Showing the changes to interface/src/Environment.cpp (1 of 4 files). Show all
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| @@ -5,6 +5,8 @@ · 4 unmodified lines | ||
| 5 | 5 | // Created by Andrzej Kapolka on 5/6/13. |
| 6 | 6 | // Copyright (c) 2013 High Fidelity, Inc. All rights reserved. |
| 7 | 7 | |
| 8 | +#include <QByteArray> | |
| 9 | + | |
| 8 | 10 | #include "Camera.h" |
| 9 | 11 | #include "Environment.h" |
| 10 | 12 | #include "renderer/ProgramObject.h" |
| @@ -12,24 +14,8 @@ · 1 unmodified line | ||
| 12 | 14 | #include "world.h" |
| 13 | 15 | |
| 14 | 16 | void Environment::init() { |
| 15 | − _skyFromAtmosphereProgram = new ProgramObject(); | |
| 16 | − _skyFromAtmosphereProgram->attachFromSourceFile(GL_VERTEX_SHADER_ARB, "resources/shaders/SkyFromAtmosphere.vert"); | |
| 17 | − _skyFromAtmosphereProgram->attachFromSourceFile(GL_FRAGMENT_SHADER_ARB, "resources/shaders/SkyFromAtmosphere.frag"); | |
| 18 | − _skyFromAtmosphereProgram->link(); | |
| 19 | − | |
| 20 | − _cameraPosLocation = _skyFromAtmosphereProgram->getUniformLocation("v3CameraPos"); | |
| 21 | − _lightPosLocation = _skyFromAtmosphereProgram->getUniformLocation("v3LightPos"); | |
| 22 | − _invWavelengthLocation = _skyFromAtmosphereProgram->getUniformLocation("v3InvWavelength"); | |
| 23 | − _innerRadiusLocation = _skyFromAtmosphereProgram->getUniformLocation("fInnerRadius"); | |
| 24 | − _krESunLocation = _skyFromAtmosphereProgram->getUniformLocation("fKrESun"); | |
| 25 | − _kmESunLocation = _skyFromAtmosphereProgram->getUniformLocation("fKmESun"); | |
| 26 | − _kr4PiLocation = _skyFromAtmosphereProgram->getUniformLocation("fKr4PI"); | |
| 27 | − _km4PiLocation = _skyFromAtmosphereProgram->getUniformLocation("fKm4PI"); | |
| 28 | − _scaleLocation = _skyFromAtmosphereProgram->getUniformLocation("fScale"); | |
| 29 | − _scaleDepthLocation = _skyFromAtmosphereProgram->getUniformLocation("fScaleDepth"); | |
| 30 | − _scaleOverScaleDepthLocation = _skyFromAtmosphereProgram->getUniformLocation("fScaleOverScaleDepth"); | |
| 31 | − _gLocation = _skyFromAtmosphereProgram->getUniformLocation("g"); | |
| 32 | − _g2Location = _skyFromAtmosphereProgram->getUniformLocation("g2"); | |
| 17 | + _skyFromAtmosphereProgram = createSkyProgram("Atmosphere", _skyFromAtmosphereUniformLocations); | |
| 18 | + _skyFromSpaceProgram = createSkyProgram("Space", _skyFromSpaceUniformLocations); | |
| 33 | 19 | } |
| 34 | 20 | |
| 35 | 21 | void Environment::renderAtmosphere(Camera& camera) { |
| @@ -44,32 +30,48 @@ void Environment::renderAtmosphere(Camera& camera) { · 8 unmodified lines | ||
| 44 | 30 | float projection[16]; |
| 45 | 31 | glGetFloatv(GL_PROJECTION_MATRIX, projection); |
| 46 | 32 | glm::vec3 relativeCameraPos = camera.getPosition() - getAtmosphereCenter(); |
| 47 | − float near = camera.getNearClip(), far = glm::length(relativeCameraPos) + getAtmosphereOuterRadius(); | |
| 33 | + float height = glm::length(relativeCameraPos); | |
| 34 | + float near = camera.getNearClip(), far = height + getAtmosphereOuterRadius(); | |
| 48 | 35 | projection[10] = (far + near) / (near - far); |
| 49 | 36 | projection[14] = (2.0f * far * near) / (near - far); |
| 50 | 37 | glLoadMatrixf(projection); |
| 51 | 38 | |
| 39 | + // use the appropriate shader depending on whether we're inside or outside | |
| 40 | + ProgramObject* program; | |
| 41 | + int* locations; | |
| 42 | + if (height < getAtmosphereOuterRadius()) { | |
| 43 | + program = _skyFromAtmosphereProgram; | |
| 44 | + locations = _skyFromAtmosphereUniformLocations; | |
| 45 | + | |
| 46 | + } else { | |
| 47 | + program = _skyFromSpaceProgram; | |
| 48 | + locations = _skyFromSpaceUniformLocations; | |
| 49 | + } | |
| 50 | + | |
| 52 | 51 | // the constants here are from Sean O'Neil's GPU Gems entry |
| 53 | 52 | // (http://http.developer.nvidia.com/GPUGems2/gpugems2_chapter16.html), GameEngine.cpp |
| 54 | − _skyFromAtmosphereProgram->bind(); | |
| 55 | − _skyFromAtmosphereProgram->setUniform(_cameraPosLocation, relativeCameraPos); | |
| 53 | + program->bind(); | |
| 54 | + program->setUniform(locations[CAMERA_POS_LOCATION], relativeCameraPos); | |
| 56 | 55 | glm::vec3 lightDirection = glm::normalize(getSunLocation()); |
| 57 | − _skyFromAtmosphereProgram->setUniform(_lightPosLocation, lightDirection); | |
| 58 | − _skyFromAtmosphereProgram->setUniform(_invWavelengthLocation, | |
| 56 | + program->setUniform(locations[LIGHT_POS_LOCATION], lightDirection); | |
| 57 | + program->setUniform(locations[INV_WAVELENGTH_LOCATION], | |
| 59 | 58 | 1 / powf(getScatteringWavelengths().r, 4.0f), |
| 60 | 59 | 1 / powf(getScatteringWavelengths().g, 4.0f), |
| 61 | 60 | 1 / powf(getScatteringWavelengths().b, 4.0f)); |
| 62 | − _skyFromAtmosphereProgram->setUniform(_innerRadiusLocation, getAtmosphereInnerRadius()); | |
| 63 | − _skyFromAtmosphereProgram->setUniform(_krESunLocation, getRayleighScattering() * getSunBrightness()); | |
| 64 | − _skyFromAtmosphereProgram->setUniform(_kmESunLocation, getMieScattering() * getSunBrightness()); | |
| 65 | − _skyFromAtmosphereProgram->setUniform(_kr4PiLocation, getRayleighScattering() * 4.0f * PIf); | |
| 66 | − _skyFromAtmosphereProgram->setUniform(_km4PiLocation, getMieScattering() * 4.0f * PIf); | |
| 67 | − _skyFromAtmosphereProgram->setUniform(_scaleLocation, 1.0f / (getAtmosphereOuterRadius() - getAtmosphereInnerRadius())); | |
| 68 | − _skyFromAtmosphereProgram->setUniform(_scaleDepthLocation, 0.25f); | |
| 69 | − _skyFromAtmosphereProgram->setUniform(_scaleOverScaleDepthLocation, | |
| 61 | + program->setUniform(locations[CAMERA_HEIGHT2_LOCATION], height * height); | |
| 62 | + program->setUniform(locations[OUTER_RADIUS_LOCATION], getAtmosphereOuterRadius()); | |
| 63 | + program->setUniform(locations[OUTER_RADIUS2_LOCATION], getAtmosphereOuterRadius() * getAtmosphereOuterRadius()); | |
| 64 | + program->setUniform(locations[INNER_RADIUS_LOCATION], getAtmosphereInnerRadius()); | |
| 65 | + program->setUniform(locations[KR_ESUN_LOCATION], getRayleighScattering() * getSunBrightness()); | |
| 66 | + program->setUniform(locations[KM_ESUN_LOCATION], getMieScattering() * getSunBrightness()); | |
| 67 | + program->setUniform(locations[KR_4PI_LOCATION], getRayleighScattering() * 4.0f * PIf); | |
| 68 | + program->setUniform(locations[KM_4PI_LOCATION], getMieScattering() * 4.0f * PIf); | |
| 69 | + program->setUniform(locations[SCALE_LOCATION], 1.0f / (getAtmosphereOuterRadius() - getAtmosphereInnerRadius())); | |
| 70 | + program->setUniform(locations[SCALE_DEPTH_LOCATION], 0.25f); | |
| 71 | + program->setUniform(locations[SCALE_OVER_SCALE_DEPTH_LOCATION], | |
| 70 | 72 | (1.0f / (getAtmosphereOuterRadius() - getAtmosphereInnerRadius())) / 0.25f); |
| 71 | − _skyFromAtmosphereProgram->setUniform(_gLocation, -0.990f); | |
| 72 | − _skyFromAtmosphereProgram->setUniform(_g2Location, -0.990f * -0.990f); | |
| 73 | + program->setUniform(locations[G_LOCATION], -0.990f); | |
| 74 | + program->setUniform(locations[G2_LOCATION], -0.990f * -0.990f); | |
| 73 | 75 | |
| 74 | 76 | glFrontFace(GL_CW); |
| 75 | 77 | glDepthMask(GL_FALSE); |
| @@ -78,10 +80,37 @@ void Environment::renderAtmosphere(Camera& camera) { · 2 unmodified lines | ||
| 78 | 80 | glDepthMask(GL_TRUE); |
| 79 | 81 | glFrontFace(GL_CCW); |
| 80 | 82 | |
| 81 | − _skyFromAtmosphereProgram->release(); | |
| 83 | + program->release(); | |
| 82 | 84 | |
| 83 | 85 | glPopMatrix(); |
| 84 | 86 | |
| 85 | 87 | glMatrixMode(GL_MODELVIEW); |
| 86 | 88 | glPopMatrix(); |
| 87 | 89 | } |
| 90 | + | |
| 91 | +ProgramObject* Environment::createSkyProgram(const char* from, int* locations) { | |
| 92 | + ProgramObject* program = new ProgramObject(); | |
| 93 | + QByteArray prefix = QByteArray("resources/shaders/SkyFrom") + from; | |
| 94 | + program->attachFromSourceFile(GL_VERTEX_SHADER_ARB, prefix + ".vert"); | |
| 95 | + program->attachFromSourceFile(GL_FRAGMENT_SHADER_ARB, prefix + ".frag"); | |
| 96 | + program->link(); | |
| 97 | + | |
| 98 | + locations[CAMERA_POS_LOCATION] = program->getUniformLocation("v3CameraPos"); | |
| 99 | + locations[LIGHT_POS_LOCATION] = program->getUniformLocation("v3LightPos"); | |
| 100 | + locations[INV_WAVELENGTH_LOCATION] = program->getUniformLocation("v3InvWavelength"); | |
| 101 | + locations[CAMERA_HEIGHT2_LOCATION] = program->getUniformLocation("fCameraHeight2"); | |
| 102 | + locations[OUTER_RADIUS_LOCATION] = program->getUniformLocation("fOuterRadius"); | |
| 103 | + locations[OUTER_RADIUS2_LOCATION] = program->getUniformLocation("fOuterRadius2"); | |
| 104 | + locations[INNER_RADIUS_LOCATION] = program->getUniformLocation("fInnerRadius"); | |
| 105 | + locations[KR_ESUN_LOCATION] = program->getUniformLocation("fKrESun"); | |
| 106 | + locations[KM_ESUN_LOCATION] = program->getUniformLocation("fKmESun"); | |
| 107 | + locations[KR_4PI_LOCATION] = program->getUniformLocation("fKr4PI"); | |
| 108 | + locations[KM_4PI_LOCATION] = program->getUniformLocation("fKm4PI"); | |
| 109 | + locations[SCALE_LOCATION] = program->getUniformLocation("fScale"); | |
| 110 | + locations[SCALE_DEPTH_LOCATION] = program->getUniformLocation("fScaleDepth"); | |
| 111 | + locations[SCALE_OVER_SCALE_DEPTH_LOCATION] = program->getUniformLocation("fScaleOverScaleDepth"); | |
| 112 | + locations[G_LOCATION] = program->getUniformLocation("g"); | |
| 113 | + locations[G2_LOCATION] = program->getUniformLocation("g2"); | |
| 114 | + | |
| 115 | + return program; | |
| 116 | +} | |