private void RenderSpriteList(List<_2DSprite> sprites, Effect effect, EffectTechnique technique)
{
if (sprites.Count == 0) { return; }
/** Group by texture **/
var groupByTexture = GroupByTexture(sprites);
foreach (var group in groupByTexture)
{
var texture = group.Pixel;
var depth = group.Depth;
var numSprites = group.Sprites.Count;
effect.Parameters["pixelTexture"].SetValue(texture);
if (depth != null)
{
effect.Parameters["depthTexture"].SetValue(depth);
}
/** Build vertex data **/
var verticies = new _2DSpriteVertex[4 * numSprites];
var indices = new short[6 * numSprites];
var indexCount = 0;
var vertexCount = 0;
foreach (var sprite in group.Sprites)
{
var srcRectangle = sprite.SrcRect;
var dstRectangle = sprite.AbsoluteDestRect;
indices[indexCount++] = (short)(vertexCount + 0);
indices[indexCount++] = (short)(vertexCount + 1);
indices[indexCount++] = (short)(vertexCount + 3);
indices[indexCount++] = (short)(vertexCount + 1);
indices[indexCount++] = (short)(vertexCount + 2);
indices[indexCount++] = (short)(vertexCount + 3);
// add the new vertices
if (sprite.FlipHorizontally)
{
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
}
else
{
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
}
}
effect.CurrentTechnique = technique;
effect.Begin();
EffectPassCollection passes = technique.Passes;
for (int i = 0; i < passes.Count; i++)
{
EffectPass pass = passes[i];
pass.Begin();
Device.DrawUserIndexedPrimitives<_2DSpriteVertex>(
PrimitiveType.TriangleList, verticies, 0, verticies.Length,
indices, 0, indices.Length / 3);
pass.End();
}
effect.End();
}
}
private void RenderSpriteList(List <_2DSprite> sprites, Effect effect, EffectTechnique technique)
{
if (sprites.Count == 0)
{
return;
}
/** Group by texture **/
var groupByTexture = GroupByTexture(sprites);
foreach (var group in groupByTexture)
{
var texture = group.Pixel;
var depth = group.Depth;
var numSprites = group.Sprites.Count;
effect.Parameters["pixelTexture"].SetValue(texture);
if (depth != null)
{
effect.Parameters["depthTexture"].SetValue(depth);
}
/** Build vertex data **/
var verticies = new _2DSpriteVertex[4 * numSprites];
var indices = new short[6 * numSprites];
var indexCount = 0;
var vertexCount = 0;
foreach (var sprite in group.Sprites)
{
var srcRectangle = sprite.SrcRect;
var dstRectangle = sprite.AbsoluteDestRect;
indices[indexCount++] = (short)(vertexCount + 0);
indices[indexCount++] = (short)(vertexCount + 1);
indices[indexCount++] = (short)(vertexCount + 3);
indices[indexCount++] = (short)(vertexCount + 1);
indices[indexCount++] = (short)(vertexCount + 2);
indices[indexCount++] = (short)(vertexCount + 3);
// add the new vertices
if (sprite.FlipHorizontally)
{
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
}
else
{
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Top, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Top), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Right, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Right, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
verticies[vertexCount++] = new _2DSpriteVertex(
new Vector3(dstRectangle.Left, dstRectangle.Bottom, 0)
, GetUV(texture, srcRectangle.Left, srcRectangle.Bottom), sprite.AbsoluteWorldPosition);
}
}
effect.CurrentTechnique = technique;
effect.Begin();
EffectPassCollection passes = technique.Passes;
for (int i = 0; i < passes.Count; i++)
{
EffectPass pass = passes[i];
pass.Begin();
Device.DrawUserIndexedPrimitives <_2DSpriteVertex>(
PrimitiveType.TriangleList, verticies, 0, verticies.Length,
indices, 0, indices.Length / 3);
pass.End();
}
effect.End();
}
}
