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Diffstat (limited to 'indra/llrender/llpostprocess.cpp')
| -rw-r--r-- | indra/llrender/llpostprocess.cpp | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/indra/llrender/llpostprocess.cpp b/indra/llrender/llpostprocess.cpp new file mode 100644 index 0000000000..7c14b57fff --- /dev/null +++ b/indra/llrender/llpostprocess.cpp @@ -0,0 +1,574 @@ +/** + * @file llpostprocess.cpp + * @brief LLPostProcess class implementation + * + * $LicenseInfo:firstyear=2007&license=viewergpl$ + * + * Copyright (c) 2007-2007, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlife.com/developers/opensource/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at http://secondlife.com/developers/opensource/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ + +#include "linden_common.h" + +#include "llpostprocess.h" +#include "llglslshader.h" +#include "llsdserialize.h" +#include "llrender.h" + + +LLPostProcess * gPostProcess = NULL; + + +static const unsigned int NOISE_SIZE = 512; + +/// CALCULATING LUMINANCE (Using NTSC lum weights) +/// http://en.wikipedia.org/wiki/Luma_%28video%29 +static const float LUMINANCE_R = 0.299f; +static const float LUMINANCE_G = 0.587f; +static const float LUMINANCE_B = 0.114f; + +static const char * const XML_FILENAME = "postprocesseffects.xml"; + +LLPostProcess::LLPostProcess(void) : + sceneRenderTexture(0), noiseTexture(0), + tempBloomTexture(0), + initialized(false), + mAllEffects(LLSD::emptyMap()), + screenW(1), screenH(1) +{ + /* 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_DEBUGS2("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) +{ + glDeleteTextures(1, &sceneRenderTexture); + glDeleteTextures(1, &noiseTexture); + glDeleteTextures(1, &tempBloomTexture); +} + +// 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)); + //llinfos << "Saving PostProcess Effects settings to " << pathName << llendl; + + llofstream effectsXML(pathName); + + LLPointer<LLSDFormatter> formatter = new LLSDXMLFormatter(); + + formatter->format(mAllEffects, effectsXML); + */ +} + +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(sceneRenderTexture, 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()){ + copyFrameBuffer(sceneRenderTexture, 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()){ + copyFrameBuffer(sceneRenderTexture, screenW, screenH); + } + applyBloomShader(); + checkError(); + } +} + +void LLPostProcess::applyColorFilterShader(void) +{ + /* Do nothing. Needs to be updated to use our current shader system, and to work with the move into llrender. + gPostColorFilterProgram.bind(); + + gGL.getTexUnit(0)->activate(); + glEnable(GL_TEXTURE_RECTANGLE_ARB); + + glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sceneRenderTexture); + + getShaderUniforms(colorFilterUniforms, gPostColorFilterProgram.mProgramObject); + glUniform1iARB(colorFilterUniforms["RenderTexture"], 0); + glUniform1fARB(colorFilterUniforms["brightness"], tweaks.getBrightness()); + glUniform1fARB(colorFilterUniforms["contrast"], tweaks.getContrast()); + float baseI = (tweaks.getContrastBaseR() + tweaks.getContrastBaseG() + tweaks.getContrastBaseB()) / 3.0f; + baseI = tweaks.getContrastBaseIntensity() / ((baseI < 0.001f) ? 0.001f : baseI); + float baseR = tweaks.getContrastBaseR() * baseI; + float baseG = tweaks.getContrastBaseG() * baseI; + float baseB = tweaks.getContrastBaseB() * baseI; + glUniform3fARB(colorFilterUniforms["contrastBase"], baseR, baseG, baseB); + glUniform1fARB(colorFilterUniforms["saturation"], tweaks.getSaturation()); + glUniform3fARB(colorFilterUniforms["lumWeights"], LUMINANCE_R, LUMINANCE_G, LUMINANCE_B); + + LLGLEnable blend(GL_BLEND); + gGL.setSceneBlendType(LLRender::BT_REPLACE); + LLGLDepthTest depth(GL_FALSE); + + /// Draw a screen space quad + drawOrthoQuad(screenW, screenH, QUAD_NORMAL); + gPostColorFilterProgram.unbind(); + */ +} + +void LLPostProcess::createColorFilterShader(void) +{ + /// Define uniform names + colorFilterUniforms["RenderTexture"] = 0; + colorFilterUniforms["brightness"] = 0; + colorFilterUniforms["contrast"] = 0; + colorFilterUniforms["contrastBase"] = 0; + colorFilterUniforms["saturation"] = 0; + colorFilterUniforms["lumWeights"] = 0; +} + +void LLPostProcess::applyNightVisionShader(void) +{ + /* Do nothing. Needs to be updated to use our current shader system, and to work with the move into llrender. + gPostNightVisionProgram.bind(); + + gGL.getTexUnit(0)->activate(); + glEnable(GL_TEXTURE_RECTANGLE_ARB); + + getShaderUniforms(nightVisionUniforms, gPostNightVisionProgram.mProgramObject); + glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sceneRenderTexture); + glUniform1iARB(nightVisionUniforms["RenderTexture"], 0); + + gGL.getTexUnit(1)->activate(); + glEnable(GL_TEXTURE_2D); + + glBindTexture(GL_TEXTURE_2D, noiseTexture); + glUniform1iARB(nightVisionUniforms["NoiseTexture"], 1); + + + glUniform1fARB(nightVisionUniforms["brightMult"], tweaks.getBrightMult()); + glUniform1fARB(nightVisionUniforms["noiseStrength"], tweaks.getNoiseStrength()); + noiseTextureScale = 0.01f + ((101.f - tweaks.getNoiseSize()) / 100.f); + noiseTextureScale *= (screenH / NOISE_SIZE); + + + glUniform3fARB(nightVisionUniforms["lumWeights"], LUMINANCE_R, LUMINANCE_G, LUMINANCE_B); + + LLGLEnable blend(GL_BLEND); + gGL.setSceneBlendType(LLRender::BT_REPLACE); + LLGLDepthTest depth(GL_FALSE); + + /// Draw a screen space quad + drawOrthoQuad(screenW, screenH, QUAD_NOISE); + gPostNightVisionProgram.unbind(); + gGL.getTexUnit(0)->activate(); + */ +} + +void LLPostProcess::createNightVisionShader(void) +{ + /// Define uniform names + nightVisionUniforms["RenderTexture"] = 0; + nightVisionUniforms["NoiseTexture"] = 0; + nightVisionUniforms["brightMult"] = 0; + nightVisionUniforms["noiseStrength"] = 0; + nightVisionUniforms["lumWeights"] = 0; + + createNoiseTexture(noiseTexture); +} + +void LLPostProcess::applyBloomShader(void) +{ + +} + +void LLPostProcess::createBloomShader(void) +{ + createTexture(tempBloomTexture, unsigned(screenW * 0.5), unsigned(screenH * 0.5)); + + /// Create Bloom Extract Shader + bloomExtractUniforms["RenderTexture"] = 0; + bloomExtractUniforms["extractLow"] = 0; + bloomExtractUniforms["extractHigh"] = 0; + bloomExtractUniforms["lumWeights"] = 0; + + /// Create Bloom Blur Shader + bloomBlurUniforms["RenderTexture"] = 0; + bloomBlurUniforms["bloomStrength"] = 0; + bloomBlurUniforms["texelSize"] = 0; + bloomBlurUniforms["blurDirection"] = 0; + bloomBlurUniforms["blurWidth"] = 0; +} + +void LLPostProcess::getShaderUniforms(glslUniforms & uniforms, GLhandleARB & prog) +{ + /// Find uniform locations and insert into map + std::map<const char *, GLuint>::iterator i; + for (i = uniforms.begin(); i != uniforms.end(); ++i){ + i->second = glGetUniformLocationARB(prog, i->first); + } +} + +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 + copyFrameBuffer(sceneRenderTexture, 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::bindNoShader(); + checkError(); + + /// Change to a perspective view + viewPerspective(); + + /// Reset GL State + glPopClientAttrib(); + glPopAttrib(); + checkError(); +} + +void LLPostProcess::copyFrameBuffer(GLuint & texture, unsigned int width, unsigned int height) +{ + glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture); + glCopyTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, 0, 0, width, height, 0); +} + +void LLPostProcess::drawOrthoQuad(unsigned int width, unsigned int height, QuadType type) +{ +#if 0 + float noiseX = 0.f; + float noiseY = 0.f; + float screenRatio = 1.0f; + + if (type == QUAD_NOISE){ + noiseX = ((float) rand() / (float) RAND_MAX); + noiseY = ((float) rand() / (float) RAND_MAX); + screenRatio = (float) width / (float) height; + } + + + glBegin(GL_QUADS); + if (type != QUAD_BLOOM_EXTRACT){ + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.f, (GLfloat) height); + } else { + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.f, (GLfloat) height * 2.0f); + } + if (type == QUAD_NOISE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, + noiseX, + noiseTextureScale + noiseY); + } else if (type == QUAD_BLOOM_COMBINE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.f, (GLfloat) height * 0.5f); + } + glVertex2f(0.f, (GLfloat) screenH - height); + + if (type != QUAD_BLOOM_EXTRACT){ + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.f, 0.f); + } else { + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.f, 0.f); + } + if (type == QUAD_NOISE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, + noiseX, + noiseY); + } else if (type == QUAD_BLOOM_COMBINE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.f, 0.f); + } + glVertex2f(0.f, (GLfloat) height + (screenH - height)); + + + if (type != QUAD_BLOOM_EXTRACT){ + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, (GLfloat) width, 0.f); + } else { + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, (GLfloat) width * 2.0f, 0.f); + } + if (type == QUAD_NOISE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, + screenRatio * noiseTextureScale + noiseX, + noiseY); + } else if (type == QUAD_BLOOM_COMBINE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, (GLfloat) width * 0.5f, 0.f); + } + glVertex2f((GLfloat) width, (GLfloat) height + (screenH - height)); + + + if (type != QUAD_BLOOM_EXTRACT){ + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, (GLfloat) width, (GLfloat) height); + } else { + glMultiTexCoord2fARB(GL_TEXTURE0_ARB, (GLfloat) width * 2.0f, (GLfloat) height * 2.0f); + } + if (type == QUAD_NOISE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, + screenRatio * noiseTextureScale + noiseX, + noiseTextureScale + noiseY); + } else if (type == QUAD_BLOOM_COMBINE){ + glMultiTexCoord2fARB(GL_TEXTURE1_ARB, (GLfloat) width * 0.5f, (GLfloat) height * 0.5f); + } + glVertex2f((GLfloat) width, (GLfloat) screenH - height); + glEnd(); +#endif +} + +void LLPostProcess::viewOrthogonal(unsigned int width, unsigned int height) +{ + glMatrixMode(GL_PROJECTION); + glPushMatrix(); + glLoadIdentity(); + glOrtho( 0.f, (GLdouble) width , (GLdouble) height , 0.f, -1.f, 1.f ); + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + glLoadIdentity(); +} + +void LLPostProcess::viewPerspective(void) +{ + glMatrixMode( GL_PROJECTION ); + glPopMatrix(); + glMatrixMode( GL_MODELVIEW ); + glPopMatrix(); +} + +void LLPostProcess::changeOrthogonal(unsigned int width, unsigned int height) +{ + viewPerspective(); + viewOrthogonal(width, height); +} + +void LLPostProcess::createTexture(GLuint & texture, unsigned int width, unsigned int height) +{ + if (texture != 0){ + glDeleteTextures(1, &texture); + } + + std::vector<GLubyte> data(width * height * 4, 0); + + glGenTextures(1, &texture); + glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture); + glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, width, height, 0, + GL_RGBA, GL_UNSIGNED_BYTE, &data[0]); + glTexParameteri(GL_TEXTURE_RECTANGLE_ARB,GL_TEXTURE_MIN_FILTER,GL_LINEAR); + glTexParameteri(GL_TEXTURE_RECTANGLE_ARB,GL_TEXTURE_MAG_FILTER,GL_LINEAR); + glTexParameteri(GL_TEXTURE_RECTANGLE_ARB,GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_RECTANGLE_ARB,GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); +} + +void LLPostProcess::createNoiseTexture(GLuint & texture) +{ + if (texture != 0){ + glDeleteTextures(1, &texture); + } + glGenTextures(1, &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); + } + } + glBindTexture(GL_TEXTURE_2D, texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, NOISE_SIZE, NOISE_SIZE, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, &buffer[0]); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); +} + +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(GLhandleARB shader) +{ + GLint infologLength = 0; + GLint charsWritten = 0; + GLchar *infoLog; + + checkError(); // Check for OpenGL errors + + glGetObjectParameterivARB(shader, GL_OBJECT_INFO_LOG_LENGTH_ARB, &infologLength); + + checkError(); // Check for OpenGL errors + + if (infologLength > 0) + { + infoLog = (GLchar *)malloc(infologLength); + if (infoLog == NULL) + { + /// Could not allocate infolog buffer + return; + } + glGetInfoLogARB(shader, infologLength, &charsWritten, infoLog); + // shaderErrorLog << (char *) infoLog << std::endl; + mShaderErrorString = (char *) infoLog; + free(infoLog); + } + checkError(); // Check for OpenGL errors +} |