more premake4 fun and tests

Demos/NativeClient/shader_util.h

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+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Some simple helper functions that load shaders and create program objects.
+
+#ifndef EXAMPLES_TUMBLER_SHADER_UTIL_H_
+#define EXAMPLES_TUMBLER_SHADER_UTIL_H_
+
+#include <GLES2/gl2.h>
+
+namespace shader_util {
+
+// Load and compile a shader.  |type| can be one of GL_VERTEX_SHADER or
+// GL_FRAGMENT_SHADER.  Returns a non-0 value representing the compiled
+// shader on success, 0 on failure.  The caller is responsible for deleting
+// the returned shader using glDeleteShader().
+GLuint CreateShaderOfType(GLenum type, const char *shader_src);
+
+// Load and compile the vertex and fragment shaders, then link these together
+// into a complete program.  Returns a non-0 value representing the program on,
+// success or 0 on failure.  The caller is responsible for deleting the
+// returned program using glDeleteProgram().
+GLuint CreateProgramFromVertexAndFragmentShaders(
+    const char *vertex_shader_src, const char *fragment_shader_src);
+
+}  // namespace shader_util
+
+#endif  // EXAMPLES_TUMBLER_SHADER_UTIL_H_