bool LightingVariablesHelper::MergeAsArrayItem (csShaderVariableStack& dst,
csShaderVariable* sv,
size_t index)
{
CS::ShaderVarStringID name = sv->GetName();
if (name >= dst.GetSize()) return false;
csShaderVariable*& dstVar = dst[name];
if (dstVar == 0) dstVar = CreateTempSV (name);
if ((dstVar->GetType() != csShaderVariable::UNKNOWN)
&& (dstVar->GetType() != csShaderVariable::ARRAY)) return true;
dstVar->SetArrayElement (index, sv);
return true;
}
void csVProcStandardProgram::SetupState (const csRenderMesh* mesh,
csRenderMeshModes& modes,
const csShaderVariableStack& stack)
{
bool skin_updated = false;// @@@ FIXME - time related detection if vertices are not already updated
if (doVertexSkinning || doNormalSkinning ||
doTangentSkinning || doBiTangentSkinning)
{
skin_updated = UpdateSkinnedVertices (modes, stack);
}
if (numLights > 0)
{
int lightsActive = 0;
CS::ShaderVarStringID id;
id = shaderPlugin->lsvCache.GetDefaultSVId (
csLightShaderVarCache::varLightCount);
csShaderVariable* sv;
if ((stack.GetSize () > id) && ((sv = stack[id]) != 0))
sv->GetValue (lightsActive);
iRenderBuffer *vbuf = doVertexSkinning && skin_updated ?
modes.buffers->GetRenderBuffer (skinnedPositionOutputBuffer) :
GetBuffer (positionBuffer, modes, stack);
iRenderBuffer *nbuf = doNormalSkinning && skin_updated ?
modes.buffers->GetRenderBuffer (skinnedNormalOutputBuffer) :
GetBuffer (normalBuffer, modes, stack);
iRenderBuffer *cbuf = GetBuffer (colorBuffer, modes, stack);
if (vbuf == 0 || nbuf == 0) return;
csReversibleTransform camtrans;
if ((stack.GetSize () > shaderPlugin->string_world2camera)
&& ((sv = stack[shaderPlugin->string_world2camera]) != 0))
sv->GetValue (camtrans);
csVector3 eyePos (camtrans.GetT2OTranslation ());
csVector3 eyePosObject (mesh->object2world.Other2This (eyePos));
bool hasAlpha = cbuf && cbuf->GetComponentCount() >= 4;
//copy output
size_t elementCount = vbuf->GetElementCount ();
csRef<iRenderBuffer> clbuf;
if (doDiffuse)
{
clbuf = csRenderBuffer::CreateRenderBuffer (elementCount, CS_BUF_STREAM,
CS_BUFCOMP_FLOAT, hasAlpha ? 4 : 3);
// @@@ FIXME: should probably get rid of the multiple locking/unlocking...
csRenderBufferLock<float> tmpColor (clbuf);
memset (tmpColor, 0, sizeof(float) * (hasAlpha?4:3) * elementCount);
}
csRef<iRenderBuffer> specBuf;
if (doSpecular)
{
specBuf = csRenderBuffer::CreateRenderBuffer (elementCount,
CS_BUF_STREAM, CS_BUFCOMP_FLOAT, 3);
csRenderBufferLock<float> tmpColor (specBuf);
memset (tmpColor, 0, sizeof(csColor) * elementCount);
}
float shininess = GetParamFloatVal (stack, shininessParam, 0.0f);
if (lightsActive > 0)
{
if (lightMixMode == LIGHTMIXMODE_NONE)
{
//only calculate last, other have no effect
const size_t lightNum = csMin((size_t)lightsActive, numLights)-1;
if ((disableMask.GetSize() <= lightNum)
|| !disableMask.IsBitSet (lightNum))
{
csLightProperties light (lightNum, shaderPlugin->lsvCache, stack,
mesh->object2world);
iVertexLightCalculator *calc =
shaderPlugin->GetLightCalculator (light, useAttenuation);
calc->CalculateLighting (light, eyePosObject, shininess, elementCount,
vbuf, nbuf, clbuf, specBuf);
}
}
else
{
LightMixmode useMixMode = LIGHTMIXMODE_ADD;
for (size_t i = 0; i < (csMin((size_t)lightsActive, numLights)); i++)
{
if ((disableMask.GetSize() > i) && disableMask.IsBitSet (i))
{
useMixMode = lightMixMode;
continue;
}
csLightProperties light (i, shaderPlugin->lsvCache, stack,
mesh->object2world);
iVertexLightCalculator *calc =
shaderPlugin->GetLightCalculator (light, useAttenuation);
switch (useMixMode)
{
case LIGHTMIXMODE_ADD:
{
calc->CalculateLightingAdd (light, eyePosObject, shininess, elementCount,
vbuf, nbuf, clbuf, specBuf);
break;
}
case LIGHTMIXMODE_MUL:
{
calc->CalculateLightingMul (light, eyePosObject, shininess, elementCount,
vbuf, nbuf, clbuf, specBuf);
break;
}
case LIGHTMIXMODE_NONE:
break;
}
useMixMode = lightMixMode;
}
}
}
if (doDiffuse && cbuf)
{
switch (colorMixMode)
{
case LIGHTMIXMODE_NONE:
if (!hasAlpha) break;
{
csVertexListWalker<float> cbufWalker (cbuf, 4);
csRenderBufferLock<csVector4, iRenderBuffer*> tmpColor (clbuf);
for (size_t i = 0; i < elementCount; i++)
{
const float* c = cbufWalker;
tmpColor[i].w = c[3];
++cbufWalker;
}
}
break;
case LIGHTMIXMODE_ADD:
{
csVertexListWalker<float> cbufWalker (cbuf, 4);
csRenderBufferLock<csVector4, iRenderBuffer*> tmpColor (clbuf);
for (size_t i = 0; i < elementCount; i++)
{
csVector4& t = tmpColor[i];
const float* c = cbufWalker;
for (int j = 0; j < 3; j++)
t[j] += c[j];
if (hasAlpha) t[3] = c[3];
++cbufWalker;
}
}
break;
case LIGHTMIXMODE_MUL:
{
csVertexListWalker<float> cbufWalker (cbuf, 4);
csRenderBufferLock<csVector4, iRenderBuffer*> tmpColor (clbuf);
for (size_t i = 0; i < elementCount; i++)
{
csVector4& t = tmpColor[i];
const float* c = cbufWalker;
for (int j = 0; j < 3; j++)
t[j] *= c[j];
if (hasAlpha) t[3] = c[3];
++cbufWalker;
}
}
break;
default:
CS_ASSERT (false);
}
if (doSpecular && specularOnDiffuse)
{
csRenderBufferLock<csColor> tmpColor (clbuf);
csRenderBufferLock<csColor> tmpColor2 (specBuf);
for (size_t i = 0; i < elementCount; i++)
{
tmpColor[i] += tmpColor2[i];
}
}
}
float finalLightFactorReal = GetParamFloatVal (stack, finalLightFactor,
1.0f);
if (doDiffuse)
{
{
csRenderBufferLock<csColor> tmpColor (clbuf);
for (size_t i = 0; i < elementCount; i++)
{
tmpColor[i] *= finalLightFactorReal;
}
}
modes.buffers->SetAccessor (modes.buffers->GetAccessor(),
modes.buffers->GetAccessorMask() & ~CS_BUFFER_COLOR_MASK);
modes.buffers->SetRenderBuffer (CS_BUFFER_COLOR, clbuf);
}
if (doSpecular && !specularOnDiffuse)
{
csRenderBufferLock<csColor> tmpColor (specBuf);
for (size_t i = 0; i < elementCount; i++)
{
tmpColor[i] *= finalLightFactorReal;
}
modes.buffers->SetAccessor (modes.buffers->GetAccessor(),
modes.buffers->GetAccessorMask() & ~(1 << specularOutputBuffer));
modes.buffers->SetRenderBuffer (specularOutputBuffer, specBuf);
}
}
}