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mandelbrot
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reverted

This commit is contained in:
Mario Hüttel 2019-09-30 22:29:42 +02:00
parent 4d26053a70
commit 49201ea8cf
2 changed files with 55 additions and 21 deletions
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5
CMakeLists.txt
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@ -10,8 +10,8 @@ pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
pkg_check_modules(CAIRO REQUIRED cairo)
find_package(OpenCL REQUIRED)
find_package(OpenGL REQUIRED)
find_package(GLUT REQUIRED)
add_subdirectory(glade)
@ -34,4 +34,3 @@ message(STATUS "OpenCL found: ${OPENCL_FOUND}")
message(STATUS "OpenCL includes: ${OPENCL_INCLUDE_DIRS}")
message(STATUS "OpenCL CXX includes: ${OPENCL_HAS_CPP_BINDINGS}")
message(STATUS "OpenCL libraries: ${OPENCL_LIBRARIES}")
message(STATUS "OpenGL libraries: ${OPENGL_gl_LIBRARIES}")

71
src/main.c
View File

@ -30,7 +30,6 @@ static const char * const orange_framgment_shader = " \
FragColor = texture(ourTexture, texCoord);\n \
}";
struct canvas_buffer {
unsigned char *mandelbrot_buffer;
unsigned int iterations;
@ -48,13 +47,13 @@ static gboolean on_main_window_close(GtkWidget *window, gpointer data)
return FALSE;
}
#define check_error(error) \
do { \
if (error != CL_SUCCESS) { \
printf("OpenCL call failed with error %d. %s:%d\n", (int)error, __func__, __LINE__); \
exit(error); \
} } while(0)
void check_error(cl_int error)
{
if (error != CL_SUCCESS) {
printf("OpenCL call failed with error %d\n", (int)error);
exit(error);
}
}
void load_kernel_from_file(char *file, char **src)
{
@ -84,6 +83,51 @@ cl_program create_program(char *src, cl_context context)
return program;
}
unsigned int *data_array = NULL;
static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data)
{
struct canvas_buffer *buff = (struct canvas_buffer *)data;
int width;
int height;
GtkStyleContext *style_context;
int x, y;
double color_scale;
style_context = gtk_widget_get_style_context(widget);
width = gtk_widget_get_allocated_width(widget);
height = gtk_widget_get_allocated_height(widget);
cairo_save(cr);
/* Drawing code start */
cairo_scale(cr, 1, -1);
cairo_translate(cr, (double)width/2.0, -(double)height/2.0);
for (x = 0; x < buff->width; x++) {
for (y = 0; y < buff->height; y++) {
cairo_rectangle(cr,
((double)x - (double)(buff->width - 1) / 2),
((double)y - (double)(buff->height - 1) / 2),
1,
1);
if (data_array[y * buff->width + x] == buff->iterations) {
cairo_set_source_rgb (cr, 0, 0, 0);
} else {
color_scale = (double)data_array[y * buff->width + x] / buff->iterations;
cairo_set_source_rgb (cr, (sqrt(1-color_scale)), (color_scale*color_scale), color_scale);
}
cairo_fill(cr);
}
}
/* Drawing code end */
cairo_restore(cr);
return FALSE;
}
static int calculate_mandelbrot(struct canvas_buffer *buff)
{
@ -189,8 +233,6 @@ static int calculate_mandelbrot(struct canvas_buffer *buff)
clEnqueueReadBuffer(queue, dat_buff, CL_TRUE, 0, data_size*3, buff->mandelbrot_buffer, 0, NULL, NULL);
printf("Calculation finished!\n");
ret = clFlush(queue);
ret = clFinish(queue);
ret = clReleaseKernel(kernel);
@ -355,14 +397,7 @@ int main(int argc, char **argv)
mandelbrot_buff.height = 3000;
mandelbrot_buff.iterations = 200;
mandelbrot_buff.mandelbrot_buffer = NULL;
//calculate_mandelbrot(&mandelbrot_buff);
gtk_gl_area_make_current(glarea);
GError *error = NULL;
g_signal_connect(glarea, "render", G_CALLBACK(render), NULL);
calculate_mandelbrot(&mandelbrot_buff);