From 1c3ea27064257d8cf7b9f36b0388b8cf2e94ab08 Mon Sep 17 00:00:00 2001
From: Leonard Kugis <leonardkugis@gmail.com>
Date: Fri, 26 Jan 2018 01:12:49 +0100
Subject: Skeleton for OpenCL rendering, cleaned up alot, WIP and crashing

---
 src/render.c | 108 +++++++++--------------------------------------------------
 1 file changed, 15 insertions(+), 93 deletions(-)

(limited to 'src/render.c')

diff --git a/src/render.c b/src/render.c
index 55d514b..69b46e0 100644
--- a/src/render.c
+++ b/src/render.c
@@ -9,28 +9,27 @@
 #define HAVE_STRUCT_TIMESPEC
 #include <pthread.h>
 
-void render_init(Config *config, u32 (*sfunc) (long double, long double, u32))
+void init_render(Config *config)
 {
-	delta = glutGet(GLUT_ELAPSED_TIME);
-	x_min_s = -2.0;
-	x_max_s = 1.0;
-	y_min_s= -1.0;
-	y_max_s = 1.0;
-	x_min = x_min_s;
-	x_max = x_max_s;
-	y_min = y_min_s;
-	y_max = y_max_s;
-	_config = config;
-	_sfunc = sfunc;
 	s_arr = (u32 *) malloc((_config->width) * (_config->height) * sizeof(u32));
-	calculate(x_min, y_min, x_max, y_max, _sfunc, s_arr);
 	//glutInit(0, NULL);
 	glutInitWindowPosition(0, 0);
 	glutInitWindowSize(_config->width, _config->height);
 	glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
 	glutCreateWindow("Renderer");
-	glutDisplayFunc(gl_render);
-	glutIdleFunc(gl_idle);
+
+	if (_config->mode)
+	{
+		glutDisplayFunc(render_cpu);
+		glutIdleFunc(idle_cpu);
+		init_cpu(&_config->config_cpu);
+	}
+	else
+	{
+		glutDisplayFunc(render_opencl);
+		glutIdleFunc(idle_opencl);
+		init_opencl(&_config->config_opencl);
+	}
 
 	glGenTextures(1, &tex);
 	glBindTexture(GL_TEXTURE_2D, tex);
@@ -46,84 +45,7 @@ void render_init(Config *config, u32 (*sfunc) (long double, long double, u32))
 	glutMainLoop();
 }
 
-void render_show()
-{
-
-}
-
-void gl_render(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);
-
-//	glBegin(GL_TRIANGLES);
-//		glVertex3f(-0.5,-0.5,0.0);
-//		glVertex3f(0.5,0.0,0.0);
-//		glVertex3f(0.0,0.5,0.0);
-//	glEnd();
-
-	glutSwapBuffers();
-}
-
-void calculate(long double x_min, long double y_min, long double x_max, long double y_max, u32 (*sfunc) (long double, long double, u32), u32 *arr)
+void show_render()
 {
-	pthread_t thread;
-	ThreadArgs *args = (ThreadArgs *) malloc(_config->threads * sizeof(ThreadArgs));
-	for(u8 i = 0; i < _config->threads; i++)
-	{
-		args[i] = (ThreadArgs) { .tc = _config->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;
-	long double x_math, y_math;
-	u32 iterations;
-	for (u32 y = (_config->height/_args->tc)*(_args->tid); y < _config->height; y++)
-	{
-		for (u32 x = 0; x < _config->width; x++)
-		{
-			x_math = _args->x_min + ((long double) x * (_args->x_max - _args->x_min)) / _config->width;
-			y_math = _args->y_min + ((long double) (_config->height - y) * (_args->y_max - _args->y_min)) / _config->height;
-			iterations = _args->sfunc(x_math, y_math, _config->iterations);
-			_args->arr[COORDS(x, y, _config->width)] = (((1<<24)-1)*iterations)/_config->iterations;
-		}
-	}
-}
 
-long double zoom_func(long double ft, long double s)
-{
-	return (s - expl(-ft));
-}
-
-void gl_idle(void)
-{
-	calculate(x_min, y_min, x_max, y_max, _sfunc, s_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->width, _config->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->speed*dt);
-	x_min = x_min_s + zoom_func(ft, (long double)2.0 + _config->to_x);
-	y_min = y_min_s + zoom_func(ft, (long double)1.0 + _config->to_y);
-	x_max = x_max_s - zoom_func(ft, (long double)1.0 - _config->to_x);
-	y_max = y_max_s - zoom_func(ft, (long double)1.0 - _config->to_y);
-	glutPostRedisplay();
 }
-- 
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