1 files changed, 106 insertions, 0 deletions
diff --git a/shiny/driver/gldriver/egl.go b/shiny/driver/gldriver/egl.go
new file mode 100755
index 0000000..6f5d3d7
--- /dev/null
+++ b/shiny/driver/gldriver/egl.go
@@ -0,0 +1,106 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package gldriver
+
+// These constants match the values found in the EGL 1.4 headers,
+// egl.h, eglext.h, and eglplatform.h.
+const (
+	_EGL_DONT_CARE = -1
+
+	_EGL_NO_SURFACE = 0
+	_EGL_NO_CONTEXT = 0
+	_EGL_NO_DISPLAY = 0
+
+	_EGL_OPENGL_ES2_BIT = 0x04 // EGL_RENDERABLE_TYPE mask
+	_EGL_WINDOW_BIT     = 0x04 // EGL_SURFACE_TYPE mask
+
+	_EGL_OPENGL_ES_API   = 0x30A0
+	_EGL_RENDERABLE_TYPE = 0x3040
+	_EGL_SURFACE_TYPE    = 0x3033
+	_EGL_BUFFER_SIZE     = 0x3020
+	_EGL_ALPHA_SIZE      = 0x3021
+	_EGL_BLUE_SIZE       = 0x3022
+	_EGL_GREEN_SIZE      = 0x3023
+	_EGL_RED_SIZE        = 0x3024
+	_EGL_DEPTH_SIZE      = 0x3025
+	_EGL_STENCIL_SIZE    = 0x3026
+	_EGL_SAMPLE_BUFFERS  = 0x3032
+	_EGL_CONFIG_CAVEAT   = 0x3027
+	_EGL_NONE            = 0x3038
+
+	_EGL_CONTEXT_CLIENT_VERSION = 0x3098
+)
+
+// ANGLE specific options found in eglext.h
+const (
+	_EGL_PLATFORM_ANGLE_ANGLE                   = 0x3202
+	_EGL_PLATFORM_ANGLE_TYPE_ANGLE              = 0x3203
+	_EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE = 0x3204
+	_EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE = 0x3205
+	_EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE      = 0x3206
+
+	_EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE            = 0x3207
+	_EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE           = 0x3208
+	_EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE          = 0x3209
+	_EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE = 0x320A
+	_EGL_PLATFORM_ANGLE_DEVICE_TYPE_WARP_ANGLE     = 0x320B
+
+	_EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE   = 0x320D
+	_EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE = 0x320E
+)
+
+const (
+	_EGL_SUCCESS             = 0x3000
+	_EGL_NOT_INITIALIZED     = 0x3001
+	_EGL_BAD_ACCESS          = 0x3002
+	_EGL_BAD_ALLOC           = 0x3003
+	_EGL_BAD_ATTRIBUTE       = 0x3004
+	_EGL_BAD_CONFIG          = 0x3005
+	_EGL_BAD_CONTEXT         = 0x3006
+	_EGL_BAD_CURRENT_SURFACE = 0x3007
+	_EGL_BAD_DISPLAY         = 0x3008
+	_EGL_BAD_MATCH           = 0x3009
+	_EGL_BAD_NATIVE_PIXMAP   = 0x300A
+	_EGL_BAD_NATIVE_WINDOW   = 0x300B
+	_EGL_BAD_PARAMETER       = 0x300C
+	_EGL_BAD_SURFACE         = 0x300D
+	_EGL_CONTEXT_LOST        = 0x300E
+)
+
+func eglErrString(errno uintptr) string {
+	switch errno {
+	case _EGL_SUCCESS:
+		return "EGL_SUCCESS"
+	case _EGL_NOT_INITIALIZED:
+		return "EGL_NOT_INITIALIZED"
+	case _EGL_BAD_ACCESS:
+		return "EGL_BAD_ACCESS"
+	case _EGL_BAD_ALLOC:
+		return "EGL_BAD_ALLOC"
+	case _EGL_BAD_ATTRIBUTE:
+		return "EGL_BAD_ATTRIBUTE"
+	case _EGL_BAD_CONFIG:
+		return "EGL_BAD_CONFIG"
+	case _EGL_BAD_CONTEXT:
+		return "EGL_BAD_CONTEXT"
+	case _EGL_BAD_CURRENT_SURFACE:
+		return "EGL_BAD_CURRENT_SURFACE"
+	case _EGL_BAD_DISPLAY:
+		return "EGL_BAD_DISPLAY"
+	case _EGL_BAD_MATCH:
+		return "EGL_BAD_MATCH"
+	case _EGL_BAD_NATIVE_PIXMAP:
+		return "EGL_BAD_NATIVE_PIXMAP"
+	case _EGL_BAD_NATIVE_WINDOW:
+		return "EGL_BAD_NATIVE_WINDOW"
+	case _EGL_BAD_PARAMETER:
+		return "EGL_BAD_PARAMETER"
+	case _EGL_BAD_SURFACE:
+		return "EGL_BAD_SURFACE"
+	case _EGL_CONTEXT_LOST:
+		return "EGL_CONTEXT_LOST"
+	}
+	return "EGL: unknown error"
+}