCurrTextureUnitIndex = mIndex;
+                llwarns << "NULL LLTexUnit::bind texture" << llendl;
+                return false;
+        }
+        
+        if (!texture->getTexName()) //if texture does not exist
+        {
+                return texture->bindDefaultImage(mIndex);
         }
+        // Disabled caching of binding state.
+        activate();
+        enable(texture->getTarget());
+        mCurrTexture = texture->getTexName();
+        glBindTexture(sGLTextureType[texture->getTarget()], mCurrTexture);
+        texture->updateBindStats();
+        return true;
 }
 
-// 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)
+bool LLTexUnit::bind(LLCubeMap* cubeMap)
 {
-        GLint activeTexture;
-        glGetIntegerv(GL_ACTIVE_TEXTURE_ARB, &activeTexture);
-        if ((GL_TEXTURE0_ARB + mIndex) != activeTexture)
+        if (mIndex < 0) return false;
+
+        gGL.flush();
+
+        // Disabled caching of binding state.
+        if (cubeMap != NULL)
         {
-                llerrs << "Incorrect Texture Unit!  Expected: " << (activeTexture - GL_TEXTURE0_ARB) << " Actual: " << mIndex << llendl;
+                if (gGLManager.mHasCubeMap && LLCubeMap::sUseCubeMaps)
+                {
+                        activate();
+                        enable(LLTexUnit::TT_CUBE_MAP);
+                        mCurrTexture = cubeMap->mImages[0]->getTexName();
+                        glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, mCurrTexture);
+                        cubeMap->mImages[0]->updateBindStats();
+                        cubeMap->mImages[0]->setMipFilterNearest (FALSE, FALSE);
+                        return true;
+                }
+                else
+                {
+                        llwarns << "Using cube map without extension!" << llendl
+                }
         }
+        return false;
 }
 
-void LLTexUnit::bindTexture(const LLImageGL* texture)
+bool LLTexUnit::bind(LLRenderTarget* renderTarget, bool bindDepth)
 {
-        if (texture != NULL)
+        if (mIndex < 0) return false;
+
+        gGL.flush();
+
+        if (bindDepth)
         {
-                activate();
-                texture->bind(mIndex);
+                bindManual(renderTarget->getUsage(), renderTarget->getDepth());
         }
+        else
+        {
+                bindManual(renderTarget->getUsage(), renderTarget->getTexture());
+        }
+
+        return true;
 }
 
-void LLTexUnit::unbindTexture(void)
+bool LLTexUnit::bindManual(eTextureType type, U32 texture)
 {
+        if (mIndex < 0) return false;
+
+        // Disabled caching of binding state.
+        gGL.flush();
+        
         activate();
-        glBindTexture(GL_TEXTURE_2D, 0);
+        enable(type);
+        mCurrTexture = texture;
+        glBindTexture(sGLTextureType[type], texture);
+        return true;
+}
+
+void LLTexUnit::unbind(eTextureType type)
+{
+        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) return;
+
+        if (true)
+        {
+                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::setTextureBlendType(eTextureBlendType type)
 {
+        if (mIndex < 0) return;
+
         // Do nothing if it's already correctly set.
-        if (mCurrBlendType == type)
+        if (mCurrBlendType == type && !gGL.mDirty)
         {
                 return;
         }
@@ -262,16 +411,18 @@ GLint LLTexUnit::getTextureSourceType(eTextureBlendSrc src, bool isAlpha)
 
 void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha)
 {
+        if (mIndex < 0) return;
+
         activate();
-        if (mCurrBlendType != TB_COMBINE)
+        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) ))
+        if ( ( (isAlpha && (mCurrAlphaOp == op) && (mCurrAlphaSrc1 == src1) && (mCurrAlphaSrc2 == src2))
+                        || (!isAlpha && (mCurrColorOp == op) && (mCurrColorSrc1 == src1) && (mCurrColorSrc2 == src2)) ) && !gGL.mDirty)
         {
                 return;
         }
@@ -304,7 +455,7 @@ void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eT
         }
         else 
         {
-                // Set enums to ALPHA ones
+                // Set enums to RGB ones
                 comb_enum = GL_COMBINE_RGB_ARB;
                 src0_enum = GL_SOURCE0_RGB_ARB;
                 src1_enum = GL_SOURCE1_RGB_ARB;
@@ -405,7 +556,7 @@ void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eT
 
 void LLTexUnit::setColorScale(S32 scale)
 {
-        if (mCurrColorScale != scale)
+        if (mCurrColorScale != scale || gGL.mDirty)
         {
                 mCurrColorScale = scale;
                 glTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE, scale );
@@ -414,27 +565,52 @@ void LLTexUnit::setColorScale(S32 scale)
 
 void LLTexUnit::setAlphaScale(S32 scale)
 {
-        if (mCurrAlphaScale != 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)
 {
-        mCount = 0;
-        mMode = LLVertexBuffer::TRIANGLES;
         mBuffer = new LLVertexBuffer(immediate_mask, 0);
         mBuffer->allocateBuffer(4096, 0, TRUE);
         mBuffer->getVertexStrider(mVerticesp);
         mBuffer->getTexCoordStrider(mTexcoordsp);
         mBuffer->getColorStrider(mColorsp);
-
-        for (unsigned int i = 0; i < LL_NUM_TEXTURE_LAYERS; i++)
+        
+        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()
@@ -449,6 +625,28 @@ void LLRender::shutdown()
                 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)
@@ -483,6 +681,12 @@ void LLRender::setColorMask(bool writeColor, bool 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, writeColorG, writeColorB, writeAlpha);
 }
 
@@ -518,6 +722,9 @@ void LLRender::setSceneBlendType(eBlendType type)
 void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
 {
         flush();
+
+        mCurrAlphaFunc = func;
+        mCurrAlphaFuncVal = value;
         if (func == CF_DEFAULT)
         {
                 glAlphaFunc(GL_GREATER, 0.01f);
@@ -536,22 +743,38 @@ void LLRender::blendFunc(eBlendFactor sfactor, eBlendFactor dfactor)
 
 LLTexUnit* LLRender::getTexUnit(U32 index)
 {
-        if (index < mTexUnits.size())
+        if ((index >= 0) && (index < mTexUnits.size()))
         {
                 return mTexUnits[index];
         }
-        llerrs << "Non-existing texture unit layer requested: " << index << llendl;
-        return NULL;
+        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::begin(const GLuint& mode)
 {
         if (mode != mMode)
         {
-                if (mMode == LLVertexBuffer::QUADS ||
-                        mMode == LLVertexBuffer::LINES ||
-                        mMode == LLVertexBuffer::TRIANGLES ||
-                        mMode == LLVertexBuffer::POINTS)
+                if (mMode == LLRender::QUADS ||
+                        mMode == LLRender::LINES ||
+                        mMode == LLRender::TRIANGLES ||
+                        mMode == LLRender::POINTS)
                 {
                         flush();
                 }
@@ -572,10 +795,10 @@ void LLRender::end()
                 //IMM_ERRS << "GL begin and end called with no vertices specified." << llendl;
         }
 
-        if ((mMode != LLVertexBuffer::QUADS && 
-                mMode != LLVertexBuffer::LINES &&
-                mMode != LLVertexBuffer::TRIANGLES &&
-                mMode != LLVertexBuffer::POINTS) ||
+        if ((mMode != LLRender::QUADS && 
+                mMode != LLRender::LINES &&
+                mMode != LLRender::TRIANGLES &&
+                mMode != LLRender::POINTS) ||
                 mCount > 2048)
         {
                 flush();
@@ -638,7 +861,8 @@ void LLRender::flush()
 }
 void LLRender::vertex3f(const GLfloat& x, const GLfloat& y, const GLfloat& z)
 { 
-        if (mCount >= 4096)
+        //the range of mVerticesp, mColorsp and mTexcoordsp is [0, 4095]
+        if (mCount > 4094)
         {
         //      llwarns << "GL immediate mode overflow.  Some geometry not drawn." << llendl;
                 return;
@@ -720,3 +944,35 @@ 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;
+}
+