FPSCamera::FPSCamera(CollisionWorld* world)
{
Aspect = 4.0f / 3.0f;
Fov = GLDegreesToRadians(80);
Near = 0.1f;
Far = 50.0f;
state = 0;
body = 0;
collworld = world;
isonground = false;
array_state_set(anglecurve, 0, 0, 0);
GLVec3Set(position, 0, 1.8f, 0);
GLVec3Set(targetangles, 0, 0, 0);
GLVec3Set(smoothedangles, 0, 0, 0);
GLMatrixIdentity(view);
if( world )
{
body = world->AddDynamicSphere(CAMERA_RADIUS, 80);
body->SetPosition(0, 0.1f, 0);
}
}
void Render(float alpha, float elapsedtime)
{
static float time = 0;
float lightpos[4] = { 6, 3, 10, 1 };
float eye[3] = { 0, 0, 3 };
float look[3] = { 0, 0, 0 };
float up[3] = { 0, 1, 0 };
float view[16];
float proj[16];
float world[16];
float viewproj[16];
float tmp1[16];
float tmp2[16];
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
GLMatrixLookAtRH(view, eye, look, up);
GLMatrixPerspectiveFovRH(proj, (60.0f * 3.14159f) / 180.f, (float)screenwidth / (float)screenheight, 0.1f, 100.0f);
GLMatrixMultiply(viewproj, view, proj);
//calculate world matrix
GLMatrixIdentity(tmp2);
tmp2[12] = -0.108f; // offset with bb center
tmp2[13] = -0.7875f; // offset with bb center
GLMatrixRotationAxis(tmp1, fmodf(time * 20.0f, 360.0f) * (3.14152f / 180.0f), 1, 0, 0);
GLMatrixMultiply(world, tmp2, tmp1);
GLMatrixRotationAxis(tmp2, fmodf(time * 20.0f, 360.0f) * (3.14152f / 180.0f), 0, 1, 0);
GLMatrixMultiply(world, world, tmp2);
// render
time += elapsedtime;
glUseProgram(program);
glUniform4fv(uniform_eyePos, 1, eye);
glUniform4fv(uniform_lightPos, 1, lightpos);
glUniformMatrix4fv(uniform_matWorld, 1, false, world);
glUniformMatrix4fv(uniform_matViewProj, 1, false, viewproj);
{
mesh->DrawSubset(0);
}
glUseProgram(0);
// check errors
GLenum err = glGetError();
if( err != GL_NO_ERROR )
std::cout << "Error\n";
SwapBuffers(hdc);
}
void RenderScene(OpenGLEffect* effect)
{
float world[16];
float worldinv[16];
float tmp[16];
GLMatrixIdentity(world);
for( int i = 0; i < numobjects; ++i )
{
const SceneObject& obj = objects[i];
GLMatrixScaling(tmp, obj.scale[0], obj.scale[1], obj.scale[2]);
GLMatrixRotationAxis(world, obj.angle, 0, 1, 0);
GLMatrixMultiply(world, tmp, world);
GLMatrixTranslation(tmp, obj.position[0], obj.position[1], obj.position[2]);
GLMatrixMultiply(world, world, tmp);
GLMatrixInverse(worldinv, world);
effect->SetMatrix("matWorld", world);
effect->SetMatrix("matWorldInv", worldinv);
if( obj.type == 0 )
{
float uv[] = { 2, 2, 0, 1 };
effect->SetVector("uv", uv);
effect->CommitChanges();
glBindTexture(GL_TEXTURE_2D, texture1);
box->DrawSubset(0);
}
else if( obj.type == 1 )
{
float uv[] = { 1, 1, 0, 1 };
effect->SetVector("uv", uv);
effect->CommitChanges();
glBindTexture(GL_TEXTURE_2D, texture2);
teapot->DrawSubset(0);
}
}
glBindTexture(GL_TEXTURE_2D, 0);
}
bool InitScene()
{
SetWindowText(hwnd, TITLE);
Quadron::qGLExtensions::QueryFeatures(hdc);
if( !Quadron::qGLExtensions::ARB_shader_storage_buffer_object )
return false;
#ifdef _DEBUG
if( Quadron::qGLExtensions::ARB_debug_output )
{
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
glDebugMessageCallback(ReportGLError, 0);
}
#endif
glClearColor(0.0f, 0.125f, 0.3f, 1.0f);
//glClearColor(1, 1, 1, 1);
glClearDepth(1.0);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
screenquad = new OpenGLScreenQuad();
// load objects
if( !GLCreateMeshFromQM("../media/meshes/cube.qm", &box) )
{
MYERROR("Could not load box");
return false;
}
if( !GLCreateMeshFromQM("../media/meshes/dragon.qm", &dragon) )
{
MYERROR("Could not load dragon");
return false;
}
if( !GLCreateMeshFromQM("../media/meshes/happy1.qm", &buddha) )
{
MYERROR("Could not load buddha");
return false;
}
// create texture
glGenTextures(1, &white);
glBindTexture(GL_TEXTURE_2D, white);
{
unsigned int wondercolor = 0xffffffff;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, &wondercolor);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
// create buffers
size_t headsize = 16; // start, count, pad, pad
size_t nodesize = 16; // color, depth, next, pad
size_t numlists = screenwidth * screenheight;
glGenBuffers(1, &headbuffer);
glGenBuffers(1, &nodebuffer);
glGenBuffers(1, &counterbuffer);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, headbuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, numlists * headsize, 0, GL_STATIC_DRAW);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, nodebuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, numlists * 4 * nodesize, 0, GL_STATIC_DRAW); // 120 MB @ 1080p
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, counterbuffer);
glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(GLuint), 0, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, 0);
// calculate scene bounding box
OpenGLAABox tmpbox;
float world[16];
float tmp[16];
GLMatrixIdentity(world);
for( int i = 0; i < numobjects; ++i )
{
const SceneObject& obj = objects[i];
// scaling * rotation * translation
GLMatrixScaling(tmp, obj.scale[0], obj.scale[1], obj.scale[2]);
GLMatrixRotationAxis(world, obj.angle, 0, 1, 0);
GLMatrixMultiply(world, tmp, world);
GLMatrixTranslation(tmp, obj.position[0], obj.position[1], obj.position[2]);
GLMatrixMultiply(world, world, tmp);
if( obj.type == 0 )
tmpbox = box->GetBoundingBox();
else if( obj.type == 1 )
tmpbox = dragon->GetBoundingBox();
else if( obj.type == 2 )
tmpbox = buddha->GetBoundingBox();
tmpbox.TransformAxisAligned(world);
scenebox.Add(tmpbox.Min);
scenebox.Add(tmpbox.Max);
}
// head pointer initializer
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/initheadpointers.frag", &init) )
{
MYERROR("Could not load initializer shader");
return false;
}
// renderer shader
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/renderfragments.frag", &render) )
{
MYERROR("Could not load rendering shader");
return false;
}
// fragment collector shader
if( !GLCreateEffectFromFile("../media/shadersGL/collectfragments.vert", 0, "../media/shadersGL/collectfragments.frag", &collect) )
{
MYERROR("Could not load collector shader");
return false;
}
float angles[2] = { 0.25f, -0.7f };
cameraangle = angles;
return true;
}
void Render(float alpha, float elapsedtime)
{
float world[16];
float tmp[16];
float view[16];
float proj[16];
float viewproj[16];
float eye[3] = { 0, 0.3f, 8 };
float look[3] = { 0, 0.3f, 0 };
float up[3] = { 0, 1, 0 };
float clipplanes[2];
float orient[2];
cameraangle.smooth(orient, alpha);
GLMatrixRotationAxis(view, orient[1], 1, 0, 0);
GLMatrixRotationAxis(tmp, orient[0], 0, 1, 0);
GLMatrixMultiply(view, view, tmp);
GLVec3Transform(eye, eye, view);
GLFitToBox(clipplanes[0], clipplanes[1], eye, look, scenebox);
GLMatrixPerspectiveFovRH(proj, (60.0f * 3.14159f) / 180.f, (float)screenwidth / (float)screenheight, clipplanes[0], clipplanes[1]);
GLMatrixLookAtRH(view, eye, look, up);
GLMatrixMultiply(viewproj, view, proj);
// STEP 1: initialize header pointer buffer
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glDisable(GL_DEPTH_TEST);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, headbuffer);
init->SetInt("screenWidth", screenwidth);
init->Begin();
{
screenquad->Draw();
}
init->End();
// STEP 2: collect transparent fragments into lists
glBindTexture(GL_TEXTURE_2D, white);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, counterbuffer);
GLuint* counter = (GLuint*)glMapBuffer(GL_ATOMIC_COUNTER_BUFFER, GL_WRITE_ONLY);
*counter = 0;
glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, nodebuffer);
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, counterbuffer);
collect->SetMatrix("matView", view);
collect->SetMatrix("matProj", proj);
collect->SetInt("screenWidth", screenwidth);
collect->Begin();
{
GLMatrixIdentity(world);
for( int i = 0; i < numobjects; ++i )
{
const SceneObject& obj = objects[i];
// scaling * rotation * translation
GLMatrixScaling(tmp, obj.scale[0], obj.scale[1], obj.scale[2]);
GLMatrixRotationAxis(world, obj.angle, 0, 1, 0);
GLMatrixMultiply(world, tmp, world);
GLMatrixTranslation(tmp, obj.position[0], obj.position[1], obj.position[2]);
GLMatrixMultiply(world, world, tmp);
collect->SetMatrix("matWorld", world);
collect->SetVector("matAmbient", &obj.color.r);
collect->CommitChanges();
if( obj.type == 0 )
box->DrawSubset(0);
else if( obj.type == 1 )
dragon->DrawSubset(0);
else if( obj.type == 2 )
buddha->DrawSubset(0);
}
}
collect->End();
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, 0);
// STEP 3: render
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_SRC_ALPHA);
render->SetInt("screenWidth", screenwidth);
render->Begin();
{
screenquad->Draw();
}
render->End();
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, 0);
glDisable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
#ifdef _DEBUG
// check errors
GLenum err = glGetError();
if( err != GL_NO_ERROR )
std::cout << "Error\n";
#endif
SwapBuffers(hdc);
mousedx = mousedy = 0;
}
bool InitScene()
{
SetWindowText(hwnd, TITLE);
Quadron::qGLExtensions::QueryFeatures(hdc);
hascompute = (Quadron::qGLExtensions::ARB_compute_shader && Quadron::qGLExtensions::ARB_shader_storage_buffer_object);
#ifdef _DEBUG
if( Quadron::qGLExtensions::ARB_debug_output )
{
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
glDebugMessageCallback(ReportGLError, 0);
}
#endif
glClearColor(0.0f, 0.125f, 0.3f, 1.0f);
glClearDepth(1.0);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
// load objects
if( !GLCreateMeshFromQM("../media/meshes/teapot.qm", &teapot) )
{
MYERROR("Could not load teapot");
return false;
}
if( !GLCreateMeshFromQM("../media/meshes/cube.qm", &box) )
{
MYERROR("Could not load box");
return false;
}
// calculate scene bounding box
OpenGLAABox tmpbox;
float world[16];
float tmp[16];
GLMatrixIdentity(world);
for( int i = 0; i < numobjects; ++i )
{
const SceneObject& obj = objects[i];
// scaling * rotation * translation
GLMatrixScaling(tmp, obj.scale[0], obj.scale[1], obj.scale[2]);
GLMatrixRotationAxis(world, obj.angle, 0, 1, 0);
GLMatrixMultiply(world, tmp, world);
GLMatrixTranslation(tmp, obj.position[0], obj.position[1], obj.position[2]);
GLMatrixMultiply(world, world, tmp);
if( obj.type == 0 )
tmpbox = box->GetBoundingBox();
else if( obj.type == 1 )
tmpbox = teapot->GetBoundingBox();
tmpbox.TransformAxisAligned(world);
scenebox.Add(tmpbox.Min);
scenebox.Add(tmpbox.Max);
}
// create render targets
framebuffer = new OpenGLFramebuffer(screenwidth, screenheight);
framebuffer->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_A16B16G16R16F);
framebuffer->AttachTexture(GL_DEPTH_ATTACHMENT, GLFMT_D32F);
if( !framebuffer->Validate() )
return false;
shadowmap = new OpenGLFramebuffer(SHADOWMAP_SIZE, SHADOWMAP_SIZE);
shadowmap->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_G32R32F, GL_LINEAR);
shadowmap->AttachRenderbuffer(GL_DEPTH_ATTACHMENT, GLFMT_D24S8);
if( !shadowmap->Validate() )
return false;
blurredshadow = new OpenGLFramebuffer(SHADOWMAP_SIZE, SHADOWMAP_SIZE);
blurredshadow->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_G32R32F, GL_LINEAR);
if( !blurredshadow->Validate() )
return false;
screenquad = new OpenGLScreenQuad();
// textures
if( !GLCreateTextureFromFile("../media/textures/wood2.jpg", true, &texture1) )
{
MYERROR("Could not load texture");
return false;
}
if( !GLCreateTextureFromFile("../media/textures/marble2.png", true, &texture2) )
{
MYERROR("Could not load texture");
return false;
}
if( !GLCreateTextureFromFile("../media/textures/static_sky.jpg", true, &texture3, GLTEX_FLIPX) )
{
MYERROR("Could not load texture");
return false;
}
// create buffers
workgroupsx = (screenwidth + (screenwidth % 16)) / 16;
workgroupsy = (screenheight + (screenheight % 16)) / 16;
size_t numtiles = workgroupsx * workgroupsy;
size_t headsize = 16; // start, count, pad, pad
size_t nodesize = 16; // light index, next, pad, pad
if( hascompute )
{
glGenBuffers(1, &headbuffer);
glGenBuffers(1, &nodebuffer);
glGenBuffers(1, &lightbuffer);
glGenBuffers(1, &counterbuffer);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, headbuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, numtiles * headsize, 0, GL_STATIC_DRAW);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, nodebuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, numtiles * nodesize * 1024, 0, GL_STATIC_DRAW); // 4 MB
glBindBuffer(GL_SHADER_STORAGE_BUFFER, lightbuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, NUM_LIGHTS * sizeof(LightParticle), 0, GL_DYNAMIC_DRAW);
UpdateParticles(0, true);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, counterbuffer);
glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(GLuint), 0, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, 0);
}
// load effects
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/basic2D.frag", &basic2D) )
{
MYERROR("Could not load basic 2D shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/boxblur3x3.frag", &boxblur3x3) )
{
MYERROR("Could not load blur shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/gammacorrect.frag", &gammacorrect) )
{
MYERROR("Could not load gamma correction shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/shadowmap_variance.vert", 0, "../media/shadersGL/shadowmap_variance.frag", &varianceshadow) )
{
MYERROR("Could not load shadowmap shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/blinnphong_variance.vert", 0, "../media/shadersGL/blinnphong_variance.frag", &shadowedlight) )
{
MYERROR("Could not load shadowed light shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/ambient.vert", 0, "../media/shadersGL/ambient.frag", &ambient) )
{
MYERROR("Could not load ambient shader");
return false;
}
if( hascompute )
{
// light accumulation shader
if( !GLCreateEffectFromFile("../media/shadersGL/lightaccum.vert", 0, "../media/shadersGL/lightaccum.frag", &lightaccum) )
{
MYERROR("Could not load light accumulation shader");
return false;
}
// light culling shader
if( !GLCreateComputeProgramFromFile("../media/shadersGL/lightcull.comp", &lightcull) )
{
MYERROR("Could not load light culling shader");
return false;
}
lightcull->SetInt("depthSampler", 0);
lightcull->SetInt("numLights", NUM_LIGHTS);
lightaccum->SetInt("sampler0", 0);
}
float white[] = { 1, 1, 1, 1 };
shadowedlight->SetVector("matSpecular", white);
shadowedlight->SetInt("sampler0", 0);
shadowedlight->SetInt("sampler1", 1);
boxblur3x3->SetInt("sampler0", 0);
basic2D->SetInt("sampler0", 0);
gammacorrect->SetInt("sampler0", 0);
float angles[2] = { 0.25f, -0.7f };
cameraangle = angles;
return true;
}
void Render(float alpha, float elapsedtime)
{
float world[16];
float view[16];
float proj[16];
float eye[3];
basiccamera.Animate(alpha);
basiccamera.GetViewMatrix(view);
basiccamera.GetProjectionMatrix(proj);
basiccamera.GetEyePosition(eye);
GLVec4Set(uniformDTO.vsuniforms.lightPos, 6, 3, 10, 1);
GLVec4Set(uniformDTO.vsuniforms.eyePos, eye[0], eye[1], eye[2], 1);
GLMatrixMultiply(uniformDTO.vsuniforms.matViewProj, view, proj);
GLMatrixScaling(uniformDTO.vsuniforms.matWorld, OBJECT_SCALE, OBJECT_SCALE, OBJECT_SCALE);
switch( rendermethod ) {
case 1: GLVec4Set(uniformDTO.fsuniforms.color, 1, 0, 0, 1); break;
case 2: GLVec4Set(uniformDTO.fsuniforms.color, 1, 0.5f, 0, 1); break;
case 3: GLVec4Set(uniformDTO.fsuniforms.color, 1, 1, 0, 1); break;
case 4: GLVec4Set(uniformDTO.fsuniforms.color, 0, 0.75f, 0, 1); break;
case 5: GLVec4Set(uniformDTO.fsuniforms.color, 0, 1, 0, 1); break;
default:
break;
}
// render pass
OpenGLEffect* effect = ((rendermethod > 1) ? effect2 : effect1);
GLsync sync = 0;
if( rendermethod == 1 ) {
effect1->SetMatrix("matViewProj", uniformDTO.vsuniforms.matViewProj);
effect1->SetVector("lightPos", uniformDTO.vsuniforms.lightPos);
effect1->SetVector("eyePos", uniformDTO.vsuniforms.eyePos);
effect1->SetVector("color", uniformDTO.fsuniforms.color);
}
framebuffer->Set();
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
effect->Begin();
{
for( int i = 0; i < GRID_SIZE; ++i )
{
for( int j = 0; j < GRID_SIZE; ++j )
{
for( int k = 0; k < GRID_SIZE; ++k )
{
if( currentcopy >= UNIFORM_COPIES ) {
if( rendermethod == 4 || rendermethod == 2 ) {
sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
} else if( rendermethod == 5 ) {
glBindBuffer(GL_UNIFORM_BUFFER, uniformbuffer3);
glUnmapBuffer(GL_UNIFORM_BUFFER);
persistentdata = (EffectUniformBlock*)glMapBufferRange(GL_UNIFORM_BUFFER, 0, UNIFORM_COPIES * sizeof(EffectUniformBlock),
GL_MAP_WRITE_BIT|GL_MAP_INVALIDATE_BUFFER_BIT|GL_MAP_PERSISTENT_BIT|GL_MAP_COHERENT_BIT);
assert(persistentdata != 0);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
currentcopy = 0;
}
}
uniformDTO.vsuniforms.matWorld[12] = GRID_SIZE * -0.5f + i;
uniformDTO.vsuniforms.matWorld[13] = GRID_SIZE * -0.5f + j;
uniformDTO.vsuniforms.matWorld[14] = GRID_SIZE * -0.5f + k;
if( rendermethod == 1 ) {
effect1->SetMatrix("matWorld", uniformDTO.vsuniforms.matWorld);
effect1->CommitChanges();
} else {
if( rendermethod == 2 ) {
if( sync != 0 ) {
glWaitSync(sync, 0, GL_TIMEOUT_IGNORED);
glDeleteSync(sync);
sync = 0;
}
glBindBuffer(GL_UNIFORM_BUFFER, uniformbuffer1);
glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(EffectUniformBlock), &uniformDTO);
glBindBufferRange(GL_UNIFORM_BUFFER, 0, uniformbuffer1, 0, sizeof(EffectUniformBlock::VertexUniformData));
glBindBufferRange(GL_UNIFORM_BUFFER, 1, uniformbuffer1, offsetof(EffectUniformBlock, fsuniforms), sizeof(EffectUniformBlock::FragmentUniformData));
} else if( rendermethod == 3 ) {
glBindBuffer(GL_UNIFORM_BUFFER, uniformbuffer1);
void* data = glMapBufferRange(GL_UNIFORM_BUFFER, 0, sizeof(EffectUniformBlock), GL_MAP_WRITE_BIT|GL_MAP_INVALIDATE_RANGE_BIT);
{
memcpy(data, &uniformDTO, sizeof(EffectUniformBlock));
}
glUnmapBuffer(GL_UNIFORM_BUFFER);
glBindBufferRange(GL_UNIFORM_BUFFER, 0, uniformbuffer1, 0, sizeof(EffectUniformBlock::VertexUniformData));
glBindBufferRange(GL_UNIFORM_BUFFER, 1, uniformbuffer1, offsetof(EffectUniformBlock, fsuniforms), sizeof(EffectUniformBlock::FragmentUniformData));
} else if( rendermethod == 4 ) {
GLintptr baseoffset = currentcopy * sizeof(EffectUniformBlock);
GLbitfield flags = GL_MAP_WRITE_BIT|GL_MAP_INVALIDATE_RANGE_BIT|GL_MAP_UNSYNCHRONIZED_BIT;
if( sync != 0 ) {
GLenum result = 0;
GLbitfield waitflags = GL_SYNC_FLUSH_COMMANDS_BIT;
do {
result = glClientWaitSync(sync, waitflags, 500000);
waitflags = 0;
if( result == GL_WAIT_FAILED ) {
std::cout << "glClientWaitSync() failed!\n";
break;
}
} while( result == GL_TIMEOUT_EXPIRED );
glDeleteSync(sync);
sync = 0;
currentcopy = 0;
baseoffset = 0;
}
glBindBuffer(GL_UNIFORM_BUFFER, uniformbuffer2);
void* data = glMapBufferRange(GL_UNIFORM_BUFFER, baseoffset, sizeof(EffectUniformBlock), flags);
assert(data != 0);
{
memcpy(data, &uniformDTO, sizeof(EffectUniformBlock));
}
glUnmapBuffer(GL_UNIFORM_BUFFER);
glBindBufferRange(GL_UNIFORM_BUFFER, 0, uniformbuffer2, baseoffset, sizeof(EffectUniformBlock::VertexUniformData));
glBindBufferRange(GL_UNIFORM_BUFFER, 1, uniformbuffer2, baseoffset + offsetof(EffectUniformBlock, fsuniforms), sizeof(EffectUniformBlock::FragmentUniformData));
++currentcopy;
} else if( rendermethod == 5 ) {
GLintptr baseoffset = currentcopy * sizeof(EffectUniformBlock);
memcpy(persistentdata + currentcopy, &uniformDTO, sizeof(EffectUniformBlock));
glBindBufferRange(GL_UNIFORM_BUFFER, 0, uniformbuffer3, baseoffset, sizeof(EffectUniformBlock::VertexUniformData));
glBindBufferRange(GL_UNIFORM_BUFFER, 1, uniformbuffer3, baseoffset + offsetof(EffectUniformBlock, fsuniforms), sizeof(EffectUniformBlock::FragmentUniformData));
++currentcopy;
}
}
mesh->DrawSubset(0);
}
}
}
}
effect->End();
framebuffer->Unset();
// present
GLMatrixIdentity(world);
glDisable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
basic2D->SetMatrix("matTexture", world);
basic2D->Begin();
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, framebuffer->GetColorAttachment(0));
screenquad->Draw();
}
basic2D->End();
// render text
glViewport(5, screenheight - 517, 512, 512);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
float xzplane[4] = { 0, 1, 0, -0.5f };
GLMatrixReflect(world, xzplane);
basic2D->SetMatrix("matTexture", world);
basic2D->Begin();
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, text1);
screenquad->Draw();
}
basic2D->End();
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
glViewport(0, 0, screenwidth, screenheight);
// check errors
GLenum err = glGetError();
if( err != GL_NO_ERROR )
std::cout << "Error\n";
SwapBuffers(hdc);
}
bool InitScene()
{
SetWindowText(hwnd, TITLE);
Quadron::qGLExtensions::QueryFeatures();
//CalculateSphereTetrahedron(4, 0.5f);
// setup opengl
glClearColor(0, 0, 0, 1);
glClearDepth(1.0);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
// create render targets for reference
rendertargets[0] = new OpenGLFramebuffer(screenwidth, screenheight);
rendertargets[1] = new OpenGLFramebuffer(screenwidth, screenheight);
rendertargets[0]->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_A32B32G32R32F, GL_NEAREST);
rendertargets[1]->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_A32B32G32R32F, GL_NEAREST);
GL_ASSERT(rendertargets[0]->Validate());
GL_ASSERT(rendertargets[1]->Validate());
GLint value = 0;
float white[] = { 1, 1, 1, 1 };
gbuffer = new OpenGLFramebuffer(screenwidth, screenheight);
gbuffer->AttachTexture(GL_COLOR_ATTACHMENT0, GLFMT_A8B8G8R8_sRGB, GL_NEAREST); // color
gbuffer->AttachTexture(GL_COLOR_ATTACHMENT1, GLFMT_A16B16G16R16F, GL_NEAREST); // normals
gbuffer->AttachTexture(GL_COLOR_ATTACHMENT2, GLFMT_R32F, GL_NEAREST); // depth
gbuffer->AttachTexture(GL_COLOR_ATTACHMENT3, GLFMT_G16R16F, GL_NEAREST); // velocity
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, white);
gbuffer->AttachRenderbuffer(GL_DEPTH_STENCIL_ATTACHMENT, GLFMT_D24S8);
GL_ASSERT(gbuffer->Validate());
glBindFramebuffer(GL_FRAMEBUFFER, gbuffer->GetFramebuffer());
{
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING, &value);
GL_ASSERT(value == GL_SRGB);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING, &value);
GL_ASSERT(value == GL_LINEAR);
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING, &value);
GL_ASSERT(value == GL_LINEAR);
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// load shaders
if( !GLCreateEffectFromFile("../media/shadersGL/AOpathtracer.vert", 0, "../media/shadersGL/AOpathtracer.frag", &pathtracer) )
{
MYERROR("Could not load 'path tracer' shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/AOpathtracer.vert", 0, "../media/shadersGL/AOpathtracer.frag", &refgbuffereffect, "#define RENDER_GBUFFER\n") )
{
MYERROR("Could not load 'gbuffer' shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/gtao.frag", &refgtaoeffect, "#define NUM_DIRECTIONS 32\n#define NUM_STEPS 16\n") )
{
MYERROR("Could not load 'GTAO' shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/gtaocombine.frag", &combineeffect) )
{
MYERROR("Could not load 'combine' shader");
return false;
}
if( !GLCreateEffectFromFile("../media/shadersGL/basic2D.vert", 0, "../media/shadersGL/basic2D.frag", &presenteffect) )
{
MYERROR("Could not load 'basic2D' shader");
return false;
}
float id[16];
GLMatrixIdentity(id);
presenteffect->SetMatrix("matTexture", id);
refgtaoeffect->SetMatrix("matTexture", id);
combineeffect->SetInt("sampler0", 0);
combineeffect->SetInt("sampler1", 1);
refgtaoeffect->SetInt("gbufferDepth", 0);
refgtaoeffect->SetInt("gbufferNormals", 1);
refgtaoeffect->SetInt("noise", 2);
screenquad = new OpenGLScreenQuad();
// render text
GLCreateTexture(512, 512, 1, GLFMT_A8B8G8R8, &text1);
GLRenderText(
"Use the mouse to rotate camera\n\nP - Toggle path tracer\nH - Toggle help text",
text1, 512, 512);
// setup camera
orbitcamera.SetAspect((float)screenwidth / (float)screenheight);
orbitcamera.SetFov(GL_PI / 4.0f);
orbitcamera.SetPosition(0, 1.633f, 0);
orbitcamera.SetOrientation(GLDegreesToRadians(135), GLDegreesToRadians(30), 0);
orbitcamera.SetDistance(6);
orbitcamera.SetClipPlanes(0.1f, 20);
return true;
}
void Render(float alpha, float elapsedtime)
{
static float time = 0;
float world[16];
float view[16];
float proj[16];
float viewproj[16];
float viewinv[16];
float viewprojinv[16];
float eye[3];
float clip[4] = { 0, 0, 0, 0 };
orbitcamera.Animate(alpha);
orbitcamera.GetViewMatrix(view);
orbitcamera.GetProjectionMatrix(proj);
orbitcamera.GetEyePosition(eye);
clip[0] = orbitcamera.GetNearPlane();
clip[1] = orbitcamera.GetFarPlane();
GLMatrixInverse(viewinv, view);
GLMatrixMultiply(viewproj, view, proj);
GLMatrixInverse(viewprojinv, viewproj);
glViewport(0, 0, screenwidth, screenheight);
if( userefgtao ) {
// using the reference spheres with GTAO
refgbuffereffect->SetMatrix("matView", view);
refgbuffereffect->SetMatrix("matViewInv", viewinv);
refgbuffereffect->SetMatrix("matViewProjInv", viewprojinv);
refgbuffereffect->SetVector("eyePos", eye);
refgbuffereffect->SetVector("clipPlanes", clip);
RenderReferenceWithGTAO(proj, clip, eye);
} else {
// using the reference spheres with path tracing
RenderReferenceWithPathTracing(viewprojinv, eye, time);
}
if( drawtext ) {
// render text
glViewport(5, screenheight - 517, 512, 512);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
float xzplane[4] = { 0, 1, 0, -0.5f };
GLMatrixReflect(world, xzplane);
presenteffect->SetMatrix("matTexture", world);
presenteffect->Begin();
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, text1);
screenquad->Draw();
}
presenteffect->End();
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
GLMatrixIdentity(world);
presenteffect->SetMatrix("matTexture", world);
}
time += elapsedtime;
#ifdef _DEBUG
GLenum err = glGetError();
if( err != GL_NO_ERROR )
std::cout << "Error\n";
#endif
SwapBuffers(hdc);
}
//*************************************************************************************************************
void Render(float alpha, float elapsedtime)
{
OpenGLColor grcolor(0xffdddddd);
OpenGLColor cvcolor(0xff7470ff);
OpenGLColor splinecolor(0xff000000);
OpenGLColor outsidecolor(0.75f, 0.75f, 0.8f, 1);
OpenGLColor insidecolor(1, 0.66f, 0.066f, 1);
float world[16];
float view[16];
float proj[16];
float viewproj[16];
float pointsize[2] = { 10.0f / screenwidth, 10.0f / screenheight };
float grthickness[2] = { 1.5f / screenwidth, 1.5f / screenheight };
float cvthickness[2] = { 2.0f / screenwidth, 2.0f / screenheight };
float spthickness[2] = { 3.0f / screenwidth, 3.0f / screenheight };
float spviewport[] = { 0, 0, (float)screenwidth, (float)screenheight };
float eye[3] = { 5, 4, 15 };
float look[3] = { 5, 4, 5 };
float up[3] = { 0, 1, 0 };
float lightdir[4] = { 0, 1, 0, 0 };
float fwd[3];
float orient[2];
// play with ortho matrix instead of viewport (line thickness remains constant)
ConvertToSplineViewport(spviewport[0], spviewport[1]);
ConvertToSplineViewport(spviewport[2], spviewport[3]);
GLMatrixIdentity(world);
GLMatrixOrthoRH(proj, spviewport[0], spviewport[2], spviewport[1], spviewport[3], -1, 1);
glViewport(0, 0, screenwidth, screenheight);
glClearColor(1, 1, 1, 1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
renderlines->SetMatrix("matViewProj", proj);
renderlines->SetMatrix("matWorld", world);
renderlines->SetVector("color", &grcolor.r);
renderlines->SetVector("lineThickness", grthickness);
renderlines->Begin();
{
supportlines->DrawSubset(0);
renderlines->SetVector("color", &cvcolor.r);
renderlines->SetVector("lineThickness", cvthickness);
renderlines->CommitChanges();
supportlines->DrawSubset(1);
if( hascompute )
{
renderlines->SetVector("lineThickness", spthickness);
renderlines->SetVector("color", &splinecolor.r);
renderlines->CommitChanges();
curve->DrawSubset(0);
}
}
renderlines->End();
renderpoints->SetMatrix("matViewProj", proj);
renderpoints->SetMatrix("matWorld", world);
renderpoints->SetVector("color", &cvcolor.r);
renderpoints->SetVector("pointSize", pointsize);
renderpoints->Begin();
{
glBindVertexArray(supportlines->GetVertexLayout());
glDrawArrays(GL_POINTS, 44, numcontrolvertices);
}
renderpoints->End();
// render surface in a smaller viewport
if( !fullscreen )
{
glEnable(GL_SCISSOR_TEST);
glScissor(screenwidth - surfvpwidth - 10, screenheight - surfvpheight - 10, surfvpwidth, surfvpheight);
}
glClearColor(0.0f, 0.125f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glDisable(GL_SCISSOR_TEST);
glEnable(GL_DEPTH_TEST);
if( fullscreen )
glViewport(0, 0, screenwidth, screenheight);
else
glViewport(screenwidth - surfvpwidth - 10, screenheight - surfvpheight - 10, surfvpwidth, surfvpheight);
cameraangle.smooth(orient, alpha);
GLVec3Subtract(fwd, look, eye);
GLMatrixRotationYawPitchRoll(view, orient[0], orient[1], 0);
GLVec3Transform(fwd, fwd, view);
GLVec3Subtract(eye, look, fwd);
GLMatrixPerspectiveRH(proj, M_PI / 3, 4.0f / 3.0f, 0.1f, 50.0f);
GLMatrixLookAtRH(view, eye, look, up);
GLMatrixMultiply(viewproj, view, proj);
if( wireframe )
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_CULL_FACE);
if( hascompute )
{
rendersurface->SetMatrix("matViewProj", viewproj);
rendersurface->SetMatrix("matWorld", world);
rendersurface->SetMatrix("matWorldInv", world); // its id
rendersurface->SetVector("lightDir", lightdir);
rendersurface->SetVector("eyePos", eye);
rendersurface->SetVector("outsideColor", &outsidecolor.r);
rendersurface->SetVector("insideColor", &insidecolor.r);
rendersurface->SetInt("isWireMode", wireframe);
rendersurface->Begin();
{
surface->DrawSubset(0);
}
rendersurface->End();
}
glEnable(GL_CULL_FACE);
if( wireframe )
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
// render text
if( !fullscreen )
{
glViewport(3, 0, 800, 130);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
float xzplane[4] = { 0, 1, 0, -0.5f };
GLMatrixReflect(world, xzplane);
basic2D->SetMatrix("matTexture", world);
basic2D->SetInt("sampler0", 0);
basic2D->Begin();
{
glBindTexture(GL_TEXTURE_2D, text1);
screenquad->Draw();
}
basic2D->End();
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
}
#ifdef _DEBUG
// check errors
GLenum err = glGetError();
if( err != GL_NO_ERROR )
std::cout << "Error\n";
#endif
SwapBuffers(hdc);
mousedx = mousedy = 0;
}
