From 852cc068d3951b61a1bd72967abe2550bb0b4c2f Mon Sep 17 00:00:00 2001
From: Deve <deveee@gmail.com>
Date: Sat, 17 Sep 2016 03:46:35 +0200
Subject: [PATCH] Restore SSAO on linux with GLES renderer.

---
 data/graphical_restrictions.xml  |  1 +
 src/graphics/render.cpp          |  2 --
 src/graphics/render_lighting.cpp |  5 +++++
 src/graphics/rtts.cpp            | 23 +++++++++++++----------
 4 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/data/graphical_restrictions.xml b/data/graphical_restrictions.xml
index 67d0321f8..9d1374e55 100644
--- a/data/graphical_restrictions.xml
+++ b/data/graphical_restrictions.xml
@@ -30,4 +30,5 @@
   <card contains="ATI"            os="windows"  version="<14.300"  disable="DriverRecentEnough"/>
   <card contains="ATI"            os="windows"  version="<=3.1.8787" disable="ForceLegacyDevice"/>
   <card                           os="android"                     disable="TextureFormatBGRA8888"/>
+  <card                           os="android"                     disable="ColorBufferFloat"/>
 </graphical-restrictions>
diff --git a/src/graphics/render.cpp b/src/graphics/render.cpp
index 68e2c8cf2..3ef16eefc 100644
--- a/src/graphics/render.cpp
+++ b/src/graphics/render.cpp
@@ -431,10 +431,8 @@ void IrrDriver::renderScene(scene::ICameraSceneNode * const camnode, unsigned po
     {
         PROFILER_PUSH_CPU_MARKER("- SSAO", 0xFF, 0xFF, 0x00);
         ScopedGPUTimer Timer(getGPUTimer(Q_SSAO));
-        #if !defined(USE_GLES2)
         if (UserConfigParams::m_ssao)
             renderSSAO();
-        #endif
         PROFILER_POP_CPU_MARKER();
     }
 
diff --git a/src/graphics/render_lighting.cpp b/src/graphics/render_lighting.cpp
index b90b9c9a2..cb5787f18 100644
--- a/src/graphics/render_lighting.cpp
+++ b/src/graphics/render_lighting.cpp
@@ -527,6 +527,11 @@ void IrrDriver::renderLights(unsigned pointlightcount, bool hasShadow)
 // ----------------------------------------------------------------------------
 void IrrDriver::renderSSAO()
 {
+#if defined(USE_GLES2)
+    if (!CVS->isEXTColorBufferFloatUsable())
+        return;
+#endif
+
     m_rtts->getFBO(FBO_SSAO).bind();
     glClearColor(1., 1., 1., 1.);
     glClear(GL_COLOR_BUFFER_BIT);
diff --git a/src/graphics/rtts.cpp b/src/graphics/rtts.cpp
index f0c9bbd94..a6040ab20 100644
--- a/src/graphics/rtts.cpp
+++ b/src/graphics/rtts.cpp
@@ -79,7 +79,6 @@ RTT::RTT(size_t width, size_t height)
     // All RTTs are currently RGBA16F mostly with stencil. The four tmp RTTs are the same size
     // as the screen, for use in post-processing.
     
-#if !defined(USE_GLES2)
     GLint rgba_internal_format = GL_RGBA16F;
     GLint rgba_format = GL_BGRA;
     GLint red_internal_format = GL_R16F;
@@ -88,15 +87,19 @@ RTT::RTT(size_t width, size_t height)
     GLint rgb_format = GL_BGR;
     GLint diffuse_specular_internal_format = GL_R11F_G11F_B10F;
     GLint type = GL_FLOAT;
-#else
-    GLint rgba_internal_format = GL_RGBA8;
-    GLint rgba_format = GL_RGBA;
-    GLint red_internal_format = GL_R8;
-    GLint red32_internal_format = GL_R8;
-    GLint red_format = GL_RED;
-    GLint rgb_format = GL_RGB;
-    GLint diffuse_specular_internal_format = GL_RGBA8;
-    GLint type = GL_UNSIGNED_BYTE;
+    
+#if defined(USE_GLES2)
+    if (!CVS->isEXTColorBufferFloatUsable())
+    {
+        rgba_internal_format = GL_RGBA8;
+        rgba_format = GL_RGBA;
+        red_internal_format = GL_R8;
+        red32_internal_format = GL_R8;
+        red_format = GL_RED;
+        rgb_format = GL_RGB;
+        diffuse_specular_internal_format = GL_RGBA8;
+        type = GL_UNSIGNED_BYTE;
+    }
 #endif
 
     RenderTargetTextures[RTT_TMP1] = generateRTT(res, rgba_internal_format, rgba_format, type);