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More renderer work

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Matt Thorson
2020-09-08 20:20:26 -07:00
parent 52d1d5f383
commit ae21809566
7 changed files with 127 additions and 97 deletions
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101
src/PlatformLayer/Batcher.bf
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@ -2,108 +2,23 @@ using System.Collections;
namespace Strawberry
{
public class Batcher
public abstract class Batcher
{
private List<Batch> batches = new .() ~ delete _;
private List<Vertex> vertices = new .() ~ delete _;
private List<uint32> indices = new .() ~ delete _;
protected List<Batch> batches = new .() ~ delete _;
protected List<Vertex> vertices = new .() ~ delete _;
protected List<uint32> indices = new .() ~ delete _;
private uint32 vaoID;
private uint32 vertexBufferID;
private uint32 indexBufferID;
public abstract void Draw();
public this()
{
GL.glGenVertexArrays(1, &vaoID);
GL.glBindVertexArray(vaoID);
GL.glGenBuffers(1, &vertexBufferID);
GL.glGenBuffers(1, &indexBufferID);
GL.glBindVertexArray(0);
}
public ~this()
{
GL.glDeleteBuffers(1, &vertexBufferID);
GL.glDeleteBuffers(1, &indexBufferID);
GL.glDeleteVertexArrays(1, &vaoID);
}
public void Draw()
{
GL.glDisable(GL.GL_CULL_FACE);
GL.glBindVertexArray(vaoID);
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertexBufferID);
GL.glEnableVertexAttribArray(0);
GL.glVertexAttribPointer(0, 2, GL.GL_FLOAT, GL.GL_FALSE, sizeof(Vertex), (void*)0);
GL.glEnableVertexAttribArray(1);
GL.glVertexAttribPointer(1, 2, GL.GL_FLOAT, GL.GL_FALSE, sizeof(Vertex), (void*)8);
GL.glEnableVertexAttribArray(2);
GL.glVertexAttribPointer(2, 4, GL.GL_UNSIGNED_BYTE, GL.GL_TRUE, sizeof(Vertex), (void*)16);
GL.glEnableVertexAttribArray(3);
GL.glVertexAttribPointer(3, 3, GL.GL_UNSIGNED_BYTE, GL.GL_TRUE, sizeof(Vertex), (void*)20);
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertices.Count * sizeof(Vertex), vertices.Ptr, GL.GL_DYNAMIC_DRAW);
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBufferID);
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, indices.Count * sizeof(uint32), indices.Ptr, GL.GL_DYNAMIC_DRAW);
for (let b in batches)
{
if (b.Mode == .Shape)
GL.glBindTexture(GL.GL_TEXTURE_2D, 0);
else
GL.glBindTexture(GL.GL_TEXTURE_2D, b.Texture.Handle);
GL.glDrawElements(GL.GL_TRIANGLES, b.IndicesCount, GL.GL_UNSIGNED_INT, (void*)(b.IndicesStart * sizeof(uint32)));
}
GL.glBindVertexArray(0);
vertices.Clear();
indices.Clear();
batches.Clear();
}
private ref Batch GetBatch(BatchModes mode, Texture texture)
protected ref Batch GetBatch(BatchModes mode, Texture texture)
{
if (batches.Count == 0 || !batches.Back.Matches(mode, texture))
batches.Add(Batch(mode, texture, indices.Count));
return ref batches.Back;
}
protected void PushQuad(BatchModes mode, Texture texture, Vertex a, Vertex b, Vertex c, Vertex d)
{
GetBatch(mode, texture).IndicesCount += 6;
uint32 count = (uint32)vertices.Count;
vertices.Add(a);
vertices.Add(b);
vertices.Add(c);
vertices.Add(d);
indices.Add(count + 0);
indices.Add(count + 1);
indices.Add(count + 2);
indices.Add(count + 0);
indices.Add(count + 2);
indices.Add(count + 3);
}
protected void PushTri(BatchModes mode, Texture texture, Vertex a, Vertex b, Vertex c)
{
GetBatch(mode, texture).IndicesCount += 3;
uint32 count = (uint32)vertices.Count;
vertices.Add(a);
vertices.Add(b);
vertices.Add(c);
indices.Add(count + 0);
indices.Add(count + 1);
indices.Add(count + 2);
}
protected abstract void PushQuad(BatchModes mode, Texture texture, Vertex a, Vertex b, Vertex c, Vertex d);
protected abstract void PushTri(BatchModes mode, Texture texture, Vertex a, Vertex b, Vertex c);
public void Rect(float x, float y, float w, float h, Color color)
{