Quartz 4

VertexArrayCache.java

4 min read

VertexArrayCache.java

com.mojang.blaze3d.opengl.VertexArrayCache

信息

  • 全限定名：com.mojang.blaze3d.opengl.VertexArrayCache
  • 类型：public abstract class
  • 包：com.mojang.blaze3d.opengl
  • 源码路径：src/main/java/com/mojang/blaze3d/opengl/VertexArrayCache.java
  • 起始行号：L16
  • 职责：

    TODO

字段/常量

  • 无

内部类/嵌套类型

  • com.mojang.blaze3d.opengl.VertexArrayCache.Emulated

    • 类型: class
    • 修饰符: private static
    • 源码定位: L29
    • 说明:

      TODO

  • com.mojang.blaze3d.opengl.VertexArrayCache.Separate

    • 类型: class
    • 修饰符: private static
    • 源码定位: L83
    • 说明:

      TODO

  • com.mojang.blaze3d.opengl.VertexArrayCache.VertexArray

    • 类型: class
    • 修饰符: public static
    • 源码定位: L144
    • 说明:

      TODO

构造器

  • 无

方法

下面的方法块按源码顺序生成。

public static VertexArrayCache create(GLCapabilities capabilities, GlDebugLabel debugLabels, Set<String> enabledExtensions) @ L17

  • 方法名：create
  • 源码定位：L17
  • 返回类型：VertexArrayCache
  • 修饰符：public static

参数:

  • capabilities: GLCapabilities
  • debugLabels: GlDebugLabel
  • enabledExtensions: Set

说明:

TODO

public abstract void bindVertexArray(VertexFormat format, GlBuffer vertexBuffer) @ L26

  • 方法名：bindVertexArray
  • 源码定位：L26
  • 返回类型：void
  • 修饰符：public abstract

参数:

  • format: VertexFormat
  • vertexBuffer: GlBuffer

说明:

TODO

代码

@OnlyIn(Dist.CLIENT)
public abstract class VertexArrayCache {
    public static VertexArrayCache create(GLCapabilities capabilities, GlDebugLabel debugLabels, Set<String> enabledExtensions) {
        if (capabilities.GL_ARB_vertex_attrib_binding && GlDevice.USE_GL_ARB_vertex_attrib_binding) {
            enabledExtensions.add("GL_ARB_vertex_attrib_binding");
            return new VertexArrayCache.Separate(debugLabels);
        } else {
            return new VertexArrayCache.Emulated(debugLabels);
        }
    }
 
    public abstract void bindVertexArray(final VertexFormat format, final @Nullable GlBuffer vertexBuffer);
 
    @OnlyIn(Dist.CLIENT)
    private static class Emulated extends VertexArrayCache {
        private final Map<VertexFormat, VertexArrayCache.VertexArray> cache = new HashMap<>();
        private final GlDebugLabel debugLabels;
 
        public Emulated(GlDebugLabel debugLabels) {
            this.debugLabels = debugLabels;
        }
 
        @Override
        public void bindVertexArray(VertexFormat format, @Nullable GlBuffer vertexBuffer) {
            VertexArrayCache.VertexArray vertexArray = this.cache.get(format);
            if (vertexArray == null) {
                int id = GlStateManager._glGenVertexArrays();
                GlStateManager._glBindVertexArray(id);
                if (vertexBuffer != null) {
                    GlStateManager._glBindBuffer(34962, vertexBuffer.handle);
                    setupCombinedAttributes(format, true);
                }
 
                VertexArrayCache.VertexArray vao = new VertexArrayCache.VertexArray(id, format, vertexBuffer);
                this.debugLabels.applyLabel(vao);
                this.cache.put(format, vao);
            } else {
                GlStateManager._glBindVertexArray(vertexArray.id);
                if (vertexBuffer != null && vertexArray.lastVertexBuffer != vertexBuffer) {
                    GlStateManager._glBindBuffer(34962, vertexBuffer.handle);
                    vertexArray.lastVertexBuffer = vertexBuffer;
                    setupCombinedAttributes(format, false);
                }
            }
        }
 
        private static void setupCombinedAttributes(VertexFormat format, boolean enable) {
            int vertexSize = format.getVertexSize();
            List<VertexFormatElement> elements = format.getElements();
 
            for (int i = 0; i < elements.size(); i++) {
                VertexFormatElement element = elements.get(i);
                if (enable) {
                    GlStateManager._enableVertexAttribArray(i);
                }
 
                if (!element.normalized() && element.type() != VertexFormatElement.Type.FLOAT) {
                    GlStateManager._vertexAttribIPointer(i, element.count(), GlConst.toGl(element.type()), vertexSize, format.getOffset(element));
                } else {
                    GlStateManager._vertexAttribPointer(
                        i, element.count(), GlConst.toGl(element.type()), element.normalized(), vertexSize, format.getOffset(element)
                    );
                }
            }
        }
    }
 
    @OnlyIn(Dist.CLIENT)
    private static class Separate extends VertexArrayCache {
        private final Map<VertexFormat, VertexArrayCache.VertexArray> cache = new HashMap<>();
        private final GlDebugLabel debugLabels;
        private final boolean needsMesaWorkaround;
 
        public Separate(GlDebugLabel debugLabels) {
            this.debugLabels = debugLabels;
            if ("Mesa".equals(GlStateManager._getString(7936))) {
                String version = GlStateManager._getString(7938);
                this.needsMesaWorkaround = version.contains("25.0.0") || version.contains("25.0.1") || version.contains("25.0.2");
            } else {
                this.needsMesaWorkaround = false;
            }
        }
 
        @Override
        public void bindVertexArray(VertexFormat format, @Nullable GlBuffer vertexBuffer) {
            VertexArrayCache.VertexArray vertexArray = this.cache.get(format);
            if (vertexArray != null) {
                GlStateManager._glBindVertexArray(vertexArray.id);
                if (vertexBuffer != null && vertexArray.lastVertexBuffer != vertexBuffer) {
                    if (this.needsMesaWorkaround && vertexArray.lastVertexBuffer != null && vertexArray.lastVertexBuffer.handle == vertexBuffer.handle) {
                        ARBVertexAttribBinding.glBindVertexBuffer(0, 0, 0L, 0);
                    }
 
                    ARBVertexAttribBinding.glBindVertexBuffer(0, vertexBuffer.handle, 0L, format.getVertexSize());
                    vertexArray.lastVertexBuffer = vertexBuffer;
                }
            } else {
                int id = GlStateManager._glGenVertexArrays();
                GlStateManager._glBindVertexArray(id);
                if (vertexBuffer != null) {
                    List<VertexFormatElement> elements = format.getElements();
 
                    for (int i = 0; i < elements.size(); i++) {
                        VertexFormatElement element = elements.get(i);
                        GlStateManager._enableVertexAttribArray(i);
                        if (!element.normalized() && element.type() != VertexFormatElement.Type.FLOAT) {
                            ARBVertexAttribBinding.glVertexAttribIFormat(i, element.count(), GlConst.toGl(element.type()), format.getOffset(element));
                        } else {
                            ARBVertexAttribBinding.glVertexAttribFormat(
                                i, element.count(), GlConst.toGl(element.type()), element.normalized(), format.getOffset(element)
                            );
                        }
 
                        ARBVertexAttribBinding.glVertexAttribBinding(i, 0);
                    }
                }
 
                if (vertexBuffer != null) {
                    ARBVertexAttribBinding.glBindVertexBuffer(0, vertexBuffer.handle, 0L, format.getVertexSize());
                }
 
                VertexArrayCache.VertexArray vao = new VertexArrayCache.VertexArray(id, format, vertexBuffer);
                this.debugLabels.applyLabel(vao);
                this.cache.put(format, vao);
            }
        }
    }
 
    @OnlyIn(Dist.CLIENT)
    public static class VertexArray {
        final int id;
        final VertexFormat format;
        @Nullable GlBuffer lastVertexBuffer;
 
        private VertexArray(int id, VertexFormat format, @Nullable GlBuffer lastVertexBuffer) {
            this.id = id;
            this.format = format;
            this.lastVertexBuffer = lastVertexBuffer;
        }
    }
}

引用的其他类

  • GlBuffer

    • 引用位置: 参数

  • GlConst

    • 引用位置: 方法调用
    • 关联成员: GlConst.toGl()

  • GlDebugLabel

    • 引用位置: 参数

  • GlStateManager

    • 引用位置: 方法调用
    • 关联成员: GlStateManager._enableVertexAttribArray(), GlStateManager._getString(), GlStateManager._glBindBuffer(), GlStateManager._glBindVertexArray(), GlStateManager._glGenVertexArrays(), GlStateManager._vertexAttribIPointer(), GlStateManager._vertexAttribPointer()

  • VertexFormat

    • 引用位置: 参数

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