//===================================Buffer1========================================
glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _indexBuffer);
glUseProgram(_FaceShader);

// 2
glVertexAttribPointer(_positionSlot, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);
glVertexAttribPointer(_colorSlot, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 3));

glVertexAttribPointer(_texCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 7));

glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _floorTexture);
glUniform1i(_textureUniform, 0);

// 3
glDrawElements(GL_TRIANGLES, sizeof(Indices)/sizeof(Indices[0]), GL_UNSIGNED_BYTE, 0);
//===================================Buffer2========================================
glUseProgram(_FaceShader);

glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer2);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _indexBuffer2);

glActiveTexture(GL_TEXTURE0); // unneccc in practice
glBindTexture(GL_TEXTURE_2D, _fishTexture);
glUniform1i(_textureUniform, 0); // unnecc in practice

glVertexAttribPointer(_positionSlot, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);
glVertexAttribPointer(_colorSlot, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 3));
glVertexAttribPointer(_texCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 7));

glDrawElements(GL_TRIANGLE_STRIP, sizeof(Indices2)/sizeof(Indices2[0]), GL_UNSIGNED_BYTE, 0);

//===================================Buffer3========================================
//[_context presentRenderbuffer:GL_RENDERBUFFER];

// draw a line
glBindBuffer(GL_ARRAY_BUFFER, _lineBuffer);
glUseProgram(_LineShader);
glVertexAttribPointer(_linepositionSlot, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),0);
glVertexAttribPointer(_linecolorSlot, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 3));
//glVertexAttribPointer(_texCoordSlot, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*) (sizeof(float) * 7));
glLineWidth(5.0);
glDrawArrays(GL_LINES, 0, 2);
[_context presentRenderbuffer:GL_ARRAY_BUFFER];