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Add configurable camera aperture/focus

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This commit is contained in:
Joshua Goins 2018-11-05 21:06:12 -05:00
parent 42bbae3da8
commit 6d2fd5caaa
7 changed files with 20 additions and 27 deletions
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2
include/camera.h
View file

@ -5,4 +5,6 @@
class Camera {
public:
glm::vec3 position = glm::vec3(0), target = glm::vec3(0);
float focusDistance = 0.0f;
float aperture = 0.0f;
};

3
include/dofpass.h
View file

@ -4,13 +4,14 @@
class Renderer;
struct RenderTarget;
class Camera;
class DoFPass {
public:
DoFPass(Renderer& renderer);
~DoFPass();
void render(VkCommandBuffer commandBuffer, RenderTarget* target);
void render(VkCommandBuffer commandBuffer, Camera& camera, RenderTarget* target);
void createDescriptorSet(RenderTarget* target);

5
shaders/gfield.frag
View file

@ -20,12 +20,7 @@ void main() {
outColor = texture(sceneSampler, vec2(inPos.x / res.x, inPos.y / res.y)) * texture(bokehSampler, inUV);
outColor.a = (cocRadius / 9000.0);
if(pushConstants.dpack[0] == 0) {
if(texture(depthSampler, gl_FragCoord.xy / res).r < pushConstants.dpack[1])
discard;
} else {
if(texture(depthSampler, gl_FragCoord.xy / res).r > pushConstants.dpack[1])
discard;
}
}

8
shaders/gfield.vert
View file

@ -19,14 +19,8 @@ void main() {
const float depth = texture(depthSampler, vec2(loc.x / res.x, loc.y / res.y)).r;
float size = 0.0;
// dpack[0] is the field we are drawing (far = 0, near = 1)
if(pushConstants.dpack[0] == 0) {
if(depth > pushConstants.dpack[1])
size = (depth - pushConstants.dpack[1]) * 500.0;
} else {
if(depth < pushConstants.dpack[1])
size = (pushConstants.dpack[1] - depth) * 500.0;
}
size = (depth - pushConstants.dpack[1]) * 500.0 * pushConstants.dpack[0];
cocRadius = size;

11
src/dofpass.cpp
View file

@ -5,6 +5,7 @@
#include <stb_image.h>
#include "renderer.h"
#include "camera.h"
DoFPass::DoFPass(Renderer& renderer) : renderer_(renderer) {
createRenderPass();
@ -27,7 +28,7 @@ DoFPass::~DoFPass() {
vkDestroyRenderPass(renderer_.getDevice(), renderPass_, nullptr);
}
void DoFPass::render(VkCommandBuffer commandBuffer, RenderTarget* target) {
void DoFPass::render(VkCommandBuffer commandBuffer, Camera& camera, RenderTarget* target) {
VkViewport viewport = {};
viewport.width = target->extent.width / 2;
viewport.height = target->extent.height / 2;
@ -56,8 +57,8 @@ void DoFPass::render(VkCommandBuffer commandBuffer, RenderTarget* target) {
vkCmdBeginRenderPass(commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
glm::vec4 dpack;
dpack[0] = 0;
dpack[1] = 0.9581;
dpack[0] = camera.aperture;
dpack[1] = (100 - camera.focusDistance) / 100.0f;
dpack[2] = target->extent.width / 2;
dpack[3] = target->extent.height / 2;
@ -66,6 +67,7 @@ void DoFPass::render(VkCommandBuffer commandBuffer, RenderTarget* target) {
vkCmdPushConstants(commandBuffer, pipelineLayout_, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(glm::vec4), &dpack);
if(camera.aperture > 0.0f)
vkCmdDraw(commandBuffer, 3, (target->extent.width / 2) * (target->extent.height / 2), 0, 0);
vkCmdEndRenderPass(commandBuffer);
@ -78,9 +80,6 @@ void DoFPass::render(VkCommandBuffer commandBuffer, RenderTarget* target) {
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_);
vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout_, 0, 1, &target->dofSets[target->currentImage], 0, nullptr);
dpack[0] = 1;
dpack[1] = 0.9581;
vkCmdPushConstants(commandBuffer, pipelineLayout_, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(glm::vec4), &dpack);
//FIXME: near field is bugged

4
src/main.cpp
View file

@ -350,7 +350,9 @@ int main(int argc, char* argv[]) {
if(SDL_GetWindowFlags(window) & SDL_WINDOW_INPUT_FOCUS)
io.MousePos = ImVec2(static_cast<float>(mouseX), static_cast<float>(mouseY));
ImGui::ShowDemoWindow();
ImGui::DragFloat("Aperture", &camera.aperture, 0.01f, 0.0f, 1.0f);
ImGui::DragFloat("Focus Distance", &camera.focusDistance);
ImGui::Text("dpack[2] = %f", (100 - camera.focusDistance) / 100.0f);
ImGui::Render();
renderer->render(world, camera, target);

2
src/renderer.cpp
View file

@ -78,7 +78,7 @@ void Renderer::render(World& world, Camera& camera, RenderTarget* target) {
vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
worldPass_->render(commandBuffer, world, camera, target);
dofPass_->render(commandBuffer, target);
dofPass_->render(commandBuffer, camera, target);
// reset after dof pass
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);