From 9f1a92441a804833a1c7b04c7ae67ad9ca3761a9 Mon Sep 17 00:00:00 2001
From: SuperUserNameMan <9801802+SuperUserNameMan@users.noreply.github.com>
Date: Thu, 27 Jun 2024 12:48:40 +0200
Subject: [PATCH 1/4] rmodels.c, LoadImageFromCgltfImage() : fix base64 padding
 support

This should fix the issue related to `.gltf` embeded image in base64 format, by ignoring `=` padding and calculating the data size in bytes correctly.
---
 src/rmodels.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/rmodels.c b/src/rmodels.c
index a323292ca7d8..4d1dbb9a203e 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -4815,7 +4815,9 @@ static Image LoadImageFromCgltfImage(cgltf_image *cgltfImage, const char *texPat
             else
             {
                 int base64Size = (int)strlen(cgltfImage->uri + i + 1);
-                int outSize = 3*(base64Size/4);         // TODO: Consider padding (-numberOfPaddingCharacters)
+                while( cgltfImage->uri[ i + base64Size ] == '=' ) base64Size--; // remove optional paddings
+                int numberOfEncodedBits = base64Size * 6 - ( base64Size * 6 ) % 8 ; // ignore extra bits
+                int outSize = numberOfEncodedBits / 8 ; // actual encoded bytes
                 void *data = NULL;
 
                 cgltf_options options = { 0 };

From c55e579271e17f6150391ca66fd508e03ac73af0 Mon Sep 17 00:00:00 2001
From: SuperUserNameMan <9801802+SuperUserNameMan@users.noreply.github.com>
Date: Thu, 27 Jun 2024 13:17:48 +0200
Subject: [PATCH 2/4] follow guidelin convention

---
 src/rmodels.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/rmodels.c b/src/rmodels.c
index 4d1dbb9a203e..8f052b098ac2 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -4815,8 +4815,8 @@ static Image LoadImageFromCgltfImage(cgltf_image *cgltfImage, const char *texPat
             else
             {
                 int base64Size = (int)strlen(cgltfImage->uri + i + 1);
-                while( cgltfImage->uri[ i + base64Size ] == '=' ) base64Size--; // remove optional paddings
-                int numberOfEncodedBits = base64Size * 6 - ( base64Size * 6 ) % 8 ; // ignore extra bits
+                while (cgltfImage->uri[i+base64Size] == '=') base64Size--; // remove optional paddings
+                int numberOfEncodedBits = base64Size * 6 - (base64Size * 6) % 8 ; // ignore extra bits
                 int outSize = numberOfEncodedBits / 8 ; // actual encoded bytes
                 void *data = NULL;
 

From 3900e9c7651066b24b11f6743626c6d4af7870eb Mon Sep 17 00:00:00 2001
From: SuperUserNameMan <9801802+SuperUserNameMan@users.noreply.github.com>
Date: Thu, 27 Jun 2024 13:20:45 +0200
Subject: [PATCH 3/4] try to follow guideline convention as much as possible

---
 src/rmodels.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/rmodels.c b/src/rmodels.c
index 8f052b098ac2..ecd2e67d9790 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -4815,9 +4815,9 @@ static Image LoadImageFromCgltfImage(cgltf_image *cgltfImage, const char *texPat
             else
             {
                 int base64Size = (int)strlen(cgltfImage->uri + i + 1);
-                while (cgltfImage->uri[i+base64Size] == '=') base64Size--; // remove optional paddings
-                int numberOfEncodedBits = base64Size * 6 - (base64Size * 6) % 8 ; // ignore extra bits
-                int outSize = numberOfEncodedBits / 8 ; // actual encoded bytes
+                while (cgltfImage->uri[i + base64Size] == '=') base64Size--; // remove optional paddings
+                int numberOfEncodedBits = base64Size*6 - (base64Size*6) % 8 ; // ignore extra bits
+                int outSize = numberOfEncodedBits/8 ; // actual encoded bytes
                 void *data = NULL;
 
                 cgltf_options options = { 0 };

From ec5165f58eaf820b80236dfc8f70295f5402e683 Mon Sep 17 00:00:00 2001
From: SuperUserNameMan <9801802+SuperUserNameMan@users.noreply.github.com>
Date: Thu, 27 Jun 2024 14:24:00 +0200
Subject: [PATCH 4/4] clarify comments

i hope it's clear ennough
---
 src/rmodels.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/rmodels.c b/src/rmodels.c
index ecd2e67d9790..a6209f39f817 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -4815,9 +4815,9 @@ static Image LoadImageFromCgltfImage(cgltf_image *cgltfImage, const char *texPat
             else
             {
                 int base64Size = (int)strlen(cgltfImage->uri + i + 1);
-                while (cgltfImage->uri[i + base64Size] == '=') base64Size--; // remove optional paddings
-                int numberOfEncodedBits = base64Size*6 - (base64Size*6) % 8 ; // ignore extra bits
-                int outSize = numberOfEncodedBits/8 ; // actual encoded bytes
+                while (cgltfImage->uri[i + base64Size] == '=') base64Size--;    // Ignore optional paddings
+                int numberOfEncodedBits = base64Size*6 - (base64Size*6) % 8 ;   // Encoded bits minus extra bits, so it becomes a multiple of 8 bits
+                int outSize = numberOfEncodedBits/8 ;                           // Actual encoded bytes
                 void *data = NULL;
 
                 cgltf_options options = { 0 };