GRAPHICS: Move opengles2 files to the opengl folder

graphics/opengl/control_shaders.cpp

@@ -0,0 +1,65 @@
+/* ResidualVM - A 3D game interpreter
+ *
+ * ResidualVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/scummsys.h"
+
+#if defined(USE_GLES2) || defined(USE_OPENGL_SHADERS)
+
+namespace OpenGL {
+namespace BuiltinShaders {
+
+const char *controlVertex =
+	"#version 100\n"
+	"attribute vec2 position;\n"
+	"attribute vec2 texcoord;\n"
+	"uniform vec2 offsetXY;\n"
+	"uniform vec2 sizeWH;\n"
+	"uniform vec4 clip;\n"
+	"uniform bool flipY;\n"
+	"varying vec2 Texcoord;\n"
+	"void main() {\n"
+		"Texcoord = clip.xy + texcoord * (clip.zw - clip.xy);\n"
+		"vec2 pos = offsetXY + position * sizeWH;\n"
+		"pos.x = pos.x * 2.0 - 1.0;\n"
+		"pos.y = pos.y * 2.0 - 1.0;\n"
+		"if (flipY)\n"
+			"pos.y *= -1.0;\n"
+		"gl_Position = vec4(pos, 0.0, 1.0);\n"
+	"}\n";
+
+const char *controlFragment =
+	"#version 100\n"
+	"#ifdef GL_FRAGMENT_PRECISION_HIGH\n"
+		"precision highp float;\n"
+	"#else\n"
+		"precision mediump float;\n"
+	"#endif\n"
+	"varying vec2 Texcoord;\n"
+	"uniform sampler2D tex;\n"
+	"void main() {\n"
+		"gl_FragColor = texture2D(tex, Texcoord);\n"
+	"}\n";
+
+}
+} // End of namespace OpenGL
+
+#endif