Cleanup.

examples/24-nbody/cs_init_instances.sc

@@ -7,7 +7,7 @@
 #include "uniforms.sh"
 
 BUFFER_WR(prevPositionBuffer, vec4, 0);
-BUFFER_WR(curPositionBuffer,  vec4, 1);
+BUFFER_WR(currPositionBuffer, vec4, 1);
 
 uint rotl(uint _x, uint _r)
 {
@@ -101,5 +101,5 @@ void main()
 	vec3 velocity = u_initialSpeed * randomPointOnSphere(gl_GlobalInvocationID.x, u_baseSeed * 7u + 3u);
 
 	prevPositionBuffer[gl_GlobalInvocationID.x] = vec4(position - velocity * u_timeStep, 0.0);
-	curPositionBuffer[ gl_GlobalInvocationID.x] = vec4(position, 0.0);
+	currPositionBuffer[gl_GlobalInvocationID.x] = vec4(position, 0.0);
 }

examples/24-nbody/cs_update_instances.sc

@@ -7,16 +7,16 @@
 #include "uniforms.sh"
 
 BUFFER_RO(prevPositionBuffer,    vec4, 0);
-BUFFER_RO(curPositionBuffer,     vec4, 1);
+BUFFER_RO(currPositionBuffer,    vec4, 1);
 BUFFER_WR(outPrevPositionBuffer, vec4, 2);
-BUFFER_WR(outCurPositionBuffer,  vec4, 3);
+BUFFER_WR(outCurrPositionBuffer, vec4, 3);
 
 #define GROUP_SIZE 512
 SHARED vec3 otherEntries[GROUP_SIZE];
 
-vec3 calcAcceleration(vec3 _curPosition, vec3 _otherPosition)
+vec3 calcAcceleration(vec3 _currPosition, vec3 _otherPosition)
 {
-	vec3  difference = _otherPosition - _curPosition;
+	vec3  difference = _otherPosition - _currPosition;
 	float dist2 = dot(difference, difference);
 	float dist6 = dist2 * dist2 * dist2;
 	float invDist3 = 1.0 / (sqrt(dist6) + 0.1);
@@ -27,22 +27,22 @@ NUM_THREADS(GROUP_SIZE, 1, 1)
 void main()
 {
 	vec3 prevPosition = prevPositionBuffer[gl_GlobalInvocationID.x].xyz;
-	vec3 curPosition  = curPositionBuffer[ gl_GlobalInvocationID.x].xyz;
+	vec3 currPosition = currPositionBuffer[gl_GlobalInvocationID.x].xyz;
 
 	vec3 newAcceleration = vec3_splat(0.0);
 
 	for (int j = 0; j < int(u_dispatchSize); ++j)
 	{
-		otherEntries[gl_LocalInvocationIndex] = curPositionBuffer[j * GROUP_SIZE + int(gl_LocalInvocationIndex)].xyz;
+		otherEntries[gl_LocalInvocationIndex] = currPositionBuffer[j * GROUP_SIZE + int(gl_LocalInvocationIndex)].xyz;
 
 		barrier();
 		for (int i = 0; i < GROUP_SIZE; ++i)
 		{
-			newAcceleration += calcAcceleration(curPosition, otherEntries[i]);
+			newAcceleration += calcAcceleration(currPosition, otherEntries[i]);
 		}
 	}
 
-	newAcceleration += (prevPosition - curPosition) * u_damping;
+	newAcceleration += (prevPosition - currPosition) * u_damping;
 	float accelerationMagnitude = length(newAcceleration);
 	float color = pow(min(accelerationMagnitude / 3.0, 1.0), 0.25);
 	if (accelerationMagnitude > 0.0)
@@ -50,8 +50,8 @@ void main()
 		newAcceleration = normalize(newAcceleration) * min(accelerationMagnitude, u_maxAcceleration);
 	}
 
-	vec3 newPosition = 2.0 * curPosition - prevPosition + newAcceleration * u_timeStep;
+	vec3 newPosition = 2.0 * currPosition - prevPosition + newAcceleration * u_timeStep;
 
-	outPrevPositionBuffer[gl_GlobalInvocationID.x] = vec4(curPosition, 0.0);
-	outCurPositionBuffer[ gl_GlobalInvocationID.x] = vec4(newPosition, color);
+	outPrevPositionBuffer[gl_GlobalInvocationID.x] = vec4(currPosition, 0.0);
+	outCurrPositionBuffer[gl_GlobalInvocationID.x] = vec4(newPosition, color);
 }

examples/24-nbody/nbody.cpp

@@ -1,7 +1,7 @@
 /*
- * Copyright 2014 Stanlo Slasinski. All rights reserved.
- * License: http://www.opensource.org/licenses/BSD-2-Clause
- */
+* Copyright 2014 Stanlo Slasinski. All rights reserved.
+* License: http://www.opensource.org/licenses/BSD-2-Clause
+*/
 
 #include "common.h"
 #include "bgfx_utils.h"
@@ -22,69 +22,68 @@ struct u_paramsDataStruct
 	float   initialSpeed;
 	int32_t initialShape;
 	float   maxAccel;
-
 };
 
-void InitializeParams(unsigned mode, u_paramsDataStruct * params) 
+void InitializeParams(unsigned _mode, u_paramsDataStruct* _params) 
 {
-    switch(mode) 
-    {
-    case 0:
-        params->timeStep = 0.0067f;
-        params->dispatchSize = 32;
-        params->gravity = 0.069f;
-        params->damping = 0.0f;
-        params->particleIntensity = 0.35f;
-        params->particleSize = 0.925f;
-        params->baseSeed = 0;
-        params->particlePower = 5.0f;
-        params->initialSpeed = 122.6f;
-        params->initialShape = 0;
-        params->maxAccel = 30.0;
-        break;
+	switch(_mode)
+	{
+	case 0:
+		_params->timeStep          = 0.0067f;
+		_params->dispatchSize      = 32;
+		_params->gravity           = 0.069f;
+		_params->damping           = 0.0f;
+		_params->particleIntensity = 0.35f;
+		_params->particleSize      = 0.925f;
+		_params->baseSeed          = 0;
+		_params->particlePower     = 5.0f;
+		_params->initialSpeed      = 122.6f;
+		_params->initialShape      = 0;
+		_params->maxAccel          = 30.0;
+		break;
 
-    case 1:
-        params->timeStep = 0.0157f;
-        params->dispatchSize = 32;
-        params->gravity = 0.109f;
-        params->damping = 0.25f;
-        params->particleIntensity = 0.64f;
-        params->particleSize = 0.279f;
-        params->baseSeed = 57;
-        params->particlePower = 3.5f;
-        params->initialSpeed = 3.2f;
-        params->initialShape = 1;
-        params->maxAccel = 100.0;
-        break;
+	case 1:
+		_params->timeStep          = 0.0157f;
+		_params->dispatchSize      = 32;
+		_params->gravity           = 0.109f;
+		_params->damping           = 0.25f;
+		_params->particleIntensity = 0.64f;
+		_params->particleSize      = 0.279f;
+		_params->baseSeed          = 57;
+		_params->particlePower     = 3.5f;
+		_params->initialSpeed      = 3.2f;
+		_params->initialShape      = 1;
+		_params->maxAccel          = 100.0;
+		break;
 
-    case 2:
-        params->timeStep = 0.02f;
-        params->dispatchSize = 32;
-        params->gravity = 0.24f;
-        params->damping = 0.12f;
-        params->particleIntensity = 1.0f;
-        params->particleSize = 1.0f;
-        params->baseSeed = 23;
-        params->particlePower = 4.0f;
-        params->initialSpeed = 31.1f;
-        params->initialShape = 2;
-        params->maxAccel = 39.29f;
-        break;
+	case 2:
+		_params->timeStep          = 0.02f;
+		_params->dispatchSize      = 32;
+		_params->gravity           = 0.24f;
+		_params->damping           = 0.12f;
+		_params->particleIntensity = 1.0f;
+		_params->particleSize      = 1.0f;
+		_params->baseSeed          = 23;
+		_params->particlePower     = 4.0f;
+		_params->initialSpeed      = 31.1f;
+		_params->initialShape      = 2;
+		_params->maxAccel          = 39.29f;
+		break;
 
-    case 3:
-        params->timeStep = 0.0118f;
-        params->dispatchSize = 32;
-        params->gravity = 0.141f;
-        params->damping = 1.0f;
-        params->particleIntensity = 0.64f;
-        params->particleSize = 0.28f;
-        params->baseSeed = 60;
-        params->particlePower = 1.97f;
-        params->initialSpeed = 69.7f;
-        params->initialShape = 3;
-        params->maxAccel = 3.21f;
-        break;
-    }
+	case 3:
+		_params->timeStep          = 0.0118f;
+		_params->dispatchSize      = 32;
+		_params->gravity           = 0.141f;
+		_params->damping           = 1.0f;
+		_params->particleIntensity = 0.64f;
+		_params->particleSize      = 0.28f;
+		_params->baseSeed          = 60;
+		_params->particlePower     = 1.97f;
+		_params->initialSpeed      = 69.7f;
+		_params->initialShape      = 3;
+		_params->maxAccel          = 3.21f;
+		break;
+	}
 }
 
 static const float s_quadVertices[] =
@@ -129,8 +128,8 @@ int _main_(int /*_argc*/, char** /*_argv*/)
 
 	// Create static vertex buffer.
 	bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(
-		// Static data can be passed with bgfx::makeRef
-		bgfx::makeRef(s_quadVertices, sizeof(s_quadVertices) )
+		  // Static data can be passed with bgfx::makeRef
+		  bgfx::makeRef(s_quadVertices, sizeof(s_quadVertices) )
 		, quadVertexDecl
 		);
 
@@ -150,7 +149,7 @@ int _main_(int /*_argc*/, char** /*_argv*/)
 		.end();
 
 	const uint32_t threadGroupUpdateSize = 512;
-    const uint32_t maxParticleCount = 32 * 1024;
+	const uint32_t maxParticleCount = 32 * 1024;
 
 	bgfx::DynamicVertexBufferHandle currPositionBuffer0 = bgfx::createDynamicVertexBuffer(1 << 15, computeVertexDecl, BGFX_BUFFER_COMPUTE_READ_WRITE);
 	bgfx::DynamicVertexBufferHandle currPositionBuffer1 = bgfx::createDynamicVertexBuffer(1 << 15, computeVertexDecl, BGFX_BUFFER_COMPUTE_READ_WRITE);
@@ -164,8 +163,8 @@ int _main_(int /*_argc*/, char** /*_argv*/)
 	bgfx::ShaderHandle  updateInstancesShader  = loadShader("cs_update_instances");
 	bgfx::ProgramHandle updateInstancesProgram = bgfx::createProgram(updateInstancesShader, true);
 
-    u_paramsDataStruct u_paramsData;
-    InitializeParams(0, &u_paramsData);
+	u_paramsDataStruct u_paramsData;
+	InitializeParams(0, &u_paramsData);
 
 	bgfx::setUniform(u_params, &u_paramsData, 3);
 	bgfx::setBuffer(0, prevPositionBuffer0, bgfx::Access::Write);
@@ -225,18 +224,18 @@ int _main_(int /*_argc*/, char** /*_argv*/)
 		imguiEndScrollArea();
 		imguiEndFrame();
 
-        // Modify parameters and reset if shape is changed
-        if (shape != u_paramsData.initialShape) 
-        {
-            reset = true;
-            InitializeParams(shape, &u_paramsData);
-        }
+		// Modify parameters and reset if shape is changed
+		if (shape != u_paramsData.initialShape) 
+		{
+			reset = true;
+			InitializeParams(shape, &u_paramsData);
+		}
 
 		if (reset)
 		{
 			bgfx::setBuffer(0, prevPositionBuffer0, bgfx::Access::Write);
 			bgfx::setBuffer(1, currPositionBuffer0, bgfx::Access::Write);
-    		bgfx::setUniform(u_params, &u_paramsData, 3);
+			bgfx::setUniform(u_params, &u_paramsData, 3);
 			bgfx::dispatch(0, initInstancesProgram, maxParticleCount / threadGroupUpdateSize, 1, 1);
 		}