Define GLSL version

// Vertex shaders snippets

///////////////////////////////////////////////////////////////////////////////

const char* gVS_Header_Attributes =

const char* gVS_Header_Start =

        "#version 100\n"

        "attribute vec4 position;\n";

const char* gVS_Header_Attributes_TexCoords =

        "attribute vec2 texCoords;\n";

// Fragment shaders snippets

///////////////////////////////////////////////////////////////////////////////

const char* gFS_Header_Start =

        "#version 100\n";

const char* gFS_Header_Extension_FramebufferFetch =

        "#extension GL_NV_shader_framebuffer_fetch : enable\n\n";

const char* gFS_Header_Extension_ExternalTexture =

String8 ProgramCache::generateVertexShader(const ProgramDescription& description) {

    // Add attributes

    String8 shader(gVS_Header_Attributes);

    String8 shader(gVS_Header_Start);

    if (description.hasTexture || description.hasExternalTexture) {

        shader.append(gVS_Header_Attributes_TexCoords);

    }

}

String8 ProgramCache::generateFragmentShader(const ProgramDescription& description) {

    String8 shader;

    String8 shader(gFS_Header_Start);

    const bool blendFramebuffer = description.framebufferMode >= SkXfermode::kPlus_Mode;

    if (blendFramebuffer) {