void ElysiumEngine::saveObjToBin(const char *filename, const char *outputFile)
{
Mesh *mesh = loadMeshFromObj(filename);
FILE *output = fopen(outputFile,"wb");
fwrite(&mesh->vertexCount, sizeof(unsigned int),1,output);
fwrite(&mesh->indexCount, sizeof(unsigned int),1, output);
fwrite(mesh->vertices,sizeof(VertexData),mesh->vertexCount,output);
fwrite(mesh->indices,sizeof(unsigned int), mesh->indexCount * 3,output);
fclose(output);
}
void init()
{
setupGL();
Surface::init();
cam = new Camera();
mdl = new Model();
Mesh mesh = loadMeshFromObj("resources/meshes/dragon.obj", 0.1);
Geometry dragon = createGeometryFromMesh(mesh);
Surface *surface = new Surface();
//surface->loadDiffuseTexture("resources/meshes/textures/sponza_floor_a_spec.tga");
surfaces.insert(std::pair<std::string, Surface*> (std::string("default"), surface) );
mdl->addGeometryAndSurface(&dragon, surface);
// Geometry floor;
// Geometry::sVertex v;
// v.position = vec3(-1, 0,-1); v.texCoord = vec2(0,0); floor.addVertex(v);
// v.position = vec3( 1, 0,-1); v.texCoord = vec2(1,0); floor.addVertex(v);
// v.position = vec3( 1, 0, 1); v.texCoord = vec2(1,1); floor.addVertex(v);
// v.position = vec3(-1, 0, 1); v.texCoord = vec2(0,1); floor.addVertex(v);
// floor.addTriangle(uvec3(0,2,1));
// floor.addTriangle(uvec3(0,3,2));
// mdl->addGeometryAndSurface(&floor, surface);
model = new Geometry();
mesh = loadMeshFromObj("resources/meshes/sponza.obj", 0.01f);
*model = createGeometryFromMesh(mesh);
model->createStaticBuffers();
std::vector<Mesh> meshes = loadMeshesFromObj("resources/meshes/sponza.obj", 0.01f);
std::vector<Geometry> geometries = createGeometryFromMesh(meshes);
std::vector<Material> materials = loadMaterialsFromMtl("resources/meshes/sponza.mtl");
surfaces = createSurfaceFromMaterial(materials, "resources/meshes/");
for(unsigned int i=0; i<geometries.size(); ++i)
{
mdl->addGeometryAndSurface(&geometries[i], surfaces[geometries[i].material]);
}
mdl->prepare();
fsquad = new Geometry();
Geometry::sVertex v;
v.position = vec3(-1,-1, 0); v.texCoord = vec2(0,0); fsquad->addVertex(v);
v.position = vec3( 1,-1, 0); v.texCoord = vec2(1,0); fsquad->addVertex(v);
v.position = vec3( 1, 1, 0); v.texCoord = vec2(1,1); fsquad->addVertex(v);
v.position = vec3(-1, 1, 0); v.texCoord = vec2(0,1); fsquad->addVertex(v);
fsquad->addTriangle(uvec3(0,1,2));
fsquad->addTriangle(uvec3(0,2,3));
fsquad->createStaticBuffers();
geometryShader = new Shader("resources/shaders/geometry_vert.glsl",
"resources/shaders/geometry_frag.glsl");
geometryBackShader = new Shader("resources/shaders/geometry_vert.glsl",
"resources/shaders/geometry_back_frag.glsl");
hbaoHalfShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/hbao_frag.glsl");
hbaoFullShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/hbao_full_frag.glsl");
compositShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/composit_frag.glsl");
blurXShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/blur_x_frag.glsl");
blurYShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/blur_y_frag.glsl");
downsampleShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/downsample_depth_frag.glsl");
upsampleShader = new Shader("resources/shaders/fullscreen_vert.glsl",
"resources/shaders/upsample_aoz_frag.glsl");
// Full res deferred base
fboFullRes = new Framebuffer2D(WIDTH, HEIGHT);
fboFullRes->attachBuffer(FBO_DEPTH, GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT, GL_LINEAR, GL_LINEAR);
fboFullRes->attachBuffer(FBO_AUX0, GL_RGBA8, GL_RGBA, GL_FLOAT);
fboFullRes->attachBuffer(FBO_AUX1, GL_RG16F, GL_RG, GL_FLOAT, GL_LINEAR, GL_LINEAR);
fboFullRes->attachBuffer(FBO_AUX2, GL_RG16F, GL_RG, GL_FLOAT, GL_LINEAR, GL_LINEAR);
//fboFullRes->attachBuffer(FBO_AUX3, GL_R8, GL_RED, GL_FLOAT);
// Half res buffer for AO
fboHalfRes = new Framebuffer2D(AO_WIDTH, AO_HEIGHT);
//fboHalfRes->attachBuffer(FBO_DEPTH, GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT);
fboHalfRes->attachBuffer(FBO_AUX0, GL_R32F, GL_RED, GL_FLOAT, GL_LINEAR, GL_LINEAR);
fboHalfRes->attachBuffer(FBO_AUX1, GL_R8, GL_RED, GL_FLOAT, GL_LINEAR, GL_LINEAR);
float fovRad = cam->getFov() * 3.14159265f / 180.0f;
vec2 FocalLen, InvFocalLen, UVToViewA, UVToViewB, LinMAD;
FocalLen[0] = 1.0f / tanf(fovRad * 0.5f) * ((float)AO_HEIGHT / (float)AO_WIDTH);
FocalLen[1] = 1.0f / tanf(fovRad * 0.5f);
InvFocalLen[0] = 1.0f / FocalLen[0];
InvFocalLen[1] = 1.0f / FocalLen[1];
UVToViewA[0] = -2.0f * InvFocalLen[0];
UVToViewA[1] = -2.0f * InvFocalLen[1];
UVToViewB[0] = 1.0f * InvFocalLen[0];
UVToViewB[1] = 1.0f * InvFocalLen[1];
float near = cam->getNear(), far = cam->getFar();
LinMAD[0] = (near-far)/(2.0f*near*far);
LinMAD[1] = (near+far)/(2.0f*near*far);
hbaoHalfShader->bind();
int pos;
pos = hbaoHalfShader->getUniformLocation("FocalLen");
glUniform2f(pos, FocalLen[0], FocalLen[1]);
pos = hbaoHalfShader->getUniformLocation("UVToViewA");
glUniform2f(pos, UVToViewA[0], UVToViewA[1]);
pos = hbaoHalfShader->getUniformLocation("UVToViewB");
glUniform2f(pos, UVToViewB[0], UVToViewB[1]);
pos = hbaoHalfShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
pos = hbaoHalfShader->getUniformLocation("AORes");
glUniform2f(pos, (float)AO_WIDTH, (float)AO_HEIGHT);
pos = hbaoHalfShader->getUniformLocation("InvAORes");
glUniform2f(pos, 1.0f/(float)AO_WIDTH, 1.0f/(float)AO_HEIGHT);
pos = hbaoHalfShader->getUniformLocation("R");
glUniform1f(pos, AO_RADIUS);
pos = hbaoHalfShader->getUniformLocation("R2");
glUniform1f(pos, AO_RADIUS*AO_RADIUS);
pos = hbaoHalfShader->getUniformLocation("NegInvR2");
glUniform1f(pos, -1.0f / (AO_RADIUS*AO_RADIUS));
pos = hbaoHalfShader->getUniformLocation("MaxRadiusPixels");
glUniform1f(pos, AO_MAX_RADIUS_PIXELS / (float)RES_RATIO);
pos = hbaoHalfShader->getUniformLocation("NoiseScale");
glUniform2f(pos, (float)AO_WIDTH/(float)NOISE_RES, (float)AO_HEIGHT/(float)NOISE_RES);
pos = hbaoHalfShader->getUniformLocation("NumDirections");
glUniform1i(pos, AO_DIRS);
pos = hbaoHalfShader->getUniformLocation("NumSamples");
glUniform1i(pos, AO_SAMPLES);
hbaoFullShader->bind();
pos = hbaoFullShader->getUniformLocation("FocalLen");
glUniform2f(pos, FocalLen[0], FocalLen[1]);
pos = hbaoFullShader->getUniformLocation("UVToViewA");
glUniform2f(pos, UVToViewA[0], UVToViewA[1]);
pos = hbaoFullShader->getUniformLocation("UVToViewB");
glUniform2f(pos, UVToViewB[0], UVToViewB[1]);
pos = hbaoFullShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
pos = hbaoFullShader->getUniformLocation("AORes");
glUniform2f(pos, (float)WIDTH, (float)HEIGHT);
pos = hbaoFullShader->getUniformLocation("InvAORes");
glUniform2f(pos, 1.0f/(float)WIDTH, 1.0f/(float)HEIGHT);
pos = hbaoFullShader->getUniformLocation("R");
glUniform1f(pos, AO_RADIUS);
pos = hbaoFullShader->getUniformLocation("R2");
glUniform1f(pos, AO_RADIUS*AO_RADIUS);
pos = hbaoFullShader->getUniformLocation("NegInvR2");
glUniform1f(pos, -1.0f / (AO_RADIUS*AO_RADIUS));
pos = hbaoFullShader->getUniformLocation("MaxRadiusPixels");
glUniform1f(pos, AO_MAX_RADIUS_PIXELS);
pos = hbaoFullShader->getUniformLocation("NoiseScale");
glUniform2f(pos, (float)WIDTH/(float)NOISE_RES, (float)HEIGHT/(float)NOISE_RES);
pos = hbaoFullShader->getUniformLocation("NumDirections");
glUniform1i(pos, AO_DIRS);
pos = hbaoFullShader->getUniformLocation("NumSamples");
glUniform1i(pos, AO_SAMPLES);
blurXShader->bind();
pos = blurXShader->getUniformLocation("AORes");
glUniform2f(pos, AO_WIDTH, AO_HEIGHT);
pos = blurXShader->getUniformLocation("InvAORes");
glUniform2f(pos, 1.0f/AO_WIDTH, 1.0f/AO_HEIGHT);
pos = blurXShader->getUniformLocation("FullRes");
glUniform2f(pos, WIDTH, HEIGHT);
pos = blurXShader->getUniformLocation("InvFullRes");
glUniform2f(pos, 1.0f/WIDTH, 1.0f/HEIGHT);
pos = blurXShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
blurYShader->bind();
pos = blurYShader->getUniformLocation("AORes");
glUniform2f(pos, AO_WIDTH, AO_HEIGHT);
pos = blurYShader->getUniformLocation("InvAORes");
glUniform2f(pos, 1.0f/AO_WIDTH, 1.0f/AO_HEIGHT);
pos = blurYShader->getUniformLocation("FullRes");
glUniform2f(pos, WIDTH, HEIGHT);
pos = blurYShader->getUniformLocation("InvFullRes");
glUniform2f(pos, 1.0f/WIDTH, 1.0f/HEIGHT);
pos = blurYShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
downsampleShader->bind();
pos = downsampleShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
pos = downsampleShader->getUniformLocation("ResRatio");
glUniform1i(pos, RES_RATIO);
upsampleShader->bind();
pos = upsampleShader->getUniformLocation("LinMAD");
glUniform2f(pos, LinMAD[0], LinMAD[1]);
glGenTextures(1, &noiseTexture);
glBindTexture(GL_TEXTURE_2D, noiseTexture);
generateNoiseTexture(NOISE_RES, NOISE_RES);
}
