/** * @file llpostprocess.cpp * @brief LLPostProcess class implementation * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #include "linden_common.h" #include "llpostprocess.h" #include "llglslshader.h" #include "llsdserialize.h" #include "llrender.h" static LLStaticHashedString sRenderTexture("RenderTexture"); static LLStaticHashedString sBrightness("brightness"); static LLStaticHashedString sContrast("contrast"); static LLStaticHashedString sContrastBase("contrastBase"); static LLStaticHashedString sSaturation("saturation"); static LLStaticHashedString sLumWeights("lumWeights"); static LLStaticHashedString sNoiseTexture("NoiseTexture"); static LLStaticHashedString sBrightMult("brightMult"); static LLStaticHashedString sNoiseStrength("noiseStrength"); static LLStaticHashedString sExtractLow("extractLow"); static LLStaticHashedString sExtractHigh("extractHigh"); static LLStaticHashedString sBloomStrength("bloomStrength"); static LLStaticHashedString sTexelSize("texelSize"); static LLStaticHashedString sBlurDirection("blurDirection"); static LLStaticHashedString sBlurWidth("blurWidth"); LLPostProcess * gPostProcess = NULL; static const unsigned int NOISE_SIZE = 512; LLPostProcess::LLPostProcess(void) : initialized(false), mAllEffects(LLSD::emptyMap()), screenW(1), screenH(1) { mSceneRenderTexture = NULL ; mNoiseTexture = NULL ; mTempBloomTexture = NULL ; noiseTextureScale = 1.0f; /* Do nothing. Needs to be updated to use our current shader system, and to work with the move into llrender. std::string pathName(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "windlight", XML_FILENAME)); LL_DEBUGS("AppInit", "Shaders") << "Loading PostProcess Effects settings from " << pathName << LL_ENDL; llifstream effectsXML(pathName); if (effectsXML) { LLPointer<LLSDParser> parser = new LLSDXMLParser(); parser->parse(effectsXML, mAllEffects, LLSDSerialize::SIZE_UNLIMITED); } if (!mAllEffects.has("default")) { LLSD & defaultEffect = (mAllEffects["default"] = LLSD::emptyMap()); defaultEffect["enable_night_vision"] = LLSD::Boolean(false); defaultEffect["enable_bloom"] = LLSD::Boolean(false); defaultEffect["enable_color_filter"] = LLSD::Boolean(false); /// NVG Defaults defaultEffect["brightness_multiplier"] = 3.0; defaultEffect["noise_size"] = 25.0; defaultEffect["noise_strength"] = 0.4; // TODO BTest potentially add this to tweaks? noiseTextureScale = 1.0f; /// Bloom Defaults defaultEffect["extract_low"] = 0.95; defaultEffect["extract_high"] = 1.0; defaultEffect["bloom_width"] = 2.25; defaultEffect["bloom_strength"] = 1.5; /// Color Filter Defaults defaultEffect["brightness"] = 1.0; defaultEffect["contrast"] = 1.0; defaultEffect["saturation"] = 1.0; LLSD& contrastBase = (defaultEffect["contrast_base"] = LLSD::emptyArray()); contrastBase.append(1.0); contrastBase.append(1.0); contrastBase.append(1.0); contrastBase.append(0.5); } setSelectedEffect("default"); */ } LLPostProcess::~LLPostProcess(void) { invalidate() ; } // static void LLPostProcess::initClass(void) { //this will cause system to crash at second time login //if first time login fails due to network connection --- bao //***llassert_always(gPostProcess == NULL); //replaced by the following line: if(gPostProcess) return ; gPostProcess = new LLPostProcess(); } // static void LLPostProcess::cleanupClass() { delete gPostProcess; gPostProcess = NULL; } void LLPostProcess::setSelectedEffect(std::string const & effectName) { mSelectedEffectName = effectName; static_cast<LLSD &>(tweaks) = mAllEffects[effectName]; } void LLPostProcess::saveEffect(std::string const & effectName) { /* Do nothing. Needs to be updated to use our current shader system, and to work with the move into llrender. mAllEffects[effectName] = tweaks; std::string pathName(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "windlight", XML_FILENAME)); //LL_INFOS() << "Saving PostProcess Effects settings to " << pathName << LL_ENDL; llofstream effectsXML(pathName); LLPointer<LLSDFormatter> formatter = new LLSDXMLFormatter(); formatter->format(mAllEffects, effectsXML); */ } void LLPostProcess::invalidate() { mSceneRenderTexture = NULL ; mNoiseTexture = NULL ; mTempBloomTexture = NULL ; initialized = FALSE ; } void LLPostProcess::apply(unsigned int width, unsigned int height) { if (!initialized || width != screenW || height != screenH){ initialize(width, height); } if (shadersEnabled()){ doEffects(); } } void LLPostProcess::initialize(unsigned int width, unsigned int height) { screenW = width; screenH = height; createTexture(mSceneRenderTexture, screenW, screenH); initialized = true; checkError(); createNightVisionShader(); createBloomShader(); createColorFilterShader(); checkError(); } inline bool LLPostProcess::shadersEnabled(void) { return (tweaks.useColorFilter().asBoolean() || tweaks.useNightVisionShader().asBoolean() || tweaks.useBloomShader().asBoolean() ); } void LLPostProcess::applyShaders(void) { if (tweaks.useColorFilter()){ applyColorFilterShader(); checkError(); } if (tweaks.useNightVisionShader()){ /// If any of the above shaders have been called update the frame buffer; if (tweaks.useColorFilter()) { U32 tex = mSceneRenderTexture->getTexName() ; copyFrameBuffer(tex, screenW, screenH); } applyNightVisionShader(); checkError(); } if (tweaks.useBloomShader()){ /// If any of the above shaders have been called update the frame buffer; if (tweaks.useColorFilter().asBoolean() || tweaks.useNightVisionShader().asBoolean()) { U32 tex = mSceneRenderTexture->getTexName() ; copyFrameBuffer(tex, screenW, screenH); } applyBloomShader(); checkError(); } } void LLPostProcess::applyColorFilterShader(void) { } void LLPostProcess::createColorFilterShader(void) { /// Define uniform names colorFilterUniforms[sRenderTexture] = 0; colorFilterUniforms[sBrightness] = 0; colorFilterUniforms[sContrast] = 0; colorFilterUniforms[sContrastBase] = 0; colorFilterUniforms[sSaturation] = 0; colorFilterUniforms[sLumWeights] = 0; } void LLPostProcess::applyNightVisionShader(void) { } void LLPostProcess::createNightVisionShader(void) { /// Define uniform names nightVisionUniforms[sRenderTexture] = 0; nightVisionUniforms[sNoiseTexture] = 0; nightVisionUniforms[sBrightMult] = 0; nightVisionUniforms[sNoiseStrength] = 0; nightVisionUniforms[sLumWeights] = 0; createNoiseTexture(mNoiseTexture); } void LLPostProcess::applyBloomShader(void) { } void LLPostProcess::createBloomShader(void) { createTexture(mTempBloomTexture, unsigned(screenW * 0.5), unsigned(screenH * 0.5)); /// Create Bloom Extract Shader bloomExtractUniforms[sRenderTexture] = 0; bloomExtractUniforms[sExtractLow] = 0; bloomExtractUniforms[sExtractHigh] = 0; bloomExtractUniforms[sLumWeights] = 0; /// Create Bloom Blur Shader bloomBlurUniforms[sRenderTexture] = 0; bloomBlurUniforms[sBloomStrength] = 0; bloomBlurUniforms[sTexelSize] = 0; bloomBlurUniforms[sBlurDirection] = 0; bloomBlurUniforms[sBlurWidth] = 0; } void LLPostProcess::getShaderUniforms(glslUniforms & uniforms, GLuint & prog) { /// Find uniform locations and insert into map glslUniforms::iterator i; for (i = uniforms.begin(); i != uniforms.end(); ++i){ i->second = glGetUniformLocation(prog, i->first.String().c_str()); } } void LLPostProcess::doEffects(void) { /// Save GL State glPushAttrib(GL_ALL_ATTRIB_BITS); glPushClientAttrib(GL_ALL_ATTRIB_BITS); /// Copy the screen buffer to the render texture { U32 tex = mSceneRenderTexture->getTexName() ; copyFrameBuffer(tex, screenW, screenH); } /// Clear the frame buffer. glClearColor(0.0f, 0.0f, 0.0f, 1.0f); glClear(GL_COLOR_BUFFER_BIT); /// Change to an orthogonal view viewOrthogonal(screenW, screenH); checkError(); applyShaders(); LLGLSLShader::unbind(); checkError(); /// Change to a perspective view viewPerspective(); /// Reset GL State glPopClientAttrib(); glPopAttrib(); checkError(); } void LLPostProcess::copyFrameBuffer(U32 & texture, unsigned int width, unsigned int height) { gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, texture); glCopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA, 0, 0, width, height, 0); } void LLPostProcess::drawOrthoQuad(unsigned int width, unsigned int height, QuadType type) { } void LLPostProcess::viewOrthogonal(unsigned int width, unsigned int height) { gGL.matrixMode(LLRender::MM_PROJECTION); gGL.pushMatrix(); gGL.loadIdentity(); gGL.ortho( 0.f, (GLdouble) width , (GLdouble) height , 0.f, -1.f, 1.f ); gGL.matrixMode(LLRender::MM_MODELVIEW); gGL.pushMatrix(); gGL.loadIdentity(); } void LLPostProcess::viewPerspective(void) { gGL.matrixMode(LLRender::MM_PROJECTION); gGL.popMatrix(); gGL.matrixMode(LLRender::MM_MODELVIEW); gGL.popMatrix(); } void LLPostProcess::changeOrthogonal(unsigned int width, unsigned int height) { viewPerspective(); viewOrthogonal(width, height); } void LLPostProcess::createTexture(LLPointer<LLImageGL>& texture, unsigned int width, unsigned int height) { std::vector<GLubyte> data(width * height * 4, 0) ; texture = new LLImageGL(FALSE) ; if(texture->createGLTexture()) { gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, texture->getTexName()); glTexImage2D(GL_TEXTURE_RECTANGLE, 0, 4, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &data[0]); gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_BILINEAR); gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP); } } void LLPostProcess::createNoiseTexture(LLPointer<LLImageGL>& texture) { std::vector<GLubyte> buffer(NOISE_SIZE * NOISE_SIZE); for (unsigned int i = 0; i < NOISE_SIZE; i++){ for (unsigned int k = 0; k < NOISE_SIZE; k++){ buffer[(i * NOISE_SIZE) + k] = (GLubyte)((double) rand() / ((double) RAND_MAX + 1.f) * 255.f); } } texture = new LLImageGL(FALSE) ; if(texture->createGLTexture()) { gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, texture->getTexName()); LLImageGL::setManualImage(GL_TEXTURE_2D, 0, GL_LUMINANCE, NOISE_SIZE, NOISE_SIZE, GL_LUMINANCE, GL_UNSIGNED_BYTE, &buffer[0]); gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_BILINEAR); gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP); } } bool LLPostProcess::checkError(void) { GLenum glErr; bool retCode = false; glErr = glGetError(); while (glErr != GL_NO_ERROR) { // shaderErrorLog << (const char *) gluErrorString(glErr) << std::endl; char const * err_str_raw = (const char *) gluErrorString(glErr); if(err_str_raw == NULL) { std::ostringstream err_builder; err_builder << "unknown error number " << glErr; mShaderErrorString = err_builder.str(); } else { mShaderErrorString = err_str_raw; } retCode = true; glErr = glGetError(); } return retCode; } void LLPostProcess::checkShaderError(GLuint shader) { GLint infologLength = 0; GLint charsWritten = 0; GLchar *infoLog; checkError(); // Check for OpenGL errors glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infologLength); checkError(); // Check for OpenGL errors if (infologLength > 0) { infoLog = (GLchar *)malloc(infologLength); if (infoLog == NULL) { /// Could not allocate infolog buffer return; } glGetProgramInfoLog(shader, infologLength, &charsWritten, infoLog); // shaderErrorLog << (char *) infoLog << std::endl; mShaderErrorString = (char *) infoLog; free(infoLog); } checkError(); // Check for OpenGL errors }