GLUSboolean update(GLUSfloat time)
{
static GLfloat totalTime = 0.0f;
static GLint previousInput = 0;
static GLint currentInput = 1;
static GLint currentOutput = 2;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_CULL_FACE);
if (!updateSphere(time))
{
return GLUS_FALSE;
}
glDisable(GL_CULL_FACE);
//
// Simulation part.
//
glUseProgram(g_computeProgram.program);
glUniform1f(g_deltaTimeLocation, time);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_IN_PREVIOUS, g_verticesBuffer[previousInput]);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_IN_CURRENT, g_verticesBuffer[currentInput]);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_OUT, g_verticesBuffer[currentOutput]);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_NORMALS_OUT, g_normalsBuffer);
// Process all vertices.
glDispatchCompute(1, 1, 1);
// Make sure, all vertices and normals are written.
glMemoryBarrier(GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_IN_PREVIOUS, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_IN_CURRENT, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_VERTICES_OUT, 0);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, BINDING_BUFFER_COMP_NORMALS_OUT, 0);
//
// Drawing part.
//
glUseProgram(g_program.program);
glBindVertexArray(g_vao);
glBindBuffer(GL_ARRAY_BUFFER, g_verticesBuffer[currentOutput]);
glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0);
glDrawElements(GL_TRIANGLES, g_numberIndicesPlane, GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
// Output is next time input etc.
previousInput = (previousInput + 1) % 3;
currentInput = (currentInput + 1) % 3;
currentOutput = (currentOutput + 1) % 3;
// Update the total passed time.
totalTime += time;
// Reset after 10 seconds.
if (totalTime >= 10.0f)
{
previousInput = 0;
currentInput = 1;
currentOutput = 2;
glBindBuffer(GL_SHADER_STORAGE_BUFFER, g_verticesBuffer[previousInput]);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, g_gridPlane.numberVertices * 4 * sizeof(GLfloat), g_gridPlane.vertices);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, g_verticesBuffer[currentInput]);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, g_gridPlane.numberVertices * 4 * sizeof(GLfloat), g_gridPlane.vertices);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
totalTime = 0.0f;
}
return GLUS_TRUE;
}
void GritObject::updateSphere (float r_)
{
updateSphere(pos, r_);
}
void DebugAttachmentSystem::onFrameUpdate(const UpdateFrame & updateFrame)
{
auto & imGuiSystem = world().systemRef<ImGuiSystem>();
if (!imGuiSystem.showView("Debug Attachments"))
{
m_visibleNode->setVisible(false);
m_obscuredNode->setVisible(false);
return;
}
m_visibleNode->setVisible(true);
m_obscuredNode->setVisible(false);
size_t currentAttachmentIndex = 0;
for (const auto & entityEntry : m_entities)
{
if (!entityEntry.active) continue;
const auto entity = world().entityById(entityEntry.id);
const auto & equipment = entity.component<Equipment>();
for (const auto & attachment : equipment.attachments())
{
auto transform = Transform3D::fromPose(attachment->worldPose());
transform.setScale(
entity.component<Transform3DComponent>().transform().scale());
updateSphere(
m_visibleNode->sphere(currentAttachmentIndex),
attachment,
transform);
updateSphere(
m_obscuredNode->sphere(currentAttachmentIndex),
attachment,
transform);
updatePose(
m_visibleNode->pose(currentAttachmentIndex),
attachment,
transform);
updatePose(
m_obscuredNode->pose(currentAttachmentIndex),
attachment,
transform);
currentAttachmentIndex++;
}
}
m_numAllocatedPrimitives =
std::max(currentAttachmentIndex, m_numAllocatedPrimitives);
for (; currentAttachmentIndex < m_numAllocatedPrimitives;
currentAttachmentIndex++)
{
m_visibleNode->pose(currentAttachmentIndex).setVisible(false);
m_obscuredNode->pose(currentAttachmentIndex).setVisible(false);
m_visibleNode->sphere(currentAttachmentIndex).setVisible(false);
m_obscuredNode->sphere(currentAttachmentIndex).setVisible(false);
}
}
void GritObject::updateSphere (const Vector3 &pos_)
{
updateSphere(pos_, r);
}