libs/rs/rsProgram.cpp - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2009 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #ifndef ANDROID_RS_BUILD_FOR_HOST
 #include "rsContext.h"
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #else
 #include "rsContextHostStub.h"
 #include <OpenGL/gl.h>
 #include <OpenGL/glext.h>
 #endif //ANDROID_RS_BUILD_FOR_HOST

 #include "rsProgram.h"

 using namespace android;
 using namespace android::renderscript;


 Program::Program(Context *rsc) : ObjectBase(rsc)
 {
     mAllocFile = __FILE__;
     mAllocLine = __LINE__;
     mDirty = true;
     mShaderID = 0;
     mAttribCount = 0;
     mUniformCount = 0;

     mInputElements = NULL;
     mOutputElements = NULL;
     mConstantTypes = NULL;
     mInputCount = 0;
     mOutputCount = 0;
     mConstantCount = 0;
     mIsValid = false;
 }

 Program::Program(Context *rsc, const char * shaderText, uint32_t shaderLength,
                  const uint32_t * params, uint32_t paramLength) :
     ObjectBase(rsc)
 {
     mAllocFile = __FILE__;
     mAllocLine = __LINE__;
     mDirty = true;
     mShaderID = 0;
     mAttribCount = 0;
     mUniformCount = 0;
     mTextureCount = 0;

     mInputCount = 0;
     mOutputCount = 0;
     mConstantCount = 0;

     for (uint32_t ct=0; ct < paramLength; ct+=2) {
         if (params[ct] == RS_PROGRAM_PARAM_INPUT) {
             mInputCount++;
         }
         if (params[ct] == RS_PROGRAM_PARAM_OUTPUT) {
             mOutputCount++;
         }
         if (params[ct] == RS_PROGRAM_PARAM_CONSTANT) {
             mConstantCount++;
         }
         if (params[ct] == RS_PROGRAM_PARAM_TEXTURE_COUNT) {
             mTextureCount = params[ct+1];
         }
     }

     mInputElements = new ObjectBaseRef<Element>[mInputCount];
     mOutputElements = new ObjectBaseRef<Element>[mOutputCount];
     mConstantTypes = new ObjectBaseRef<Type>[mConstantCount];

     uint32_t input = 0;
     uint32_t output = 0;
     uint32_t constant = 0;
     for (uint32_t ct=0; ct < paramLength; ct+=2) {
         if (params[ct] == RS_PROGRAM_PARAM_INPUT) {
             mInputElements[input++].set(reinterpret_cast<Element *>(params[ct+1]));
         }
         if (params[ct] == RS_PROGRAM_PARAM_OUTPUT) {
             mOutputElements[output++].set(reinterpret_cast<Element *>(params[ct+1]));
         }
         if (params[ct] == RS_PROGRAM_PARAM_CONSTANT) {
             mConstantTypes[constant++].set(reinterpret_cast<Type *>(params[ct+1]));
         }
     }
     mUserShader.setTo(shaderText, shaderLength);
 }

 Program::~Program()
 {
     for (uint32_t ct=0; ct < MAX_UNIFORMS; ct++) {
         bindAllocation(NULL, ct);
     }

     delete[] mInputElements;
     delete[] mOutputElements;
     delete[] mConstantTypes;
     mInputCount = 0;
     mOutputCount = 0;
     mConstantCount = 0;
 }


 void Program::bindAllocation(Allocation *alloc, uint32_t slot)
 {
     if (mConstants[slot].get() == alloc) {
         return;
     }
     if (mConstants[slot].get()) {
         mConstants[slot].get()->removeProgramToDirty(this);
     }
     mConstants[slot].set(alloc);
     if (alloc) {
         alloc->addProgramToDirty(this);
     }
     mDirty = true;
 }

 void Program::bindTexture(uint32_t slot, Allocation *a)
 {
     if (slot >= MAX_TEXTURE) {
         LOGE("Attempt to bind a texture to a slot > MAX_TEXTURE");
         return;
     }

     //LOGE("bindtex %i %p", slot, a);
     mTextures[slot].set(a);
     mDirty = true;
 }

 void Program::bindSampler(uint32_t slot, Sampler *s)
 {
     if (slot >= MAX_TEXTURE) {
         LOGE("Attempt to bind a Sampler to a slot > MAX_TEXTURE");
         return;
     }

     mSamplers[slot].set(s);
     mDirty = true;
 }

 String8 Program::getGLSLInputString() const
 {
     String8 s;
     for (uint32_t ct=0; ct < mInputCount; ct++) {
         const Element *e = mInputElements[ct].get();
         for (uint32_t field=0; field < e->getFieldCount(); field++) {
             const Element *f = e->getField(field);

             // Cannot be complex
             rsAssert(!f->getFieldCount());
             switch(f->getComponent().getVectorSize()) {
             case 1: s.append("attribute float ATTRIB_"); break;
             case 2: s.append("attribute vec2 ATTRIB_"); break;
             case 3: s.append("attribute vec3 ATTRIB_"); break;
             case 4: s.append("attribute vec4 ATTRIB_"); break;
             default:
                 rsAssert(0);
             }

             s.append(e->getFieldName(field));
             s.append(";\n");
         }
     }
     return s;
 }

 String8 Program::getGLSLOutputString() const
 {
     return String8();
 }

 String8 Program::getGLSLConstantString() const
 {
     return String8();
 }


 void Program::createShader()
 {
 }

 bool Program::loadShader(Context *rsc, uint32_t type)
 {
     mShaderID = glCreateShader(type);
     rsAssert(mShaderID);

     if (rsc->props.mLogShaders) {
         LOGV("Loading shader type %x, ID %i", type, mShaderID);
         LOGV("%s", mShader.string());
     }

     if (mShaderID) {
         const char * ss = mShader.string();
         glShaderSource(mShaderID, 1, &ss, NULL);
         glCompileShader(mShaderID);

         GLint compiled = 0;
         glGetShaderiv(mShaderID, GL_COMPILE_STATUS, &compiled);
         if (!compiled) {
             GLint infoLen = 0;
             glGetShaderiv(mShaderID, GL_INFO_LOG_LENGTH, &infoLen);
             if (infoLen) {
                 char* buf = (char*) malloc(infoLen);
                 if (buf) {
                     glGetShaderInfoLog(mShaderID, infoLen, NULL, buf);
                     LOGE("Could not compile shader \n%s\n", buf);
                     free(buf);
                 }
                 glDeleteShader(mShaderID);
                 mShaderID = 0;
                 rsc->setError(RS_ERROR_BAD_SHADER, "Error returned from GL driver loading shader text,");
                 return false;
             }
         }
     }

     if (rsc->props.mLogShaders) {
         LOGV("--Shader load result %x ", glGetError());
     }
     mIsValid = true;
     return true;
 }

 void Program::setShader(const char *txt, uint32_t len)
 {
     mUserShader.setTo(txt, len);
 }

 void Program::appendUserConstants() {
     for (uint32_t ct=0; ct < mConstantCount; ct++) {
         const Element *e = mConstantTypes[ct]->getElement();
         for (uint32_t field=0; field < e->getFieldCount(); field++) {
             const Element *f = e->getField(field);
             const char *fn = e->getFieldName(field);

             if (fn[0] == '#') {
                 continue;
             }

             // Cannot be complex
             rsAssert(!f->getFieldCount());
             if(f->getType() == RS_TYPE_MATRIX_4X4) {
                 mShader.append("uniform mat4 UNI_");
             }
             else if(f->getType() == RS_TYPE_MATRIX_3X3) {
                 mShader.append("uniform mat3 UNI_");
             }
             else if(f->getType() == RS_TYPE_MATRIX_2X2) {
                 mShader.append("uniform mat2 UNI_");
             }
             else {
                 switch(f->getComponent().getVectorSize()) {
                 case 1: mShader.append("uniform float UNI_"); break;
                 case 2: mShader.append("uniform vec2 UNI_"); break;
                 case 3: mShader.append("uniform vec3 UNI_"); break;
                 case 4: mShader.append("uniform vec4 UNI_"); break;
                 default:
                     rsAssert(0);
                 }
             }

             mShader.append(fn);
             mShader.append(";\n");
         }
     }
 }

 void Program::setupUserConstants(ShaderCache *sc, bool isFragment) {
     uint32_t uidx = 1;
     for (uint32_t ct=0; ct < mConstantCount; ct++) {
         Allocation *alloc = mConstants[ct+1].get();
         if (!alloc) {
             continue;
         }

         const uint8_t *data = static_cast<const uint8_t *>(alloc->getPtr());
         const Element *e = mConstantTypes[ct]->getElement();
         for (uint32_t field=0; field < e->getFieldCount(); field++) {
             const Element *f = e->getField(field);
             const char *fieldName = e->getFieldName(field);
             // If this field is padding, skip it
             if(fieldName[0] == '#') {
                 continue;
             }

             uint32_t offset = e->getFieldOffsetBytes(field);
             const float *fd = reinterpret_cast<const float *>(&data[offset]);

             int32_t slot = -1;
             if(!isFragment) {
                 slot = sc->vtxUniformSlot(uidx);
             }
             else {
                 slot = sc->fragUniformSlot(uidx);
             }

             //LOGE("Uniform  slot=%i, offset=%i, constant=%i, field=%i, uidx=%i, name=%s", slot, offset, ct, field, uidx, fieldName);
             if (slot >= 0) {
                 if(f->getType() == RS_TYPE_MATRIX_4X4) {
                     glUniformMatrix4fv(slot, 1, GL_FALSE, fd);
                 }
                 else if(f->getType() == RS_TYPE_MATRIX_3X3) {
                     glUniformMatrix3fv(slot, 1, GL_FALSE, fd);
                 }
                 else if(f->getType() == RS_TYPE_MATRIX_2X2) {
                     glUniformMatrix2fv(slot, 1, GL_FALSE, fd);
                 }
                 else {
                     switch(f->getComponent().getVectorSize()) {
                     case 1:
                         //LOGE("Uniform 1 = %f", fd[0]);
                         glUniform1fv(slot, 1, fd);
                         break;
                     case 2:
                         //LOGE("Uniform 2 = %f %f", fd[0], fd[1]);
                         glUniform2fv(slot, 1, fd);
                         break;
                     case 3:
                         //LOGE("Uniform 3 = %f %f %f", fd[0], fd[1], fd[2]);
                         glUniform3fv(slot, 1, fd);
                         break;
                     case 4:
                         //LOGE("Uniform 4 = %f %f %f %f", fd[0], fd[1], fd[2], fd[3]);
                         glUniform4fv(slot, 1, fd);
                         break;
                     default:
                         rsAssert(0);
                     }
                 }
             }
             uidx ++;
         }
     }
 }

 void Program::initAddUserElement(const Element *e, String8 *names, uint32_t *count, const char *prefix)
 {
     rsAssert(e->getFieldCount());
     for (uint32_t ct=0; ct < e->getFieldCount(); ct++) {
         const Element *ce = e->getField(ct);
         if (ce->getFieldCount()) {
             initAddUserElement(ce, names, count, prefix);
         }
         else if(e->getFieldName(ct)[0] != '#') {
             String8 tmp(prefix);
             tmp.append(e->getFieldName(ct));
             names[*count].setTo(tmp.string());
             (*count)++;
         }
     }
 }

 namespace android {
 namespace renderscript {


 void rsi_ProgramBindConstants(Context *rsc, RsProgram vp, uint32_t slot, RsAllocation constants)
 {
     Program *p = static_cast<Program *>(vp);
     p->bindAllocation(static_cast<Allocation *>(constants), slot);
 }

 void rsi_ProgramBindTexture(Context *rsc, RsProgram vpf, uint32_t slot, RsAllocation a)
 {
     Program *p = static_cast<Program *>(vpf);
     p->bindTexture(slot, static_cast<Allocation *>(a));
 }

 void rsi_ProgramBindSampler(Context *rsc, RsProgram vpf, uint32_t slot, RsSampler s)
 {
     Program *p = static_cast<Program *>(vpf);
     p->bindSampler(slot, static_cast<Sampler *>(s));
 }

 }
 }
	/*
	* Copyright (C) 2009 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#ifndef ANDROID_RS_BUILD_FOR_HOST
	#include "rsContext.h"
	#include <GLES2/gl2.h>
	#include <GLES2/gl2ext.h>
	#else
	#include "rsContextHostStub.h"
	#include <OpenGL/gl.h>
	#include <OpenGL/glext.h>
	#endif //ANDROID_RS_BUILD_FOR_HOST

	#include "rsProgram.h"

	using namespace android;
	using namespace android::renderscript;


	Program::Program(Context *rsc) : ObjectBase(rsc)
	{
	mAllocFile = __FILE__;
	mAllocLine = __LINE__;
	mDirty = true;
	mShaderID = 0;
	mAttribCount = 0;
	mUniformCount = 0;

	mInputElements = NULL;
	mOutputElements = NULL;
	mConstantTypes = NULL;
	mInputCount = 0;
	mOutputCount = 0;
	mConstantCount = 0;
	mIsValid = false;
	}

	Program::Program(Context rsc, const char shaderText, uint32_t shaderLength,
	const uint32_t * params, uint32_t paramLength) :
	ObjectBase(rsc)
	{
	mAllocFile = __FILE__;
	mAllocLine = __LINE__;
	mDirty = true;
	mShaderID = 0;
	mAttribCount = 0;
	mUniformCount = 0;
	mTextureCount = 0;

	mInputCount = 0;
	mOutputCount = 0;
	mConstantCount = 0;

	for (uint32_t ct=0; ct < paramLength; ct+=2) {
	if (params[ct] == RS_PROGRAM_PARAM_INPUT) {
	mInputCount++;
	}
	if (params[ct] == RS_PROGRAM_PARAM_OUTPUT) {
	mOutputCount++;
	}
	if (params[ct] == RS_PROGRAM_PARAM_CONSTANT) {
	mConstantCount++;
	}
	if (params[ct] == RS_PROGRAM_PARAM_TEXTURE_COUNT) {
	mTextureCount = params[ct+1];
	}
	}

	mInputElements = new ObjectBaseRef<Element>[mInputCount];
	mOutputElements = new ObjectBaseRef<Element>[mOutputCount];
	mConstantTypes = new ObjectBaseRef<Type>[mConstantCount];

	uint32_t input = 0;
	uint32_t output = 0;
	uint32_t constant = 0;
	for (uint32_t ct=0; ct < paramLength; ct+=2) {
	if (params[ct] == RS_PROGRAM_PARAM_INPUT) {
	mInputElements[input++].set(reinterpret_cast<Element *>(params[ct+1]));
	}
	if (params[ct] == RS_PROGRAM_PARAM_OUTPUT) {
	mOutputElements[output++].set(reinterpret_cast<Element *>(params[ct+1]));
	}
	if (params[ct] == RS_PROGRAM_PARAM_CONSTANT) {
	mConstantTypes[constant++].set(reinterpret_cast<Type *>(params[ct+1]));
	}
	}
	mUserShader.setTo(shaderText, shaderLength);
	}

	Program::~Program()
	{
	for (uint32_t ct=0; ct < MAX_UNIFORMS; ct++) {
	bindAllocation(NULL, ct);
	}

	delete[] mInputElements;
	delete[] mOutputElements;
	delete[] mConstantTypes;
	mInputCount = 0;
	mOutputCount = 0;
	mConstantCount = 0;
	}


	void Program::bindAllocation(Allocation *alloc, uint32_t slot)
	{
	if (mConstants[slot].get() == alloc) {
	return;
	}
	if (mConstants[slot].get()) {
	mConstants[slot].get()->removeProgramToDirty(this);
	}
	mConstants[slot].set(alloc);
	if (alloc) {
	alloc->addProgramToDirty(this);
	}
	mDirty = true;
	}

	void Program::bindTexture(uint32_t slot, Allocation *a)
	{
	if (slot >= MAX_TEXTURE) {
	LOGE("Attempt to bind a texture to a slot > MAX_TEXTURE");
	return;
	}

	//LOGE("bindtex %i %p", slot, a);
	mTextures[slot].set(a);
	mDirty = true;
	}

	void Program::bindSampler(uint32_t slot, Sampler *s)
	{
	if (slot >= MAX_TEXTURE) {
	LOGE("Attempt to bind a Sampler to a slot > MAX_TEXTURE");
	return;
	}

	mSamplers[slot].set(s);
	mDirty = true;
	}

	String8 Program::getGLSLInputString() const
	{
	String8 s;
	for (uint32_t ct=0; ct < mInputCount; ct++) {
	const Element *e = mInputElements[ct].get();
	for (uint32_t field=0; field < e->getFieldCount(); field++) {
	const Element *f = e->getField(field);

	// Cannot be complex
	rsAssert(!f->getFieldCount());
	switch(f->getComponent().getVectorSize()) {
	case 1: s.append("attribute float ATTRIB_"); break;
	case 2: s.append("attribute vec2 ATTRIB_"); break;
	case 3: s.append("attribute vec3 ATTRIB_"); break;
	case 4: s.append("attribute vec4 ATTRIB_"); break;
	default:
	rsAssert(0);
	}

	s.append(e->getFieldName(field));
	s.append(";\n");
	}
	}
	return s;
	}

	String8 Program::getGLSLOutputString() const
	{
	return String8();
	}

	String8 Program::getGLSLConstantString() const
	{
	return String8();
	}


	void Program::createShader()
	{
	}

	bool Program::loadShader(Context *rsc, uint32_t type)
	{
	mShaderID = glCreateShader(type);
	rsAssert(mShaderID);

	if (rsc->props.mLogShaders) {
	LOGV("Loading shader type %x, ID %i", type, mShaderID);
	LOGV("%s", mShader.string());
	}

	if (mShaderID) {
	const char * ss = mShader.string();
	glShaderSource(mShaderID, 1, &ss, NULL);
	glCompileShader(mShaderID);

	GLint compiled = 0;
	glGetShaderiv(mShaderID, GL_COMPILE_STATUS, &compiled);
	if (!compiled) {
	GLint infoLen = 0;
	glGetShaderiv(mShaderID, GL_INFO_LOG_LENGTH, &infoLen);
	if (infoLen) {
	char* buf = (char*) malloc(infoLen);
	if (buf) {
	glGetShaderInfoLog(mShaderID, infoLen, NULL, buf);
	LOGE("Could not compile shader \n%s\n", buf);
	free(buf);
	}
	glDeleteShader(mShaderID);
	mShaderID = 0;
	rsc->setError(RS_ERROR_BAD_SHADER, "Error returned from GL driver loading shader text,");
	return false;
	}
	}
	}

	if (rsc->props.mLogShaders) {
	LOGV("--Shader load result %x ", glGetError());
	}
	mIsValid = true;
	return true;
	}

	void Program::setShader(const char *txt, uint32_t len)
	{
	mUserShader.setTo(txt, len);
	}

	void Program::appendUserConstants() {
	for (uint32_t ct=0; ct < mConstantCount; ct++) {
	const Element *e = mConstantTypes[ct]->getElement();
	for (uint32_t field=0; field < e->getFieldCount(); field++) {
	const Element *f = e->getField(field);
	const char *fn = e->getFieldName(field);

	if (fn[0] == '#') {
	continue;
	}

	// Cannot be complex
	rsAssert(!f->getFieldCount());
	if(f->getType() == RS_TYPE_MATRIX_4X4) {
	mShader.append("uniform mat4 UNI_");
	}
	else if(f->getType() == RS_TYPE_MATRIX_3X3) {
	mShader.append("uniform mat3 UNI_");
	}
	else if(f->getType() == RS_TYPE_MATRIX_2X2) {
	mShader.append("uniform mat2 UNI_");
	}
	else {
	switch(f->getComponent().getVectorSize()) {
	case 1: mShader.append("uniform float UNI_"); break;
	case 2: mShader.append("uniform vec2 UNI_"); break;
	case 3: mShader.append("uniform vec3 UNI_"); break;
	case 4: mShader.append("uniform vec4 UNI_"); break;
	default:
	rsAssert(0);
	}
	}

	mShader.append(fn);
	mShader.append(";\n");
	}
	}
	}

	void Program::setupUserConstants(ShaderCache *sc, bool isFragment) {
	uint32_t uidx = 1;
	for (uint32_t ct=0; ct < mConstantCount; ct++) {
	Allocation *alloc = mConstants[ct+1].get();
	if (!alloc) {
	continue;
	}

	const uint8_t data = static_cast<const uint8_t >(alloc->getPtr());
	const Element *e = mConstantTypes[ct]->getElement();
	for (uint32_t field=0; field < e->getFieldCount(); field++) {
	const Element *f = e->getField(field);
	const char *fieldName = e->getFieldName(field);
	// If this field is padding, skip it
	if(fieldName[0] == '#') {
	continue;
	}

	uint32_t offset = e->getFieldOffsetBytes(field);
	const float fd = reinterpret_cast<const float >(&data[offset]);

	int32_t slot = -1;
	if(!isFragment) {
	slot = sc->vtxUniformSlot(uidx);
	}
	else {
	slot = sc->fragUniformSlot(uidx);
	}

	//LOGE("Uniform slot=%i, offset=%i, constant=%i, field=%i, uidx=%i, name=%s", slot, offset, ct, field, uidx, fieldName);
	if (slot >= 0) {
	if(f->getType() == RS_TYPE_MATRIX_4X4) {
	glUniformMatrix4fv(slot, 1, GL_FALSE, fd);
	}
	else if(f->getType() == RS_TYPE_MATRIX_3X3) {
	glUniformMatrix3fv(slot, 1, GL_FALSE, fd);
	}
	else if(f->getType() == RS_TYPE_MATRIX_2X2) {
	glUniformMatrix2fv(slot, 1, GL_FALSE, fd);
	}
	else {
	switch(f->getComponent().getVectorSize()) {
	case 1:
	//LOGE("Uniform 1 = %f", fd[0]);
	glUniform1fv(slot, 1, fd);
	break;
	case 2:
	//LOGE("Uniform 2 = %f %f", fd[0], fd[1]);
	glUniform2fv(slot, 1, fd);
	break;
	case 3:
	//LOGE("Uniform 3 = %f %f %f", fd[0], fd[1], fd[2]);
	glUniform3fv(slot, 1, fd);
	break;
	case 4:
	//LOGE("Uniform 4 = %f %f %f %f", fd[0], fd[1], fd[2], fd[3]);
	glUniform4fv(slot, 1, fd);
	break;
	default:
	rsAssert(0);
	}
	}
	}
	uidx ++;
	}
	}
	}

	void Program::initAddUserElement(const Element e, String8 names, uint32_t count, const char prefix)
	{
	rsAssert(e->getFieldCount());
	for (uint32_t ct=0; ct < e->getFieldCount(); ct++) {
	const Element *ce = e->getField(ct);
	if (ce->getFieldCount()) {
	initAddUserElement(ce, names, count, prefix);
	}
	else if(e->getFieldName(ct)[0] != '#') {
	String8 tmp(prefix);
	tmp.append(e->getFieldName(ct));
	names[*count].setTo(tmp.string());
	(*count)++;
	}
	}
	}

	namespace android {
	namespace renderscript {


	void rsi_ProgramBindConstants(Context *rsc, RsProgram vp, uint32_t slot, RsAllocation constants)
	{
	Program p = static_cast<Program >(vp);
	p->bindAllocation(static_cast<Allocation *>(constants), slot);
	}

	void rsi_ProgramBindTexture(Context *rsc, RsProgram vpf, uint32_t slot, RsAllocation a)
	{
	Program p = static_cast<Program >(vpf);
	p->bindTexture(slot, static_cast<Allocation *>(a));
	}

	void rsi_ProgramBindSampler(Context *rsc, RsProgram vpf, uint32_t slot, RsSampler s)
	{
	Program p = static_cast<Program >(vpf);
	p->bindSampler(slot, static_cast<Sampler *>(s));
	}

	}
	}