// #### updateRegistry
//
// Evaluates dirty flags and updates the effect registry if any
// attributes have changed that require the shader to be rebuilt
//
void
OpenSubdivShader::updateRegistry()
{
/* If adaptive flag has changed, update the effectRegistry accordingly */
if (_adaptiveDirty) {
g_effectRegistry.setIsAdaptive(_adaptive);
_adaptiveDirty = false;
}
MHWRender::MRenderer *theRenderer = MHWRender::MRenderer::theRenderer();
_theTextureManager = theRenderer->getTextureManager();
/* If diffuse texture has changed, update the effectRegistry accordingly */
if (_diffuseMapDirty) {
GLuint diffMapId = bindTexture( _diffuseMapFile, DIFF_TEXTURE_UNIT );
g_effectRegistry.setDiffuseId(diffMapId);
_diffuseMapDirty = false;
}
/* If shader source has changed, update the effectRegistry accordingly */
if (_shaderSourceDirty) {
if ( _shaderSource.empty() ) {
if ( g_effectRegistry.getShaderSource() != defaultShaderSource ) {
g_effectRegistry.setShaderSource(defaultShaderSource);
}
} else {
if ( g_effectRegistry.getShaderSource() != _shaderSource ) {
g_effectRegistry.setShaderSource(_shaderSource);
}
}
_shaderSourceDirty = false;
}
}
simpleNoiseShaderOverride::~simpleNoiseShaderOverride()
{
// Release texture
MHWRender::MRenderer* renderer = MHWRender::MRenderer::theRenderer();
if (renderer)
{
MHWRender::MTextureManager* textureMgr =
renderer->getTextureManager();
if (textureMgr)
{
textureMgr->releaseTexture(fNoiseTexture);
fNoiseTexture = NULL;
}
}
// Release sampler state
MHWRender::MStateManager::releaseSamplerState(fNoiseSamplerState);
fNoiseSamplerState = NULL;
}
//
// updateRegistry
//
// When attributes change which affect the shader compilation the
// effectRegistry needs to be updated with the new values
//
void
OpenSubdivPtexShader::updateRegistry()
{
// adaptive toggle
if (_adaptiveDirty) {
effectRegistry.setIsAdaptive(_adaptive);
_adaptiveDirty = false;
}
// ptex color file
if (_ptexColorDirty) {
bool ptexColorValid = bindPtexTexture(_colorFile, &_ptexColor, CLR_TEXTURE_UNIT);
effectRegistry.setPtexColorValid(ptexColorValid);
_ptexColorDirty = false;
}
// ptex displacement file
if (_ptexDisplacementDirty) {
bool ptexDisplacementValid = bindPtexTexture(_displacementFile, &_ptexDisplacement, DISP_TEXTURE_UNIT);
effectRegistry.setPtexDisplacementValid(ptexDisplacementValid);
_ptexDisplacementDirty = false;
}
// ptex occlusion file
if (_ptexOcclusionDirty) {
bool ptexOcclusionValid = bindPtexTexture(_occlusionFile, &_ptexOcclusion, OCC_TEXTURE_UNIT);
effectRegistry.setPtexOcclusionValid(ptexOcclusionValid);
_ptexOcclusionDirty = false;
}
MHWRender::MRenderer *theRenderer = MHWRender::MRenderer::theRenderer();
_theTextureManager = theRenderer->getTextureManager();
// diffuse environment map file
if (_diffEnvMapDirty) {
GLuint diffEnvMapId = bindTexture( _diffEnvMapFile, DIFF_TEXTURE_UNIT );
effectRegistry.setDiffuseEnvironmentId(diffEnvMapId);
_diffEnvMapDirty = false;
}
// specular environment map file
if (_specEnvMapDirty) {
GLuint specEnvMapId = bindTexture( _specEnvMapFile, ENV_TEXTURE_UNIT );
effectRegistry.setSpecularEnvironmentId(specEnvMapId);
_specEnvMapDirty = false;
}
// shader source
if (_shaderSourceDirty) {
if ( _shaderSource.empty() ) {
if ( effectRegistry.getShaderSource() != defaultShaderSource ) {
effectRegistry.setShaderSource(defaultShaderSource);
}
} else {
if ( effectRegistry.getShaderSource() != _shaderSource ) {
effectRegistry.setShaderSource(_shaderSource);
}
}
_shaderSourceDirty = false;
}
}
/*
Utility method to update shader parameters based on available
lighting information.
*/
static void updateLightShader( MHWRender::MShaderInstance *shaderInstance,
const MHWRender::MDrawContext & context,
const MSelectionList * lightList )
{
if (!shaderInstance)
return;
// Check pass context information to see if we are in a shadow
// map update pass. If so do nothing.
//
const MHWRender::MPassContext & passCtx = context.getPassContext();
const MStringArray & passSem = passCtx.passSemantics();
bool handlePass = true;
for (unsigned int i=0; i<passSem.length() && handlePass; i++)
{
// Handle special pass drawing.
//
if (passSem[i] == MHWRender::MPassContext::kShadowPassSemantic)
{
handlePass = false;
}
}
if (!handlePass) return;
//
// Perform light shader update with lighting information
// If the light list is not empty then use that light's information.
// Otherwise choose the first appropriate light which can cast shadows.
//
// Defaults in case there are no lights
//
bool globalShadowsOn = false;
bool localShadowsOn = false;
bool shadowDirty = false;
MFloatVector direction(0.0f, 0.0f, 1.0f);
float lightIntensity = 0.0f; // If no lights then black out the light
float lightColor[3] = { 0.0f, 0.0f, 0.0f };
MStatus status;
// Scan to find the first N lights that has a direction component in it
// It's possible we find no lights.
//
MHWRender::MDrawContext::LightFilter considerAllSceneLights = MHWRender::MDrawContext::kFilteredIgnoreLightLimit;
unsigned int lightCount = context.numberOfActiveLights(considerAllSceneLights);
if (lightCount)
{
MFloatArray floatVals;
MIntArray intVals;
MHWRender::MTextureAssignment shadowResource;
shadowResource.texture = NULL;
MHWRender::MSamplerStateDesc samplerDesc;
MMatrix shadowViewProj;
float shadowColor[3] = { 0.0f, 0.0f, 0.0f };
unsigned int i=0;
bool foundDirectional = false;
for (i=0; i<lightCount && !foundDirectional ; i++)
{
MHWRender::MLightParameterInformation *lightParam = context.getLightParameterInformation( i, considerAllSceneLights );
if (lightParam)
{
// Prune against light list if any.
if (lightList && lightList->length())
{
if (!lightList->hasItem(lightParam->lightPath()))
continue;
}
MStringArray params;
lightParam->parameterList(params);
for (unsigned int p=0; p<params.length(); p++)
{
MString pname = params[p];
MHWRender::MLightParameterInformation::StockParameterSemantic semantic = lightParam->parameterSemantic( pname );
switch (semantic)
{
// Pick a few light parameters to pick up as an example
case MHWRender::MLightParameterInformation::kWorldDirection:
lightParam->getParameter( pname, floatVals );
direction = MFloatVector( floatVals[0], floatVals[1], floatVals[2] );
foundDirectional = true;
break;
case MHWRender::MLightParameterInformation::kIntensity:
lightParam->getParameter( pname, floatVals );
lightIntensity = floatVals[0];
break;
case MHWRender::MLightParameterInformation::kColor:
lightParam->getParameter( pname, floatVals );
lightColor[0] = floatVals[0];
lightColor[1] = floatVals[1];
lightColor[2] = floatVals[2];
break;
// Pick up shadowing parameters
case MHWRender::MLightParameterInformation::kGlobalShadowOn:
lightParam->getParameter( pname, intVals );
if (intVals.length())
globalShadowsOn = (intVals[0] != 0) ? true : false;
break;
case MHWRender::MLightParameterInformation::kShadowOn:
lightParam->getParameter( pname, intVals );
if (intVals.length())
localShadowsOn = (intVals[0] != 0) ? true : false;
break;
case MHWRender::MLightParameterInformation::kShadowViewProj:
lightParam->getParameter( pname, shadowViewProj);
break;
case MHWRender::MLightParameterInformation::kShadowMap:
lightParam->getParameter( pname, shadowResource );
break;
case MHWRender::MLightParameterInformation::kShadowDirty:
if (intVals.length())
shadowDirty = (intVals[0] != 0) ? true : false;
break;
case MHWRender::MLightParameterInformation::kShadowSamp:
lightParam->getParameter( pname, samplerDesc );
break;
case MHWRender::MLightParameterInformation::kShadowColor:
lightParam->getParameter( pname, floatVals );
shadowColor[0] = floatVals[0];
shadowColor[1] = floatVals[1];
shadowColor[2] = floatVals[2];
break;
default:
break;
}
} /* for params */
}
if (foundDirectional && globalShadowsOn && localShadowsOn && shadowResource.texture)
{
void *resourceHandle = shadowResource.texture->resourceHandle();
if (resourceHandle)
{
static bool debugShadowBindings = false;
status = shaderInstance->setParameter("mayaShadowPCF1_shadowMap", shadowResource );
if (status == MStatus::kSuccess && debugShadowBindings)
fprintf(stderr, "Bound shadow map to shader param mayaShadowPCF1_shadowMap\n");
status = shaderInstance->setParameter("mayaShadowPCF1_shadowViewProj", shadowViewProj );
if (status == MStatus::kSuccess && debugShadowBindings)
fprintf(stderr, "Bound shadow map transform to shader param mayaShadowPCF1_shadowViewProj\n");
status = shaderInstance->setParameter("mayaShadowPCF1_shadowColor", &shadowColor[0] );
if (status == MStatus::kSuccess && debugShadowBindings)
fprintf(stderr, "Bound shadow map color to shader param mayaShadowPCF1_shadowColor\n");
}
MHWRender::MRenderer* renderer = MHWRender::MRenderer::theRenderer();
if (renderer)
{
MHWRender::MTextureManager* textureManager = renderer->getTextureManager();
if (textureManager)
{
textureManager->releaseTexture(shadowResource.texture);
}
}
shadowResource.texture = NULL;
}
}
}
// Set up parameters which should be set regardless of light existence.
status = shaderInstance->setParameter("mayaDirectionalLight_direction", &( direction[0] ));
status = shaderInstance->setParameter("mayaDirectionalLight_intensity", lightIntensity );
status = shaderInstance->setParameter("mayaDirectionalLight_color", &( lightColor[0] ));
status = shaderInstance->setParameter("mayaShadowPCF1_mayaGlobalShadowOn", globalShadowsOn);
status = shaderInstance->setParameter("mayaShadowPCF1_mayaShadowOn", localShadowsOn);
}
void simpleNoiseShaderOverride::updateShader(
MHWRender::MShaderInstance& shader,
const MHWRender::MAttributeParameterMappingList& mappings)
{
// Handle resolved name caching
if (fResolvedNoiseMapName.length() == 0)
{
const MHWRender::MAttributeParameterMapping* mapping =
mappings.findByParameterName("noiseLookupMap");
if (mapping)
{
fResolvedNoiseMapName = mapping->resolvedParameterName();
}
}
if (fResolvedNoiseSamplerName.length() == 0)
{
const MHWRender::MAttributeParameterMapping* mapping =
mappings.findByParameterName("noiseLookupMapSampler");
if (mapping)
{
fResolvedNoiseSamplerName = mapping->resolvedParameterName();
}
}
// Set the parameters on the shader
if (fResolvedNoiseMapName.length() > 0 &&
fResolvedNoiseSamplerName.length() > 0)
{
// Set a point-clamp sampler to the shader
if (!fNoiseSamplerState)
{
MHWRender::MSamplerStateDesc desc;
desc.filter = MHWRender::MSamplerState::kMinMagMipPoint;
desc.addressU = desc.addressV = desc.addressW =
MHWRender::MSamplerState::kTexClamp;
desc.minLOD = 0;
desc.maxLOD = 0;
fNoiseSamplerState =
MHWRender::MStateManager::acquireSamplerState(desc);
}
if (fNoiseSamplerState)
{
shader.setParameter(fResolvedNoiseSamplerName, *fNoiseSamplerState);
}
// Generate the noise lookup table texture if necessary
if (!fNoiseTexture)
{
MHWRender::MRenderer* renderer =
MHWRender::MRenderer::theRenderer();
MHWRender::MTextureManager* textureMgr =
renderer ? renderer->getTextureManager() : NULL;
if (textureMgr)
{
// First, search the texture cache to see if another instance of
// this override has already generated the texture. We can reuse
// it to save GPU memory since the noise data is constant.
fNoiseTexture =
textureMgr->findTexture(sNoiseLookupTextureName);
// Not in cache, so we need to actually build the texture
if (!fNoiseTexture)
{
// Get Maya's noise table
const std::vector<float>& noiseData = GetMayaNoiseTable();
// Create a 3D texture containing the data
MHWRender::MTextureDescription desc;
desc.setToDefault2DTexture();
desc.fWidth = desc.fHeight = desc.fDepth =
MRenderUtil::noiseTableCubeSide();
desc.fFormat = MHWRender::kR32_FLOAT;
desc.fTextureType = MHWRender::kVolumeTexture;
desc.fMipmaps = 1;
fNoiseTexture = textureMgr->acquireTexture(
sNoiseLookupTextureName,
desc,
(const void*)&(noiseData[0]),
false);
}
}
}
// Set the texture to the shader instance
if (fNoiseTexture)
{
MHWRender::MTextureAssignment textureAssignment;
textureAssignment.texture = fNoiseTexture;
shader.setParameter(fResolvedNoiseMapName, textureAssignment);
}
}
}