GammaOverride::GammaOverride(const MObject& obj)
: MPxShadingNodeOverride(obj)
, fFragmentName("")
{
// Define fragments needed for VP2 version of shader, this could also be
// defined in a separate XML file
//
// Define the input and output parameter names to match the input and
// output attribute names so that the values are automatically populated
// on the shader.
static const MString sFragmentName("gammaShaderPluginFragment");
static const char* sFragmentBody =
"<fragment uiName=\"gammaShaderPluginFragment\" name=\"gammaShaderPluginFragment\" type=\"plumbing\" class=\"ShadeFragment\" version=\"1.0\">"
" <description><![CDATA[Gamma utility fragment]]></description>"
" <properties>"
" <float3 name=\"color\" />"
" <float3 name=\"gamma\" />"
" </properties>"
" <values>"
" <float3 name=\"color\" value=\"0.5,0.5,0.5\" />"
" <float3 name=\"gamma\" value=\"1.0,1.0,1.0\" />"
" </values>"
" <outputs>"
" <float3 name=\"outColor\" />"
" </outputs>"
" <implementation>"
" <implementation render=\"OGSRenderer\" language=\"Cg\" lang_version=\"2.1\">"
" <function_name val=\"gammaShaderPluginFragment\" />"
" <source><![CDATA["
"float3 gammaShaderPluginFragment(float3 icol, float3 igam) \n"
"{ \n"
" float3 result; \n"
" result.r = pow(icol.r, 1.0f/igam.r); \n"
" result.g = pow(icol.g, 1.0f/igam.g); \n"
" result.b = pow(icol.b, 1.0f/igam.b); \n"
" return result; \n"
"} \n]]>"
" </source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"HLSL\" lang_version=\"11.0\">"
" <function_name val=\"gammaShaderPluginFragment\" />"
" <source><![CDATA["
"float3 gammaShaderPluginFragment(float3 icol, float3 igam) \n"
"{ \n"
" float3 result; \n"
" result.r = pow(icol.r, 1.0f/igam.r); \n"
" result.g = pow(icol.g, 1.0f/igam.g); \n"
" result.b = pow(icol.b, 1.0f/igam.b); \n"
" return result; \n"
"} \n]]>"
" </source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"GLSL\" lang_version=\"3.0\">"
" <function_name val=\"gammaShaderPluginFragment\" />"
" <source><![CDATA["
"vec3 gammaShaderPluginFragment(vec3 icol, vec3 igam) \n"
"{ \n"
" vec3 result; \n"
" result.r = pow(icol.r, 1.0f/igam.r); \n"
" result.g = pow(icol.g, 1.0f/igam.g); \n"
" result.b = pow(icol.b, 1.0f/igam.b); \n"
" return result; \n"
"} \n]]>"
" </source>"
" </implementation>"
" </implementation>"
"</fragment>";
// Register fragments with the manager if needed
MHWRender::MRenderer* theRenderer = MHWRender::MRenderer::theRenderer();
if (theRenderer)
{
MHWRender::MFragmentManager* fragmentMgr =
theRenderer->getFragmentManager();
if (fragmentMgr)
{
// Add fragments if needed
bool fragAdded = fragmentMgr->hasFragment(sFragmentName);
if (!fragAdded)
{
fragAdded = (sFragmentName == fragmentMgr->addShadeFragmentFromBuffer(sFragmentBody, false));
}
// Use the fragment on successful add
if (fragAdded)
{
fFragmentName = sFragmentName;
}
}
}
}
depthShaderOverride::depthShaderOverride(const MObject& obj)
: MPxSurfaceShadingNodeOverride(obj)
, fFragmentName("")
{
// Define fragments needed for VP2 version of shader, this could also be
// defined in a separate XML file
//
// Define the input and output parameter names to match the input and
// output attribute names so that the values are automatically populated
// on the shader.
//
// Define a separate fragment for computing the camera space position so
// that the operation can be done in the vertex shader rather than the
// pixel shader. Then connect the two fragments together in a graph.
static const MString sFragmentName("depthShaderPluginFragment");
static const char* sFragmentBody =
"<fragment uiName=\"depthShaderPluginFragment\" name=\"depthShaderPluginFragment\" type=\"plumbing\" class=\"ShadeFragment\" version=\"1.0\">"
" <description><![CDATA[Depth shader fragment]]></description>"
" <properties>"
" <float name=\"depthValue\" />"
" <float3 name=\"color\" />"
" <float3 name=\"colorFar\" />"
" <float name=\"near\" />"
" <float name=\"far\" />"
" </properties>"
" <values>"
" <float name=\"depthValue\" value=\"0.0\" />"
" <float3 name=\"color\" value=\"0.0,1.0,0.0\" />"
" <float3 name=\"colorFar\" value=\"0.0,0.0,1.0\" />"
" <float name=\"near\" value=\"0.0\" />"
" <float name=\"far\" value=\"2.0\" />"
" </values>"
" <outputs>"
" <float3 name=\"outColor\" />"
" </outputs>"
" <implementation>"
" <implementation render=\"OGSRenderer\" language=\"Cg\" lang_version=\"2.1\">"
" <function_name val=\"depthShaderPluginFragment\" />"
" <source><![CDATA["
"float3 depthShaderPluginFragment(float depthValue, float3 cNear, float3 cFar, float nearClip, float farClip) \n"
"{ \n"
" float ratio = (farClip + depthValue)/(farClip - nearClip); \n"
" return cNear*ratio + cFar*(1.0f - ratio); \n"
"} \n]]>"
" </source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"HLSL\" lang_version=\"11.0\">"
" <function_name val=\"depthShaderPluginFragment\" />"
" <source><![CDATA["
"float3 depthShaderPluginFragment(float depthValue, float3 cNear, float3 cFar, float nearClip, float farClip) \n"
"{ \n"
" float ratio = (farClip + depthValue)/(farClip - nearClip); \n"
" return cNear*ratio + cFar*(1.0f - ratio); \n"
"} \n]]>"
" </source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"GLSL\" lang_version=\"3.0\">"
" <function_name val=\"depthShaderPluginFragment\" />"
" <source><![CDATA["
"vec3 depthShaderPluginFragment(float depthValue, vec3 cNear, vec3 cFar, float nearClip, float farClip) \n"
"{ \n"
" float ratio = (farClip + depthValue)/(farClip - nearClip); \n"
" return cNear*ratio + cFar*(1.0f - ratio); \n"
"} \n]]>"
" </source>"
" </implementation>"
" </implementation>"
"</fragment>";
static const MString sVertexFragmentName("depthShaderPluginInterpolantFragment");
static const char* sVertexFragmentBody =
"<fragment uiName=\"depthShaderPluginInterpolantFragment\" name=\"depthShaderPluginInterpolantFragment\" type=\"interpolant\" class=\"ShadeFragment\" version=\"1.0\">"
" <description><![CDATA[Depth shader vertex fragment]]></description>"
" <properties>"
" <float3 name=\"Pm\" semantic=\"Pm\" flags=\"varyingInputParam\" />"
" <float4x4 name=\"worldViewProj\" semantic=\"worldviewprojection\" />"
" </properties>"
" <values>"
" </values>"
" <outputs>"
" <float name=\"outDepthValue\" ^1s/>"
" </outputs>"
" <implementation>"
" <implementation render=\"OGSRenderer\" language=\"Cg\" lang_version=\"2.1\">"
" <function_name val=\"depthShaderPluginInterpolantFragment\" />"
" <source><![CDATA["
"float depthShaderPluginInterpolantFragment(float depthValue) \n"
"{ \n"
" return depthValue; \n"
"} \n]]>"
" </source>"
" <vertex_source><![CDATA["
"float idepthShaderPluginInterpolantFragment(float3 Pm, float4x4 worldViewProj) \n"
"{ \n"
" float4 pCamera = mul(worldViewProj, float4(Pm, 1.0f)); \n"
" return (pCamera.z - pCamera.w*2.0f); \n"
"} \n]]>"
" </vertex_source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"HLSL\" lang_version=\"11.0\">"
" <function_name val=\"depthShaderPluginInterpolantFragment\" />"
" <source><![CDATA["
"float depthShaderPluginInterpolantFragment(float depthValue) \n"
"{ \n"
" return depthValue; \n"
"} \n]]>"
" </source>"
" <vertex_source><![CDATA["
"float idepthShaderPluginInterpolantFragment(float3 Pm, float4x4 worldViewProj) \n"
"{ \n"
" float4 pCamera = mul(float4(Pm, 1.0f), worldViewProj); \n"
" return (pCamera.z - pCamera.w*2.0f); \n"
"} \n]]>"
" </vertex_source>"
" </implementation>"
" <implementation render=\"OGSRenderer\" language=\"GLSL\" lang_version=\"3.0\">"
" <function_name val=\"depthShaderPluginInterpolantFragment\" />"
" <source><![CDATA["
"float depthShaderPluginInterpolantFragment(float depthValue) \n"
"{ \n"
" return depthValue; \n"
"} \n]]>"
" </source>"
" <vertex_source><![CDATA["
"float idepthShaderPluginInterpolantFragment(vec3 Pm, mat4 worldViewProj) \n"
"{ \n"
" vec4 pCamera = worldViewProj * vec4(Pm, 1.0f); \n"
" return (pCamera.z - pCamera.w*2.0f); \n"
"} \n]]>"
" </vertex_source>"
" </implementation>"
" </implementation>"
"</fragment>";
static const MString sFragmentGraphName("depthShaderPluginGraph");
static const char* sFragmentGraphBody =
"<fragment_graph name=\"depthShaderPluginGraph\" ref=\"depthShaderPluginGraph\" class=\"FragmentGraph\" version=\"1.0\">"
" <fragments>"
" <fragment_ref name=\"depthShaderPluginFragment\" ref=\"depthShaderPluginFragment\" />"
" <fragment_ref name=\"depthShaderPluginInterpolantFragment\" ref=\"depthShaderPluginInterpolantFragment\" />"
" </fragments>"
" <connections>"
" <connect from=\"depthShaderPluginInterpolantFragment.outDepthValue\" to=\"depthShaderPluginFragment.depthValue\" />"
" </connections>"
" <properties>"
" <float3 name=\"Pm\" ref=\"depthShaderPluginInterpolantFragment.Pm\" semantic=\"Pm\" flags=\"varyingInputParam\" />"
" <float4x4 name=\"worldViewProj\" ref=\"depthShaderPluginInterpolantFragment.worldViewProj\" semantic=\"worldviewprojection\" />"
" <float3 name=\"color\" ref=\"depthShaderPluginFragment.color\" />"
" <float3 name=\"colorFar\" ref=\"depthShaderPluginFragment.colorFar\" />"
" <float name=\"near\" ref=\"depthShaderPluginFragment.near\" />"
" <float name=\"far\" ref=\"depthShaderPluginFragment.far\" />"
" </properties>"
" <values>"
" <float3 name=\"color\" value=\"0.0,1.0,0.0\" />"
" <float3 name=\"colorFar\" value=\"0.0,0.0,1.0\" />"
" <float name=\"near\" value=\"0.0\" />"
" <float name=\"far\" value=\"2.0\" />"
" </values>"
" <outputs>"
" <float3 name=\"outColor\" ref=\"depthShaderPluginFragment.outColor\" />"
" </outputs>"
"</fragment_graph>";
// Register fragments with the manager if needed
MHWRender::MRenderer* theRenderer = MHWRender::MRenderer::theRenderer();
if (theRenderer)
{
MHWRender::MFragmentManager* fragmentMgr =
theRenderer->getFragmentManager();
if (fragmentMgr)
{
// Add fragments if needed
bool fragAdded = fragmentMgr->hasFragment(sFragmentName);
bool vertFragAdded = fragmentMgr->hasFragment(sVertexFragmentName);
bool graphAdded = fragmentMgr->hasFragment(sFragmentGraphName);
if (!fragAdded)
{
fragAdded = (sFragmentName == fragmentMgr->addShadeFragmentFromBuffer(sFragmentBody, false));
}
if (!vertFragAdded)
{
// In DirectX, need to specify a semantic for the output of the vertex shader
MString vertBody;
if (theRenderer->drawAPI() == MHWRender::kDirectX11)
{
vertBody.format(MString(sVertexFragmentBody), MString("semantic=\"extraDepth\" "));
}
else
{
vertBody.format(MString(sVertexFragmentBody), MString(" "));
}
vertFragAdded = (sVertexFragmentName == fragmentMgr->addShadeFragmentFromBuffer(vertBody.asChar(), false));
}
if (!graphAdded)
{
graphAdded = (sFragmentGraphName == fragmentMgr->addFragmentGraphFromBuffer(sFragmentGraphBody));
}
// If we have them all, use the final graph for the override
if (fragAdded && vertFragAdded && graphAdded)
{
fFragmentName = sFragmentGraphName;
}
}
}
}
// Static fragment registration/deregistration methods called from plugin
// init/unint functions. Only need to be called once.
MStatus simpleNoiseShaderOverride::registerFragments()
{
// Get fragment manager for registration
MHWRender::MFragmentManager* fragmentMgr =
MHWRender::MRenderer::theRenderer()
? MHWRender::MRenderer::theRenderer()->getFragmentManager()
: NULL;
// No fragment manager, fail
if (!fragmentMgr) return MS::kFailure;
// Fragments are already registered, return success
if (fragmentMgr->hasFragment(sFinalFragmentGraphName)) return MS::kSuccess;
MString fragmentName;
char* fragmentBody = NULL;
// ------------------------------------------------------------------------
// Struct declaration fragment. This fragment provides the declaration of
// the output structure of the simple noise fragment graph giving support
// for multiple outputs. The struct fragment must be a part of the final
// fragment graph in order to ensure that the fragment system includes
// the declaration of the struct in the final effect.
//
fragmentName = "simpleNoiseOutput";
fragmentBody =
"<fragment uiName=\"simpleNoiseOutput\" name=\"simpleNoiseOutput\" type=\"structure\" class=\"ShadeFragment\" version=\"1.0\"> \r\n"
" <description><![CDATA[Struct output for simple noise shader]]></description> \r\n"
" <properties> \r\n"
" <struct name=\"simpleNoiseOutput\" struct_name=\"simpleNoiseOutput\" /> \r\n"
" </properties> \r\n"
" <values> \r\n"
" </values> \r\n"
" <outputs> \r\n"
" <alias name=\"simpleNoiseOutput\" struct_name=\"simpleNoiseOutput\" /> \r\n"
" <float3 name=\"outColor\" /> \r\n"
" <float name=\"outAlpha\" /> \r\n"
" </outputs> \r\n"
" <implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"Cg\" lang_version=\"2.1\"> \r\n"
" <function_name val=\"\" /> \r\n"
" <declaration name=\"simpleNoiseOutput\"><![CDATA[ \r\n"
"struct simpleNoiseOutput \r\n"
"{ \r\n"
" float3 outColor; \r\n"
" float outAlpha; \r\n"
"}; \r\n"
" ]]></declaration> \r\n"
" </implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"HLSL\" lang_version=\"11.0\"> \r\n"
" <function_name val=\"\" /> \r\n"
" <declaration name=\"simpleNoiseOutput\"><![CDATA[ \r\n"
"struct simpleNoiseOutput \r\n"
"{ \r\n"
" float3 outColor; \r\n"
" float outAlpha; \r\n"
"}; \r\n"
" ]]></declaration> \r\n"
" </implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"GLSL\" lang_version=\"3.0\"> \r\n"
" <function_name val=\"\" /> \r\n"
" <declaration name=\"simpleNoiseOutput\"><![CDATA[ \r\n"
"struct simpleNoiseOutput \r\n"
"{ \r\n"
" vec3 outColor; \r\n"
" float outAlpha; \r\n"
"}; \r\n"
" ]]></declaration> \r\n"
" </implementation> \r\n"
" </implementation> \r\n"
"</fragment> \r\n";
if (fragmentName != fragmentMgr->addShadeFragmentFromBuffer(fragmentBody, false)) return MS::kFailure;
// ------------------------------------------------------------------------
// Actual noise computation fragment. Based on Maya's "wave" noise type
// from the 2d procedural noise texture node. Computes a struct output
// containing both color and alpha to match the outputs of the DG node.
// Uses a 3D texture loaded with the entire Maya noise table for generating
// results consistent with the compute() method of the associated node.
//
fragmentName = "simpleNoiseBase";
fragmentBody =
"<fragment uiName=\"simpleNoiseBase\" name=\"simpleNoiseBase\" type=\"plumbing\" class=\"ShadeFragment\" version=\"1.0\"> \r\n"
" <description><![CDATA[Computes simple 2D procedural noise]]></description> \r\n"
" <properties> \r\n"
" <float2 name=\"uvCoord\" semantic=\"mayaUvCoordSemantic\" flags=\"varyingInputParam\" /> \r\n"
" <texture3 name=\"noiseLookupMap\" /> \r\n"
" <sampler name=\"noiseLookupMapSampler\" /> \r\n"
" <float name=\"amplitude\" /> \r\n"
" <float name=\"ratio\" /> \r\n"
" <int name=\"depthMax\" /> \r\n"
" <float name=\"frequency\" /> \r\n"
" <float name=\"frequencyRatio\" /> \r\n"
" <float name=\"time\" /> \r\n"
" <int name=\"numWaves\" /> \r\n"
" </properties> \r\n"
" <values> \r\n"
" <float name=\"amplitude\" value=\"1.0\" /> \r\n"
" <float name=\"ratio\" value=\"0.707000\" /> \r\n"
" <int name=\"depthMax\" value=\"3\" /> \r\n"
" <float name=\"frequency\" value=\"8.0\" /> \r\n"
" <float name=\"frequencyRatio\" value=\"2.0\" /> \r\n"
" <float name=\"time\" value=\"0.0\" /> \r\n"
" <int name=\"numWaves\" value=\"5\" /> \r\n"
" </values> \r\n"
" <outputs> \r\n"
" <struct name=\"simpleNoiseBase\" struct_name=\"simpleNoiseOutput\" /> \r\n"
" </outputs> \r\n"
" <implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"Cg\" lang_version=\"2.1\"> \r\n"
" <function_name val=\"simpleNoise\" /> \r\n"
" <source><![CDATA[ \r\n"
"float simpleNoise_RawNoiseLookup( \r\n"
" int index, \r\n"
" texture3D noiseLookupMap, \r\n"
" sampler3D noiseLookupMapSampler) \r\n"
"{ \r\n"
" int3 index3; \r\n"
" index3.x = index; \r\n"
" index3.y = (index>> 5); \r\n"
" index3.z = (index>> 10); \r\n"
" index3 &= 31; \r\n"
" float3 uvw = float3(index3) / 32.0f; \r\n"
" return (tex3D(noiseLookupMapSampler, uvw).r * 2.0f) - 1.0f; \r\n"
"} \r\n"
"simpleNoiseOutput simpleNoise( \r\n"
" float2 uv, \r\n"
" texture3D noiseLookupMap, \r\n"
" sampler3D noiseLookupMapSampler, \r\n"
" float amplitude, \r\n"
" float ratio, \r\n"
" int depthMax, \r\n"
" float frequency, \r\n"
" float frequencyRatio, \r\n"
" float time, \r\n"
" int numWaves) \r\n"
"{ \r\n"
" const float M_PI = 3.1415926535897f; \r\n"
" const float M_2PI = 2.0f*M_PI; \r\n"
" simpleNoiseOutput finalResult; \r\n"
" float timeRatio = sqrt(frequencyRatio); \r\n"
" uv *= frequency; \r\n"
" float cosine = 0.0f; \r\n"
" float noise = 0.0f; \r\n"
" int depthId = 0; \r\n"
" int waveId = 0; \r\n"
" int seedOffset = 0; \r\n"
" while (depthId<depthMax && waveId<numWaves) { \r\n"
" int step = depthId; \r\n"
" int seed = 50*step; \r\n"
" float2 dir = float2( \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler), \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler)); \r\n"
" float norm = length(dir); \r\n"
" if (norm <= 0.0f) continue; \r\n"
" dir /= norm; \r\n"
" noise += cos(dir.x*uv.x*M_2PI + dir.y*uv.y*M_2PI + M_PI*simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler) + time*M_PI); \r\n"
" ++waveId; \r\n"
" if (waveId < numWaves) continue; \r\n"
" noise /= float(numWaves); \r\n"
" uv *= frequencyRatio; \r\n"
" time *= timeRatio; \r\n"
" cosine += amplitude * noise; \r\n"
" amplitude *= ratio; \r\n"
" noise = 0.0f; \r\n"
" waveId = 0; \r\n"
" seedOffset = 0; \r\n"
" ++depthId; \r\n"
" } \r\n"
" cosine = 0.5f*cosine + 0.5f; \r\n"
" float noiseVal = (cosine> 1.0f) ? 1.0f : cosine; \r\n"
" finalResult.outColor = float3(noiseVal, noiseVal, noiseVal); \r\n"
" finalResult.outAlpha = noiseVal; \r\n"
" return finalResult; \r\n"
"} \r\n"
" ]]></source> \r\n"
" </implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"HLSL\" lang_version=\"11.0\"> \r\n"
" <function_name val=\"simpleNoise\" /> \r\n"
" <source><![CDATA[ \r\n"
"float simpleNoise_RawNoiseLookup( \r\n"
" int index, \r\n"
" Texture3D noiseLookupMap, \r\n"
" sampler noiseLookupMapSampler) \r\n"
"{ \r\n"
" int3 index3; \r\n"
" index3.x = index; \r\n"
" index3.y = (index>> 5); \r\n"
" index3.z = (index>> 10); \r\n"
" index3 &= 31; \r\n"
" float3 uvw = float3(index3) / 32.0f; \r\n"
" return (noiseLookupMap.SampleLevel(noiseLookupMapSampler, uvw, 0).r * 2.0f) - 1.0f; \r\n"
"} \r\n"
"simpleNoiseOutput simpleNoise( \r\n"
" float2 uv, \r\n"
" Texture3D noiseLookupMap, \r\n"
" sampler noiseLookupMapSampler, \r\n"
" float amplitude, \r\n"
" float ratio, \r\n"
" int depthMax, \r\n"
" float frequency, \r\n"
" float frequencyRatio, \r\n"
" float time, \r\n"
" int numWaves) \r\n"
"{ \r\n"
" const float M_PI = 3.1415926535897f; \r\n"
" const float M_2PI = 2.0f*M_PI; \r\n"
" simpleNoiseOutput finalResult; \r\n"
" float timeRatio = sqrt(frequencyRatio); \r\n"
" uv *= frequency; \r\n"
" float cosine = 0.0f; \r\n"
" float noise = 0.0f; \r\n"
" int depthId = 0; \r\n"
" int waveId = 0; \r\n"
" int seedOffset = 0; \r\n"
" while (depthId<depthMax && waveId<numWaves) { \r\n"
" int step = depthId; \r\n"
" int seed = 50*step; \r\n"
" float2 dir = float2( \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler), \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler)); \r\n"
" float norm = length(dir); \r\n"
" if (norm <= 0.0f) continue; \r\n"
" dir /= norm; \r\n"
" noise += cos(dir.x*uv.x*M_2PI + dir.y*uv.y*M_2PI + M_PI*simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMap, noiseLookupMapSampler) + time*M_PI); \r\n"
" ++waveId; \r\n"
" if (waveId < numWaves) continue; \r\n"
" noise /= float(numWaves); \r\n"
" uv *= frequencyRatio; \r\n"
" time *= timeRatio; \r\n"
" cosine += amplitude * noise; \r\n"
" amplitude *= ratio; \r\n"
" noise = 0.0f; \r\n"
" waveId = 0; \r\n"
" seedOffset = 0; \r\n"
" ++depthId; \r\n"
" } \r\n"
" cosine = 0.5f*cosine + 0.5f; \r\n"
" float noiseVal = (cosine> 1.0f) ? 1.0f : cosine; \r\n"
" finalResult.outColor = float3(noiseVal, noiseVal, noiseVal); \r\n"
" finalResult.outAlpha = noiseVal; \r\n"
" return finalResult; \r\n"
"} \r\n"
" ]]></source> \r\n"
" </implementation> \r\n"
" <implementation render=\"OGSRenderer\" language=\"GLSL\" lang_version=\"3.0\"> \r\n"
" <function_name val=\"simpleNoise\" /> \r\n"
" <source><![CDATA[ \r\n"
"float simpleNoise_RawNoiseLookup( \r\n"
" int index, \r\n"
" sampler3D noiseLookupMapSampler) \r\n"
"{ \r\n"
" ivec3 index3; \r\n"
" index3.x = index; \r\n"
" index3.y = (index >> 5); \r\n"
" index3.z = (index >> 10); \r\n"
" index3 &= 31; \r\n"
" vec3 uvw = vec3(index3) / 32.0f; \r\n"
" return (texture(noiseLookupMapSampler, uvw).r * 2.0f) - 1.0f; \r\n"
"} \r\n"
"simpleNoiseOutput simpleNoise( \r\n"
" vec2 uv, \r\n"
" sampler3D noiseLookupMapSampler, \r\n"
" float amplitude, \r\n"
" float ratio, \r\n"
" int depthMax, \r\n"
" float frequency, \r\n"
" float frequencyRatio, \r\n"
" float time, \r\n"
" int numWaves) \r\n"
"{ \r\n"
" const float M_PI = 3.1415926535897f; \r\n"
" const float M_2PI = 2.0f*M_PI; \r\n"
" simpleNoiseOutput finalResult; \r\n"
" float timeRatio = sqrt(frequencyRatio); \r\n"
" uv *= frequency; \r\n"
" float cosine = 0.0f; \r\n"
" float noise = 0.0f; \r\n"
" int depthId = 0; \r\n"
" int waveId = 0; \r\n"
" int seedOffset = 0; \r\n"
" while (depthId<depthMax && waveId<numWaves) { \r\n"
" int step = depthId; \r\n"
" int seed = 50*step; \r\n"
" vec2 dir = vec2( \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMapSampler), \r\n"
" simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMapSampler)); \r\n"
" float norm = length(dir); \r\n"
" if (norm <= 0.0f) continue; \r\n"
" dir /= norm; \r\n"
" noise += cos(dir.x*uv.x*M_2PI + dir.y*uv.y*M_2PI + M_PI*simpleNoise_RawNoiseLookup(seed + seedOffset++, noiseLookupMapSampler) + time*M_PI); \r\n"
" ++waveId; \r\n"
" if (waveId < numWaves) continue; \r\n"
" noise /= float(numWaves); \r\n"
" uv *= frequencyRatio; \r\n"
" time *= timeRatio; \r\n"
" cosine += amplitude * noise; \r\n"
" amplitude *= ratio; \r\n"
" noise = 0.0f; \r\n"
" waveId = 0; \r\n"
" seedOffset = 0; \r\n"
" ++depthId; \r\n"
" } \r\n"
" cosine = 0.5f*cosine + 0.5f; \r\n"
" float noiseVal = (cosine > 1.0f) ? 1.0f : cosine; \r\n"
" finalResult.outColor = vec3(noiseVal, noiseVal, noiseVal); \r\n"
" finalResult.outAlpha = noiseVal; \r\n"
" return finalResult; \r\n"
"} \r\n"
" ]]></source> \r\n"
" </implementation> \r\n"
" </implementation> \r\n"
"</fragment> \r\n";
if (fragmentName != fragmentMgr->addShadeFragmentFromBuffer(fragmentBody, false)) return MS::kFailure;
// ------------------------------------------------------------------------
// Full, final graph made up of previously registered fragments. A picture
// which flows from top to bottom.
//
// simpleNoiseBase
// |
// simpleNoiseOutput
// |
// <FINAL RESULT>
//
// Maya's shader translation system will take this graph and connect UV
// information where appropriate.
//
// From Maya's point of view, this graph is fully representative of the
// associated shading node in the DG. All inputs and outputs on this graph
// are matched to inputs and outputs on the DG node. Connections to other
// nodes (input or output) will be mirrored by connections to other
// fragments using the matching parameters.
//
fragmentName = sFinalFragmentGraphName;
fragmentBody =
"<fragment_graph name=\"simpleNoise\" ref=\"simpleNoise\" class=\"FragmentGraph\" version=\"1.0\"> \r\n"
" <fragments> \r\n"
" <fragment_ref name=\"simpleNoiseBase\" ref=\"simpleNoiseBase\" /> \r\n"
" <fragment_ref name=\"simpleNoiseOutput\" ref=\"simpleNoiseOutput\" /> \r\n"
" </fragments> \r\n"
" <connections> \r\n"
" <connect from=\"simpleNoiseBase.simpleNoiseBase\" to=\"simpleNoiseOutput.simpleNoiseOutput\" name=\"simpleNoiseOutput\" /> \r\n"
" </connections> \r\n"
" <properties> \r\n"
" <float2 name=\"uvCoord\" ref=\"simpleNoiseBase.uvCoord\" semantic=\"mayaUvCoordSemantic\" flags=\"varyingInputParam\" /> \r\n"
" <texture3 name=\"noiseLookupMap\" ref=\"simpleNoiseBase.noiseLookupMap\" /> \r\n"
" <sampler name=\"noiseLookupMapSampler\" ref=\"simpleNoiseBase.noiseLookupMapSampler\" /> \r\n"
" <float name=\"amplitude\" ref=\"simpleNoiseBase.amplitude\" /> \r\n"
" <float name=\"ratio\" ref=\"simpleNoiseBase.ratio\" /> \r\n"
" <int name=\"depthMax\" ref=\"simpleNoiseBase.depthMax\" /> \r\n"
" <float name=\"frequency\" ref=\"simpleNoiseBase.frequency\" /> \r\n"
" <float name=\"frequencyRatio\" ref=\"simpleNoiseBase.frequencyRatio\" /> \r\n"
" <float name=\"time\" ref=\"simpleNoiseBase.time\" /> \r\n"
" <int name=\"numWaves\" ref=\"simpleNoiseBase.numWaves\" /> \r\n"
" </properties> \r\n"
" <values> \r\n"
" <float name=\"amplitude\" value=\"1.0\" /> \r\n"
" <float name=\"ratio\" value=\"0.707000\" /> \r\n"
" <int name=\"depthMax\" value=\"3\" /> \r\n"
" <float name=\"frequency\" value=\"8.0\" /> \r\n"
" <float name=\"frequencyRatio\" value=\"2.0\" /> \r\n"
" <float name=\"time\" value=\"0.0\" /> \r\n"
" <int name=\"numWaves\" value=\"5\" /> \r\n"
" </values> \r\n"
" <outputs> \r\n"
" <struct name=\"simpleNoiseOutput\" ref=\"simpleNoiseOutput.simpleNoiseOutput\" /> \r\n"
" </outputs> \r\n"
"</fragment_graph> \r\n";
if (fragmentName != fragmentMgr->addFragmentGraphFromBuffer(fragmentBody)) return MS::kFailure;
return MS::kSuccess;
}