From cfb4a291cbd458a98d23d8520deac88f0e6799b6 Mon Sep 17 00:00:00 2001
From: jndean <email@josefdean.co.uk>
Date: Sat, 26 Aug 2023 22:58:50 +0000
Subject: [PATCH] Add visualisation of IPU-rendered walls

---
 src/ipu/r_bsp.c        | 23 +++++++++++++++++------
 src/ipu/r_codelets.cpp |  4 ----
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/src/ipu/r_bsp.c b/src/ipu/r_bsp.c
index a333e18..048d5a8 100644
--- a/src/ipu/r_bsp.c
+++ b/src/ipu/r_bsp.c
@@ -80,8 +80,20 @@ cliprange_t solidsegs[MAXSEGS];
 // JOSEF: !!!!!!!!!!!!!!!!!!!!!
 // JOSEF: TMP to see if BSP is working
 // JOSEF: !!!!!!!!!!!!!!!!!!!!!
+int bspnum;
 void R_StoreWallRange(int start, int stop) {
-  // ACTUAL func in r_segs.c
+  // ACTUAL R_StoreWallRange func is in r_segs.c
+
+  char colour = bspnum % 256;
+  int top = 90, bottom = 110;
+  for (int col = start; col < stop; ++col) {
+    for (int row = top; row < bottom; ++row) {
+      I_VideoBuffer[row * 320 + col] = colour;
+    }
+  }
+  for (int row = top; row < bottom; ++row) {
+    I_VideoBuffer[row * 320 + stop] = 0;
+  }
 }
 
 //
@@ -516,10 +528,8 @@ void R_RenderBSPNode(int bspnum) {
 */
 
 //
-// RenderBSPNode
-// Renders all subsectors below a given node,
-//  traversing subtree recursively.
-// Just call with BSP root.
+// R_RenderBSPNodeNonRecursive
+// Non-recursive version
 void R_RenderBSPNodeNonRecursive() {
   node_t *bsp;
   int side;
@@ -529,7 +539,8 @@ void R_RenderBSPNodeNonRecursive() {
   int sidestack[maxRecursion];
 
   int depth = 0;
-  int bspnum = numnodes - 1;
+  // int bspnum = numnodes - 1; // Temporarily make this global for visualising
+  bspnum = numnodes - 1;
 
   while (1) {
     // Loop that descends tree, taking the front side of each node until it
diff --git a/src/ipu/r_codelets.cpp b/src/ipu/r_codelets.cpp
index a0f0d4e..32da5a4 100644
--- a/src/ipu/r_codelets.cpp
+++ b/src/ipu/r_codelets.cpp
@@ -24,10 +24,6 @@ struct R_RenderPlayerView_Vertex : public poplar::Vertex {
   void compute() {
     assert(&frame[0] == I_VideoBuffer);
 
-    for (int i = 0; i < 100; ++i){
-      frame[i + 320 * i    ] = 1;
-      frame[i + 320 * i + 1] = 1;
-    }
     IPU_R_RenderPlayerView_UnpackMiscValues(
       (R_RenderPlayerView_MiscValues_t*) &miscValues[0]
     );