From aa3cab87d2f07979bbe0dad547377335b2930b2e Mon Sep 17 00:00:00 2001
From: veclavtalica <veclavtalica@poto.cafe>
Date: Wed, 16 Oct 2024 22:52:10 +0300
Subject: [PATCH] skip switching texture modes when they're the same as the
 last used

---
 src/rendering/twn_gl_15_rendering.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/rendering/twn_gl_15_rendering.c b/src/rendering/twn_gl_15_rendering.c
index 4a98ac3..c800734 100644
--- a/src/rendering/twn_gl_15_rendering.c
+++ b/src/rendering/twn_gl_15_rendering.c
@@ -147,6 +147,7 @@ typedef struct {
 } DeferredCommand;
 
 
+static TextureMode texture_mode_last_used = -1;
 static Pipeline pipeline_last_used = PIPELINE_NO;
 
 
@@ -401,6 +402,7 @@ static void finally_use_space_pipeline(void) {
     glMatrixMode(GL_MODELVIEW);
     glLoadMatrixf(&camera_look_at_matrix.row[0].x);
 
+    texture_mode_last_used = -1;
     pipeline_last_used = PIPELINE_SPACE;
 }
 
@@ -452,6 +454,7 @@ static void finally_use_2d_pipeline(void) {
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
 
+    texture_mode_last_used = -1;
     pipeline_last_used = PIPELINE_2D;
 }
 
@@ -501,6 +504,9 @@ void use_texture_mode(TextureMode mode) {
 
 
 static void finally_use_texture_mode(TextureMode mode) {
+    if (texture_mode_last_used == mode)
+        return;
+
     static GLuint lists = 0;
     if (!lists) {
         lists = glGenLists(3);
@@ -539,6 +545,8 @@ static void finally_use_texture_mode(TextureMode mode) {
     } else {
         glCallList(lists + 2);
     }
+
+    texture_mode_last_used = mode;
 }