public void Draw(DrawState state)
{
//switch rendering mode based on the TutorialRenderMode flag
switch (state.GetDrawFlag <TutorialRenderMode>())
{
case TutorialRenderMode.DepthOutput:
//bind the depth output shader
state.GetShader <Xen.Ex.Shaders.NonLinearDepthOutRg>().Bind(state);
break;
case TutorialRenderMode.DrawShadow:
//bind the shadow rendering shader
Shader.ShadowShader shader = state.GetShader <Shader.ShadowShader>();
shader.TextureMap = material.TextureMap;
shader.TextureSampler = material.TextureMapSampler;
shader.Bind(state);
break;
default:
//no flag known specified
material.Bind(state);
break;
}
//draw the ground
vertices.Draw(state, null, PrimitiveType.TriangleFan);
}
//draw the ground plane..
public void Draw(DrawState state)
{
//first bind the material shader
material.Bind(state);
//then draw the vertices
vertices.Draw(state, null, PrimitiveType.TriangleFan);
}
/// <summary>
/// End the modifier (This method is called by the DrawTarget)
/// </summary>
/// <param name="state"></param>
public void End(DrawState state)
{
if (enabledBuffer)
{
state.PopPostCuller();
}
if (cubes.Count > 0 ||
spheres.Count > 0)
{
state.PushCamera(camera);
state.PushRenderState();
state.RenderState.DepthColourCull.DepthWriteEnabled = false;
state.RenderState.AlphaBlend = AlphaBlendState.Alpha;
Xen.Ex.Shaders.FillSolidColour shader = state.GetShader <Xen.Ex.Shaders.FillSolidColour>();
shader.FillColour = new Vector4(1, 1, 1, 0.25f);
shader.Bind(state);
GenCubeVS(state);
GenSphereVS(state);
Matrix mat;
for (int i = 0; i < cubes.Count; i++)
{
mat = cubes[i];
state.PushWorldMatrix(ref mat);
cubeVS.Draw(state, null, PrimitiveType.LineList);
state.PopWorldMatrix();
}
mat = Matrix.Identity;
Vector4 v;
for (int i = 0; i < spheres.Count; i++)
{
v = spheres[i];
mat.M11 = v.W;
mat.M22 = v.W;
mat.M33 = v.W;
mat.M41 = v.X;
mat.M42 = v.Y;
mat.M43 = v.Z;
state.PushWorldMatrix(ref mat);
sphereVS.Draw(state, null, PrimitiveType.LineList);
state.PopWorldMatrix();
}
state.PopRenderState();
state.PopCamera();
}
}
public void Draw(DrawState state)
{
Xen.Ex.Shaders.FillSolidColour shader = state.GetShader <Xen.Ex.Shaders.FillSolidColour>();
shader.FillColour = colour;
shader.Bind(state);
vertices.Draw(state, null, PrimitiveType.TriangleStrip);
}
public void Draw(DrawState state)
{
//scale the mesh
Matrix scaleMatrix;
Matrix.CreateScale(this.scale, out scaleMatrix);
state.PushWorldMatrixMultiply(ref worldMatrix);
state.PushWorldMatrixMultiply(ref scaleMatrix);
//setup blending
state.PushRenderState();
state.RenderState.DepthColourCull.CullMode = CullMode.None;
state.RenderState.AlphaBlend = AlphaBlendState.AdditiveSaturate;
state.RenderState.DepthColourCull.DepthWriteEnabled = false;
//draw
Xen.Ex.Shaders.FillVertexColour shader = state.GetShader <Xen.Ex.Shaders.FillVertexColour>();
shader.Bind(state);
vertices.Draw(state, null, PrimitiveType.TriangleFan);
state.PopRenderState();
state.PopWorldMatrix();
state.PopWorldMatrix();
//this is a hack :-)
//flicker the scale
//every so often, target a new scale
if (random.Next(100) > 75)
{
scaleTarget = (float)random.NextDouble() * 0.4f + 0.6f;
}
//interpolate to the scale target
this.scale = this.scale * 0.75f + this.scaleTarget * 0.25f;
}
protected override void DrawElement(DrawState state)
{
if (graph == null)
{
graph = state.UserValues[graphID] as IVertices;
if (graph == null)
{
float[] graphValues = new float[MaxGraphSamples];
for (int i = 0; i < MaxGraphSamples; i++)
{
graphValues[i] = (float)i;
}
this.graph = Vertices <float> .CreateSingleElementVertices(graphValues, VertexElementUsage.Position, 0);
state.UserValues[graphID] = this.graph;
}
}
graph.Draw(state, null, PrimitiveType.LineStrip, this.values.Length - 1, 0, 0);
}
/// <summary>
/// Draw the cube geometry
/// </summary>
/// <param name="state"></param>
public void Draw(DrawState state)
{
verts.Draw(state, inds, PrimitiveType.TriangleList);
}
/// <summary>
/// draws the particles on a GPU system
/// </summary>
protected override void DrawGpuParticles(DrawState state, Content.ParticleSystemTypeData particleType, uint particleCount, AlphaBlendState blendMode, Texture2D positionTex, Texture2D velocityRotation, Texture2D colourTex, Texture2D userValues, bool usesUserValuesPositionBuffer)
{
//this is very similar to the billboard drawer (see it for reference)
Vector2 targetSize = state.DrawTarget.Size;
state.PushRenderState();
state.RenderState.AlphaBlend = blendMode;
state.RenderState.DepthColourCull.DepthWriteEnabled = false;
Texture2D displayTexture = particleType.Texture ?? Xen.Ex.Material.WhiteTexture.GetTexture(state);
//get the shared vertice
BillboardParticles2DElement.GenerateBillboardVertices(state, ref vertices, ref indices);
int count = (int)particleCount;
DrawVelocityParticles_GpuTex shaderNoColour = null;
DrawVelocityParticlesColour_GpuTex shaderColour = null;
//user variants
DrawVelocityParticles_GpuTex_UserOffset shaderNoColour_UO = null;
DrawVelocityParticlesColour_GpuTex_UserOffset shaderColour_UO = null;
float resolutionXF = (float)positionTex.Width;
float resolutionYF = (float)positionTex.Height;
Vector2 invTextureSize;
Vector2 velScale = new Vector2(velocityScale, 0);
if (this.useRotationToScaleVelocityEffect)
{
velScale = new Vector2(0, velocityScale);
}
invTextureSize = new Vector2(1.0f / resolutionXF, 1.0f / resolutionYF);
IShader shader;
if (!usesUserValuesPositionBuffer)
{
if (colourTex != null)
{
shader = shaderColour = state.GetShader <DrawVelocityParticlesColour_GpuTex>();
shaderColour.PositionTexture = positionTex;
shaderColour.ColourTexture = colourTex;
shaderColour.VelocityTexture = velocityRotation;
shaderColour.DisplayTexture = displayTexture;
shaderColour.SetVelocityScale(ref velScale);
}
else
{
shader = shaderNoColour = state.GetShader <DrawVelocityParticles_GpuTex>();
shaderNoColour.PositionTexture = positionTex;
shaderNoColour.VelocityTexture = velocityRotation;
shaderNoColour.DisplayTexture = displayTexture;
shaderNoColour.SetVelocityScale(ref velScale);
}
}
else
{
if (colourTex != null)
{
shader = shaderColour_UO = state.GetShader <DrawVelocityParticlesColour_GpuTex_UserOffset>();
shaderColour_UO.PositionTexture = positionTex;
shaderColour_UO.ColourTexture = colourTex;
shaderColour_UO.VelocityTexture = velocityRotation;
shaderColour_UO.UserTexture = userValues;
shaderColour_UO.DisplayTexture = displayTexture;
shaderColour_UO.SetVelocityScale(ref velScale);
}
else
{
shader = shaderNoColour_UO = state.GetShader <DrawVelocityParticles_GpuTex_UserOffset>();
shaderNoColour_UO.PositionTexture = positionTex;
shaderNoColour_UO.VelocityTexture = velocityRotation;
shaderNoColour_UO.UserTexture = userValues;
shaderNoColour_UO.DisplayTexture = displayTexture;
shaderNoColour_UO.SetVelocityScale(ref velScale);
}
}
int drawn = 0;
while (count > 0)
{
int drawCount = Math.Min(count, vertices.Count / 4);
if (!usesUserValuesPositionBuffer)
{
if (colourTex != null)
{
shaderColour.TextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
else
{
shaderNoColour.TextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
}
else
{
if (colourTex != null)
{
shaderColour_UO.TextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
else
{
shaderNoColour_UO.TextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
}
//bind
shader.Bind(state);
vertices.Draw(state, indices, PrimitiveType.TriangleList, drawCount * 2, 0, 0);
count -= drawCount;
drawn += drawCount;
}
state.PopRenderState();
}
//draw the particle update data
void IDraw.Draw(DrawState state)
{
int copyIndex = 0;
//keep an application wide cache of the vertices used
AllocateVertices(state);
//special mode, renderig the life / age of particles
if (renderLifeStoreMode)
{
DrawLifeAgeToStore(state);
return;
}
//otherwise, render normal
//move particles
if (activeRenderPass.CopyCount > 0)
{
while (activeRenderPass.CopyCount > 0)
{
int count = (this.processorData.FrameMoveShader as GpuParticleShader).SetMoveShaderEnabled(state, this, null, activeRenderPass.CopyData, null, activeRenderPass.CopyCount, copyIndex);
this.processorData.FrameMoveShader.Bind(state);
verticesRenderIndex.Draw(state, null, PrimitiveType.PointList, Math.Min(count, activeRenderPass.CopyCount), 0, 0);
activeRenderPass.CopyCount -= count;
copyIndex += count;
}
}
//particle are being added?
for (int i = 0; i < activeRenderPass.AddLists.Length; i++)
{
ProcessorAddList list = activeRenderPass.AddLists[i];
if (list.AddCount > 0)
{
copyIndex = 0;
GpuParticleShader shader = this.processorData.OnceShader as GpuParticleShader;
//added from a different processor?
if (list.processor != null)
{
shader = this.processorData.OnceCloneShader as GpuParticleShader;
Texture2D t0, t1, t2, t3, t4;
list.processor.GetLogicTextures(state, out t0, out t1, out t2, out t3, out t4);
shader.SetTextures(state, t0, t1, t2, t3, randomTexture.GetTexture(state), t4);
}
else
{
shader.SetTextures(state, null, null, null, null, randomTexture.GetTexture(state), null);
}
while (list.AddCount > 0)
{
//draw them
int count = shader.SetMoveShaderEnabled(state, this, list.processor, list.AddData, list.AddDetails, list.AddCount, copyIndex);
shader.Bind(state);
verticesRenderIndex.Draw(state, null, PrimitiveType.PointList, Math.Min(count, list.AddCount), 0, 0);
list.AddCount -= count;
copyIndex += count;
}
}
}
}
/// <summary>
/// implements the method to draw gpu particles
/// </summary>
protected override void DrawGpuParticles(DrawState state, Content.ParticleSystemTypeData particleType, uint particleCount, AlphaBlendState blendMode, Texture2D positionTex, Texture2D velocityRotation, Texture2D colourTex, Texture2D userValues, bool usesUserValuesPositionBuffer)
{
Vector2 targetSize = state.DrawTarget.Size;
state.PushRenderState();
state.RenderState.AlphaBlend = blendMode;
state.RenderState.DepthColourCull.DepthWriteEnabled = false;
//get the display texture, or a white texture if none exists
Texture2D displayTexture = particleType.Texture ?? Xen.Ex.Material.WhiteTexture.GetTexture(state);
//get / create the shared vertices and indices for drawing billboard particles
BillboardParticles2DElement.GenerateBillboardVertices(state, ref vertices, ref indices);
int count = (int)particleCount;
//instances of the two possible shaders
DrawVelocityBillboardParticles_GpuTex3D shaderNoColour = null;
DrawVelocityBillboardParticlesColour_GpuTex3D shaderColour = null;
//user variantes
DrawVelocityBillboardParticles_GpuTex3D_UserOffset shaderNoColour_UO = null;
DrawVelocityBillboardParticlesColour_GpuTex3D_UserOffset shaderColour_UO = null;
float resolutionXF = (float)positionTex.Width;
float resolutionYF = (float)positionTex.Height;
Vector2 invTextureSize = new Vector2(1.0f / resolutionXF, 1.0f / resolutionYF);
Matrix cameraMatrix;
state.Camera.GetCameraMatrix(out cameraMatrix);
Vector3 worldSpaceYAxis = new Vector3(cameraMatrix.M21, cameraMatrix.M22, cameraMatrix.M23);
Vector2 velScale = new Vector2(velocityScale, 0);
if (this.useRotationToScaleVelocityEffect)
{
velScale = new Vector2(0, velocityScale);
}
IShader shader;
if (!usesUserValuesPositionBuffer)
{
if (colourTex != null) // does this particle system use colours?
{
//get the shader
shaderColour = state.GetShader <DrawVelocityBillboardParticlesColour_GpuTex3D>();
//set the samplers
shaderColour.PositionTexture = positionTex;
shaderColour.ColourTexture = colourTex;
shaderColour.VelocityTexture = velocityRotation;
shaderColour.DisplayTexture = displayTexture;
shaderColour.SetWorldSpaceYAxis(ref worldSpaceYAxis);
shaderColour.SetVelocityScale(ref velScale);
shader = shaderColour;
}
else
{
shaderNoColour = state.GetShader <DrawVelocityBillboardParticles_GpuTex3D>();
shaderNoColour.PositionTexture = positionTex;
shaderNoColour.VelocityTexture = velocityRotation;
shaderNoColour.DisplayTexture = displayTexture;
shaderNoColour.SetWorldSpaceYAxis(ref worldSpaceYAxis);
shaderNoColour.SetVelocityScale(ref velScale);
shader = shaderNoColour;
}
}
else
{
if (colourTex != null) // does this particle system use colours?
{
//get the shader
shaderColour_UO = state.GetShader <DrawVelocityBillboardParticlesColour_GpuTex3D_UserOffset>();
//set the samplers
shaderColour_UO.PositionTexture = positionTex;
shaderColour_UO.ColourTexture = colourTex;
shaderColour_UO.VelocityTexture = velocityRotation;
shaderColour_UO.UserTexture = userValues;
shaderColour_UO.DisplayTexture = displayTexture;
shaderColour_UO.SetWorldSpaceYAxis(ref worldSpaceYAxis);
shaderColour_UO.SetVelocityScale(ref velScale);
shader = shaderColour_UO;
}
else
{
shaderNoColour_UO = state.GetShader <DrawVelocityBillboardParticles_GpuTex3D_UserOffset>();
shaderNoColour_UO.PositionTexture = positionTex;
shaderNoColour_UO.VelocityTexture = velocityRotation;
shaderNoColour_UO.UserTexture = userValues;
shaderNoColour_UO.DisplayTexture = displayTexture;
shaderNoColour_UO.SetWorldSpaceYAxis(ref worldSpaceYAxis);
shaderNoColour_UO.SetVelocityScale(ref velScale);
shader = shaderNoColour_UO;
}
}
int drawn = 0;
while (count > 0)
{
//draw upto vertices.Count / 4 (4 vertices per quad)
int drawCount = Math.Min(count, vertices.Count / 4);
//set the inverse texture size, and the start offset value, then bind the shader
if (!usesUserValuesPositionBuffer)
{
if (colourTex != null)
{
shaderColour.InvTextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
else
{
shaderNoColour.InvTextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
}
else
{
if (colourTex != null)
{
shaderColour_UO.InvTextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
else
{
shaderNoColour_UO.InvTextureSizeOffset = new Vector3(invTextureSize, (float)drawn);
}
}
//bind
shader.Bind(state);
//draw!
vertices.Draw(state, indices, PrimitiveType.TriangleList, drawCount * 2, 0, 0);
count -= drawCount;
drawn += drawCount;
}
//and done.
state.PopRenderState();
}
