cdo/gpu-fractal
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Parameterise some bits for cool animations and make fullscreen

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This commit is contained in:
Camden Dixie O'Brien
2025-01-18 11:05:46 +00:00
parent 8b90943479
commit e5a730a32d
4 changed files with 163 additions and 26 deletions
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78
main.c
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@@ -5,8 +5,11 @@
#define GLFW_INCLUDE_VULKAN
#include "config.h"
#include <GLFW/glfw3.h>
#include <assert.h>
#include <complex.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
@@ -21,14 +24,22 @@
#define PRESENT_MODE_BUFFER_SIZE 8
#define SWAPCHAIN_IMG_BUFFER_SIZE 4
#define MAX_SHADER_SIZE (4 * 1024)
#define MAX_SHADER_SIZE (8 * 1024)
typedef struct {
float width, height;
#ifdef JULIA
struct {
float x, y;
} shift;
float zoom;
float re, im;
} julia;
#endif
struct {
float re, im;
} centre;
float scale;
#ifdef POWRATE
float zpow;
#endif
} params_t;
static const char *layers[] = { "VK_LAYER_KHRONOS_validation" };
@@ -62,14 +73,18 @@ int main(void)
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
GLFWwindow *window
= glfwCreateWindow(900, 900, "GPU Fractal", NULL, NULL);
GLFWmonitor *monitor = glfwGetPrimaryMonitor();
const GLFWvidmode *mode = glfwGetVideoMode(monitor);
GLFWwindow *window = glfwCreateWindow(
mode->width, mode->height, "GPU Fractal", monitor, NULL);
/* GLFWwindow *window */
/* = glfwCreateWindow(900, 900, "GPU Fractal", NULL, NULL); */
assert(window);
// Initialise Vulkan instance.
const VkApplicationInfo app_info = {
.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
.pApplicationName = "Vulkan Test",
.pApplicationName = "GPU Fractal",
.applicationVersion = VK_MAKE_VERSION(1, 0, 0),
.pEngineName = "No Engine",
.engineVersion = VK_MAKE_VERSION(1, 0, 0),
@@ -461,16 +476,41 @@ int main(void)
result = vkCreateFence(dev, &fence_config, NULL, &in_flight);
assert(result == VK_SUCCESS);
// Prepare parameters
params_t params = {
.width = (float)swapchain_extent.width,
.height = (float)swapchain_extent.height,
.shift = {
.x = -0.743643887037158704752191506114774,
.y = 0.131825904205311970493132056385139,
#ifdef JULIA
.julia = {
#ifdef JULIA_C_RE
.re = JULIA_C_RE,
#endif
#ifdef JULIA_C_IM
.im = JULIA_C_IM,
#endif
},
.zoom = 1.0,
#endif
#if defined(CENTRE_RE) || defined(CENTRE_IM)
.centre = {
#ifdef CENTRE_RE
.re = CENTRE_RE,
#endif
#ifdef CENTRE_IM
.im = CENTRE_IM,
#endif
},
#endif
.scale = 1.0,
#ifdef POWRATE
.zpow = 2.0,
#endif
};
#ifdef JULIA_DTHETA
const double dtheta = JULIA_DTHETA;
const double complex rotz = cexp(I * dtheta);
#endif
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
@@ -548,8 +588,20 @@ int main(void)
result = vkQueuePresentKHR(queue, &present_info);
assert(result == VK_SUCCESS);
// Increment zoom
params.zoom *= 0.99;
#ifdef JULIA_DTHETA
double complex julia = params.julia.re + I * params.julia.im;
julia *= rotz;
params.julia.re = (float)creal(julia);
params.julia.im = (float)cimag(julia);
#endif
#ifdef ZOOMRATE
params.scale *= (1 - ZOOMRATE);
#endif
#ifdef POWRATE
params.zpow += POWRATE;
#endif
}
vkDeviceWaitIdle(dev);