external: updated GLES3 headers.

src/MagnumExternal/OpenGL/GLES3/flextGL.h

@@ -578,6 +578,22 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_COLOR_ATTACHMENT13 0x8CED
 #define GL_COLOR_ATTACHMENT14 0x8CEE
 #define GL_COLOR_ATTACHMENT15 0x8CEF
+#define GL_COLOR_ATTACHMENT16 0x8CF0
+#define GL_COLOR_ATTACHMENT17 0x8CF1
+#define GL_COLOR_ATTACHMENT18 0x8CF2
+#define GL_COLOR_ATTACHMENT19 0x8CF3
+#define GL_COLOR_ATTACHMENT20 0x8CF4
+#define GL_COLOR_ATTACHMENT21 0x8CF5
+#define GL_COLOR_ATTACHMENT22 0x8CF6
+#define GL_COLOR_ATTACHMENT23 0x8CF7
+#define GL_COLOR_ATTACHMENT24 0x8CF8
+#define GL_COLOR_ATTACHMENT25 0x8CF9
+#define GL_COLOR_ATTACHMENT26 0x8CFA
+#define GL_COLOR_ATTACHMENT27 0x8CFB
+#define GL_COLOR_ATTACHMENT28 0x8CFC
+#define GL_COLOR_ATTACHMENT29 0x8CFD
+#define GL_COLOR_ATTACHMENT30 0x8CFE
+#define GL_COLOR_ATTACHMENT31 0x8CFF
 #define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56
 #define GL_MAX_SAMPLES 0x8D57
 #define GL_HALF_FLOAT 0x140B
@@ -991,6 +1007,7 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_PROGRAM 0x82E2
 #define GL_VERTEX_ARRAY 0x8074
 #define GL_QUERY 0x82E3
+#define GL_PROGRAM_PIPELINE 0x82E4
 #define GL_SAMPLER 0x82E6
 #define GL_MAX_LABEL_LENGTH 0x82E8
 #define GL_MAX_DEBUG_MESSAGE_LENGTH 0x9143
@@ -1030,6 +1047,7 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_PROGRAM_KHR 0x82E2
 #define GL_VERTEX_ARRAY_KHR 0x8074
 #define GL_QUERY_KHR 0x82E3
+#define GL_PROGRAM_PIPELINE_KHR 0x82E4
 #define GL_SAMPLER_KHR 0x82E6
 #define GL_MAX_LABEL_LENGTH_KHR 0x82E8
 #define GL_MAX_DEBUG_MESSAGE_LENGTH_KHR 0x9143
@@ -1042,7 +1060,6 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_CONTEXT_FLAG_DEBUG_BIT_KHR 0x00000002
 #define GL_STACK_OVERFLOW_KHR 0x0503
 #define GL_STACK_UNDERFLOW_KHR 0x0504
-#define GL_PROGRAM_PIPELINE 0x82E4
 #define GL_DISPLAY_LIST 0x82E7
 
 /* GL_NV_texture_border_clamp */