From f1d1670b0b1b5c08064df95dabd295f3cf5dcf7f Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Wed, 16 Nov 2022 14:53:04 -0300
Subject: Implement HLE macro for DrawElementsIndirect (#3748)

* Implement HLE macro for DrawElementsIndirect

* Shader cache version bump

* Use GL_ARB_shader_draw_parameters extension on OpenGL

* Fix DrawIndexedIndirectCount on Vulkan when extension is not supported

* Implement DrawIndex

* Alignment

* Fix some validation errors

* Rename BaseIds to DrawParameters

* Fix incorrect index buffer and vertex buffer size in some cases

* Add HLE macros for DrawArraysInstanced and DrawElementsInstanced

* Perform a regular draw when indirect data is not modified

* Use non-indirect draw methods if indirect buffer was not GPU modified

* Only check if draw parameters match if the shader actually uses them

* Expose Macro HLE setting on GUI

* Reset FirstVertex and FirstInstance after draw

* Update shader cache version again since some people already tested this

* PR feedback

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
---
 .../Engine/Threed/IndirectDrawType.cs              | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Ryujinx.Graphics.Gpu/Engine/Threed/IndirectDrawType.cs

(limited to 'Ryujinx.Graphics.Gpu/Engine/Threed/IndirectDrawType.cs')

diff --git a/Ryujinx.Graphics.Gpu/Engine/Threed/IndirectDrawType.cs b/Ryujinx.Graphics.Gpu/Engine/Threed/IndirectDrawType.cs
new file mode 100644
index 00000000..d78aa498
--- /dev/null
+++ b/Ryujinx.Graphics.Gpu/Engine/Threed/IndirectDrawType.cs
@@ -0,0 +1,38 @@
+namespace Ryujinx.Graphics.Gpu.Engine.Threed
+{
+    /// <summary>
+    /// Indirect draw type, which can be indexed or non-indexed, with or without a draw count.
+    /// </summary>
+    enum IndirectDrawType
+    {
+        /// <summary>
+        /// Non-indexed draw without draw count.
+        /// </summary>
+        DrawIndirect = 0,
+
+        /// <summary>
+        /// Indexed draw without draw count.
+        /// </summary>
+        DrawIndexedIndirect = Indexed,
+
+        /// <summary>
+        /// Non-indexed draw with draw count.
+        /// </summary>
+        DrawIndirectCount = Count,
+
+        /// <summary>
+        /// Indexed draw with draw count.
+        /// </summary>
+        DrawIndexedIndirectCount = Indexed | Count,
+
+        /// <summary>
+        /// Indexed flag.
+        /// </summary>
+        Indexed = 1 << 0,
+
+        /// <summary>
+        /// Draw count flag.
+        /// </summary>
+        Count = 1 << 1
+    }
+}
\ No newline at end of file
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