From 840f28ef182b703d08dcb028dd3809b20846ffae Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Wed, 19 Dec 2018 12:43:39 +0100
Subject: [PATCH] glgsg: fix framebuffer_copy_to_ram format for float
 framebuffers

---
 .../src/glstuff/glGraphicsStateGuardian_src.cxx  | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
index 7974a9345c..df2095284c 100644
--- a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
+++ b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
@@ -7049,6 +7049,16 @@ framebuffer_copy_to_ram(Texture *tex, int view, int z,
       } else {
         format = Texture::F_srgb;
       }
+    } else if (_current_properties->get_float_color()) {
+      if (_current_properties->get_alpha_bits()) {
+        format = Texture::F_rgba32;
+      } else if (_current_properties->get_blue_bits()) {
+        format = Texture::F_rgb32;
+      } else if (_current_properties->get_green_bits()) {
+        format = Texture::F_rg32;
+      } else {
+        format = Texture::F_r32;
+      }
     } else {
       if (_current_properties->get_alpha_bits()) {
         format = Texture::F_rgba;
@@ -7058,7 +7068,11 @@ framebuffer_copy_to_ram(Texture *tex, int view, int z,
     }
     if (_current_properties->get_float_color()) {
       component_type = Texture::T_float;
-    } else if (_current_properties->get_color_bits() <= 24) {
+    } else if (_current_properties->get_color_bits() <= 24
+            && _current_properties->get_red_bits() <= 8
+            && _current_properties->get_green_bits() <= 8
+            && _current_properties->get_blue_bits() <= 8
+            && _current_properties->get_alpha_bits() <= 8) {
       component_type = Texture::T_unsigned_byte;
     } else {
       component_type = Texture::T_unsigned_short;