search GLSL extensions

data/layout.xml

@@ -1666,8 +1666,8 @@ Here's a list of what's available in this release.
           <border id="ext-fbf" height="20" width="30" color="0 0 0 1" align="center" justify="center" margin="0 5 0 0">
             <text id="txt-rec" text="FbF" color="0 0 0 1"/>
           </border>
-          <border id="ext-flt" height="20" width="40" color="0 0 0 1" align="center" justify="center" margin="0 5 0 0">
+          <border id="ext-flt" height="20" width="30" color="0 0 0 1" align="center" justify="center" margin="0 5 0 0">
-            <text id="ext-flt-text" text="flt" color="0 0 0 1"/>
+            <text id="ext-flt-text" text="B8" color="0 0 0 1"/>
           </border>
           <border id="ext-dpi" height="20" width="60" color=".2" align="center" justify="center" margin="0 5 0 0">
             <text id="txt-dpi" text="4x-dpi" color="1"/>

src/app_layout.cpp

@@ -1244,7 +1244,7 @@ void App::initLayout()
                 if (auto t = x->find<NodeText>("ext-flt-text"))
                 {
                     int bits = ShaderManager::ext_texture_float ? 32 : 16;
-                    t->set_text_format("flt%d", bits);
+                    t->set_text_format("F%d", bits);
                 }
                 x->m_color = glm::vec4(0, 1, 0, 1);
             }

src/app_shaders.cpp

@@ -15,20 +15,27 @@ void App::initShaders()
         for (int i = 0; i < n_exts; i++)
         {
             std::string ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
-            if (GLAD_GL_EXT_shader_framebuffer_fetch || GLAD_GL_EXT_shader_framebuffer_fetch_non_coherent)
+            if (ext.find("shader_framebuffer_fetch") != std::string::npos)
-            {
                 ShaderManager::ext_framebuffer_fetch = true;
-            }
+#if __GLES__
-            else if (GLAD_GL_ARB_texture_float || GLAD_GL_ATI_texture_float)
+            if (ext.find("texture_float") != std::string::npos)
-            {
                 ShaderManager::ext_texture_float = true;
-            }
+            if (ext.find("color_buffer_float") != std::string::npos)
-            else if (GLAD_GL_NV_half_float || GLAD_GL_ARB_half_float_pixel)
+                ShaderManager::ext_texture_float = true;
-            {
+            if (ext.find("texture__half_float") != std::string::npos)
                 ShaderManager::ext_half_float_pixel = true;
-            }
+            if (ext.find("color_buffer_half_float") != std::string::npos)
+                ShaderManager::ext_half_float_pixel = true;
+#endif
+            LOG("EXT: %s", ext.c_str());
         }
     });
+    
+#if __GL__
+    // In OpenGL 3.3 these should be already available
+    ShaderManager::ext_texture_float = true;
+    ShaderManager::ext_half_float_pixel = true;
+#endif
 
     LOG("Shader Extension shader_framebuffer_fetch: %s", ShaderManager::ext_framebuffer_fetch ? "enabled" : "disabled");
 

src/pch.h

@@ -20,6 +20,7 @@
         #include <OpenGLES/ES3/gl.h>
         #include <OpenGLES/ES3/glext.h>
         #define SHADER_VERSION "#version 300 es\n"
+        #define __GLES__ 1
         #define PP_OS "ios"
     #else
         #define __OSX__ 1
@@ -30,6 +31,7 @@
         #include <OpenGL/gl3.h>
         #include <OpenGL/gl3ext.h>
         #define SHADER_VERSION "#version 150\n"
+        #define __GL__ 1
         #define PP_OS "osx"
     #endif
 
@@ -52,6 +54,7 @@
 
     #define SHADER_VERSION "#version 300 es\n"
     #define PP_OS "android"
+    #define __GLES__ 1
     #define __block
     //#define STBI_NEON
     #define BT_SetTerminate void
@@ -75,6 +78,8 @@
     #include <openvr.h>
     #include <ppl.h>
 
+    #define __WIN__ 1
+    #define __GL__ 1
     #define SHADER_VERSION "#version 150\n"
     #define PP_OS "win"
     #define __block