Changeset 4a9416a in opengl-game for vulkan-game.cpp

Timestamp:

Apr 26, 2020, 9:50:00 PM (4 years ago)

Author:

Dmitry Portnoy <dmitry.portnoy@…>

Branches:

feature/imgui-sdl, master

Children:

b8d4456

Parents:

52a02e6

git-author:

Dmitry Portnoy <dmitry.portnoy@…> (04/26/20 19:00:18)

git-committer:

Dmitry Portnoy <dmitry.portnoy@…> (04/26/20 21:50:00)

Message:

Create a pipeline and shaders to render explosions

File:

• vulkan-game.cpp (modified) (17 diffs)

vulkan-game.cpp

@@ -3 +3 @@
 #include <array>
 #include <iostream>
+#include <numeric>
 #include <set>
 
@@ -28 +29 @@
    this->asteroid_VP_mats = {};
    this->laser_VP_mats = {};
+   this->explosion_UBO = {};
 }
 
@@ -564 +566 @@
    laserPipeline.createDescriptorSets(swapChainImages);
 
+   explosionPipeline.addAttribute(VK_FORMAT_R32G32B32_SFLOAT, offset_of(&ExplosionVertex::particleStartVelocity));
+   explosionPipeline.addAttribute(VK_FORMAT_R32_SFLOAT, offset_of(&ExplosionVertex::particleStartTime));
+   explosionPipeline.addAttribute(VK_FORMAT_R32_UINT, offset_of(&ExplosionVertex::objIndex));
+
+   createBufferSet(sizeof(UBO_Explosion), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
+      uniformBuffers_explosionPipeline, uniformBuffersMemory_explosionPipeline, uniformBufferInfoList_explosionPipeline);
+
+   explosionPipeline.addDescriptorInfo(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
+      VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList_explosionPipeline);
+   explosionPipeline.addStorageDescriptor(VK_SHADER_STAGE_VERTEX_BIT);
+
+   explosionPipeline.createDescriptorSetLayout();
+   explosionPipeline.createPipeline("shaders/explosion-vert.spv", "shaders/explosion-frag.spv");
+   explosionPipeline.createDescriptorPool(swapChainImages);
+   explosionPipeline.createDescriptorSets(swapChainImages);
+
    cout << "Created all the graphics pipelines" << endl;
 
@@ -591 +609 @@
       VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, physicalDevice, device, renderPass,
       { 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height }, swapChainImages, 8, 18, 2);
+
+   explosionPipeline = GraphicsPipeline_Vulkan<ExplosionVertex, SSBO_Explosion>(
+      VK_PRIMITIVE_TOPOLOGY_POINT_LIST, physicalDevice, device, renderPass,
+      { 0, 0, (int)swapChainExtent.width, (int)swapChainExtent.height },
+      swapChainImages, EXPLOSION_PARTICLE_COUNT, EXPLOSION_PARTICLE_COUNT, 2);
 }
 
@@ -621 +644 @@
    laser_VP_mats.view = viewMat;
    laser_VP_mats.proj = projMat;
+
+   explosion_UBO.view = viewMat;
+   explosion_UBO.proj = projMat;
 }
 
@@ -691 +717 @@
                      vec3(-0.21f, -1.19f, 1.76f) + offset,
                      vec3(-0.21f, -1.19f, -3.0f) + offset,
-                     vec3(1.0f, 0.0f, 0.0f), 0.03f);
+                     LASER_COLOR, 0.03f);
 
                   leftLaserIdx = laserObjects.size() - 1;
@@ -700 +726 @@
                      vec3(0.21f, -1.19f, 1.76f) + offset,
                      vec3(0.21f, -1.19f, -3.0f) + offset,
-                     vec3(0.0f, 1.0f, 0.0f), 0.03f);
+                     LASER_COLOR, 0.03f);
 
                   rightLaserIdx = laserObjects.size() - 1;
@@ -818 +844 @@
          vec3 objCenter = vec3(viewMat * vec4(asteroid.center, 1.0f));
 
-         if ((objCenter.z - asteroid.radius) > -NEAR_CLIP || asteroid.ssbo.hp <= 0.0f) {
+         if (asteroid.ssbo.hp <= 0.0f) {
             asteroid.ssbo.deleted = true;
 
-            // TODO: Create explosion here
+            // TODO: Optimize this so I don't recalculate the camera rotation every time
+            // TODO: Also, avoid re-declaring cam_pitch
+            float cam_pitch = -50.0f;
+            mat4 pitch_mat = rotate(mat4(1.0f), radians(cam_pitch), vec3(1.0f, 0.0f, 0.0f));
+            mat4 model_mat = translate(mat4(1.0f), asteroid.center) * pitch_mat;
+
+            addExplosion(model_mat, 0.5f, curTime);
+
+            // TODO: Increment player's score here
+         } else if ((objCenter.z - asteroid.radius) > -NEAR_CLIP) {
+            asteroid.ssbo.deleted = true;
          } else {
             asteroid.model_transform =
@@ -914 +950 @@
    }
 
+   for (SceneObject<ExplosionVertex, SSBO_Explosion>& explosion : this->explosionObjects) {
+      if (!explosion.ssbo.deleted) {
+         if (curTime > (explosion.ssbo.explosionStartTime + explosion.ssbo.explosionDuration)) {
+            explosion.ssbo.deleted = true;
+            explosion.modified = true;
+         }
+      }
+   }
+
    for (size_t i = 0; i < shipObjects.size(); i++) {
       if (shipObjects[i].modified) {
@@ -938 +983 @@
    }
 
+   for (size_t i = 0; i < explosionObjects.size(); i++) {
+      if (explosionObjects[i].modified) {
+         updateObject(explosionObjects, explosionPipeline, i);
+      }
+   }
+
+   explosion_UBO.cur_time = curTime;
+
    VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_modelPipeline[currentImage], 0, object_VP_mats);
 
@@ -945 +998 @@
 
    VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_laserPipeline[currentImage], 0, laser_VP_mats);
+
+   VulkanUtils::copyDataToMemory(device, uniformBuffersMemory_explosionPipeline[currentImage], 0, explosion_UBO);
 }
 
@@ -1051 +1106 @@
    asteroidPipeline.cleanupBuffers();
    laserPipeline.cleanupBuffers();
+   explosionPipeline.cleanupBuffers();
 
    for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
@@ -1543 +1599 @@
       asteroidPipeline.createRenderCommands(commandBuffers[i], i);
       laserPipeline.createRenderCommands(commandBuffers[i], i);
+      explosionPipeline.createRenderCommands(commandBuffers[i], i);
 
       // Always render this pipeline last
@@ -1797 +1854 @@
 }
 
+void VulkanGame::addExplosion(mat4 model_mat, float duration, float cur_time) {
+   vector<ExplosionVertex> vertices;
+   vertices.reserve(EXPLOSION_PARTICLE_COUNT);
+
+   float particle_start_time = 0.0f;
+
+   for (int i = 0; i < EXPLOSION_PARTICLE_COUNT; i++) {
+      float randx = ((float)rand() / (float)RAND_MAX) - 0.5f;
+      float randy = ((float)rand() / (float)RAND_MAX) - 0.5f;
+
+      vertices.push_back({ vec3(randx, randy, 0.0f), particle_start_time});
+
+      particle_start_time += .01f;
+      // TODO: Get this working
+      // particle_start_time += 1.0f * EXPLOSION_PARTICLE_COUNT / duration
+   }
+
+   // Fill the indices with the the first EXPLOSION_PARTICLE_COUNT ints
+   vector<uint16_t> indices(EXPLOSION_PARTICLE_COUNT);
+   iota(indices.begin(), indices.end(), 0);
+
+   SceneObject<ExplosionVertex, SSBO_Explosion>& explosion = addObject(
+      explosionObjects, explosionPipeline,
+      addObjectIndex(explosionObjects.size(), vertices),
+      indices, {
+         mat4(1.0f),
+         cur_time,
+         duration,
+         false
+      }, true);
+
+   explosion.model_base = model_mat;
+   explosion.model_transform = mat4(1.0f);
+
+   explosion.modified = true;
+}
+
 // TODO: Fix the crash that happens when alt-tabbing
 void VulkanGame::recreateSwapChain() {
@@ -1858 +1952 @@
    laserPipeline.createDescriptorPool(swapChainImages);
    laserPipeline.createDescriptorSets(swapChainImages);
+
+   createBufferSet(sizeof(UBO_Explosion), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
+      uniformBuffers_explosionPipeline, uniformBuffersMemory_explosionPipeline, uniformBufferInfoList_explosionPipeline);
+
+   explosionPipeline.updateRenderPass(renderPass);
+   explosionPipeline.createPipeline("shaders/explosion-vert.spv", "shaders/explosion-frag.spv");
+   explosionPipeline.createDescriptorPool(swapChainImages);
+   explosionPipeline.createDescriptorSets(swapChainImages);
 
    createCommandBuffers();
@@ -1876 +1978 @@
    asteroidPipeline.cleanup();
    laserPipeline.cleanup();
+   explosionPipeline.cleanup();
 
    for (size_t i = 0; i < uniformBuffers_modelPipeline.size(); i++) {
@@ -1897 +2000 @@
    }
 
+   for (size_t i = 0; i < uniformBuffers_explosionPipeline.size(); i++) {
+      vkDestroyBuffer(device, uniformBuffers_explosionPipeline[i], nullptr);
+      vkFreeMemory(device, uniformBuffersMemory_explosionPipeline[i], nullptr);
+   }
+
    vkDestroyRenderPass(device, renderPass, nullptr);