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SimpleEngine
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Implement transform interpolation for slower TPS than FPS

This commit is contained in:
SeanOMik 2022-10-15 23:39:20 -04:00
parent 78ef93bcf5
commit 4a53c24e9c
Signed by: SeanOMik
GPG Key ID: 568F326C7EB33ACB
2 changed files with 9 additions and 13 deletions
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12
src/gfx/renderer.cpp
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@ -154,20 +154,10 @@ namespace simpleengine::gfx {
bool Renderer::render_job(const float& interpolate_alpha, const RenderingJob &job) { bool Renderer::render_job(const float& interpolate_alpha, const RenderingJob &job) {
Mesh *mesh = job.rendering_mesh; Mesh *mesh = job.rendering_mesh;
/* glm::mat4 transform_mat = job.transform_mat * interpolate_alpha + // Iterpolate between transforms
job.last_transform_mat * (1.f - interpolate_alpha); */
//glm::mat4 transform_mat = lerp(job.transform_mat, job.last_transform_mat, interpolate_alpha);
glm::mat4 transform_mat = lerp(job.last_transform_mat, job.transform_mat, interpolate_alpha); glm::mat4 transform_mat = lerp(job.last_transform_mat, job.transform_mat, interpolate_alpha);
std::cout << "Last transform: " << glm::to_string(job.last_transform_mat) << std::endl <<
"Current Transform: " << glm::to_string(job.transform_mat) << std::endl <<
"Lerp: " << glm::to_string(transform_mat) << std::endl << std::endl;
//std::cout << "Current: " << job.transform_mat[3]
shader.set_uniform_matrix_4f("u_transform_matrix", transform_mat); shader.set_uniform_matrix_4f("u_transform_matrix", transform_mat);
//shader.set_uniform_matrix_4f("u_transform_matrix", job.transform_mat);
std::optional<Material> &material = mesh->material; std::optional<Material> &material = mesh->material;

10
src/scene.cpp
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@ -6,6 +6,9 @@
#include "ecs/entity.h" #include "ecs/entity.h"
#include "gfx/renderer.h" #include "gfx/renderer.h"
#include <glm/gtx/string_cast.hpp>
#include <stdexcept>
namespace simpleengine { namespace simpleengine {
Scene::Scene(std::shared_ptr<gfx::Renderer> renderer) : renderer(renderer) { Scene::Scene(std::shared_ptr<gfx::Renderer> renderer) : renderer(renderer) {
@ -16,6 +19,11 @@ namespace simpleengine {
} }
void Scene::update(const float& delta_time) { void Scene::update(const float& delta_time) {
// Update the last transform matrix
registry.view<TransformComponent>().each([this, &delta_time](TransformComponent& transform) {
transform.last_transform_matrix = transform.transform_matrix;
});
// Rotate the model // Rotate the model
registry.view<TransformComponent, RotatingComponent>().each([this, &delta_time](TransformComponent& transform, RotatingComponent& rotating) { registry.view<TransformComponent, RotatingComponent>().each([this, &delta_time](TransformComponent& transform, RotatingComponent& rotating) {
transform.rotate(rotating.rate * delta_time, rotating.rotation_axis); transform.rotate(rotating.rate * delta_time, rotating.rotation_axis);
@ -32,7 +40,6 @@ namespace simpleengine {
} }
renderer->queue_job(gfx::RenderingJob(rendering_type, mesh, transform.last_transform_matrix, transform.transform_matrix)); renderer->queue_job(gfx::RenderingJob(rendering_type, mesh, transform.last_transform_matrix, transform.transform_matrix));
transform.last_transform_matrix = transform.transform_matrix; // Update last transform
} }
}); });
@ -43,7 +50,6 @@ namespace simpleengine {
} }
renderer->queue_job(gfx::RenderingJob(rendering_type, mesh_component.mesh, transform.last_transform_matrix, transform.transform_matrix)); renderer->queue_job(gfx::RenderingJob(rendering_type, mesh_component.mesh, transform.last_transform_matrix, transform.transform_matrix));
transform.last_transform_matrix = transform.transform_matrix; // Update last transform
}); });
renderer->render(interpolate_alpha, frame_time); renderer->render(interpolate_alpha, frame_time);