Reveting to an older build. Something on the mac build stopped my card from running it.

Added camera class
Added a create_buffer method
Cleaned up much of the main function
Added Vector4 class, ported from sf::Vector3
Various other edits

kernels/minimal_kernel.cl

@@ -1,15 +1,15 @@
 
 
-uint4 white_light(uint4 input, float3 light, int3 mask) {
+float4 white_light(float4 input, float3 light, int3 mask) {
 
 	input.w = input.w + acos(
 		dot(
 			normalize(light),
 			normalize(fabs(convert_float3(mask)))
 			)
-		) * 50;
+		) / 2;
 
-	return (input);
+	return input;
 
 }
 
@@ -25,24 +25,16 @@ __kernel void min_kern(
         __write_only image2d_t image
 ){
 
-    // Get the pixel position of this worker
     size_t id = get_global_id(0);
     int2 pixel = {id % resolution->x, id / resolution->x};
-
-
-    // Slew the ray into it's correct position based on the view matrix's starting position
-    // and the camera's current direction
-
     float3 ray_dir = projection_matrix[pixel.x + resolution->x * pixel.y];
 
-    // Yaw
     ray_dir = (float3)(
             ray_dir.z * sin(cam_dir->y) + ray_dir.x * cos(cam_dir->y),
             ray_dir.y,
             ray_dir.z * cos(cam_dir->y) - ray_dir.x * sin(cam_dir->y)
     );
 
-    // Pitch
     ray_dir = (float3)(
             ray_dir.x * cos(cam_dir->z) - ray_dir.y * sin(cam_dir->z),
             ray_dir.x * sin(cam_dir->z) + ray_dir.y * cos(cam_dir->z),
@@ -53,6 +45,10 @@ __kernel void min_kern(
     int3 voxel_step = {1, 1, 1};
 	voxel_step *= (ray_dir > 0) - (ray_dir < 0);
 
+    /*voxel_step.x *= (ray_dir.x > 0) - (ray_dir.x < 0);
+    voxel_step.y *= (ray_dir.y > 0) - (ray_dir.y < 0);
+    voxel_step.z *= (ray_dir.z > 0) - (ray_dir.z < 0);*/
+
     // Setup the voxel coords from the camera origin
 	int3 voxel = convert_int3(*cam_pos);
 
@@ -64,26 +60,21 @@ __kernel void min_kern(
     // for all 3 axis XYZ.
 	float3 intersection_t = delta_t;
 
-    // Create a psuedo random number for view fog
 	int2 randoms = { 3, 14 };
 	uint seed = randoms.x + id;
 	uint t = seed ^ (seed << 11);
 	uint result = randoms.y ^ (randoms.y >> 19) ^ (t ^ (t >> 8));
 
-    // Distance a ray can travel before it terminates
-	int max_dist = 200 + result % 50;
+	int max_dist = 500 + result % 50;
 	int dist = 0;
 
-    // Bitmask to keep track of which axis was tripped
 	int3 mask = { 0, 0, 0 };
 
     // Andrew Woo's raycasting algo
     do {
 
-        // Non-branching test of the lowest delta_t value
 		mask = intersection_t.xyz <= min(intersection_t.yzx, intersection_t.zxy);
-
-		// Based on the result increment the voxel and intersection
+		float3 thing = delta_t * fabs(convert_float3(mask.xyz));
 		intersection_t += delta_t * fabs(convert_float3(mask.xyz));
 		voxel.xyz += voxel_step.xyz * mask.xyz;
 
@@ -91,15 +82,12 @@ __kernel void min_kern(
 		int3 overshoot = voxel <= *map_dim;
 		int3 undershoot = voxel > 0;
 
-        // "Sky"
 		if (overshoot.x == 0 || overshoot.y == 0 || overshoot.z == 0 || undershoot.x == 0 || undershoot.y == 0){
-			write_imageui(image, pixel, (uint4)(135, 206, 235, 255));
+			write_imagef(image, pixel, (float4)(.73, .81, .89, 1.0));
 			return;
 		}
-
-		// "Water"
 		if (undershoot.z == 0) {
-			write_imageui(image, pixel, (uint4)(64, 164, 223, 255));
+			write_imagef(image, pixel, (float4)(.14, .30, .50, 1.0));
 			return;
 		}
 
@@ -110,23 +98,23 @@ __kernel void min_kern(
 		if (voxel_data != 0) {
 			switch (voxel_data) {
 			case 1:
-				write_imageui(image, pixel, (uint4)(50, 0, 0, 255));
+				write_imagef(image, pixel, (float4)(.50, .00, .00, 1));
 				return;
 			case 2:
-				write_imageui(image, pixel, (uint4)(0, 50, 40, 255));
+				write_imagef(image, pixel, (float4)(.00, .50, .40, 1.00));
 				return;
 			case 3:
-				write_imageui(image, pixel, (uint4)(0, 0, 50, 255));
+				write_imagef(image, pixel, (float4)(.00, .00, .50, 1.00));
 				return;
 			case 4:
-				write_imageui(image, pixel, (uint4)(25, 0, 25, 255));
+				write_imagef(image, pixel, (float4)(.25, .00, .25, 1.00));
 				return;
 			case 5:
-				//write_imageui(image, pixel, (uint4)(200, 200, 200, 255));
-				write_imageui(image, pixel, white_light((uint4)(44, 176, 55, 100), (float3)(lights[7], lights[8], lights[9]), mask));
+				//write_imagef(image, pixel, (float4)(.25, .00, .25, 1.00));
+				write_imagef(image, pixel, white_light((float4)(.25, .32, .14, 0.2), (float3)(lights[7], lights[8], lights[9]), mask));
 				return;
 			case 6:
-				write_imageui(image, pixel, (uint4)(30, 80, 10, 255));
+				write_imagef(image, pixel, (float4)(.30, .80, .10, 1.00));
 				return;
 			}
 		}
@@ -134,6 +122,6 @@ __kernel void min_kern(
         dist++;
     } while (dist < max_dist);
 
-    write_imageui(image, pixel, (uint4)(135, 206, 235, 255));
+    write_imagef(image, pixel, (float4)(.73, .81, .89, 1.0));
     return;
 }

src/CL_Wrapper.cpp

@@ -59,9 +59,8 @@ int CL_Wrapper::acquire_platform_and_device(){
     // falling back to the cpu with the fastest clock if we weren't able to find one
 
     device current_best_device;
-	current_best_device.type = 0; // Set this to -1 so the first run always selects a new device
-    current_best_device.clock_frequency = 0;
-    current_best_device.comp_units = 0;
+	current_best_device.type = -1; // Set this to -1 so the first run always selects a new device
+
 
     for (auto kvp: plt_ids){
 
@@ -87,7 +86,7 @@ int CL_Wrapper::acquire_platform_and_device(){
     platform_id = current_best_device.platform;
     device_id = current_best_device.id;
 
-    return 1;
+    return 0;
 };
 
 int CL_Wrapper::create_shared_context() {
@@ -241,7 +240,7 @@ int CL_Wrapper::store_buffer(cl_mem buffer, std::string buffer_name){
 
 int CL_Wrapper::run_kernel(std::string kernel_name, const int work_size){
 
-    const int WORKER_SIZE = 1;
+    const int WORKER_SIZE = 10;
     size_t global_work_size[1] = { static_cast<size_t>(work_size) };
 
     cl_kernel kernel = kernel_map.at(kernel_name);

src/TestPlatform.cpp

@@ -3,8 +3,6 @@
 #include <cstring>
 #include <iostream>
 #include <vector>
-#include <OpenCL/opencl.h>
-
 
 #ifdef linux
 
@@ -16,7 +14,7 @@
 
 #elif defined TARGET_OS_MAC
 # include <OpenGL/OpenGL.h>
-
+# include <OpenCL/opencl.h>
 #endif
 
 
@@ -54,6 +52,7 @@ int IsExtensionSupported(
 
 inline int test_for_gl_cl_sharing() {
 
+
     int err = 0;
 
 #if defined (__APPLE__) || defined(MACOSX)

src/main.cpp

@@ -25,15 +25,15 @@
 #include <OpenCL/cl_ext.h>
 
 #endif
+#include "TestPlatform.cpp"
 #include "Map.h"
 #include "Curses.h"
 #include "util.hpp"
 #include "RayCaster.h"
 #include "CL_Wrapper.h"
 
-const int WINDOW_X = 200;
-const int WINDOW_Y = 200;
-const int WORK_SIZE = WINDOW_X * WINDOW_Y;
+const int WINDOW_X = 1000;
+const int WINDOW_Y = 1000;
 
 const int MAP_X = 1024;
 const int MAP_Y = 1024;
@@ -69,6 +69,7 @@ int main() {
 	sf::Texture t;
 
 	CL_Wrapper c;
+	query_platform_devices();
 	c.acquire_platform_and_device();
 	c.create_shared_context();
 	c.create_command_queue();
@@ -139,18 +140,19 @@ int main() {
         }
     }
 	std::cout << "done\n";
+    int ind = 367;
+    printf("%i === %f, %f, %f\n", ind, view_matrix[ind * 4 + 0], view_matrix[ind * 4 + 1], view_matrix[ind * 4 + 2]);
 
     cl_mem view_matrix_buff = clCreateBuffer(
             c.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
-            sizeof(float) * 4 * view_res.x * view_res.y, view_matrix, NULL
+            sizeof(float) * 3 * view_res.x * view_res.y, view_matrix, NULL
     );
 
-    //sf::Vector3f cam_dir(1.0f, 0.0f, 1.00f);
+    sf::Vector3f cam_dir(1.0f, 0.0f, 1.00f);
 
-    float cam_dir[] = {1.0f, 0.0f, 1.57f, 0.0f};
     cl_mem cam_dir_buff = clCreateBuffer(
             c.getContext(), CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR,
-            sizeof(float) * 4, cam_dir, NULL
+            sizeof(float) * 4, &cam_dir, NULL
     );
 
 
@@ -219,10 +221,9 @@ int main() {
 	c.set_kernel_arg("min_kern", 7, "light_count_buffer");
 	c.set_kernel_arg("min_kern", 8, "image_buffer");
 
+    const int size = WINDOW_X * WINDOW_Y;
 
-
-    s.setTexture(t, true);
-    s.setPosition(0, 0);
+    s.setTexture(t);
 
     // The step size in milliseconds between calls to Update()
     // Lets set it to 16.6 milliseonds (60FPS)
@@ -299,7 +300,7 @@ int main() {
 			cam_vec.x = -1;
 		}
         if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
-            //cam_dir.z = -0.1f;
+            cam_dir.z = -0.1f;
         }
         if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
             cam_vec.z = +0.1f;
@@ -317,15 +318,15 @@ int main() {
 
 				// Mouse movement
 				sf::Mouse::setPosition(fixed);
-				cam_dir[1] -= deltas.y / 300.0f;
-				cam_dir[2] -= deltas.x / 300.0f;
+				cam_dir.y -= deltas.y / 300.0f;
+				cam_dir.z -= deltas.x / 300.0f;
 			}
 		}
 		cam_pos.x += cam_vec.x / 1.0;
 		cam_pos.y += cam_vec.y / 1.0;
 		cam_pos.z += cam_vec.z / 1.0;
 
-		//std::cout << cam_vec.x << " : " << cam_vec.y << " : " << cam_vec.z << std::endl;
+		std::cout << cam_vec.x << " : " << cam_vec.y << " : " << cam_vec.z << std::endl;
 
 
         // Time keeping
@@ -363,7 +364,7 @@ int main() {
 		error = clEnqueueAcquireGLObjects(c.getCommandQueue(), 1, &image_buff, 0, 0, 0);
 		if (c.assert(error, "clEnqueueAcquireGLObjects"))
 			return -1;
-		c.run_kernel("min_kern", WORK_SIZE);
+		c.run_kernel("min_kern", size);
 
 		clFinish(c.getCommandQueue());
 
@@ -371,6 +372,7 @@ int main() {
 		if (c.assert(error, "clEnqueueReleaseGLObjects"))
 			return -1;
 
+        s.setPosition(0, 0);
         window.draw(s);
 		
 		fps.frame(delta_time);