livie
/
phoenix-firestorm
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
phoenix-firestorm/indra/newview/llvosurfacepatch.cpp

1003 lines
25 KiB
C++
Raw Blame History

/**
* @file llvosurfacepatch.cpp
* @brief Viewer-object derived "surface patch", which is a piece of terrain
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "llviewerprecompiledheaders.h"
#include "llvosurfacepatch.h"
#include "lldrawpoolterrain.h"
#include "lldrawable.h"
#include "llface.h"
#include "llprimitive.h"
#include "llsky.h"
#include "llsurfacepatch.h"
#include "llsurface.h"
#include "llviewerobjectlist.h"
#include "llviewerregion.h"
#include "llvlcomposition.h"
#include "llvovolume.h"
#include "pipeline.h"
//============================================================================
class LLVertexBufferTerrain : public LLVertexBuffer
{
public:
LLVertexBufferTerrain() :
LLVertexBuffer(MAP_VERTEX | MAP_NORMAL | MAP_TEXCOORD | MAP_TEXCOORD2 | MAP_COLOR, GL_DYNAMIC_DRAW_ARB)
{
};
// virtual
void setupVertexBuffer(U32 data_mask) const
{
if (LLDrawPoolTerrain::getDetailMode() == 0)
{
LLVertexBuffer::setupVertexBuffer(data_mask);
}
else if (data_mask & LLVertexBuffer::MAP_TEXCOORD2)
{
U8* base = useVBOs() ? NULL : mMappedData;
glVertexPointer(3,GL_FLOAT, mStride, (void*)(base + 0));
glNormalPointer(GL_FLOAT, mStride, (void*)(base + mOffsets[TYPE_NORMAL]));
glColorPointer(4, GL_UNSIGNED_BYTE, mStride, (void*)(base + mOffsets[TYPE_COLOR]));
glClientActiveTextureARB(GL_TEXTURE3_ARB);
glTexCoordPointer(2,GL_FLOAT, mStride, (void*)(base + mOffsets[TYPE_TEXCOORD2]));
glClientActiveTextureARB(GL_TEXTURE2_ARB);
glTexCoordPointer(2,GL_FLOAT, mStride, (void*)(base + mOffsets[TYPE_TEXCOORD2]));
glClientActiveTextureARB(GL_TEXTURE1_ARB);
glTexCoordPointer(2,GL_FLOAT, mStride, (void*)(base + mOffsets[TYPE_TEXCOORD2]));
glClientActiveTextureARB(GL_TEXTURE0_ARB);
glTexCoordPointer(2,GL_FLOAT, mStride, (void*)(base + mOffsets[TYPE_TEXCOORD2]));
}
else
{
LLVertexBuffer::setupVertexBuffer(data_mask);
}
llglassertok();
}
};
//============================================================================
LLVOSurfacePatch::LLVOSurfacePatch(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
: LLStaticViewerObject(id, LL_VO_SURFACE_PATCH, regionp),
mDirtiedPatch(FALSE),
mPool(NULL),
mBaseComp(0),
mPatchp(NULL),
mDirtyTexture(FALSE),
mDirtyTerrain(FALSE),
mLastNorthStride(0),
mLastEastStride(0),
mLastStride(0),
mLastLength(0)
{
// Terrain must draw during selection passes so it can block objects behind it.
mbCanSelect = TRUE;
setScale(LLVector3(16.f, 16.f, 16.f)); // Hack for setting scale for bounding boxes/visibility.
}
LLVOSurfacePatch::~LLVOSurfacePatch()
{
mPatchp = NULL;
}
void LLVOSurfacePatch::markDead()
{
if (mPatchp)
{
mPatchp->clearVObj();
mPatchp = NULL;
}
LLViewerObject::markDead();
}
BOOL LLVOSurfacePatch::isActive() const
{
return FALSE;
}
void LLVOSurfacePatch::setPixelAreaAndAngle(LLAgent &agent)
{
mAppAngle = 50;
mPixelArea = 500*500;
}
void LLVOSurfacePatch::updateTextures(LLAgent &agent)
{
}
LLFacePool *LLVOSurfacePatch::getPool()
{
mPool = (LLDrawPoolTerrain*) gPipeline.getPool(LLDrawPool::POOL_TERRAIN, mPatchp->getSurface()->getSTexture());
return mPool;
}
LLDrawable *LLVOSurfacePatch::createDrawable(LLPipeline *pipeline)
{
pipeline->allocDrawable(this);
mDrawable->setRenderType(LLPipeline::RENDER_TYPE_TERRAIN);
mBaseComp = llfloor(mPatchp->getMinComposition());
S32 min_comp, max_comp, range;
min_comp = llfloor(mPatchp->getMinComposition());
max_comp = llceil(mPatchp->getMaxComposition());
range = (max_comp - min_comp);
range++;
if (range > 3)
{
if ((mPatchp->getMinComposition() - min_comp) > (max_comp - mPatchp->getMaxComposition()))
{
// The top side runs over more
mBaseComp++;
}
range = 3;
}
LLFacePool *poolp = getPool();
mDrawable->addFace(poolp, NULL);
return mDrawable;
}
BOOL LLVOSurfacePatch::updateGeometry(LLDrawable *drawable)
{
LLFastTimer ftm(LLFastTimer::FTM_UPDATE_TERRAIN);
S32 min_comp, max_comp, range;
min_comp = lltrunc(mPatchp->getMinComposition());
max_comp = lltrunc(ceil(mPatchp->getMaxComposition()));
range = (max_comp - min_comp);
range++;
S32 new_base_comp = lltrunc(mPatchp->getMinComposition());
if (range > 3)
{
if ((mPatchp->getMinComposition() - min_comp) > (max_comp - mPatchp->getMaxComposition()))
{
// The top side runs over more
new_base_comp++;
}
range = 3;
}
// Pick the two closest detail textures for this patch...
// Then create the draw pool for it.
// Actually, should get the average composition instead of the center.
mBaseComp = new_base_comp;
//////////////////////////
//
// Figure out the strides
//
//
U32 patch_width, render_stride, north_stride, east_stride, length;
render_stride = mPatchp->getRenderStride();
patch_width = mPatchp->getSurface()->getGridsPerPatchEdge();
length = patch_width / render_stride;
if (mPatchp->getNeighborPatch(NORTH))
{
north_stride = mPatchp->getNeighborPatch(NORTH)->getRenderStride();
}
else
{
north_stride = render_stride;
}
if (mPatchp->getNeighborPatch(EAST))
{
east_stride = mPatchp->getNeighborPatch(EAST)->getRenderStride();
}
else
{
east_stride = render_stride;
}
mLastLength = length;
mLastStride = render_stride;
mLastNorthStride = north_stride;
mLastEastStride = east_stride;
return TRUE;
}
void LLVOSurfacePatch::updateFaceSize(S32 idx)
{
if (idx != 0)
{
llwarns << "Terrain partition requested invalid face!!!" << llendl;
return;
}
LLFace* facep = mDrawable->getFace(idx);
S32 num_vertices = 0;
S32 num_indices = 0;
if (mLastStride)
{
getGeomSizesMain(mLastStride, num_vertices, num_indices);
getGeomSizesNorth(mLastStride, mLastNorthStride, num_vertices, num_indices);
getGeomSizesEast(mLastStride, mLastEastStride, num_vertices, num_indices);
}
facep->setSize(num_vertices, num_indices);
}
BOOL LLVOSurfacePatch::updateLOD()
{
//mDrawable->updateLightSet();
mDrawable->setState(LLDrawable::LIGHTING_BUILT);
return TRUE;
}
void LLVOSurfacePatch::getGeometry(LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLColor4U> &colorsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U32> &indicesp)
{
LLFace* facep = mDrawable->getFace(0);
U32 index_offset = facep->getGeomIndex();
updateMainGeometry(facep,
verticesp,
normalsp,
colorsp,
texCoords0p,
texCoords1p,
indicesp,
index_offset);
updateNorthGeometry(facep,
verticesp,
normalsp,
colorsp,
texCoords0p,
texCoords1p,
indicesp,
index_offset);
updateEastGeometry(facep,
verticesp,
normalsp,
colorsp,
texCoords0p,
texCoords1p,
indicesp,
index_offset);
}
void LLVOSurfacePatch::updateMainGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLColor4U> &colorsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U32> &indicesp,
U32 &index_offset)
{
S32 i, j, x, y;
U32 patch_size, render_stride;
S32 num_vertices, num_indices;
U32 index;
render_stride = mLastStride;
patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
S32 vert_size = patch_size / render_stride;
///////////////////////////
//
// Render the main patch
//
//
num_vertices = 0;
num_indices = 0;
// First, figure out how many vertices we need...
getGeomSizesMain(render_stride, num_vertices, num_indices);
if (num_vertices > 0)
{
facep->mCenterAgent = mPatchp->getPointAgent(8, 8);
// Generate patch points first
for (j = 0; j < vert_size; j++)
{
for (i = 0; i < vert_size; i++)
{
x = i * render_stride;
y = j * render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
}
for (j = 0; j < (vert_size - 1); j++)
{
if (j % 2)
{
for (i = (vert_size - 1); i > 0; i--)
{
index = (i - 1)+ j*vert_size;
*(indicesp++) = index_offset + index;
index = i + (j+1)*vert_size;
*(indicesp++) = index_offset + index;
index = (i - 1) + (j+1)*vert_size;
*(indicesp++) = index_offset + index;
index = (i - 1) + j*vert_size;
*(indicesp++) = index_offset + index;
index = i + j*vert_size;
*(indicesp++) = index_offset + index;
index = i + (j+1)*vert_size;
*(indicesp++) = index_offset + index;
}
}
else
{
for (i = 0; i < (vert_size - 1); i++)
{
index = i + j*vert_size;
*(indicesp++) = index_offset + index;
index = (i + 1) + (j+1)*vert_size;
*(indicesp++) = index_offset + index;
index = i + (j+1)*vert_size;
*(indicesp++) = index_offset + index;
index = i + j*vert_size;
*(indicesp++) = index_offset + index;
index = (i + 1) + j*vert_size;
*(indicesp++) = index_offset + index;
index = (i + 1) + (j + 1)*vert_size;
*(indicesp++) = index_offset + index;
}
}
}
}
index_offset += num_vertices;
}
void LLVOSurfacePatch::updateNorthGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLColor4U> &colorsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U32> &indicesp,
U32 &index_offset)
{
S32 vertex_count = 0;
S32 i, x, y;
S32 num_vertices, num_indices;
U32 render_stride = mLastStride;
S32 patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
S32 length = patch_size / render_stride;
S32 half_length = length / 2;
U32 north_stride = mLastNorthStride;
///////////////////////////
//
// Render the north strip
//
//
// Stride lengths are the same
if (north_stride == render_stride)
{
num_vertices = 2 * length + 1;
num_indices = length * 6 - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(8, 15) + mPatchp->getPointAgent(8, 16))*0.5f;
// Main patch
for (i = 0; i < length; i++)
{
x = i * render_stride;
y = 16 - render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
// North patch
for (i = 0; i <= length; i++)
{
x = i * render_stride;
y = 16;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
for (i = 0; i < length; i++)
{
// Generate indices
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + length + i + 1;
*(indicesp++) = index_offset + length + i;
if (i != length - 1)
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + length + i + 1;
}
}
}
else if (north_stride > render_stride)
{
// North stride is longer (has less vertices)
num_vertices = length + length/2 + 1;
num_indices = half_length*9 - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(7, 15) + mPatchp->getPointAgent(8, 16))*0.5f;
// Iterate through this patch's points
for (i = 0; i < length; i++)
{
x = i * render_stride;
y = 16 - render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
// Iterate through the north patch's points
for (i = 0; i <= length; i+=2)
{
x = i * render_stride;
y = 16;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
for (i = 0; i < length; i++)
{
if (!(i % 2))
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + length + (i/2);
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + length + (i/2) + 1;
*(indicesp++) = index_offset + length + (i/2);
}
else if (i < (length - 1))
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + length + (i/2) + 1;
}
}
}
else
{
// North stride is shorter (more vertices)
length = patch_size / north_stride;
half_length = length / 2;
num_vertices = length + half_length + 1;
num_indices = 9*half_length - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(15, 7) + mPatchp->getPointAgent(16, 8))*0.5f;
// Iterate through this patch's points
for (i = 0; i < length; i+=2)
{
x = i * north_stride;
y = 16 - render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
// Iterate through the north patch's points
for (i = 0; i <= length; i++)
{
x = i * north_stride;
y = 16;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
vertex_count++;
}
for (i = 0; i < length; i++)
{
if (!(i%2))
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + i/2;
*(indicesp++) = index_offset + half_length + i + 1;
}
else if (i < (length - 2))
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + i/2;
*(indicesp++) = index_offset + i/2 + 1;
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + i/2 + 1;
*(indicesp++) = index_offset + half_length + i + 1;
}
else
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + i/2;
*(indicesp++) = index_offset + half_length + i + 1;
}
}
}
index_offset += num_vertices;
}
void LLVOSurfacePatch::updateEastGeometry(LLFace *facep,
LLStrider<LLVector3> &verticesp,
LLStrider<LLVector3> &normalsp,
LLStrider<LLColor4U> &colorsp,
LLStrider<LLVector2> &texCoords0p,
LLStrider<LLVector2> &texCoords1p,
LLStrider<U32> &indicesp,
U32 &index_offset)
{
S32 i, x, y;
S32 num_vertices, num_indices;
U32 render_stride = mLastStride;
S32 patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
S32 length = patch_size / render_stride;
S32 half_length = length / 2;
U32 east_stride = mLastEastStride;
// Stride lengths are the same
if (east_stride == render_stride)
{
num_vertices = 2 * length + 1;
num_indices = length * 6 - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(8, 15) + mPatchp->getPointAgent(8, 16))*0.5f;
// Main patch
for (i = 0; i < length; i++)
{
x = 16 - render_stride;
y = i * render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
// East patch
for (i = 0; i <= length; i++)
{
x = 16;
y = i * render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
for (i = 0; i < length; i++)
{
// Generate indices
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + length + i;
*(indicesp++) = index_offset + length + i + 1;
if (i != length - 1)
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + length + i + 1;
*(indicesp++) = index_offset + i + 1;
}
}
}
else if (east_stride > render_stride)
{
// East stride is longer (has less vertices)
num_vertices = length + half_length + 1;
num_indices = half_length*9 - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(7, 15) + mPatchp->getPointAgent(8, 16))*0.5f;
// Iterate through this patch's points
for (i = 0; i < length; i++)
{
x = 16 - render_stride;
y = i * render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
// Iterate through the east patch's points
for (i = 0; i <= length; i+=2)
{
x = 16;
y = i * render_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
for (i = 0; i < length; i++)
{
if (!(i % 2))
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + length + (i/2);
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + i + 1;
*(indicesp++) = index_offset + length + (i/2);
*(indicesp++) = index_offset + length + (i/2) + 1;
}
else if (i < (length - 1))
{
*(indicesp++) = index_offset + i;
*(indicesp++) = index_offset + length + (i/2) + 1;
*(indicesp++) = index_offset + i + 1;
}
}
}
else
{
// East stride is shorter (more vertices)
length = patch_size / east_stride;
half_length = length / 2;
num_vertices = length + length/2 + 1;
num_indices = 9*(length/2) - 3;
facep->mCenterAgent = (mPatchp->getPointAgent(15, 7) + mPatchp->getPointAgent(16, 8))*0.5f;
// Iterate through this patch's points
for (i = 0; i < length; i+=2)
{
x = 16 - render_stride;
y = i * east_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
// Iterate through the east patch's points
for (i = 0; i <= length; i++)
{
x = 16;
y = i * east_stride;
mPatchp->eval(x, y, render_stride, verticesp.get(), normalsp.get(), texCoords0p.get(), texCoords1p.get());
calcColor(verticesp.get(), normalsp.get(), colorsp.get());
verticesp++;
normalsp++;
colorsp++;
texCoords0p++;
texCoords1p++;
}
for (i = 0; i < length; i++)
{
if (!(i%2))
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + half_length + i + 1;
*(indicesp++) = index_offset + i/2;
}
else if (i < (length - 2))
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + i/2 + 1;
*(indicesp++) = index_offset + i/2;
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + half_length + i + 1;
*(indicesp++) = index_offset + i/2 + 1;
}
else
{
*(indicesp++) = index_offset + half_length + i;
*(indicesp++) = index_offset + half_length + i + 1;
*(indicesp++) = index_offset + i/2;
}
}
}
index_offset += num_vertices;
}
void LLVOSurfacePatch::calcColor(const LLVector3* vertex, const LLVector3* normal, LLColor4U* colorp)
{
LLColor4 color(0,0,0,0);
if (gPipeline.getLightingDetail() >= 2)
{
for (LLDrawable::drawable_set_t::iterator iter = mDrawable->mLightSet.begin();
iter != mDrawable->mLightSet.end(); ++iter)
{
LLDrawable* light_drawable = *iter;
LLVOVolume* light = light_drawable->getVOVolume();
if (!light)
{
continue;
}
LLColor4 light_color;
light->calcLightAtPoint(*vertex, *normal, light_color);
color += light_color;
}
color.mV[3] = 1.0f;
}
colorp->setVecScaleClamp(color);
}
BOOL LLVOSurfacePatch::updateShadows(BOOL use_shadow_factor)
{
return FALSE; //terrain updates its shadows during standard relight
}
void LLVOSurfacePatch::setPatch(LLSurfacePatch *patchp)
{
mPatchp = patchp;
dirtyPatch();
};
void LLVOSurfacePatch::dirtyPatch()
{
mDirtiedPatch = TRUE;
dirtyGeom();
mDirtyTerrain = TRUE;
LLVector3 center = mPatchp->getCenterRegion();
LLSurface *surfacep = mPatchp->getSurface();
setPositionRegion(center);
F32 scale_factor = surfacep->getGridsPerPatchEdge() * surfacep->getMetersPerGrid();
setScale(LLVector3(scale_factor, scale_factor, mPatchp->getMaxZ() - mPatchp->getMinZ()));
}
void LLVOSurfacePatch::dirtyGeom()
{
if (mDrawable)
{
gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL, TRUE);
mDrawable->getFace(0)->mVertexBuffer = NULL;
mDrawable->movePartition();
}
}
void LLVOSurfacePatch::getGeomSizesMain(const S32 stride, S32 &num_vertices, S32 &num_indices)
{
S32 patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
// First, figure out how many vertices we need...
S32 vert_size = patch_size / stride;
if (vert_size >= 2)
{
num_vertices += vert_size * vert_size;
num_indices += 6 * (vert_size - 1)*(vert_size - 1);
}
}
void LLVOSurfacePatch::getGeomSizesNorth(const S32 stride, const S32 north_stride,
S32 &num_vertices, S32 &num_indices)
{
S32 patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
S32 length = patch_size / stride;
// Stride lengths are the same
if (north_stride == stride)
{
num_vertices += 2 * length + 1;
num_indices += length * 6 - 3;
}
else if (north_stride > stride)
{
// North stride is longer (has less vertices)
num_vertices += length + (length/2) + 1;
num_indices += (length/2)*9 - 3;
}
else
{
// North stride is shorter (more vertices)
length = patch_size / north_stride;
num_vertices += length + (length/2) + 1;
num_indices += 9*(length/2) - 3;
}
}
void LLVOSurfacePatch::getGeomSizesEast(const S32 stride, const S32 east_stride,
S32 &num_vertices, S32 &num_indices)
{
S32 patch_size = mPatchp->getSurface()->getGridsPerPatchEdge();
S32 length = patch_size / stride;
// Stride lengths are the same
if (east_stride == stride)
{
num_vertices += 2 * length + 1;
num_indices += length * 6 - 3;
}
else if (east_stride > stride)
{
// East stride is longer (has less vertices)
num_vertices += length + (length/2) + 1;
num_indices += (length/2)*9 - 3;
}
else
{
// East stride is shorter (more vertices)
length = patch_size / east_stride;
num_vertices += length + (length/2) + 1;
num_indices += 9*(length/2) - 3;
}
}
void LLVOSurfacePatch::updateSpatialExtents(LLVector3& newMin, LLVector3 &newMax)
{
LLVector3 posAgent = getPositionAgent();
LLVector3 scale = getScale();
newMin = posAgent-scale*0.5f;
newMax = posAgent+scale*0.5f;
mDrawable->setPositionGroup((newMin+newMax)*0.5f);
}
U32 LLVOSurfacePatch::getPartitionType() const
{
return LLPipeline::PARTITION_TERRAIN;
}
LLTerrainPartition::LLTerrainPartition()
: LLSpatialPartition(LLDrawPoolTerrain::VERTEX_DATA_MASK)
{
mRenderByGroup = FALSE;
mBufferUsage = GL_DYNAMIC_DRAW_ARB;
mDrawableType = LLPipeline::RENDER_TYPE_TERRAIN;
mPartitionType = LLPipeline::PARTITION_TERRAIN;
}
LLVertexBuffer* LLTerrainPartition::createVertexBuffer(U32 type_mask, U32 usage)
{
return new LLVertexBufferTerrain();
}
void LLTerrainPartition::getGeometry(LLSpatialGroup* group)
{
LLVertexBuffer* buffer = group->mVertexBuffer;
//get vertex buffer striders
LLStrider<LLVector3> vertices;
LLStrider<LLVector3> normals;
LLStrider<LLVector2> texcoords2;
LLStrider<LLVector2> texcoords;
LLStrider<LLColor4U> colors;
LLStrider<U32> indices;
buffer->getVertexStrider(vertices);
buffer->getNormalStrider(normals);
buffer->getTexCoordStrider(texcoords);
buffer->getTexCoord2Strider(texcoords2);
buffer->getColorStrider(colors);
buffer->getIndexStrider(indices);
U32 indices_index = 0;
U32 index_offset = 0;
for (std::vector<LLFace*>::iterator i = mFaceList.begin(); i != mFaceList.end(); ++i)
{
LLFace* facep = *i;
facep->setIndicesIndex(indices_index);
facep->setGeomIndex(index_offset);
facep->mVertexBuffer = buffer;
LLVOSurfacePatch* patchp = (LLVOSurfacePatch*) facep->getViewerObject();
patchp->getGeometry(vertices, normals, colors, texcoords, texcoords2, indices);
indices_index += facep->getIndicesCount();
index_offset += facep->getGeomCount();
}
mFaceList.clear();
}
Reference in New Issue View Git Blame Copy Permalink