From 2f90694797e30088820937855acf613bdcf27247 Mon Sep 17 00:00:00 2001
From: FengChen <vonchenplus@gmail.com>
Date: Fri, 21 Oct 2022 19:14:22 +0800
Subject: video_core: Implement maxwell inline_index method

---
 src/video_core/renderer_opengl/gl_rasterizer.cpp | 12 ++++++++++++
 src/video_core/renderer_opengl/gl_rasterizer.h   |  2 ++
 2 files changed, 14 insertions(+)

(limited to 'src/video_core/renderer_opengl')

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 21bac6ebf..1590b21de 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -222,6 +222,8 @@ void RasterizerOpenGL::Draw(bool is_indexed, u32 instance_count) {
     pipeline->SetEngine(maxwell3d, gpu_memory);
     pipeline->Configure(is_indexed);
 
+    BindInlineIndexBuffer();
+
     SyncState();
 
     const GLenum primitive_mode = MaxwellToGL::PrimitiveTopology(maxwell3d->regs.draw.topology);
@@ -1128,6 +1130,16 @@ void RasterizerOpenGL::ReleaseChannel(s32 channel_id) {
     query_cache.EraseChannel(channel_id);
 }
 
+void RasterizerOpenGL::BindInlineIndexBuffer() {
+    if (maxwell3d->inline_index_draw_indexes.empty()) {
+        return;
+    }
+    const auto data_count = static_cast<u32>(maxwell3d->inline_index_draw_indexes.size());
+    auto buffer = Buffer(buffer_cache_runtime, *this, 0, data_count);
+    buffer.ImmediateUpload(0, maxwell3d->inline_index_draw_indexes);
+    buffer_cache_runtime.BindIndexBuffer(buffer, 0, data_count);
+}
+
 AccelerateDMA::AccelerateDMA(BufferCache& buffer_cache_) : buffer_cache{buffer_cache_} {}
 
 bool AccelerateDMA::BufferCopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) {
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
index c93ba3b42..793e0d608 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -199,6 +199,8 @@ private:
     /// End a transform feedback
     void EndTransformFeedback();
 
+    void BindInlineIndexBuffer();
+
     Tegra::GPU& gpu;
 
     const Device& device;
-- 
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