gpu_neon: rework buffer selection

[pcsx_rearmed.git] / plugins / gpu_neon / psx_gpu / psx_gpu.h

diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu.h b/plugins/gpu_neon/psx_gpu/psx_gpu.h
index 6f89cac..0ef957f 100644 (file)
--- a/plugins/gpu_neon/psx_gpu/psx_gpu.h
+++ b/plugins/gpu_neon/psx_gpu/psx_gpu.h
@@ -69,7 +69,7 @@ typedef struct
   u16 y;
 } edge_data_struct;
 
-// 64 bytes total
+// 64 (72) bytes total
 typedef struct
 {
   // 16 bytes
@@ -93,7 +93,7 @@ typedef struct
     vec_8x16u pixels;
   };
 
-  // 8 bytes
+  // 8 (16) bytes
   u32 draw_mask_bits;
   u16 *fb_ptr;
 
@@ -185,18 +185,22 @@ typedef struct
   u32 *reciprocal_table_ptr;
 
   // enhancement stuff
-  u16 *enhancement_buf_ptr;
-  u16 *enhancement_current_buf_ptr;
-  u32 enhancement_x_threshold;
+  u16 *enhancement_buf_ptr;          // main alloc
+  u16 *enhancement_current_buf_ptr;  // offset into above, 4 bufs
+  u32 saved_hres;
   s16 saved_viewport_start_x;
   s16 saved_viewport_start_y;
   s16 saved_viewport_end_x;
   s16 saved_viewport_end_y;
-  u8 enhancement_buf_by_x16[64];
+  u8  enhancement_buf_by_x16[64];    // 0-3 specifying which buf
+  u16 enhancement_buf_start[4];      // x pos where buf[n] begins
+
+  u16 enhancement_scanout_x[4];
+  u16 enhancement_scanout_select;
 
   // Align up to 64 byte boundary to keep the upcoming buffers cache line
   // aligned, also make reachable with single immediate addition
-  u8 reserved_a[160];
+  u8 reserved_a[142];
 
   // 8KB
   block_struct blocks[MAX_BLOCKS_PER_ROW];
@@ -244,6 +248,7 @@ void render_line(psx_gpu_struct *gpu, vertex_struct *vertexes, u32 flags,
 
 u32 texture_region_mask(s32 x1, s32 y1, s32 x2, s32 y2);
 
+void update_texture_8bpp_cache(psx_gpu_struct *psx_gpu);
 void flush_render_block_buffer(psx_gpu_struct *psx_gpu);
 
 void initialize_psx_gpu(psx_gpu_struct *psx_gpu, u16 *vram);