Added new demo, tweaked some values to produce better lighting

README.md

@@ -15,7 +15,7 @@ In order to build this project you must have Cmake, GLEW, SFML, and the OpenCL d
 
 Video demo:
 
-[![Video demo](http://img.youtube.com/vi/DHcg2ZKend0/0.jpg)](http://www.youtube.com/watch?v=DHcg2ZKend0)
+[![Video demo](http://img.youtube.com/vi/DHcg2ZKend0/0.jpg)](http://www.youtube.com/watch?v=JmD5ISHbKbU)
 
 Screenshots:
 

include/util.hpp

@@ -38,7 +38,7 @@ public:
 		arr_pos++;
 
 		ImGui::Begin("Performance");
-		ImGui::PlotLines("FPS", fps_array, 200, 0, std::to_string(1.0 / fps_average).c_str(), 0.0f, 150.0f, ImVec2(0, 80));
+		ImGui::PlotLines("FPS", fps_array, 200, 0, std::to_string(1.0 / fps_average).c_str(), 0.0f, 150.0f, ImVec2(200, 80));
 		ImGui::End();
 	}
 

kernels/ray_caster_kernel.cl

@@ -15,7 +15,7 @@ float4 white_light(float4 input, float3 light, int3 mask) {
 			normalize(light),
 			normalize(convert_float3(mask * (-mask)))
 			)
-		) / 8;
+		) / 32;
 
 	return input;
 
@@ -72,9 +72,9 @@ bool cast_light_intersection_ray(
 	){
 
 	float distance_to_light = DistanceBetweenPoints(ray_pos, (float3)(lights[4], lights[5], lights[6]));
-	if (distance_to_light > 200.0f){ 
-		return false;
-	}
+	//if (distance_to_light > 200.0f){
+	//	return false;
+	//}
 
 	// Setup the voxel step based on what direction the ray is pointing
 	int3 voxel_step = { 1, 1, 1 };
@@ -219,7 +219,7 @@ __kernel void raycaster(
 
 	int3 face_mask = { 0, 0, 0 };
 	float4 fog_color = { 0.73f, 0.81f, 0.89f, 0.8f };
-	float4 voxel_color = (float4)(0.50f, 0.0f, 0.50f, 0.1f);
+	float4 voxel_color = (float4)(0.0f, 0.0f, 0.0f, 0.001f);
 	float4 overshoot_color = { 0.25f, 0.48f, 0.52f, 0.8f };
 	float4 overshoot_color_2 = { 0.25f, 0.1f, 0.52f, 0.8f };
 
@@ -353,7 +353,7 @@ __kernel void raycaster(
 			)) {
 
 				// If the light ray intersected an object on the way to the light point
-				float4 ambient_color = white_light(voxel_color, (float3)(lights[4], lights[5], lights[6]), face_mask);
+				float4 ambient_color = white_light(voxel_color, (float3)(256.0f, 256.0f, 256.0f), face_mask);
 				write_imagef(image, pixel, ambient_color);
 				return;
 			}

src/main.cpp

@@ -35,7 +35,6 @@
 #include "Camera.h"
 #include "Input.h"
 #include "Pub_Sub.h"
-#include "NetworkInput.h"
 #include "LightController.h"
 #include "LightHandle.h"
 #include "imgui/imgui-SFML.h"
@@ -142,7 +141,7 @@ int main() {
 
 	LightController light_controller(raycaster);
 	LightPrototype prototype(
-		sf::Vector3f(100.0f, 100.0f, 30.0f),
+		sf::Vector3f(100.0f, 100.0f, 75.0f),
 		sf::Vector3f(-1.0f, -1.0f, -1.5f),
 		sf::Vector4f(0.2f, 0.9f, 0.0f, 1.0f)
 	);
@@ -276,6 +275,13 @@ int main() {
 			handle->set_position(light);
 		}
 
+		light_pos[0] = sin(elapsed_time) * 100.0f + 300.0f;
+		light_pos[1] = sin(elapsed_time) * 100.0f + 300.0f;
+
+		sf::Vector3f light(light_pos[0], light_pos[1], light_pos[2]);
+		handle->set_position(light);
+
+
 		ImGui::End();
 
 

src/raycaster/Hardware_Caster.cpp

@@ -292,7 +292,7 @@ int Hardware_Caster::acquire_platform_and_device() {
 
 		// Check to see if we even have OpenCL on this machine
 		if (deviceIdCount == 0) {
-			std::cout << "There appears to be no platforms supporting OpenCL" << std::endl;
+			std::cout << "There appears to be no devices, or none at least supporting OpenCL" << std::endl;
 			return OPENCL_NOT_SUPPORTED;
 		}
 
@@ -372,6 +372,10 @@ int Hardware_Caster::acquire_platform_and_device() {
 
 			// Upon success of a condition, set the current best device values
 
+			//if (strcmp(device.version, "OpenCL 1.2 ") == 0 && strcmp(device.version, current_best_device.version) != 0) {
+			//	current_best_device = device;
+			//}
+
 			// If the current device is not a GPU and we are comparing it to a GPU
 			if (device.type == CL_DEVICE_TYPE_GPU && current_best_device.type != CL_DEVICE_TYPE_GPU) {
 				current_best_device = device;
@@ -453,6 +457,8 @@ int Hardware_Caster::create_shared_context() {
 
 #endif
 
+	
+
 	// Create our shared context
 	context = clCreateContext(
 		context_properties,
@@ -518,7 +524,8 @@ int Hardware_Caster::compile_kernel(std::string kernel_source, bool is_path, std
 
 
 	// Try and build the program
-	error = clBuildProgram(program, 1, &device_id, "-cl-finite-math-only -cl-fast-relaxed-math -cl-unsafe-math-optimizations", NULL, NULL);
+	// "-cl-finite-math-only -cl-fast-relaxed-math -cl-unsafe-math-optimizations"
+	error = clBuildProgram(program, 1, &device_id, NULL, NULL, NULL);
 
 	// Check to see if it errored out
 	if (vr_assert(error, "clBuildProgram")) {
@@ -901,6 +908,12 @@ bool Hardware_Caster::vr_assert(int error_code, std::string function_name) {
 	case CL_INVALID_DEVICE_PARTITION_COUNT:
 		err_msg = "CL_INVALID_DEVICE_PARTITION_COUNT";
 		break;
+	case CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR :
+		err_msg = "CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR";
+		break;
+	case CL_PLATFORM_NOT_FOUND_KHR :
+		err_msg = "CL_PLATFORM_NOT_FOUND_KHR";
+		break;
 	case RayCaster::SHARING_NOT_SUPPORTED:
 		err_msg = "SHARING_NOT_SUPPORTED";
 		break;