mitchellhansen/voxel-raycaster
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Continuing on adding argument handling.

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Added a small sample texture and sprite which can be handed over to either gl or cl and then handed back. It can then be rendered.
Changed to just an array of floats for the view matrix
This commit is contained in:
mitchellhansen
2016-08-31 21:47:56 -07:00
parent 11146a6551
commit a7234675cb
4 changed files with 180 additions and 150 deletions
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314
src/main.cpp
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@@ -15,6 +15,7 @@
#include <windows.h>
#elif defined TARGET_OS_MAC
#include <OpenGL/gl.h>
# include <OpenGL/OpenGL.h>
# include <OpenCL/opencl.h>
#include <OpenCL/cl_gl_ext.h>
@@ -33,111 +34,6 @@ const int WINDOW_Y = 150;
int main(){
CL_Wrapper c;
c.acquire_platform_and_device();
c.create_shared_context();
c.create_command_queue();
c.compile_kernel("../kernels/kernel.c", true, "hello");
c.compile_kernel("../kernels/minimal_kernel.c", true, "min_kern");
std::string in = "hello!!!!!!!!!!!!!!!!!!!!!";
cl_mem buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR,
sizeof(char) * 128, &in[0], NULL
);
char map[100 * 100 * 100];
for (int i = 0; i < 100*100*100; i++){
map[i] = '+';
}
map[0] = 'a';
cl_mem map_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(char) * 100*100*100, map, NULL
);
int dim[3] = {101, 100, 99};
cl_mem dim_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(int) * 3, dim, NULL
);
int res[2] = {100, 99};
cl_mem res_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(int) * 2, res, NULL
);
double y_increment_radians = DegreesToRadians(50.0 / res[1]);
double x_increment_radians = DegreesToRadians(80.0 / res[0]);
// SFML 2.4 has Vector4 datatypes.......
sf::Vector3f* view_plane_vectors = new sf::Vector3f[res[0] * res[1]];
for (int y = -res[1] / 2 ; y < res[1] / 2; y++) {
for (int x = -res[0] / 2; x < res[0] / 2; x++) {
// The base ray direction to slew from
sf::Vector3f ray(1, 0, 0);
// Y axis, pitch
ray = sf::Vector3f(
ray.z * sin(y_increment_radians * y) + ray.x * cos(y_increment_radians * y),
ray.y,
ray.z * cos(y_increment_radians * y) - ray.x * sin(y_increment_radians * y)
);
// Z axis, yaw
ray = sf::Vector3f(
ray.x * cos(x_increment_radians * x) - ray.y * sin(x_increment_radians * x),
ray.x * sin(x_increment_radians * x) + ray.y * cos(x_increment_radians * x),
ray.z
);
int index = (x + res[0] / 2) + res[0] * (y + res[1] / 2);
view_plane_vectors[index] = Normalize(ray);
}
}
int ind = 1;
std::cout << "\nX: " << view_plane_vectors[ind].x
<< "\nY: " << view_plane_vectors[ind].y
<< "\nZ: " << view_plane_vectors[ind].z;
std::cout << "\n======================" << std::endl;
cl_mem view_matrix_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(float) * 3 * res[0] * res[1], &view_plane_vectors[0], NULL
);
c.store_buffer(buff, "buffer_1");
c.store_buffer(map_buff, "map_buffer");
c.store_buffer(dim_buff, "dim_buffer");
c.store_buffer(res_buff, "res_buffer");
c.store_buffer(view_matrix_buff, "view_matrix_buffer");
c.set_kernel_arg("min_kern", 0, "buffer_1");
c.set_kernel_arg("min_kern", 1, "map_buffer");
c.set_kernel_arg("min_kern", 2, "dim_buffer");
c.set_kernel_arg("min_kern", 3, "res_buffer");
c.set_kernel_arg("min_kern", 4, "view_matrix_buffer");
c.run_kernel("min_kern");
};
float elap_time(){
@@ -161,14 +57,172 @@ sf::Texture window_texture;
// Y: 1.57 is straight down
int main0() {
int main() {
// Initialize the render window
Curses curse(sf::Vector2i(5, 5), sf::Vector2i(WINDOW_X, WINDOW_Y));
sf::RenderWindow window(sf::VideoMode(WINDOW_X, WINDOW_Y), "SFML");
sf::Sprite s;
sf::Texture t;
{
CL_Wrapper c;
c.acquire_platform_and_device();
c.create_shared_context();
c.create_command_queue();
c.compile_kernel("../kernels/kernel.c", true, "hello");
c.compile_kernel("../kernels/minimal_kernel.c", true, "min_kern");
std::string in = "hello!!!!!!!!!!!!!!!!!!!!!";
cl_mem buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR,
sizeof(char) * 128, &in[0], NULL
);
char map[100 * 100 * 100];
for (int i = 0; i < 100 * 100 * 100; i++) {
map[i] = '+';
}
map[0] = 'a';
cl_mem map_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(char) * 100 * 100 * 100, map, NULL
);
int dim[3] = {101, 100, 99};
cl_mem dim_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(int) * 3, dim, NULL
);
int res[2] = {100, 99};
cl_mem res_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(int) * 2, res, NULL
);
double y_increment_radians = DegreesToRadians(50.0 / res[1]);
double x_increment_radians = DegreesToRadians(80.0 / res[0]);
// SFML 2.4 has Vector4 datatypes.......
float view_matrix[res[0] * res[1] * 4];
for (int y = -res[1] / 2; y < res[1] / 2; y++) {
for (int x = -res[0] / 2; x < res[0] / 2; x++) {
// The base ray direction to slew from
sf::Vector3f ray(1, 0, 0);
// Y axis, pitch
ray = sf::Vector3f(
ray.z * sin(y_increment_radians * y) + ray.x * cos(y_increment_radians * y),
ray.y,
ray.z * cos(y_increment_radians * y) - ray.x * sin(y_increment_radians * y)
);
// Z axis, yaw
ray = sf::Vector3f(
ray.x * cos(x_increment_radians * x) - ray.y * sin(x_increment_radians * x),
ray.x * sin(x_increment_radians * x) + ray.y * cos(x_increment_radians * x),
ray.z
);
int index = (x + res[0] / 2) + res[0] * (y + res[1] / 2);
ray = Normalize(ray);
view_matrix[index * 4 + 0] = ray.x;
view_matrix[index * 4 + 1] = ray.y;
view_matrix[index * 4 + 2] = ray.z;
view_matrix[index * 4 + 3] = 0;
}
}
// int ind = 4;
// std::cout << "\nX: " << view_matrix[ind]
// << "\nY: " << view_matrix[ind + 1]
// << "\nZ: " << view_matrix[ind + 2]
// << "\npad: " << view_matrix[ind + 3];
//
// std::cout << "\n======================" << std::endl;
cl_mem view_matrix_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(float) * 3 * res[0] * res[1], view_matrix, NULL
);
float cam_dir[4] = {1, 0, 0, 0};
cl_mem cam_dir_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(float) * 4, cam_dir, NULL
);
float cam_pos[4] = {25, 25, 25, 0};
cl_mem cam_pos_buff = clCreateBuffer(
c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
sizeof(float) * 4, cam_pos, NULL
);
c.store_buffer(buff, "buffer_1");
c.store_buffer(map_buff, "map_buffer");
c.store_buffer(dim_buff, "dim_buffer");
c.store_buffer(res_buff, "res_buffer");
c.store_buffer(view_matrix_buff, "view_matrix_buffer");
c.store_buffer(cam_dir_buff, "cam_dir_buffer");
c.store_buffer(cam_pos_buff, "cam_pos_buffer");
c.set_kernel_arg("min_kern", 0, "buffer_1");
c.set_kernel_arg("min_kern", 1, "map_buffer");
c.set_kernel_arg("min_kern", 2, "dim_buffer");
c.set_kernel_arg("min_kern", 3, "res_buffer");
c.set_kernel_arg("min_kern", 4, "view_matrix_buffer");
c.set_kernel_arg("min_kern", 5, "cam_dir_buffer");
c.set_kernel_arg("min_kern", 6, "cam_pos_buffer");
c.run_kernel("min_kern");
unsigned char* pixel_array = new sf::Uint8[WINDOW_X * WINDOW_Y * 4];
for (int i = 0; i < 100 * 100 * 4; i += 4) {
pixel_array[i] = i % 255; // R?
pixel_array[i + 1] = 70; // G?
pixel_array[i + 2] = 100; // B?
pixel_array[i + 3] = 100; // A?
}
t.create(100, 100);
t.update(pixel_array);
int error;
cl_mem image_buff = clCreateFromGLTexture(c.getContext(), CL_MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, t.getNativeHandle(), &error);
if (c.assert(error, "clCreateFromGLTexture"))
return -1;
error = clEnqueueAcquireGLObjects(c.getCommandQueue(), 1, &image_buff, 0, 0, 0);
if (c.assert(error, "clEnqueueAcquireGLObjects"))
return -1;
//c.run_kernel("min_kern");
error = clEnqueueReleaseGLObjects(c.getCommandQueue(), 1, &image_buff, 0, NULL, NULL);
if (c.assert(error, "clEnqueueReleaseGLObjects"))
return -1;
s.setTexture(t);
}
// The step size in milliseconds between calls to Update()
// Lets set it to 16.6 milliseonds (60FPS)
float step_size = 0.0166f;
@@ -183,7 +237,7 @@ int main0() {
fps_counter fps;
// ============================= RAYCASTER SETUP ==================================
// Setup the sprite and texture
window_texture.create(WINDOW_X, WINDOW_Y);
window_sprite.setPosition(0, 0);
@@ -264,21 +318,6 @@ int main0() {
cam_pos.y += cam_vec.y / 1.0;
cam_pos.z += cam_vec.z / 1.0;
// if (cam_vec.x > 0.0f)
// cam_vec.x -= 0.1;
// else if (cam_vec.x < 0.0f)
// cam_vec.x += 0.1;
//
// if (cam_vec.y > 0.0f)
// cam_vec.y -= 0.1;
// else if (cam_vec.y < 0.0f)
// cam_vec.y += 0.1;
//
// if (cam_vec.z > 0.0f)
// cam_vec.z -= 0.1;
// else if (cam_vec.z < 0.0f)
// cam_vec.z += 0.1;
std::cout << cam_vec.x << " : " << cam_vec.y << " : " << cam_vec.z << std::endl;
@@ -292,31 +331,17 @@ int main0() {
while ((accumulator_time - step_size) >= step_size) {
accumulator_time -= step_size;
// Update cycle
curse.Update(delta_time);
}
// Fps cycle
// map->moveLight(sf::Vector2f(0.3, 0));
window.clear(sf::Color::Black);
// Cast the rays and get the image
sf::Color* pixel_colors = ray_caster.CastRays(cam_dir, cam_pos);
for (int i = 0; i < WINDOW_X * WINDOW_Y; i++) {
Curses::Tile t(sf::Vector2i(i % WINDOW_X, i / WINDOW_X));
Curses::Slot s(L'\u0045', pixel_colors[i], sf::Color::Black);
t.push_back(s);
curse.setTile(t);
}
// Cast it to an array of Uint8's
auto out = (sf::Uint8*)pixel_colors;
@@ -324,18 +349,15 @@ int main0() {
window_sprite.setTexture(window_texture);
window.draw(window_sprite);
curse.Render();
// Give the frame counter the frame time and draw the average frame time
fps.frame(delta_time);
fps.draw(&window);
window.draw(s);
window.display();
}
return 0;
}