From 416e1b7441d34512fcb0ffed014daf7ca4bb62bd Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Wed, 14 Apr 2021 21:36:36 -0300
Subject: spirv: Implement image buffers

---
 src/video_core/buffer_cache/buffer_cache.h | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

(limited to 'src/video_core/buffer_cache')

diff --git a/src/video_core/buffer_cache/buffer_cache.h b/src/video_core/buffer_cache/buffer_cache.h
index 6701aab82..29746f61d 100644
--- a/src/video_core/buffer_cache/buffer_cache.h
+++ b/src/video_core/buffer_cache/buffer_cache.h
@@ -154,7 +154,7 @@ public:
     void UnbindGraphicsTextureBuffers(size_t stage);
 
     void BindGraphicsTextureBuffer(size_t stage, size_t tbo_index, GPUVAddr gpu_addr, u32 size,
-                                   PixelFormat format);
+                                   PixelFormat format, bool is_written);
 
     void UnbindComputeStorageBuffers();
 
@@ -163,8 +163,8 @@ public:
 
     void UnbindComputeTextureBuffers();
 
-    void BindComputeTextureBuffer(size_t tbo_index, GPUVAddr gpu_addr, u32 size,
-                                  PixelFormat format);
+    void BindComputeTextureBuffer(size_t tbo_index, GPUVAddr gpu_addr, u32 size, PixelFormat format,
+                                  bool is_written);
 
     void FlushCachedWrites();
 
@@ -393,7 +393,9 @@ private:
     u32 written_compute_storage_buffers = 0;
 
     std::array<u32, NUM_STAGES> enabled_texture_buffers{};
+    std::array<u32, NUM_STAGES> written_texture_buffers{};
     u32 enabled_compute_texture_buffers = 0;
+    u32 written_compute_texture_buffers = 0;
 
     std::array<u32, NUM_STAGES> fast_bound_uniform_buffers{};
 
@@ -700,12 +702,14 @@ void BufferCache<P>::BindGraphicsStorageBuffer(size_t stage, size_t ssbo_index,
 template <class P>
 void BufferCache<P>::UnbindGraphicsTextureBuffers(size_t stage) {
     enabled_texture_buffers[stage] = 0;
+    written_texture_buffers[stage] = 0;
 }
 
 template <class P>
 void BufferCache<P>::BindGraphicsTextureBuffer(size_t stage, size_t tbo_index, GPUVAddr gpu_addr,
-                                               u32 size, PixelFormat format) {
+                                               u32 size, PixelFormat format, bool is_written) {
     enabled_texture_buffers[stage] |= 1U << tbo_index;
+    written_texture_buffers[stage] |= (is_written ? 1U : 0U) << tbo_index;
     texture_buffers[stage][tbo_index] = GetTextureBufferBinding(gpu_addr, size, format);
 }
 
@@ -732,12 +736,14 @@ void BufferCache<P>::BindComputeStorageBuffer(size_t ssbo_index, u32 cbuf_index,
 template <class P>
 void BufferCache<P>::UnbindComputeTextureBuffers() {
     enabled_compute_texture_buffers = 0;
+    written_compute_texture_buffers = 0;
 }
 
 template <class P>
 void BufferCache<P>::BindComputeTextureBuffer(size_t tbo_index, GPUVAddr gpu_addr, u32 size,
-                                              PixelFormat format) {
+                                              PixelFormat format, bool is_written) {
     enabled_compute_texture_buffers |= 1U << tbo_index;
+    written_compute_texture_buffers |= (is_written ? 1U : 0U) << tbo_index;
     compute_texture_buffers[tbo_index] = GetTextureBufferBinding(gpu_addr, size, format);
 }
 
@@ -1274,6 +1280,10 @@ void BufferCache<P>::UpdateTextureBuffers(size_t stage) {
     ForEachEnabledBit(enabled_texture_buffers[stage], [&](u32 index) {
         Binding& binding = texture_buffers[stage][index];
         binding.buffer_id = FindBuffer(binding.cpu_addr, binding.size);
+        // Mark buffer as written if needed
+        if (((written_texture_buffers[stage] >> index) & 1) != 0) {
+            MarkWrittenBuffer(binding.buffer_id, binding.cpu_addr, binding.size);
+        }
     });
 }
 
@@ -1343,6 +1353,10 @@ void BufferCache<P>::UpdateComputeTextureBuffers() {
     ForEachEnabledBit(enabled_compute_texture_buffers, [&](u32 index) {
         Binding& binding = compute_texture_buffers[index];
         binding.buffer_id = FindBuffer(binding.cpu_addr, binding.size);
+        // Mark as written if needed
+        if (((written_compute_texture_buffers >> index) & 1) != 0) {
+            MarkWrittenBuffer(binding.buffer_id, binding.cpu_addr, binding.size);
+        }
     });
 }
 
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