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authorLeonard Kugis <leonardkugis@gmail.com>2018-01-26 01:12:49 +0100
committerLeonard Kugis <leonardkugis@gmail.com>2018-01-26 01:12:49 +0100
commit1c3ea27064257d8cf7b9f36b0388b8cf2e94ab08 (patch)
tree9b2d9a0dbb2940158b2fb734325cfc360efac6f4 /src/render_cpu.c
parente6c241add375353c1c80b0e3915a6505dbd5db9a (diff)
Skeleton for OpenCL rendering, cleaned up alot, WIP and crashing
Diffstat (limited to 'src/render_cpu.c')
-rw-r--r--src/render_cpu.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/render_cpu.c b/src/render_cpu.c
new file mode 100644
index 0000000..9370461
--- /dev/null
+++ b/src/render_cpu.c
@@ -0,0 +1,86 @@
+/*
+ * render.c
+ *
+ * Created on: 15.01.2018
+ * Author: Superleo1810
+ */
+
+#include "render.h"
+#define HAVE_STRUCT_TIMESPEC
+
+void init_cpu(CpuConfig *config)
+{
+ config_cpu = config;
+}
+
+void render_cpu(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glBindTexture(GL_TEXTURE_2D, tex);
+ glEnable(GL_TEXTURE_2D);
+
+ glBegin(GL_QUADS);
+ glTexCoord2i(0, 0); glVertex2i(0, 0);
+ glTexCoord2i(0, 1); glVertex2i(0, _config->height);
+ glTexCoord2i(1, 1); glVertex2i(_config->width, _config->height);
+ glTexCoord2i(1, 0); glVertex2i(_config->width, 0);
+ glEnd();
+
+ glDisable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, 0);
+ glutSwapBuffers();
+}
+
+void calculate(d64 x_min, d64 y_min, d64 x_max, d64 y_max, u32 (*sfunc) (d64, d64, u32), u32 *arr)
+{
+ pthread_t thread;
+ ThreadArgs *args = (ThreadArgs *) malloc(config_cpu->threads * sizeof(ThreadArgs));
+ for(u8 i = 0; i < config_cpu->threads; i++)
+ {
+ args[i] = (ThreadArgs) { .tc = config_cpu->threads, .tid = i, .x_min = x_min, .y_min = y_min, .x_max = x_max, .y_max = y_max, .sfunc = sfunc, .arr = arr };
+ pthread_create(&thread, NULL, calculate_t, (void *)&args[i]);
+ }
+ pthread_join(thread, NULL);
+}
+
+void calculate_t(void *args)
+{
+ ThreadArgs *_args = (ThreadArgs *)args;
+ d64 x_math, y_math;
+ u32 iterations;
+ for (u32 y = (config_cpu->height/_args->tc)*(_args->tid); y < config_cpu->height; y++)
+ {
+ for (u32 x = 0; x < _config->width; x++)
+ {
+ x_math = _args->x_min + ((d64) x * (_args->x_max - _args->x_min)) / config_cpu->width;
+ y_math = _args->y_min + ((d64) (config_cpu->height - y) * (_args->y_max - _args->y_min)) / config_cpu->height;
+ iterations = _args->sfunc(x_math, y_math, config_cpu->iterations);
+ _args->arr[COORDS(x, y, config_cpu->width)] = (((1<<24)-1)*iterations)/config_cpu->iterations;
+ }
+ }
+}
+
+long double zoom_func(d64 ft, d64 s)
+{
+ return (s - expl(-ft));
+}
+
+void idle_cpu(void)
+{
+ calculate(x_min, y_min, x_max, y_max, config_cpu->set_func, config_cpu->arr);
+ //glGenTextures(1, &tex);
+ glBindTexture(GL_TEXTURE_2D, tex);
+ //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, config_cpu->width, config_cpu->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, s_arr);
+ glBindTexture(GL_TEXTURE_2D, 0);
+ int t = glutGet(GLUT_ELAPSED_TIME);
+ dt = (t - delta) / 1000.0;
+ delta = t;
+ ft+=(config_cpu->speed*dt);
+ x_min = x_min_s + zoom_func(ft, (d64)2.0 + config_cpu->to_x);
+ y_min = y_min_s + zoom_func(ft, (d64)1.0 + config_cpu->to_y);
+ x_max = x_max_s - zoom_func(ft, (d64)1.0 - config_cpu->to_x);
+ y_max = y_max_s - zoom_func(ft, (d64)1.0 - config_cpu->to_y);
+ glutPostRedisplay();
+}